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arxiv: 2607.02354 · v1 · pith:AUCQ57QTnew · submitted 2026-07-02 · 🌌 astro-ph.GA

Assessing Ultra-Cool Dwarf Contamination in Photometrically Selected High-Redshift Galaxy Samples

Pith reviewed 2026-07-03 09:21 UTC · model grok-4.3

classification 🌌 astro-ph.GA
keywords ultra-cool dwarfshigh-redshift galaxiesphotometric contaminationFC-ENZOspectral energy distributionsJWSTHSTRoman Space Telescope
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The pith

FC-ENZO predicts ultra-cool dwarf contamination fractions are similar across deep surveys but concentrated near each survey's limiting magnitude.

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

The paper develops FC-ENZO to forecast how many ultra-cool dwarf stars pass photometric selection and get counted as high-redshift galaxies. It compares two spectral libraries and finds that the one relaxing chemical equilibrium yields higher contamination because of stronger absorption near 1 micron. T to early-Y dwarfs dominate the contaminants near redshift 8. Overall fractions look comparable for HST, Roman, and JWST fields at the same redshift, yet the problem clusters at the faintest detectable magnitudes. The tool is offered for survey planning and for choosing fields that minimize follow-up waste.

Core claim

FC-ENZO models the expected surface density of UCDs, synthesizes their photometry from two libraries, and counts how many pass a user's color or photo-z cuts; the resulting contaminant fractions rise with metallicity, are higher with the ELF OWL library than with BOBCAT, and remain similar across telescope surveys within a given redshift bin while concentrating near the limiting magnitude.

What carries the argument

FC-ENZO, a code that synthesizes dwarf-star photometry from chosen SED libraries and counts the fraction that satisfy user-specified high-redshift selection criteria.

If this is right

  • Contamination rises with metallicity and is highest for T to early-Y dwarfs at z approximately 8.
  • Overall contamination levels are comparable across deep HST, Roman, and JWST surveys in the same redshift range.
  • The bulk of contaminants sit near each survey's limiting magnitude.
  • At brighter magnitudes the relative contamination is largest for HST, then Roman, then JWST.
  • The code supplies a practical way to rank fields for spectroscopic follow-up.

Where Pith is reading between the lines

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

  • Survey teams could run FC-ENZO before finalizing filter sets to shift the contamination peak away from the science sample.
  • Brighter subsets of a catalog are likely to need less aggressive cleaning than the faintest bins.
  • The library-to-library difference points to a need for improved atmospheric models of UCDs before contamination can be treated as a solved systematic.
  • The same machinery could be adapted to test contamination by other foreground populations once their SED libraries exist.

Load-bearing premise

The two synthetic spectral libraries and the chosen stellar density models give an unbiased picture of real ultra-cool dwarf spectra and spatial distribution.

What would settle it

A spectroscopic census of ultra-cool dwarfs in one of the survey fields that yields a number of interlopers differing by more than the model's stated uncertainty from the FC-ENZO prediction for the same magnitude and color cuts.

Figures

Figures reproduced from arXiv: 2607.02354 by Michele Trenti, Nicha Leethochawalit, Onnalin Innala, Takahiro Morishita.

