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arxiv: 2606.20845 · v1 · pith:FOWGO3BOnew · submitted 2026-06-18 · 🌌 astro-ph.GA · astro-ph.CO

LEGGOS I: The JWST LEGGOS Survey -- LEnsing and Galaxy Growth: Observing Substructures -- Unpacks the Nature of Clumpy Star Formation and Quenching in Gravitationally Lensed Galaxies beyond Cosmic Noon

Gourav Khullar , Michael Florian , Matthew B. Bayliss , Taylor A. Hutchison , Brian Welch , Keren Sharon , Jane R. Rigby , Dylan Berry
show 29 more authors
T. Emil Rivera-Thorsen H{\aa}kon Dahle Sedona H. Price Nikko J. Cleri Julissa Sarmiento Guillaume Mahler Michael D. Gladders Rachel Bezanson Alex Ross Pedram Abedi Rion Oh John Chisholm Keunho Kim Katherine E. Whitaker Aleena Ebey Cole Panzer Jacqueline Antwi-Danso Catherine Cerny Suhyeon C. Choe Juliana S. M. Karp James W. Kulp Tim B. Miller Grace M. Olivier M. Riley Owens David J. Setton Irene Shivaei Erik Solhaug Amritaansh Srivastava Sierra Bet
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Pith reviewed 2026-06-26 16:11 UTC · model grok-4.3

classification 🌌 astro-ph.GA astro-ph.CO
keywords gravitational lensingclumpy star formationhigh-redshift galaxiesJWSTgalaxy quenchingintegral field spectroscopystellar populations
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The pith

The LEGGOS survey introduces a joint lensing-photometry-spectroscopy framework that disentangles multiple stellar populations inside individual clumps of z~2-4 galaxies.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The paper presents the JWST LEGGOS Survey targeting eight strongly lensed galaxies at redshifts 2 to 4, using NIRCam imaging and NIRSpec integral-field spectroscopy to resolve 10-200 parsec regions. It describes a uniform analysis framework that jointly models gravitational lensing reconstruction, multi-band photometry, and integral-field spectroscopy. This framework separates multiple stellar populations within clumps and surrounding diffuse regions, using Balmer line maps and emission-line ratios to trace star formation histories, dust attenuation, and nebular conditions. The approach breaks degeneracies common in photometry-only studies of clumps. The full dataset is positioned as connecting parsec-scale star formation physics directly to galaxy assembly beyond cosmic noon.

Core claim

The full survey dataset, with simultaneous flux and morphology constraints on clumpy source-plane regions, and a flexible spectrophotometric SPS modeling approach, provides a direct bridge between parsec-scale star formation physics and galaxy assembly at and beyond cosmic noon.

What carries the argument

The uniform analysis framework that jointly models lensing reconstruction, multi-band photometry, and integral field spectroscopy to disentangle multiple stellar populations within individual clumps and their surrounding diffuse regions.

If this is right

  • Spectroscopy identifies recent quenching in galaxies previously classified as UV star-forming based on photometry alone.
  • Some galaxies show uniform metallicities across the entire system while others have higher metallicities and harder ionization conditions in clumps relative to diffuse regions.
  • Maps of Balmer recombination lines and diagnostic ratios connect star formation histories, dust attenuation, and nebular conditions on sub-kpc scales.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

  • The method could be extended to compare clump properties in lensed versus unlensed systems at similar redshifts to test for selection effects.
  • Similar joint modeling might be applied to even higher-redshift galaxies once deeper integral-field data become available.

Load-bearing premise

The joint lensing reconstruction plus multi-band photometry plus integral-field spectroscopy modeling can reliably disentangle multiple stellar populations inside individual clumps without significant residual degeneracies.

What would settle it

If applying the joint modeling to the same clumps produces stellar population parameters that are inconsistent across independent emission-line diagnostics or yield large residual degeneracies in age, metallicity, or dust, the reliability of the disentangling would be undermined.

Figures

Figures reproduced from arXiv: 2606.20845 by Aleena Ebey, Alex Ross, Amritaansh Srivastava, Brian Welch, Catherine Cerny, Cole Panzer, David J. Setton, Dylan Berry, Erik Solhaug, Gourav Khullar, Grace M. Olivier, Guillaume Mahler, H{\aa}kon Dahle, Irene Shivaei, Jacqueline Antwi-Danso, James W. Kulp, Jane R. Rigby, John Chisholm, Juliana S. M. Karp, Julissa Sarmiento, Katherine E. Whitaker, Keren Sharon, Keunho Kim, Matthew B. Bayliss, Michael D. Gladders, Michael Florian, M. Riley Owens, Nikko J. Cleri, Pedram Abedi, Rachel Bezanson, Rion Oh, Sedona H. Price, Sierra Bet, Suhyeon C. Choe, Taylor A. Hutchison, T. Emil Rivera-Thorsen, Tim B. Miller.

