SDSS-WISE coordinate offsets plus red WISE colors pre-select advanced mergers likely to host unresolved dual-AGN candidates, with Keck AO confirming substructure in 20 of 46 targets at 43 percent yield.
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16 Pith papers cite this work. Polarity classification is still indexing.
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LRDs are reinterpreted as intermediate-mass super-Eddington systems with wind-driven pseudo-photospheres that explain their spectra and imply engine masses below 10^5 solar masses rather than overmassive black holes.
A new sample of 157 mid-IR dual AGN candidates in mergers yields 13 confirmed cases and 63 strong candidates at separations 14.5-129 kpc, over half beyond 50 kpc, with diverse BPT classes and 31% in multi-mergers.
In low-extinction galactic open clusters fast and slow rotators populate distinct parts of the extended main-sequence turnoff while differential extinction inflates the turnoff width and biases age estimates in others.
Post-starburst galaxies at cosmic noon show very low radio detection rates and compact weak sources, consistent with short-lived low-luminosity AGN, while older quiescent galaxies exhibit stronger extended radio emission.
New optical polarization data of over 90,000 stars shows H I filaments in the Riegel-Crutcher cloud tightly aligned with a coherent plane-of-sky magnetic field, indicating magnetic fields shape the cold neutral medium.
G352 is an unbound proto-OB association of young stars along a 150-pc filament at 1670 pc whose kinematics and steep pitch angle are inconsistent with galactic spiral structure.
Early LSST data recovers known ultracool dwarfs and yields 89 candidates with 17 unique to this work, forecasting over 17,000 detections in Data Preview 2 using synthetic populations.
Close major galaxy pairs exhibit 8.8% lower HI gas fractions and 15% higher HI star formation efficiency in S+S systems than mass- and redshift-matched isolated controls.
A census of ~3600 variable compact radio sources at 3 GHz from VLASS epochs 1 and 2, with 5-9% showing >30% flux changes above 20-300 mJy and most consistent with blazars or quasars.
Photometric metallicities from DECam identify 213 Jet stream candidates and detect fanning in the stream morphology.
Ring galaxies in voids are predominantly outer, more massive, redder, and lower in star formation than typical void galaxies, pointing to secular internal dynamics as the main driver over large-scale environment.
The FL16Y catalog provides 7220 gamma-ray sources with improved localizations from 16 years of Fermi-LAT data while retaining the prior diffuse emission model.
The 4FGL-DR4 catalog updates the prior release with 14 years of Fermi-LAT observations, adding 546 new point sources and revising parameters, associations, and light curves for a total of 7194 gamma-ray sources.
The paper provides a historical and technical overview of the SAOImageDS9 software, highlighting its features for astronomical data visualization and analysis.
citing papers explorer
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A High Resolution Search for Dual AGN Candidates in Mergers: A Pre-Selection Strategy using Keck AO
SDSS-WISE coordinate offsets plus red WISE colors pre-select advanced mergers likely to host unresolved dual-AGN candidates, with Keck AO confirming substructure in 20 of 46 targets at 43 percent yield.
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Little Red Dots as Intermediate Mass, Super-Eddington Engines: Insights from Type IIn Supernovae and The 1837-1856 Great Eruption of $\eta$ Carinae
LRDs are reinterpreted as intermediate-mass super-Eddington systems with wind-driven pseudo-photospheres that explain their spectra and imply engine masses below 10^5 solar masses rather than overmassive black holes.
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The Hunt for Red Dual AGNs I: Spatially-Resolved Mid-IR Dual AGNs in the DeCam Legacy Survey
A new sample of 157 mid-IR dual AGN candidates in mergers yields 13 confirmed cases and 63 strong candidates at separations 14.5-129 kpc, over half beyond 50 kpc, with diverse BPT classes and 31% in multi-mergers.
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Investigating Extended Main-Sequence Turnoffs in Galactic Open Clusters
In low-extinction galactic open clusters fast and slow rotators populate distinct parts of the extended main-sequence turnoff while differential extinction inflates the turnoff width and biases age estimates in others.
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Tracing Radio AGN-Driven Quenching in Post-Starburst Galaxies at Cosmic Noon
Post-starburst galaxies at cosmic noon show very low radio detection rates and compact weak sources, consistent with short-lived low-luminosity AGN, while older quiescent galaxies exhibit stronger extended radio emission.
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When Magnetic Fields Sculpt the Sky: The Riegel-Crutcher cloud in optical polarization
New optical polarization data of over 90,000 stars shows H I filaments in the Riegel-Crutcher cloud tightly aligned with a coherent plane-of-sky magnetic field, indicating magnetic fields shape the cold neutral medium.
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Structure and Large-Scale Kinematics of Young Stellar Populations in the NGC 6357 and NGC 6334 Giant Molecular Cloud Complex
G352 is an unbound proto-OB association of young stars along a 150-pc filament at 1670 pc whose kinematics and steep pitch angle are inconsistent with galactic spiral structure.
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Searching for Ultracool Dwarfs in Early LSST Data Products
Early LSST data recovers known ultracool dwarfs and yields 89 candidates with 17 unique to this work, forecasting over 17,000 detections in Data Preview 2 using synthetic populations.
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HI Gas and Star Formation in Major Galaxy Pairs from the FAST All-Sky HI Survey (FASHI)
Close major galaxy pairs exhibit 8.8% lower HI gas fractions and 15% higher HI star formation efficiency in S+S systems than mass- and redshift-matched isolated controls.
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A Census of Variable Radio Sources at $3\,$GHz
A census of ~3600 variable compact radio sources at 3 GHz from VLASS epochs 1 and 2, with 5-9% showing >30% flux changes above 20-300 mJy and most consistent with blazars or quasars.
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The DECam MAGIC Survey: Investigating the Jet Stellar Stream with Photometric Metallicities
Photometric metallicities from DECam identify 213 Jet stream candidates and detect fanning in the stream morphology.
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Environmental Dependence of Galaxy properties: A study of 341 Ring Galaxies in Cosmic Voids
Ring galaxies in voids are predominantly outer, more massive, redder, and lower in star formation than typical void galaxies, pointing to secular internal dynamics as the main driver over large-scale environment.
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Fermi-LAT 16-year Source List
The FL16Y catalog provides 7220 gamma-ray sources with improved localizations from 16 years of Fermi-LAT data while retaining the prior diffuse emission model.
-
Fermi Large Area Telescope Fourth Source Catalog Data Release 4 (4FGL-DR4)
The 4FGL-DR4 catalog updates the prior release with 14 years of Fermi-LAT observations, adding 546 new point sources and revising parameters, associations, and light curves for a total of 7194 gamma-ray sources.
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SAOImageDS9: An Essential Tool for Astronomical Exploration
The paper provides a historical and technical overview of the SAOImageDS9 software, highlighting its features for astronomical data visualization and analysis.
- Changing-look Active Galactic Nuclei from SDSS, LAMOST and DESI Surveys