Figure 1
Figure 1. Figure 1: Example output from FC-ENZO using the fiducial model setup for the BORG-0314-6712 field with the z ∼ 8 galaxy selection criteria from G. Roberts-Borsani et al. (2022). The first panel shows the total number density of UCDs of all spectral types as a function of F160W magnitude, which depends on the sky position of the field. The second panel shows the fraction of UCDs for which the galaxy template is prefe… view at source ↗
Figure 2
Figure 2. Figure 2: Total contamination as a function of metallicity. The contamination numbers are summed over the magnitude range 24.0–26.75 (in 0.25 magnitude bins) to represent the total contamination at each metallicity and are calculated for four different BoRG fields for z ∼ 8 galaxies. The blue, orange, and green lines marked with triangle data points are from the BORG-0314-6712, BORG-0955+4528, and BORG-0409-5317 res… view at source ↗
Figure 3
Figure 3. Figure 3: Contamination density maps in galactic coordinate using two different stellar number-density models. The left and middle panel show the predicted UCDs contamination density based on the MW distribution from C. Aganze et al. (2022b), and E. J. Honaker & J. E. Gizis (2025), respectively. The right panel presents the ratio between the two models, highlighting the differences in their predicted contamination p… view at source ↗
Figure 4
Figure 4. Figure 4: Similar to [PITH_FULL_IMAGE:figures/full_fig_p011_4.png] view at source ↗
Figure 5
Figure 5. Figure 5: Left panel: The color-color selection criteria for z ∼ 8 galaxies from G. Roberts-Borsani et al. (2022): F098M dropout (upper) and F105W dropout (lower). All gray data points are the simulated UCDs at mF 160W ≃ 26.5 according to the characteristics of the the BoRG-0409-5317 field. The colored data points are those that pass all selection criteria. F105W dropouts exhibits higher contamination than F098M dro… view at source ↗
Figure 6
Figure 6. Figure 6: Stellar contamination removal using the crite￾ria from M. B. Bagley et al. (2026). All data points are UCDs simulated at F158=27.5 mag. The gray stars repre￾sent sources that fall within the stellar selection region de￾fined by M. B. Bagley et al. (2026). Colored data points are the remaining stellar contaminants in z ∼ 8 F087-dropout galaxy candidates. at F158 = 27.5 mag. The colored data points indi￾cate… view at source ↗
Figure 7
Figure 7. Figure 7: Distribution of sources classified using the CLASS STAR parameter derived from the F444W detection im￾age. Cyan points indicate objects with CLASS STAR > 0.95, which are likely stellar sources. The red point marks a distin￾guishable source for which morphological separation is diffi￾cult. Gray points represent objects with signal-to-noise ra￾tios lower than 4. mag, same as the depth of the J1235 field pres… view at source ↗
Figure 8
Figure 8. Figure 8 [PITH_FULL_IMAGE:figures/full_fig_p015_8.png] view at source ↗
Figure 9
Figure 9. Figure 9: Contamination rates for z ∼ 8 as a function of apparent magnitude. The color scheme and the survey descriptions are the same as in [PITH_FULL_IMAGE:figures/full_fig_p015_9.png] view at source ↗
Figure 10
Figure 10. Figure 10: Predicted contamination map in unit of per 10 arcmin2 for z ∼ 8 galaxies using the characteristics of the surveys and selection criteria presented in [PITH_FULL_IMAGE:figures/full_fig_p016_10.png] view at source ↗
Figure 11
Figure 11. Figure 11: z ∼ 8 UCD contamination counts translated to unit of per mag per Mpc3 , using the surveys explored in this work but excludes results from Roman due to the lack of available completeness estimate. We also compare the con￾tamination with the best-fit z ∼ 8 galaxy luminosity function from N. Leethochawalit et al. (2023), shown as the orange curves. The red star at MUV = −23.10 corresponds to a T2 dwarf ident… view at source ↗
Figure 12
Figure 12. Figure 12: Relation between signal-to-noise ratio (SNR) and flux for the HST F160W band from BORG 0132+3035. The data points represent the observed SNR calculated from total flux, while the orange crosses show the values derived from our noise calculation [PITH_FULL_IMAGE:figures/full_fig_p018_12.png] view at source ↗
Figure 13
Figure 13. Figure 13: Fitting of the PHOTFLAM calibration parameter based on the Pandeia ETC. The data points were obtained from the Pandeia simulations, while the solid line shows the best-fit model. For the ETC, we used the exposure time corresponding to the Roman High-Latitude Wide-Area Survey (HLWAS) deep-tier broadband survey. REFERENCES Aganze, C., Burgasser, A. J., Malkan, M., et al. 2022a, ApJ, 924, 114, doi: 10.3847/1… view at source ↗
read the original abstract