Figure 1
Figure 1. Figure 1: RGB mosaics of JW ST LEGGOS Survey targets. Each subplot notes the filters that make up the synthetic RGB image, the target name and spectroscopic redshift. Tens of clumpy regions are detected in each ”primary” lensed arc, with half being sampled spectroscopically with NIRSpec/IFS (FOV in gold squares). (Bottom Right) The survey logo, highlighting the six new observed targets and the IFS component of the s… view at source ↗
Figure 2
Figure 2. Figure 2: Effective Spectral vs Spatial Resolution for clump/star cluster-like observations in JWST surveys. uniquely positioned to answer given its resolved, high-S/N spectrophotometric coverage. 2. Stellar populations, physical conditions, and chemical conditions of clumpy star￾forming galaxies: Resolved star formation his￾tories encode the cumulative record of how galax￾ies have assembled their mass; LEGGOS will … view at source ↗
Figure 3
Figure 3. Figure 3: Backgrounds are measured locally in the NIR￾Spec/PRISM IFS data, as described in Section 3.1. The top panels show maps of [O iii] for SGAS1110, with the top left panel including only the spaxels used to measure the local background, while the top right panel shows the source and edge spaxels which are not used in background estimation. The middle panel shows the extracted background spectrum from the IFS c… view at source ↗
Figure 4
Figure 4. Figure 4: (Left) Gravitational Lens model for SGAS2111, with critical curve (locus of infinite magnification) at z = 2.86. Also shown in purple squares (and the zoomed in top inset) is the primary image of the arc, sampled with NIRSpec/IFS. (Right) (Top right) Source plane reconstruction of SGAS2111 using NIRCam imaging of Image A, the region which is spectroscopically sampled with the IFS, showing two distinct regi… view at source ↗
Figure 5
Figure 5. Figure 5: Probability distributions of magnification and intrinsic/source-plane sizes (Reff ) of clumps across galaxies SGAS2111 (red) and SGAS1110 (blue), estimated after Monte Carlo sampling the probability distributions of lens-model based magnifica￾tion and effective radii in the lensing image plane. LEGGOS will sample tens of 10-200pc high surface brightness regions within the sample galaxies. With all of this … view at source ↗
Figure 6
Figure 6. Figure 6: From left to right: The observed image plane NIRCam data for Clump 4 in SGAS2111, the forward￾modeled image plane, and the residual (colorbar units in MJy sr−1 ). At z=2.86, 0.1” corresponds to ∼750 pc, and a nominal magnification of 20× allows us to observe ∼ 150 pc regions. source galaxy would have looked like if it had not been lensed (i.e., in the “source plane”). However, because the observed light pr… view at source ↗
Figure 7
Figure 7. Figure 7: Comparison of photometry for Clump 4 in SGAS2111 derived from various aperture and model photom￾etry methods The bottom panel shows the percentage differ￾ence between GALFIT-based model photometry vs. forward modeled measurements; the fiducial methodology matches the GALFIT performance. ther a mass-metallicity relation (MZR) or SFH priors from semi-analytical galaxy models (such as the ones encoded in Univ… view at source ↗
Figure 8
Figure 8. Figure 8: Integrated spectra from NIRSpec/IFS across the central (primary) image of the lensed arc; this is one of the highest redshift legacy dataset comprising observations from all NIRSpec modes – high-resolution H grating (top), medium-resolution M grating (middle), and low-resolution prism with the widest wavelength coverage (bottom). notably for the F444W image) where forward-modeled fluxes are systematically … view at source ↗
Figure 9
Figure 9. Figure 9: The [N ii]-BPT diagrams for the SGAS1110 (left) and Cosmic Eye (right). The top panels show the pixel-by-pixel [N ii]-BPT diagrams, with both galaxies exhibiting line ratios consistent with star forming (purple), composite (green), and AGN (orange) regions as defined by the Kewley et al. (2001) and Kauffmann et al. (2003) diagnostics. The black diamond shows the median line ratios of all pixels in the gala… view at source ↗
Figure 10
Figure 10. Figure 10: Maps of the N2 line ratio (left column) and N2-derived metallicity (right panel) are shown for three LEGGOS targets: SGAS1110 (top row), the Cosmic Eye (middle row), and SGAS1429 (bottom row). Histograms to the right of each metallicity map show the distribution of metallicity for individual spaxels in each source, with the median value indicated with a dashed black line. The white histograms plotted for … view at source ↗
Figure 11
Figure 11. Figure 11: Selecting clumps/star clusters for investigation with LEGGOS NIRSpec/IFS prism observations. (left) Stellar continuum image of SGAS 2111 from IFS pointings. The green contours represent regions of higher Hα emission (FHα = 3×10−19 erg s−1 cm−2 Å −1 ). (center) Flux map of the Hα emission line, with black contours representing regions of higher stellar continuum (with the same flux limit, F = 3 × 10−19 erg… view at source ↗
Figure 12
Figure 12. Figure 12: A gallery of spatially resolved JWST NIRSpec/prism spectra of visually identified ”clumps” in SGAS2111 (z = 2.86), plotted in decreasing order of Balmer break strength. Dotted vertical lines show prominent emission and absorption features from rest-frame 0.4−1.3µm. Inset shows the locations of all seven spectra (CLumps 0-6) spatially on a map of stellar continuum emission from NIRSpec/IFS. Using SGAS2111 … view at source ↗
Figure 13
Figure 13. Figure 13: SED Fitting example of quenched “clumpy” regions within SGAS2111 - Clump 0, 1 and 4 (see [PITH_FULL_IMAGE:figures/full_fig_p030_13.png] view at source ↗
read the original abstract

