activity
20182025
most citedOptical Variability of Quasars with 20-Year Photometric Light Curves

75 citations · 294 across the 20 of their papers we have counts for

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Showing 2024 · astro-ph.GAShow all

6 papers · 2 filters

astro-ph.GA2024

Varstrometry for Off-nucleus and Dual sub-Kpc AGN (VODKA): A Mix of Singles, Lenses, and True Duals at Cosmic Noon

Arran C. Gross, Yu-Ching Chen, Masamune Oguri +8

Dual Active Galactic Nuclei (dual AGNs), a phase in some galaxy mergers during which both central supermassive black holes (SMBHs) are active, are expected to be a key observable s…

astro-ph.GA2024

Varstrometry for Off-nucleus and Dual sub-Kpc AGN (VODKA): Long-slit optical spectroscopic follow-up with Gemini/GMOS and HST/STIS

Yu-Ching Chen, Arran C. Gross, Xin Liu +4

High spatial and spectral resolution observations are essential for identifying sub-arcsecond dual and lensed quasars and confirming their redshifts. We present Gemini/GMOS and HST…

astro-ph.GA2024★ 17 cited

JWST ERS Program Q3D: The pitfalls of virial BH mass constraints shown in a z = 3 quasar with an ultramassive host

Caroline Bertemes, Dominika Wylezalek, David S. N. Rupke +12

We present JWST MIRI/NIRSpec observations of the extremely red quasar SDSS J165202.64+172852.3 at z~3, one of the most luminous quasars known to date, driving powerful outflows and…

astro-ph.GA2024

VODKA-JWST: A 3.8 kpc dual quasar at cosmic noon in a powerful starburst galaxy with JWST/MIRI IFU

Yu-Ching Chen, Yuzo Ishikawa, Nadia L. Zakamska +12

Dual quasars, two active supermassive black holes at galactic scales, represent crucial objects for studying the impact of galaxy mergers and quasar activity on the star formation…

astro-ph.GA2024★ 2 cited

VODKA-JWST: Synchronized growth of two SMBHs in a massive gas disk? A 3.8 kpc separation dual quasar at cosmic noon with NIRSpec IFU

Yuzo Ishikawa, Nadia L. Zakamska, Yue Shen +10

The search for dual supermassive black holes (SMBHs) is of immense interest in modern astrophysics. Galaxy mergers may fuel and produce SMBH pairs. Actively accreting SMBH pairs ar…

astro-ph.GA2024★ 1 cited

High-quality Extragalactic Legacy-field Monitoring (HELM) with DECam

Ming-Yang Zhuang, Qian Yang, Yue Shen +45

High-quality Extragalactic Legacy-field Monitoring (HELM) is a long-term observing program that photometrically monitors several well-studied extragalactic legacy fields with the D…