Ultra-cool dwarf stars (UCDs) are a common source of contamination in high-redshift galaxy searches as both sources are red and these early-forming galaxies can have sizes that are difficult to resolve even with space telescopes. Standard selection techniques, including photometric redshift estimation and color-color criteria, cannot fully eliminate this contamination. We develop \textbf{F}oreground \textbf{C}ontamination \textbf{E}valuator of \textbf{N}earby dwarf stars in high-\textbf{Z} photometrically selected \textbf{O}bjects (FC-ENZO), a code that predicts the number of dwarf stars misidentified as high-redshift galaxies for a given survey setup. FC-ENZO models the number of UCDs and evaluates the fraction of synthesized dwarf stars that passes user-specified selection methods. We compare two synthetic spectral energy distribution libraries and find that the ELF OWL library, which relaxes the assumption of chemical equilibrium, predicts larger contaminant fractions than the BOBCAT library, because of stronger absorption features around $ 1 $ \micron. The contamination fraction increases with metallicity and also depends on the adopted stellar number-density model. The dominant contaminants are T to early Y-type UCDs, which are most commonly misclassified as galaxies at $z \sim 8$. Comparing deep surveys from different space telescopes, we find similar overall contamination levels within the same redshift range. However, the contamination is concentrated near the limiting magnitude of each survey. At brighter magnitudes, the relative contamination is highest for HST (COSMOS), followed by Roman deep-tier survey, and JWST. Although the predicted contaminant numbers remain sensitive to model assumptions, FC-ENZO provides a practical tool for survey design and for identifying optimal fields for spectroscopic follow-up.

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 introduces FC-ENZO, a code that uses two synthetic SED libraries (ELF OWL and BOBCAT) together with stellar number-density models to predict the number of ultra-cool dwarf (UCD) stars that pass photometric selection criteria and are therefore misidentified as high-redshift galaxies. It reports that ELF OWL yields higher contamination fractions than BOBCAT owing to stronger ~1 μm absorption, that fractions increase with metallicity, that T-to-early-Y dwarfs dominate at z~8, and that overall contamination levels are similar across deep HST, Roman, and JWST surveys within a given redshift bin although concentrated near each survey’s limiting magnitude.

Significance. If the adopted SED libraries and density models prove representative of real UCD populations, FC-ENZO would supply a practical, survey-specific forecasting tool that could inform both observing strategy and the choice of fields for spectroscopic follow-up. The cross-survey comparison and the identification of the dominant contaminant spectral types are potentially useful for the design of next-generation high-z galaxy programs.

major comments (2)
  1. [Abstract] Abstract and methods: the quantitative contamination fractions rest on the unvalidated premise that the ELF OWL and BOBCAT libraries correctly reproduce the distribution of real UCD absorption features (especially near 1 μm) and that the chosen stellar number-density models give unbiased spatial counts; no comparison to spectroscopically confirmed UCD contaminants or to observed number counts is described, so the absolute fractions and the claim of similar contamination across HST/Roman/JWST cannot be assessed for systematic bias.
  2. [Abstract] Abstract: no description is given of the precise algorithm or selection-function implementation used to compute the fraction of synthesized dwarfs that pass the user-specified photometric criteria, nor are error bars or sensitivity ranges on those fractions reported despite the explicit dependence on metallicity and density-model choice.
minor comments (2)
  1. [Abstract] The abstract states that contamination is “concentrated near the limiting magnitude” but does not define the magnitude binning or the precise metric used to quantify this concentration.
  2. The paper would benefit from a short table or figure that tabulates the adopted free parameters (metallicity grid, density-model variants) and the resulting range in contamination fractions for each survey.

Simulated Author's Rebuttal

2 responses · 1 unresolved

We thank the referee for their careful reading and valuable comments on our manuscript introducing FC-ENZO. We address each of the major comments below. Where appropriate, we have revised the manuscript to improve clarity on methods and limitations.

read point-by-point responses
  1. Referee: [Abstract] Abstract and methods: the quantitative contamination fractions rest on the unvalidated premise that the ELF OWL and BOBCAT libraries correctly reproduce the distribution of real UCD absorption features (especially near 1 μm) and that the chosen stellar number-density models give unbiased spatial counts; no comparison to spectroscopically confirmed UCD contaminants or to observed number counts is described, so the absolute fractions and the claim of similar contamination across HST/Roman/JWST cannot be assessed for systematic bias.

    Authors: We acknowledge that our quantitative predictions depend on the accuracy of the adopted SED libraries and density models, which have not been directly validated against observed UCD contaminants in high-redshift galaxy samples. The manuscript presents FC-ENZO as a modeling tool to explore the impact of different libraries and models rather than providing empirically calibrated fractions. We have revised the discussion to explicitly state the potential for systematic biases in absolute numbers and to clarify that the reported similarity in contamination levels across surveys holds within the framework of the chosen models. We also highlight that the dominant spectral types and trends with metallicity are robust features across the libraries. revision: partial

  2. Referee: [Abstract] Abstract: no description is given of the precise algorithm or selection-function implementation used to compute the fraction of synthesized dwarfs that pass the user-specified photometric criteria, nor are error bars or sensitivity ranges on those fractions reported despite the explicit dependence on metallicity and density-model choice.