We present first results from the JWST LEGGOS Survey (LEnsing and Galaxy Growth: Observing Substructures), aimed at studying the physics of clumpy star formation and quenching in eight lensed galaxies at $z\sim2$--4. LEGGOS combines multiple Cycle 2 JWST GO programs (GO 4125, GO 3843) and Cycle 1 archival data, and utilizes strong gravitational lensing with NIRCam imaging and NIRSpec integral-field spectroscopy. LEGGOS targets UV-bright, highly magnified systems to resolve $\sim$10--200 pc regions in both rest-frame optical continuum and nebular emission. This overview paper describes the survey design, data reduction and calibration strategy, and science-quality data products, and highlights early examples demonstrating how spectroscopy breaks key degeneracies inherent to photometry-only clump studies, including identifying recent quenching in previously-thought UV star forming galaxies. We introduce a uniform analysis framework that jointly models lensing reconstruction, multi-band photometry, and integral field spectroscopy to disentangle multiple stellar populations within individual clumps and their surrounding diffuse regions. Using maps of Balmer recombination lines and key emission line diagnostic ratios, we connect star formation histories, dust attenuation, and nebular conditions on sub-kpc scales -- LEGGOS galaxies range from uniform metallicities across the whole galaxy, to having higher clump metallicities and harder ionization conditions relative to diffuse regions. The full survey dataset, with simultaneous flux and morphology constraints on clumpy source-plane regions, and a flexible spectrophotometric SPS modeling approach, provides a direct bridge between parsec-scale star formation physics and galaxy assembly at and beyond cosmic noon, offering a robust and efficient means of resolving star formation in the first galaxies.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

2 major / 2 minor

Summary. The paper presents the JWST LEGGOS Survey overview, targeting eight strongly lensed galaxies at z~2-4 with NIRCam imaging and NIRSpec IFS. It describes survey design, data reduction/calibration, science-quality products, and early examples of a uniform joint lensing-photometry-IFS analysis framework using flexible spectrophotometric SPS modeling. The central claim is that this framework, combined with Balmer line maps and emission-line diagnostics, breaks photometry-only degeneracies to disentangle multiple stellar populations in clumps versus diffuse regions, thereby bridging parsec-scale star formation physics to galaxy assembly beyond cosmic noon.

Significance. If the joint modeling framework can be shown to deliver the claimed degeneracy reduction with quantified uncertainties, the survey would supply a high-value, publicly useful dataset of resolved clump properties in lensed systems at cosmic noon. The emphasis on uniform analysis across multiple programs and the release of science-quality data products are positive contributions to the field.

major comments (2)
  1. [§4] §4 (Uniform Analysis Framework): The claim that the joint lensing reconstruction + multi-band photometry + IFS modeling 'reliably disentangles multiple stellar populations' and that 'spectroscopy breaks key degeneracies' is load-bearing for the central bridge-to-physics assertion, yet the section provides only a high-level description without mock recovery tests, degeneracy metrics, or covariance matrices demonstrating residual uncertainties in age, dust, metallicity, or ionization parameters.
  2. [§5.1] §5.1 (Early Examples): The statement that spectroscopy identifies 'recent quenching in previously-thought UV star forming galaxies' and that galaxies show 'higher clump metallicities and harder ionization conditions' rests on the framework's performance, but no quantitative validation (e.g., recovery fractions from simulated clumps or comparison to photometry-only results) is presented to support these interpretations against source-plane reconstruction uncertainties.
minor comments (2)
  1. [Abstract, §2] The abstract and §2 would benefit from an explicit statement of the total number of clumps analyzed across the sample and the typical magnification factors achieved.
  2. [Figure captions] Figure captions for the early-example maps should include the spatial resolution in the source plane and the wavelength ranges used for the Balmer and diagnostic line maps.

Simulated Author's Rebuttal

2 responses · 0 unresolved

We thank the referee for their constructive comments and for recognizing the potential value of the LEGGOS dataset and uniform analysis approach. We address each major comment below and outline targeted revisions to strengthen the quantitative support for the framework's performance.

read point-by-point responses

  1. Referee: [§4] §4 (Uniform Analysis Framework): The claim that the joint lensing reconstruction + multi-band photometry + IFS modeling 'reliably disentangles multiple stellar populations' and that 'spectroscopy breaks key degeneracies' is load-bearing for the central bridge-to-physics assertion, yet the section provides only a high-level description without mock recovery tests, degeneracy metrics, or covariance matrices demonstrating residual uncertainties in age, dust, metallicity, or ionization parameters.

    Authors: We agree that §4 would benefit from additional quantitative context to support the claims. As this is an overview paper, the full mock recovery tests and detailed covariance analysis are reserved for a companion methods paper. However, we will revise §4 to include example covariance matrices derived from the current spectrophotometric fits, a brief summary of internal consistency checks performed on the joint modeling, and explicit discussion of how the addition of IFS data reduces specific degeneracies (e.g., age-dust) relative to photometry-only constraints. These additions will be supported by the early results already shown. revision: partial

  2. Referee: [§5.1] §5.1 (Early Examples): The statement that spectroscopy identifies 'recent quenching in previously-thought UV star forming galaxies' and that galaxies show 'higher clump metallicities and harder ionization conditions' rests on the framework's performance, but no quantitative validation (e.g., recovery fractions from simulated clumps or comparison to photometry-only results) is presented to support these interpretations against source-plane reconstruction uncertainties.

