activity
20132026
most citedDiscovery of an Enormous Ly nebula in a massive galaxy overdensity at

144 citations · 338 across the 11 of their papers we have counts for

collaborators

11 papers

astro-ph.GA2026

Near-Infrared Spectroscopy of Low-Redshift Palomar-Green Quasars and Composite Spectra

Amy Cavanaugh, Michael Brotherton, Jacob McLane +1

The Palomar-Green (PG) Quasars have been used extensively to establish the spectral properties of luminous active galactic nuclei (AGNs) at low redshifts in many wavebands, but not…

astro-ph.GA2025★ 4 cited

The Discovery of Little Red Dots in the Local Universe: Signatures of Cool Gas Envelopes

Xiaojing Lin, Xiaohui Fan, Zheng Cai +25

JWST observations have revealed a population of high-redshift "little red dots" (LRDs) that challenge conventional AGN models. We report the discovery of three local LRDs at $z = 0…

astro-ph.GA2024

Gemini Near Infrared Spectrograph -- Distant Quasar Survey: Rest-Frame Ultraviolet-Optical Spectral Properties of Broad Absorption Line Quasars

Harum Ahmed, Ohad Shemmer, Brandon Matthews +12

We present the rest-frame ultraviolet-optical spectral properties of 65 broad absorption line (BAL) quasars from the Gemini Near Infrared Spectrograph-Distant Quasar Survey (GNIRS-…

astro-ph.GA2023★ 13 cited

Gemini Near Infrared Spectrograph -- Distant Quasar Survey: Augmented Spectroscopic Catalog and a Prescription for Correcting UV-Based Quasar Redshifts

Brandon M. Matthews, Cooper Dix, Ohad Shemmer +13

Quasars at most often have redshifts measured from rest-frame ultraviolet emission lines. One of the most common such lines, C IV , shows blueshifts up to ${…

astro-ph.GA2023★ 8 cited

Gemini Near Infrared Spectrograph - Distant Quasar Survey: Prescriptions for Calibrating UV-Based Estimates of Supermassive Black Hole Masses in High-Redshift Quasars

Cooper Dix, Brandon Matthews, Ohad Shemmer +10

The most reliable single-epoch supermassive black hole mass () estimates in quasars are obtained by using the velocity widths of low-ionization emission lines, typicall…

astro-ph.GA2021★ 1 cited

Probing Early Super-massive Black Hole Growth and Quasar Evolution with Near-infrared Spectroscopy of 37 Reionization-era Quasars at 6.3 < z <= 7.64

Jinyi Yang, Feige Wang, Xiaohui Fan +18

We report the results of near-infrared spectroscopic observations of 37 quasars in the redshift range , including 32 quasars at , forming the largest quasar n…

astro-ph.GA2017★ 46 cited

Discovery of 16 New z ~ 5.5 Quasars : Filling in the Redshift Gap of Quasar Color Selection

Jinyi Yang, Xiaohui Fan, Xue-Bing Wu +13

We present initial results from the first systematic survey of luminous quasars. Quasars at 5.5, the post-reionization epoch, are crucial tools to explore the…

astro-ph.GA2017★ 6 cited

The physical constraints on a new LoBAL QSO at z=4.82

Weimin Yi, Richard Green, Jin-Ming Bai +26

Very few low-ionization broad absorption line (LoBAL) QSOs have been found at high redshifts to date. One high-redshift LoBAL QSO, J0122+1216, was recently discovered at the Lijian…

astro-ph.GA2016★ 114 cited

MApping the Most Massive Overdensities (MAMMOTH) II -- Discovery of an Extremely Massive Overdensity BOSS1441 at

Zheng Cai, Xiaohui Fan, Fuyan Bian +10

Cosmological simulations suggest a strong correlation between high optical-depth Ly absorbers, which arise from the intergalactic medium (IGM), and 3-D mass overdensities on sca…

astro-ph.GA2016★ 144 cited

Discovery of an Enormous Ly nebula in a massive galaxy overdensity at

Zheng Cai, Xiaohui Fan, Yujin Yang +12

Enormous Ly Nebulae (ELANe), unique tracers of galaxy density peaks, are predicted to lie at the nodes and intersections of cosmic filamentary structures. Previous successful se…

astro-ph.CO2013★ 2 cited

Spectroscopy in the Era of LSST

Thomas Matheson, Xiaohui Fan, Richard Green +5

This report summarizes the results of the 'Spectroscopy in the Era of LSST' workshop held April 11-12, 2013 in Tucson, Arizona. At the workshop, there were breakout sessions coveri…