    Authors: We agree with this assessment. The original manuscript provided only a high-level overview of the code. In the revised version, we have added a detailed description of the algorithm in the Methods section, including how synthetic photometry is computed from the SEDs, how the selection criteria are applied, and the integration with stellar density models. Additionally, we now present sensitivity ranges in the results by varying metallicity and density models, shown as shaded regions or multiple curves in the figures, to quantify the dependence on these choices. revision: yes

standing simulated objections not resolved
  • Providing direct comparisons to spectroscopically confirmed UCDs or observed number counts, as this would require access to or collection of specific observational datasets not available for this study.

Circularity Check

0 steps flagged

No circularity; FC-ENZO applies external SED libraries and density models without internal fitting or self-referential definitions

full rationale

The paper presents FC-ENZO as a forward-modeling code that ingests two external synthetic SED libraries (ELF OWL, BOBCAT) and adopted stellar number-density models, then computes the fraction of simulated UCDs that pass user-specified photometric selection criteria. No equations, parameters, or outputs are defined in terms of the predicted contamination fractions themselves, and no self-citations supply load-bearing uniqueness theorems or ansatzes. The reported differences between libraries and dependence on metallicity/density models are explicit acknowledgments that results are conditional on the chosen external inputs rather than tautological reductions. The derivation chain is therefore self-contained against external benchmarks.

Axiom & Free-Parameter Ledger

2 free parameters · 1 axioms · 0 invented entities

The central predictions rest on the accuracy of two external SED libraries and an adopted stellar density model; no new entities are postulated.

free parameters (2)
  • stellar number-density model
    Contamination fraction depends on the adopted stellar number-density model, which is varied as an input.
  • metallicity
    Contamination fraction increases with metallicity, treated as a variable input.
axioms (1)
  • domain assumption The ELF OWL and BOBCAT synthetic SED libraries span the relevant range of ultra-cool dwarf spectral properties.
    The comparison of predicted contaminant fractions relies on these libraries being representative.

pith-pipeline@v0.9.1-grok · 5866 in / 1404 out tokens · 30291 ms · 2026-07-03T09:21:37.860273+00:00 · methodology

discussion (0)

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Works this paper leans on

83 extracted references · 83 canonical work pages · 4 internal anchors

  1. [1]

    J., Malkan, M., et al

    Aganze, C., Burgasser, A. J., Malkan, M., et al. 2022a, ApJ, 924, 114, doi: 10.3847/1538-4357/ac35ea

  2. [2]

    J., Malkan, M., et al

    Aganze, C., Burgasser, A. J., Malkan, M., et al. 2022b, ApJ, 934, 73, doi: 10.3847/1538-4357/ac7053

  3. [3]

    B., Finkelstein, S

    Bagley, M. B., Finkelstein, S. L., Rhoads, J., et al. 2026, arXiv e-prints, arXiv:2603.09828, doi: 10.48550/arXiv.2603.09828

  4. [4]

    1996, A&AS, 117, 393, doi: 10.1051/aas:1996164

    Bertin, E., & Arnouts, S. 1996, A&AS, 117, 393, doi: 10.1051/aas:1996164

  5. [5]

    2019, MNRAS, 486, 1167, doi: 10.1093/mnras/stz217

    Bland-Hawthorn, J., Sharma, S., Tepper-Garcia, T., et al. 2019, MNRAS, 486, 1167, doi: 10.1093/mnras/stz217

  6. [6]

    J., Illingworth, G

    Bouwens, R. J., Illingworth, G. D., Oesch, P. A., et al. 2011, ApJ, 737, 90, doi: 10.1088/0004-637X/737/2/90

  7. [7]

    J., Illingworth, G

    Bouwens, R. J., Illingworth, G. D., Oesch, P. A., et al. 2015, ApJ, 803, 34, doi: 10.1088/0004-637X/803/1/34

  8. [8]

    Bowler, R. A. A., Dunlop, J. S., McLure, R. J., et al. 2012, MNRAS, 426, 2772, doi: 10.1111/j.1365-2966.2012.21904.x