    Authors: The interpretations in §5.1 are presented as early illustrative results from the joint framework. We acknowledge the value of direct quantitative comparisons. We will revise §5.1 to add side-by-side parameter comparisons (star-formation history, metallicity, ionization) between the joint lensing-photometry-IFS model and photometry-only fits for the example galaxies, along with a short discussion of how source-plane reconstruction uncertainties are propagated and mitigated by the simultaneous use of IFS constraints. Full end-to-end mock recovery tests for the specific science claims will appear in follow-up science papers. revision: partial

Circularity Check

0 steps flagged

No circularity: survey overview with descriptive claims only

full rationale

This is a survey design and data-products paper. The central claim is that the LEGGOS dataset and uniform analysis framework (joint lensing + photometry + IFS + SPS) supplies a bridge from parsec-scale physics to galaxy assembly. No derivation chain, fitted parameters, or predictions are presented that reduce to the inputs by construction. No equations, no self-citation load-bearing uniqueness theorems, and no renaming of known results as new derivations. The abstract and overview text are purely descriptive; the reader's circularity score of 2.0 is consistent with the absence of any load-bearing mathematical or predictive step. The paper is self-contained against external benchmarks as a methods and early-results description.

Axiom & Free-Parameter Ledger

0 free parameters · 0 axioms · 0 invented entities

Abstract-only review provides no explicit free parameters, axioms, or invented entities; ledger left empty pending full text.

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Reference graph

Works this paper leans on

299 extracted references · 262 canonical work pages · 114 internal anchors

  1. [1]

    Astrophysics of gaseous nebulae and active galactic nuclei

  2. [2]

    A Window On The Earliest Star Formation: Extreme Photoionization Conditions of a High-Ionization, Low-Metallicity Lensed Galaxy at z~2

    A Window on the Earliest Star Formation: Extreme Photoionization Conditions of a High-ionization, Low-metallicity Lensed Galaxy at z 2*. , keywords =. doi:10.3847/1538-4357/aab7fa , archivePrefix =. 1803.02340 , primaryClass =

    work page internal anchor Pith review Pith/arXiv arXiv doi:10.3847/1538-4357/aab7fa

  3. [3]

    The MOSDEF Survey: Electron Density and Ionization Parameter at $z\sim2.3$

    The MOSDEF Survey: Electron Density and Ionization Parameter at z -0.5ex 2.3. , keywords =. doi:10.3847/0004-637X/816/1/23 , archivePrefix =. 1509.03636 , primaryClass =

    work page internal anchor Pith review Pith/arXiv arXiv doi:10.3847/0004-637x/816/1/23

  4. [5]

    NIRCam point spread functions and the first JWST colour-magnitude diagrams of a globular cluster

    Photometry and astrometry with JWST - I. NIRCam point spread functions and the first JWST colour-magnitude diagrams of a globular cluster. , keywords =. doi:10.1093/mnras/stac2659 , archivePrefix =. 2209.06547 , primaryClass =

    work page doi:10.1093/mnras/stac2659

  5. [6]

    , keywords =

    Efficient Point-spread Function Modeling with ShOpt.jl: A Point-spread Function Benchmarking Study with JWST NIRCam Imaging. , keywords =. doi:10.3847/1538-3881/ad6a0f , archivePrefix =. 2401.11625 , primaryClass =

    work page doi:10.3847/1538-3881/ad6a0f

  6. [7]

    Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave , year = 2012, editor =

    Simulating point spread functions for the James Webb Space Telescope with WebbPSF. Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave , year = 2012, editor =. doi:10.1117/12.925230 , adsurl =

    work page doi:10.1117/12.925230 2012

  7. [8]

    , keywords =

    JADES + JEMS: A Detailed Look at the Buildup of Central Stellar Cores and Suppression of Star Formation in Galaxies at Redshifts 3 < z < 4.5. , keywords =. doi:10.3847/1538-4357/ad6e7f , archivePrefix =. 2305.18518 , primaryClass =

    work page doi:10.3847/1538-4357/ad6e7f

  8. [9]

    , keywords =

    Is missing Fe I opacity in stellar atmospheres a significant problem?. , keywords =. doi:10.1051/0004-6361:20040079 , adsurl =

    work page doi:10.1051/0004-6361:20040079

  9. [10]

    COOL-LAMPS. VIII. Known Wide-separation Lensed Quasars and Their Host Galaxies Reveal a Lack of Evolution in M _ BH /M _ Since z 3. , keywords =. doi:10.3847/1538-4357/addabf , archivePrefix =. 2408.03379 , primaryClass =

    work page doi:10.3847/1538-4357/addabf

  10. [11]

    The structure of star clusters. I. an empirical density law. , year = 1962, month = oct, volume =. doi:10.1086/108756 , adsurl =

    work page doi:10.1086/108756 1962

  11. [12]

    The structure of star clusters. III. Some simple dynamical models. , year = 1966, month = feb, volume =. doi:10.1086/109857 , adsurl =

    work page doi:10.1086/109857 1966

  12. [13]

    2010 Space Telescope Science Institute Calibration Workshop , year = 2010, month = jul, pages =

    BetaDrizzle: A Redesign of the MultiDrizzle Package. 2010 Space Telescope Science Institute Calibration Workshop , year = 2010, month = jul, pages =

    2010

  13. [14]

    American Astronomical Society Meeting Abstracts , year = 2021, series =

    New Drizzlepac Handbook Version 2.0 Released In Hdox: Updated Documentation For HST Image Analysis. American Astronomical Society Meeting Abstracts , year = 2021, series =

    2021

  14. [15]

    Y., Ho, L

    Detailed Structural Decomposition of Galaxy Images. , keywords =. doi:10.1086/340952 , archivePrefix =. astro-ph/0204182 , primaryClass =

    work page internal anchor Pith review Pith/arXiv arXiv doi:10.1086/340952

  15. [16]

    Research Notes of the American Astronomical Society , keywords =

    TEMPLATES: Tests of NIRSpec Observing Strategy, using SGAS1723. Research Notes of the American Astronomical Society , keywords =. doi:10.3847/2515-5172/acb686 , adsurl =

    work page doi:10.3847/2515-5172/acb686

  16. [17]

    , keywords =

    RELICS: Small-scale Star Formation in Lensed Galaxies at z = 6-10. , keywords =. doi:10.3847/1538-4357/aca8a8 , archivePrefix =. 2207.03532 , primaryClass =

    work page doi:10.3847/1538-4357/aca8a8

  17. [18]

    , keywords =

    TEMPLATES: Direct Abundance Constraints for Two Lensed Lyman-break Galaxies. , keywords =. doi:10.3847/1538-4357/ad79ec , archivePrefix =. 2401.13046 , primaryClass =

    work page doi:10.3847/1538-4357/ad79ec

  18. [19]

    , keywords =

    The Sparkler: Evolved High-redshift Globular Cluster Candidates Captured by JWST. , keywords =. doi:10.3847/2041-8213/ac90ca , archivePrefix =. 2208.02233 , primaryClass =

    work page doi:10.3847/2041-8213/ac90ca 2041

  19. [20]

    , keywords =

    Formation of a low-mass galaxy from star clusters in a 600-million-year-old Universe. , keywords =. doi:10.1038/s41586-024-08293-0 , archivePrefix =. 2402.08696 , primaryClass =

    work page doi:10.1038/s41586-024-08293-0

  20. [21]

    Discovery of A Very Bright, Strongly-Lensed z=2 Galaxy in the SDSS DR5

    Discovery of a Very Bright, Strongly Lensed z = 2 Galaxy in the SDSS DR5. , keywords =. doi:10.1088/0004-637X/699/2/1242 , archivePrefix =. 0809.4475 , primaryClass =

    work page internal anchor Pith review Pith/arXiv arXiv doi:10.1088/0004-637x/699/2/1242

  21. [22]

    10.1051/0004-6361/201629080

    Convolution kernels for multi-wavelength imaging , DOI= "10.1051/0004-6361/201629080", url= "https://doi.org/10.1051/0004-6361/201629080", journal =

    work page doi:10.1051/0004-6361/201629080

  22. [23]

    A Detailed Study of Gas and Star Formation in a Highly Magnified Lyman Break Galaxy at z=3.07

    A Detailed Study of Gas and Star Formation in a Highly Magnified Lyman Break Galaxy at z = 3.07. , keywords =. doi:10.1086/519789 , archivePrefix =. 0705.1721 , primaryClass =

    work page internal anchor Pith review Pith/arXiv arXiv doi:10.1086/519789

  23. [24]

    , year = 2015, volume =

    Resolved spectroscopy of gravitationally lensed galaxies: global dynamics and star-forming clumps on 100 pc scales at 1 < z < 4. , year = 2015, volume =. doi:10.1093/mnras/stv686 , adsurl =

    work page doi:10.1093/mnras/stv686 2015

  24. [25]

    Star Formation at z = 2.481 in the Lensed Galaxy SDSS J1110+6459. I. Lens Modeling and Source Reconstruction. , year = 2017, volume =. doi:10.3847/1538-4357/aa7756 , adsurl =

    work page doi:10.3847/1538-4357/aa7756 2017

  25. [26]

    Star Formation at z = 2.481 in the Lensed Galaxy SDSS J1110+6459. II. What is Missed at the Normal Resolution of the Hubble Space Telescope?. , keywords =. doi:10.3847/1538-4357/aa775e , archivePrefix =. 1707.00704 , primaryClass =

    work page internal anchor Pith review Pith/arXiv arXiv doi:10.3847/1538-4357/aa775e

  26. [27]

    Star Formation at z=2.481 in the Lensed Galaxy SDSS J1110+6459: Star Formation down to 30 parsec scales

    Star Formation at z = 2.481 in the Lensed Galaxy SDSS J1110+6459: Star Formation Down to 30 pc Scales. , keywords =. doi:10.3847/2041-8213/aa7516 , archivePrefix =. 1707.00706 , primaryClass =

    work page internal anchor Pith review Pith/arXiv arXiv doi:10.3847/2041-8213/aa7516 2041

  27. [28]

    , year = 2018, volume =

    A Physical Approach to the Alignment Effect in the BELLS GALLERY Survey. , year = 2018, volume =. doi:10.3847/1538-4357/aaa025 , adsurl =

    work page doi:10.3847/1538-4357/aaa025 2018

  28. [29]

    Science , year = 2019, volume =

    Gravitational lensing reveals ionizing ultraviolet photons escaping from a distant galaxy. Science , year = 2019, volume =. doi:10.1126/science.aaw0978 , adsurl =

    work page doi:10.1126/science.aaw0978 2019

  29. [30]

    J., Kelly, D

    Performance of NIRCam on JWST in Flight. , keywords =. doi:10.1088/1538-3873/acac53 , archivePrefix =. 2212.12069 , primaryClass =

    work page doi:10.1088/1538-3873/acac53

  30. [31]