  9. [9]

    Bowler, R. A. A., Dunlop, J. S., McLure, R. J., et al. 2015, MNRAS, 452, 1817, doi: 10.1093/mnras/stv1403

  10. [10]

    B., van Dokkum, P

    Brammer, G. B., van Dokkum, P. G., & Coppi, P. 2008, ApJ, 686, 1503, doi: 10.1086/591786 19

  11. [11]

    Burgasser, A. J. 2014, in Astronomical Society of India Conference Series, Vol. 11, Astronomical Society of India Conference Series, 7–16, doi: 10.48550/arXiv.1406.4887

  12. [12]

    A., Burgasser, A

    Caballero, J. A., Burgasser, A. J., & Klement, R. 2008, A&A, 488, 181, doi: 10.1051/0004-6361:200809520 Carnero Rosell, A., Santiago, B., dal Ponte, M., et al. 2019, MNRAS, 489, 5301, doi: 10.1093/mnras/stz2398

  13. [13]

    M., Kartaltepe, J

    Casey, C. M., Kartaltepe, J. S., Drakos, N. E., et al. 2023, ApJ, 954, 31, doi: 10.3847/1538-4357/acc2bc

  14. [14]

    A., et al

    Chen, B., Stoughton, C., Smith, J. A., et al. 2001, ApJ, 553, 184, doi: 10.1086/320647

  15. [15]

    1997, ApJ, 477, 765, doi: 10.1086/303726

    Chiappini, C., Matteucci, F., & Gratton, R. 1997, ApJ, 477, 765, doi: 10.1086/303726

  16. [16]

    P., Zaritsky, D., et al

    Conroy, C., Naidu, R. P., Zaritsky, D., et al. 2019, ApJ, 887, 237, doi: 10.3847/1538-4357/ab5710

  17. [17]

    2024a, MNRAS, 533, 2391, doi: 10.1093/mnras/stae2006

    Dalmasso, N., Leethochawalit, N., Trenti, M., & Boyett, K. 2024a, MNRAS, 533, 2391, doi: 10.1093/mnras/stae2006

  18. [18]

    2024b, MNRAS, 528, 898, doi: 10.1093/mnras/stad3901

    Dalmasso, N., Trenti, M., & Leethochawalit, N. 2024b, MNRAS, 528, 898, doi: 10.1093/mnras/stad3901

  19. [19]

    E., Yoon, J., Beers, T

    Dietz, S. E., Yoon, J., Beers, T. C., & Placco, V. M. 2020, ApJ, 894, 34, doi: 10.3847/1538-4357/ab7fa4

  20. [20]

    2013, NewAR, 57, 80, doi: 10.1016/j.newar.2013.06.001

    Feltzing, S., & Chiba, M. 2013, NewAR, 57, 80, doi: 10.1016/j.newar.2013.06.001

  21. [21]

    L., Ryan, Jr., R

    Finkelstein, S. L., Ryan, Jr., R. E., Papovich, C., et al. 2015, ApJ, 810, 71, doi: 10.1088/0004-637X/810/1/71

  22. [22]

    L., Bagley, M., Song, M., et al

    Finkelstein, S. L., Bagley, M., Song, M., et al. 2022, ApJ, 928, 52, doi: 10.3847/1538-4357/ac3aed

  23. [23]

    L., Bagley, M

    Finkelstein, S. L., Bagley, M. B., Ferguson, H. C., et al. 2023, ApJL, 946, L13, doi: 10.3847/2041-8213/acade4

  24. [24]

    L., Leung, G

    Finkelstein, S. L., Leung, G. C. K., Bagley, M. B., et al. 2024, ApJL, 969, L2, doi: 10.3847/2041-8213/ad4495

  25. [25]

    M., Akins, H

    Franco, M., Casey, C. M., Akins, H. B., et al. 2025, arXiv e-prints, arXiv:2508.04791, doi: 10.48550/arXiv.2508.04791

  26. [26]

    R., Knapp, G

    Geballe, T. R., Knapp, G. R., Leggett, S. K., et al. 2002, ApJ, 564, 466, doi: 10.1086/324078

  27. [27]

    2009, ApJ, 692, 1075, doi: 10.1088/0004-637X/692/2/1075

    Gillessen, S., Eisenhauer, F., Trippe, S., et al. 2009, ApJ, 692, 1075, doi: 10.1088/0004-637X/692/2/1075