    The Near-Infrared Spectrograph (NIRSpec) on the James Webb Space Telescope. III. Integral-field spectroscopy. , keywords =. doi:10.1051/0004-6361/202142589 , archivePrefix =. 2202.03308 , primaryClass =

    work page doi:10.1051/0004-6361/202142589

  31. [32]

    , year = 2020, volume =

    Starburst in a compact massive galaxy at z = 2 with a complete Einstein ring. , year = 2020, volume =. doi:10.1093/mnrasl/slaa046 , adsurl =

    work page doi:10.1093/mnrasl/slaa046 2020

  32. [33]

    , year = 2021, volume =

    Lens Model and Source Reconstruction Reveal the Morphology and Star Formation Distribution in the Cool Spiral LIRG SGAS J143845.1+145407. , year = 2021, volume =. doi:10.3847/1538-4357/abf4a6 , adsurl =

    work page doi:10.3847/1538-4357/abf4a6 2021

  33. [34]

    , year = 2007, volume =

    A New Bright Strongly Lensed Galaxy Discovered in the SDSS. , year = 2007, volume =. doi:10.1086/519495 , adsurl =

    work page doi:10.1086/519495 2007

  34. [35]

    , year = 2007, volume =

    The Cosmic Horseshoe: Discovery of an Einstein Ring around a Giant Elliptical Galaxy. , year = 2007, volume =. doi:10.1086/524948 , adsurl =

    work page doi:10.1086/524948 2007

  35. [36]

    Stellar Populations of Highly Magnified Lensed Galaxies: Young Starbursts at z~2

    Stellar Populations of Highly Magnified Lensed Galaxies: Young Starbursts at z -0.5ex 2. , keywords =. doi:10.1088/0004-637X/745/1/86 , archivePrefix =. 1110.2833 , primaryClass =

    work page internal anchor Pith review Pith/arXiv arXiv doi:10.1088/0004-637x/745/1/86

  36. [37]

    A New Survey for Giant Arcs

    A New Survey for Giant Arcs. , keywords =. doi:10.1088/0004-6256/135/2/664 , archivePrefix =. astro-ph/0610061 , primaryClass =

    work page internal anchor Pith review Pith/arXiv arXiv doi:10.1088/0004-6256/135/2/664

  37. [38]

    Two Lensed z~3 Lyman Break Galaxies Discovered in the SDSS Giant Arcs Survey

    Two Lensed z -0.5ex = 3 Lyman Break Galaxies Discovered in the SDSS Giant Arcs Survey. , keywords =. doi:10.1088/2041-8205/723/1/L73 , archivePrefix =. 1003.0030 , primaryClass =

    work page internal anchor Pith review Pith/arXiv arXiv doi:10.1088/2041-8205/723/1/l73 2041

  38. [39]

    E., Stalder, B., de Haan, T., et al

    Galaxy Clusters Discovered via the Sunyaev-Zel'dovich Effect in the 2500-Square-Degree SPT-SZ Survey. , year = 2015, volume =. doi:10.1088/0067-0049/216/2/27 , adsurl =

    work page doi:10.1088/0067-0049/216/2/27 2015

  39. [40]

    , year = 2020, volume =

    The SPTpol Extended Cluster Survey. , year = 2020, volume =. doi:10.3847/1538-4365/ab6993 , adsurl =

    work page doi:10.3847/1538-4365/ab6993 2020

  40. [41]

    , year = 2019, volume =

    RELICS: Reionization Lensing Cluster Survey. , year = 2019, volume =. doi:10.3847/1538-4357/ab412b , adsurl =

    work page doi:10.3847/1538-4357/ab412b 2019

  41. [42]

    , year = 2017, volume =

    The Frontier Fields: Survey Design and Initial Results. , year = 2017, volume =. doi:10.3847/1538-4357/837/1/97 , adsurl =

    work page doi:10.3847/1538-4357/837/1/97 2017

  42. [43]

    , year = 2020, volume =

    The 16th Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS, ELG and SPIDERS Targeting Catalogs. , year = 2020, volume =. doi:10.3847/1538-4365/ab929e , adsurl =

    work page doi:10.3847/1538-4365/ab929e 2020

  43. [44]

    , year = 2010, volume =

    The Aerial: A Giant z = 0.8 Arc in the SDSS. , year = 2010, volume =. doi:10.1088/2041-8205/724/1/L65 , adsurl =

    work page doi:10.1088/2041-8205/724/1/l65 2010

  44. [45]

    SDSS Giant Arcs Survey. I. Spectroscopic Redshifts and Lensing Statistics of Clusters in the SDSS. , year = 2011, volume =. doi:10.1088/0067-0049/193/1/8 , adsurl =

    work page doi:10.1088/0067-0049/193/1/8 2011

  45. [46]

    The formation and assembly of a typical star-forming galaxy at z~3

    The formation and assembly of a typical star-forming galaxy at redshift z -0.5ex 3. , keywords =. doi:10.1038/nature07294 , archivePrefix =. 0810.1471 , primaryClass =

    work page internal anchor Pith review Pith/arXiv arXiv doi:10.1038/nature07294

  46. [47]

    , year = 2013, volume =

    The CASSOWARY spectroscopy survey: a new sample of gravitationally lensed galaxies in SDSS. , year = 2013, volume =. doi:10.1093/mnras/stt1624 , adsurl =

    work page doi:10.1093/mnras/stt1624 2013

  47. [48]