  28. [28]

    A., Kocevski, D

    Grogin, N. A., Kocevski, D. D., Faber, S. M., et al. 2011, ApJS, 197, 35, doi: 10.1088/0067-0049/197/2/35

  29. [30]

    N., Johnson, B

    Hainline, K. N., Johnson, B. D., Robertson, B., et al. 2024b, ApJ, 964, 71, doi: 10.3847/1538-4357/ad1ee4

  30. [31]

    N., Helton, J

    Hainline, K. N., Helton, J. M., Johnson, B. D., et al. 2024c, ApJ, 964, 66, doi: 10.3847/1538-4357/ad20d1

  31. [32]

    2024, ApJ, 960, 56, doi: 10.3847/1538-4357/ad0b7e

    Harikane, Y., Nakajima, K., Ouchi, M., et al. 2024, ApJ, 960, 56, doi: 10.3847/1538-4357/ad0b7e

  32. [33]

    2016, ApJ, 821, 123, doi: 10.3847/0004-637X/821/2/123

    Harikane, Y., Ouchi, M., Ono, Y., et al. 2016, ApJ, 821, 123, doi: 10.3847/0004-637X/821/2/123

  33. [34]

    2001, MNRAS, 325, 1365, doi: 10.1046/j.1365-8711.2001.04510.x

    Haywood, M. 2001, MNRAS, 325, 1365, doi: 10.1046/j.1365-8711.2001.04510.x

  34. [35]

    E., Brammer, G

    Heintz, K. E., Brammer, G. B., Watson, D., et al. 2025, A&A, 693, A60, doi: 10.1051/0004-6361/202450243

  35. [36]

    J., & Gizis, J

    Honaker, E. J., & Gizis, J. E. 2025, ApJ, 985, 48, doi: 10.3847/1538-4357/adc689 Juri´ c, M., Ivezi´ c,ˇZ., Brooks, A., et al. 2008, ApJ, 673, 864, doi: 10.1086/523619

  36. [37]

    M., Liu, M

    Kakazu, Y., Hu, E. M., Liu, M. C., et al. 2010, ApJ, 723, 184, doi: 10.1088/0004-637X/723/1/184

  37. [38]

    Kirkpatrick, J. D. 2005, ARA&A, 43, 195, doi: 10.1146/annurev.astro.42.053102.134017

  38. [39]

    D., Gelino, C

    Kirkpatrick, J. D., Gelino, C. R., Faherty, J. K., et al. 2021, ApJS, 253, 7, doi: 10.3847/1538-4365/abd107

  39. [40]

    M., Faber, S

    Koekemoer, A. M., Faber, S. M., Ferguson, H. C., et al. 2011, ApJS, 197, 36, doi: 10.1088/0067-0049/197/2/36

  40. [41]

    Kordopatis, G., Gilmore, G., Wyse, R. F. G., et al. 2013, MNRAS, 436, 3231, doi: 10.1093/mnras/stt1804

  41. [42]

    BEACON: JWST NIRCam Pure-parallel Imaging Survey. III. Constraints on the UV LF and the Clustering of z~7-14 Galaxies

    Kreilgaard, K. C., Mason, C. A., Morishita, T., et al. 2026, arXiv e-prints, arXiv:2604.17963, doi: 10.48550/arXiv.2604.17963

  42. [43]

    2023, ApJ, 950, 8, doi: 10.3847/1538-4357/acc8cb

    Lacy, B., & Burrows, A. 2023, ApJ, 950, 8, doi: 10.3847/1538-4357/acc8cb

  43. [44]

    S., Beers, T

    Lee, Y. S., Beers, T. C., Kim, Y. K., et al. 2017, ApJ, 836, 91, doi: 10.3847/1538-4357/836/1/91

  44. [45]

    2026, ApJ, 998, 217, doi: 10.3847/1538-4357/ae374b

    Trenti, M. 2026, ApJ, 998, 217, doi: 10.3847/1538-4357/ae374b

  45. [46]

    2023, MNRAS, 524, 5454, doi: 10.1093/mnras/stad2202

    Trenti, M., & Treu, T. 2023, MNRAS, 524, 5454, doi: 10.1093/mnras/stad2202

  46. [47]