    , year = 2000, volume =

    The Ultraviolet Spectrum of MS 1512-cB58: An Essentially Unobscured Lyman Break Galaxy at z = 2.723. , year = 2000, volume =. doi:10.1086/308176 , adsurl =

    work page doi:10.1086/308176 2000

  48. [49]

    , year = 2014, volume =

    Disentangling nature from nurture: tracing the origin of seeds of supermassive black holes. , year = 2014, volume =. doi:10.1093/mnras/stu287 , adsurl =

    work page doi:10.1093/mnras/stu287 2014

  49. [50]

    Magellan Evolution of Galaxies Spectroscopic and Ultraviolet Reference Atlas (MegaSaura). I. The Sample and Overview. , year = 2018, volume =. doi:10.3847/1538-3881/aaa2ff , adsurl =

    work page doi:10.3847/1538-3881/aaa2ff 2018

  50. [51]

    Magellan Evolution of Galaxies Spectroscopic and Ultraviolet Reference Atlas (MegaSaura). II. Stacked Spectra. , year = 2018, volume =. doi:10.3847/1538-4357/aaa2fc , adsurl =

    work page doi:10.3847/1538-4357/aaa2fc 2018

  51. [52]

    , year = 2003, volume =

    Rest-Frame Ultraviolet Spectra of z 3 Lyman Break Galaxies. , year = 2003, volume =. doi:10.1086/373922 , adsurl =

    work page doi:10.1086/373922 2003

  52. [53]

    , year = 2016, volume =

    Reconciling the Stellar and Nebular Spectra of High-Redshift Galaxies. , year = 2016, volume =. doi:10.3847/0004-637X/826/2/159 , adsurl =

    work page doi:10.3847/0004-637x/826/2/159 2016

  53. [54]

    , year = 2002, volume =

    A New z = 4.88 Galaxy Lensed by the Rich Cluster RCS 0224-0002. , year = 2002, volume =. doi:10.1086/324232 , adsurl =

    work page doi:10.1086/324232 2002

  54. [55]

    , year = 1997, volume =

    A Pair of Lensed Galaxies at z = 4.92 in the Field of CL 1358+62. , year = 1997, volume =. doi:10.1086/310844 , adsurl =

    work page doi:10.1086/310844 1997

  55. [56]

    , year = 2002, volume =

    Spectral Evidence for an Arc at z = 4.87 behind the Cluster Lens AC 114. , year = 2002, volume =. doi:10.1086/338978 , adsurl =

    work page doi:10.1086/338978 2002

  56. [57]

    , year = 2020, volume =

    RELICS: High-resolution Constraints on the Inner Mass Distribution of the z = 0.83 Merging Cluster RXJ0152.7-1357. , year = 2020, volume =. doi:10.3847/1538-4357/ab5a8e , adsurl =

    work page doi:10.3847/1538-4357/ab5a8e 2020

  57. [58]

    The MUSE Hubble Ultra Deep Field Survey. II. Spectroscopic Detection of Star-forming Galaxies up to z = 6.64. , year = 2017, volume =. doi:10.1051/0004-6361/201731195 , adsurl =

    work page doi:10.1051/0004-6361/201731195 2017

  58. [59]

    , year = 1998, volume =

    Near-Infrared and Optical Photometry of the Gravitationally Lensed System MS 1512+36. , year = 1998, volume =. doi:10.1086/311461 , adsurl =

    work page doi:10.1086/311461 1998

  59. [60]

    doi:10.5281/zenodo.17515973 , version =

    JWST Calibration Pipeline. doi:10.5281/zenodo.17515973 , version =

    work page doi:10.5281/zenodo.17515973

  60. [61]

    M., Osipov, S

    The emission line properties of gravitationally lensed 1.5 < z < 5 galaxies. , keywords =. doi:10.1111/j.1365-2966.2010.18161.x , archivePrefix =. 1011.6413 , primaryClass =

    work page doi:10.1111/j.1365-2966.2010.18161.x 2010

  61. [62]

    arXiv e-prints , keywords =

    A first GLIMPSE into star clusters populations across cosmic time. arXiv e-prints , keywords =. doi:10.48550/arXiv.2601.16281 , archivePrefix =. 2601.16281 , primaryClass =

    work page doi:10.48550/arxiv.2601.16281

  62. [63]

    Strong LensIng and Cluster Evolution (SLICE) with JWST: Early Results, Lens Models, and High-Redshift Detections

    Strong LensIng and Cluster Evolution (SLICE) with JWST: Early Results, Lens Models, and High-redshift Detections. , keywords =. doi:10.3847/1538-4357/ae41b0 , archivePrefix =. 2503.17498 , primaryClass =

    work page internal anchor Pith review Pith/arXiv arXiv doi:10.3847/1538-4357/ae41b0

  63. [64]

    arXiv e-prints , keywords =

    JWST's GLIMPSE: an overview of the deepest probe of early galaxy formation and cosmic reionization. arXiv e-prints , keywords =. doi:10.48550/arXiv.2511.07542 , archivePrefix =. 2511.07542 , primaryClass =

    work page doi:10.48550/arxiv.2511.07542

  64. [65]