    2022, MNRAS, 509, 5836, doi: 10.1093/mnras/stab3265

    Roberts-Borsani, G., & Treu, T. 2022, MNRAS, 509, 5836, doi: 10.1093/mnras/stab3265

  47. [48]

    2021, Sonora Bobcat: cloud-free, substellar atmosphere models, spectra, photometry, evolution, and chemistry, Sonora Bobcat Zenodo, doi: 10.5281/zenodo.5063476

    Marley, M., Saumon, D., Morley, C., et al. 2021, Sonora Bobcat: cloud-free, substellar atmosphere models, spectra, photometry, evolution, and chemistry, Sonora Bobcat Zenodo, doi: 10.5281/zenodo.5063476

  48. [49]

    S., Saumon, D., Visscher, C., et al

    Marley, M. S., Saumon, D., Visscher, C., et al. 2021, ApJ, 920, 85, doi: 10.3847/1538-4357/ac141d

  49. [50]

    J., et al

    Masters, D., McCarthy, P., Burgasser, A. J., et al. 2012, ApJL, 752, L14, doi: 10.1088/2041-8205/752/1/L14

  50. [51]

    2024, MNRAS, 527, 583, doi: 10.1093/mnras/stad2952

    Mazzi, A., Girardi, L., Trabucchi, M., et al. 2024, MNRAS, 527, 583, doi: 10.1093/mnras/stad2952

  51. [52]

    J., Dunlop, J

    McLure, R. J., Dunlop, J. S., Bowler, R. A. A., et al. 2013, MNRAS, 432, 2696, doi: 10.1093/mnras/stt627

  52. [53]

    2021, ApJS, 253, 4, doi: 10.3847/1538-4365/abce67

    Morishita, T. 2021, ApJS, 253, 4, doi: 10.3847/1538-4365/abce67

  53. [54]

    2018, ApJ, 867, 150, doi: 10.3847/1538-4357/aae68c 20

    Morishita, T., Trenti, M., Stiavelli, M., et al. 2018, ApJ, 867, 150, doi: 10.3847/1538-4357/aae68c 20

  54. [55]

    2020, ApJ, 904, 50, doi: 10.3847/1538-4357/abba83

    Morishita, T., Stiavelli, M., Trenti, M., et al. 2020, ApJ, 904, 50, doi: 10.3847/1538-4357/abba83

  55. [56]

    2024, ApJ, 963, 9, doi: 10.3847/1538-4357/ad1404

    Morishita, T., Stiavelli, M., Chary, R.-R., et al. 2024, ApJ, 963, 9, doi: 10.3847/1538-4357/ad1404

  56. [57]

    A., Kreilgaard, K

    Morishita, T., Mason, C. A., Kreilgaard, K. C., et al. 2025, ApJ, 983, 152, doi: 10.3847/1538-4357/adbbdc

  57. [58]

    2026, AJ, 171, 191, doi: 10.3847/1538-3881/ae40f1

    McConachie, I., & Brammer, G. 2026, AJ, 171, 191, doi: 10.3847/1538-3881/ae40f1

  58. [59]

    E., Fortney, J

    Mukherjee, S., Batalha, N. E., Fortney, J. J., & Marley, M. S. 2023, ApJ, 942, 71, doi: 10.3847/1538-4357/ac9f48

  59. [60]

    2016, ApJ, 830, 159, doi: 10.3847/0004-637X/830/2/159

    Nakajima, T., & Sorahana, S. 2016, ApJ, 830, 159, doi: 10.3847/0004-637X/830/2/159

  60. [61]

    A., Bouwens, R

    Oesch, P. A., Bouwens, R. J., Illingworth, G. D., Labb´ e, I., & Stefanon, M. 2018, ApJ, 855, 105, doi: 10.3847/1538-4357/aab03f

  61. [62]

    A., Bouwens, R

    Oesch, P. A., Bouwens, R. J., Illingworth, G. D., et al. 2013, ApJ, 773, 75, doi: 10.1088/0004-637X/773/1/75

  62. [63]

    2009, ApJ, 706, 1136, doi: 10.1088/0004-637X/706/2/1136

    Ouchi, M., Mobasher, B., Shimasaku, K., et al. 2009, ApJ, 706, 1136, doi: 10.1088/0004-637X/706/2/1136

  63. [64]

    C., Burgasser, A., et al

    Pirzkal, N., Sahu, K. C., Burgasser, A., et al. 2005, ApJ, 622, 319, doi: 10.1086/427896

  64. [65]

    J., Malhotra, S., et al

    Pirzkal, N., Burgasser, A. J., Malhotra, S., et al. 2009, ApJ, 695, 1591, doi: 10.1088/0004-637X/695/2/1591

  65. [66]

    M., Pickering, T

    Pontoppidan, K. M., Pickering, T. E., Laidler, V. G., et al. 2016, in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, Vol. 9910, Observatory Operations: Strategies, Processes, and Systems VI, ed. A. B. Peck, R. L. Seaman, & C. R. Benn, 991016, doi: 10.1117/12.2231768

  66. [67]

    2022, ApJ, 927, 236, doi: 10.3847/1538-4357/ac4803

    Leethochawalit, N., & Trenti, M. 2022, ApJ, 927, 236, doi: 10.3847/1538-4357/ac4803

  67. [68]

    2025, ApJ, 983, 18, doi: 10.3847/1538-4357/adba60

    Roberts-Borsani, G., Bagley, M., Rojas-Ruiz, S., et al. 2025, ApJ, 983, 18, doi: 10.3847/1538-4357/adba60

  68. [69]

    D., Tacchella, S., et al

    Robertson, B., Johnson, B. D., Tacchella, S., et al. 2024, ApJ, 970, 31, doi: 10.3847/1538-4357/ad463d

  69. [70]

    E., Ellis, R

    Robertson, B. E., Ellis, R. S., Furlanetto, S. R., & Dunlop, J. S. 2015, ApJ, 802, L19, doi: 10.1088/2041-8205/802/2/l19

  70. [71]

    E., Hathi, N

    Ryan, Jr., R. E., Hathi, N. P., Cohen, S. H., & Windhorst, R. A. 2005, ApJL, 631, L159, doi: 10.1086/497368

  71. [72]

    E., & Reid, I

    Ryan, Jr., R. E., & Reid, I. N. 2016, AJ, 151, 92, doi: 10.3847/0004-6256/151/4/92

  72. [73]

    E., Whitaker, K

    Skelton, R. E., Whitaker, K. E., Momcheva, I. G., et al. 2014, The Astrophysical Journal Supplement Series, 214, 24, doi: 10.1088/0067-0049/214/2/24

  73. [74]

    2019, ApJ, 870, 118, doi: 10.3847/1538-4357/aaf1a7

    Sorahana, S., Nakajima, T., & Matsuoka, Y. 2019, ApJ, 870, 118, doi: 10.3847/1538-4357/aaf1a7

  74. [75]

    , archivePrefix = "arXiv", eprint =

    Stanway, E. R., Bremer, M. N., & Lehnert, M. D. 2008, MNRAS, 385, 493–510, doi: 10.1111/j.1365-2966.2008.12853.x

  75. [76]

    R., Bunker, A

    Stanway, E. R., Bunker, A. J., McMahon, R. G., et al. 2004, ApJ, 607, 704, doi: 10.1086/383531

  76. [77]

    C., Adelberger, K

    Steidel, C. C., Adelberger, K. L., Giavalisco, M., Dickinson, M., & Pettini, M. 1999, The Astrophysical Journal, 519, 1, doi: 10.1086/307363

  77. [78]

    Adelberger, K. L. 1996, ApJL, 462, L17, doi: 10.1086/310029

  78. [79]

    BEACON: JWST NIRCam Pure-parallel Imaging Survey. IV. A Systematic Search for Galaxy Overdensities and Evidence for Gas Accretion Mode Transition

    Sutanto, R. A., Morishita, T., Kodama, T., et al. 2026, arXiv e-prints, arXiv:2602.04333, doi: 10.48550/arXiv.2602.04333

  79. [80]

    J., Ahmed, S., & Laithwaite, R

    Warren, S. J., Ahmed, S., & Laithwaite, R. C. 2021, The Open Journal of Astrophysics, 4, 4, doi: 10.21105/astro.2010.11093

  80. [81]

    A., Williams, C

    Weibel, A., Oesch, P. A., Williams, C. C., et al. 2026, ApJ, 1002, 136, doi: 10.3847/1538-4357/ae5a9c

Showing first 80 references.