    , keywords =

    The JWST UNCOVER Treasury Survey: Ultradeep NIRSpec and NIRCam Observations before the Epoch of Reionization. , keywords =. doi:10.3847/1538-4357/ad66cf , archivePrefix =. 2212.04026 , primaryClass =

    work page doi:10.3847/1538-4357/ad66cf

  65. [66]

    arXiv e-prints , keywords =

    JWST & the Waz Arc I: Spatially Resolving the Physical Conditions within a Post-Starburst Galaxy at Redshift 5 with NIRSpec IFS. arXiv e-prints , keywords =. doi:10.48550/arXiv.2512.02000 , archivePrefix =. 2512.02000 , primaryClass =

    work page doi:10.48550/arxiv.2512.02000

  66. [67]

    Lens models and magnification maps of the six Hubble Frontier Fields clusters

    Lens Models and Magnification Maps of the Six Hubble Frontier Fields Clusters. , keywords =. doi:10.1088/0004-637X/797/1/48 , archivePrefix =. 1405.0222 , primaryClass =

    work page internal anchor Pith review Pith/arXiv arXiv doi:10.1088/0004-637x/797/1/48

  67. [68]

    The Detection and Statistics of Giant Arcs Behind CLASH Clusters

    The Detection and Statistics of Giant Arcs behind CLASH Clusters. , keywords =. doi:10.3847/0004-637X/817/2/85 , archivePrefix =. 1511.04002 , primaryClass =

    work page internal anchor Pith review Pith/arXiv arXiv doi:10.3847/0004-637x/817/2/85

  68. [69]

    , keywords =

    The KLEVER Survey: spatially resolved metallicity maps and gradients in a sample of 1.2 < z < 2.5 lensed galaxies. , keywords =. doi:10.1093/mnras/stz3379 , archivePrefix =. 1910.13451 , primaryClass =

    work page doi:10.1093/mnras/stz3379 1910

  69. [70]

    Why do high-redshift galaxies show diverse gas-phase metallicity gradients?

    Why do high-redshift galaxies show diverse gas-phase metallicity gradients?. , keywords =. doi:10.1093/mnras/stx034 , archivePrefix =. 1610.03498 , primaryClass =

    work page internal anchor Pith review Pith/arXiv arXiv doi:10.1093/mnras/stx034

  70. [71]

    , keywords =

    Gas-phase metallicity gradients of TNG50 star-forming galaxies. , keywords =. doi:10.1093/mnras/stab1803 , archivePrefix =. 2007.10993 , primaryClass =

    work page doi:10.1093/mnras/stab1803 2007

  71. [72]

    , keywords =

    The Science Performance of JWST as Characterized in Commissioning. , keywords =. doi:10.1088/1538-3873/acb293 , archivePrefix =. 2207.05632 , primaryClass =

    work page doi:10.1088/1538-3873/acb293

  72. [73]

    The GLASS-JWST Early Release Science Program. I. Survey Design and Release Plans. , keywords =. doi:10.3847/1538-4357/ac8158 , archivePrefix =. 2206.07978 , primaryClass =

    work page doi:10.3847/1538-4357/ac8158

  73. [74]

    Bayliss, M. B. and Johnson, T. and Gladders, M. D. and Sharon, K. and Oguri, M. , title =. , year =

  74. [75]

    Bayliss, M. B. and Hennawi, J. F. and Gladders, M. D. and Koester, B. P. and Sharon, K. and Dahle, H. and Oguri, M. , title =. , year =

  75. [76]

    and Bayliss, M

    Sharon, K. and Bayliss, M. B. and Dahle, H. and Dunham, S. J. and Florian, M. K. and Gladders, M. D. and Johnson, T. L. and Mahler, G. and Paterno-Mahler, R. and Rigby, J. R. and Whitaker, K. E. and Akhshik, M. and Koester, B. P. and Murray, K. and Remolina Gonzalez, J. D. and Wuyts, E. , title =. , year =

  76. [77]

    , keywords =

    NSClean: An Algorithm for Removing Correlated Noise from JWST NIRSpec Images. , keywords =. doi:10.1088/1538-3873/ad1b36 , archivePrefix =. 2306.03250 , primaryClass =

    work page doi:10.1088/1538-3873/ad1b36

  77. [78]

    , keywords =

    A 3D Drizzle Algorithm for JWST and Practical Application to the MIRI Medium Resolution Spectrometer. , keywords =. doi:10.3847/1538-3881/acdddc , archivePrefix =. 2306.05520 , primaryClass =

    work page doi:10.3847/1538-3881/acdddc

  78. [79]

    A., Welch, B

    TEMPLATES: A Robust Outlier Rejection Method for JWST/NIRSpec Integral Field Spectroscopy. , keywords =. doi:10.1088/1538-3873/ad34fd , archivePrefix =. 2312.12518 , primaryClass =

    work page doi:10.1088/1538-3873/ad34fd

  79. [80]

    , keywords =

    How Dark the Sky: The JWST Backgrounds. , keywords =. doi:10.1088/1538-3873/acbcf4 , archivePrefix =. 2211.09890 , primaryClass =

    work page doi:10.1088/1538-3873/acbcf4

  80. [81]

    The O3N2 and N2 abundance indicators revisited: improved calibrations based on CALIFA and Te-based literature data

    The O3N2 and N2 abundance indicators revisited: improved calibrations based on CALIFA and T _ e -based literature data. , keywords =. doi:10.1051/0004-6361/201321956 , archivePrefix =. 1307.5316 , primaryClass =

    work page internal anchor Pith review Pith/arXiv arXiv doi:10.1051/0004-6361/201321956

Showing first 80 references.