350 citations · 2k across the 43 of their papers we have counts for
43 papers
Merger-induced star formation in low-metallicity dwarf galaxy NGC 4809/4810
Yulong Gao, Qiusheng Gu, Guilin Liu +5
The physical mechanisms driving starbursts in dwarf galaxies are unclear, and the effects of mergers on star formation in these galaxies are still uncertain. We explore how the mer…
Discovery of spectacular quasar-driven superbubbles in red quasars
Lu Shen, Guilin Liu, Zhicheng He +7
Quasar-driven outflows on galactic scales are a routinely invoked ingredient for galaxy formation models. We report the discovery of ionized gas nebulae as traced by [O III] 500…
First results from the JWST Early Release Science Program Q3D: Benchmark Comparison of Optical and Mid-IR Tracers of a Dusty, Ionized Red Quasar Wind at z=0.435
D. S. N. Rupke, D. Wylezalek, N. L. Zakamska +27
The [OIII] 5007 A emission line is the most common tracer of warm, ionized outflows in active galactic nuclei across cosmic time. JWST newly allows us to use mid-infrared spectral…
Sciences with the 2.5-meter Wide Field Survey Telescope (WFST)
WFST Collaboration, Tinggui Wang, Guilin Liu +60
The Wide Field Survey Telescope (WFST) is a dedicated photometric surveying facility being built jointly by the University of Science and Technology of China and the Purple Mountai…
The ALPINE-ALMA [CII] survey: The infrared-radio correlation and AGN fraction of star-forming galaxies at z 4.4-5.9
Lu Shen, Brian C. Lemaux, Lori M. Lubin +26
We present the radio properties of 66 spectroscopically-confirmed normal star-forming galaxies (SFGs) at in the COSMOS field that were [C II] detected in the Atacama La…
CO Excitation and its Connection to Star Formation at 200 pc in NGC 1365
Fumi Egusa, Yulong Gao, Kana Morokuma-Matsui +2
We report high resolution 2" ~ 200 pc mappings of the central region of the nearby barred spiral galaxy NGC 1365 in the CO(1--0) and CO(2--1) emission lines. The 2--1/1--0 ratio of…
Evidence for quasar fast outflows being accelerated at the scale of tens of parsecs
Zhicheng He, Guilin Liu, Tinggui Wang +14
Quasar outflows may play a crucial role in regulating the host galaxy, although the spatial scale of quasar outflows remain a major enigma, with their acceleration mechanism poorly…
Evidence for the connection between star formation rate and evolutionary phases of quasars
Zhifu Chen, Zhicheng He, Luis C. Ho +5
Both theory and observations suggest that outflows driven by an active central supermassive black hole (SMBH) has a feedback effect on shaping the global properties of the host gal…
B2 0003+38A: a classical flat-spectrum radio quasar hosted by a rotation-dominated galaxy with a peculiar massive outflow
Qinyuan Zhao, Luming Sun, Lu Shen +3
We present a detailed analysis of the single-slit optical spectrum of the Flat-Spectrum Radio Quasar (FSRQ) B2 0003+38A, taken by the Echellette Spectrograph and Imager (ESI) on th…
The Nuclear Region of NGC1365: Star Formation, Negative Feedback, and Outflow Structure
Yulong Gao, Fumi Egusa, Guilin Liu +5
High-resolution observations of ionized and molecular gas in the nuclear regions of galaxies are indispensable for delineating the interplay of star formation, gaseous inflows, ste…
Implications of the Environments of Radio-detected AGN in a Complex Protostructure at z3.3
Lu Shen, Brian C. Lemaux, Lori M. Lubin +15
Radio Active Galactic Nuclei (RAGNs) are mainly found in dense structures (i.e., clusters/groups) at redshifts of z2 and are commonly used to detect protoclusters at higher reds…
A sharp rise in the detection rate of broad absorption line variations in a quasar SDSS J141955.26+522741.1
Qinyuan Zhao, Zhicheng He, Guilin Liu +4
We present an analysis of the variability of broad absorption lines (BALs) in a quasar SDSS J141955.26+522741.1 at with 72 observations from the Sloan Digital Sky Survey…
Extended radio AGN at z ~ 1 in the ORELSE survey: The confining effect of dense environments
Lu Shen, Guilin Liu, Mengfei Zhang +16
Recent hydrodynamic simulations and observations of radio jets have shown that the surrounding environment has a large effect on their resulting morphology. To investigate this we…
An Extraordinary Response of Iron Emission to the Central Outburst in a Tidal Disruption Event Candidate
Zhicheng He, Ning Jiang, Tinggui Wang +9
Understanding the origin of \feii\ emission is important because it is crucial to construct the main sequence of Active Galactic Nuclei (AGNs). Despite several decades of observati…
Fast Inflow Directly Feeding Black Hole Accretion Disk in Quasars
Hongyan Zhou, Xiheng Shi, Weimin Yuan +21
Quasars are high-luminosity active galactic nuclei believed to be powered by accretion of interstellar matter onto a super-massive black hole (SMBH) therein. Most of the observed e…
Host galaxies of high-redshift extremely red and obscured quasars
Nadia L. Zakamska, Ai-Lei Sun, Michael A. Strauss +9
We present Hubble Space Telescope 1.4-1.6 micron images of the hosts of ten extremely red quasars (ERQs) and six type 2 quasar candidates at z=2-3. ERQs, whose bolometric luminosit…
Mapping the Inner Structure of Quasars with Time-Domain Spectroscopy
Yue Shen, Scott Anderson, Edo Berger +40
The ubiquitous variability of quasars across a wide range of wavelengths and timescales encodes critical information about the structure and dynamics of the circumnuclear emitting…
The properties of broad absorption line outflows based on a large sample of quasars
Zhicheng He, Tinggui Wang, Guilin Liu +8
Quasar outflows carry mass, momentum and energy into the surrounding environment, and have long been considered a potential key factor in regulating the growth of supermassive blac…
What determines the local metallicity of galaxies: global stellar mass, local stellar mass surface density or star formation rate?
Yulong Gao, Enci Wang, Xu Kong +8
The metallicity and its relationship with other galactic properties is a fundamental probe of the evolution of galaxies. In this work, we select about 750,000 star-forming spatial…
Distance, Energy, and Variability of Quasar Outflows: Two HST/COS epochs of LBQS 1206+1052
Timothy R. Miller, Nahum Arav, Xinfeng Xu +4
We analyze new HST/COS spectra for two quasar absorption outflows seen in the quasi-stellar object LBQS 1206+1052. These data cover, for the first time, absorption troughs from $S_…
Evidence that 50% of BALQSO Outflows Are Situated at Least 100 pc from the Central Source
Nahum Arav, Guilin Liu, Xinfeng Xu +3
The most robust way for determining the distance of quasar absorption outflows is the use of troughs from ionic excited states. The column density ratio between the excited and res…
Leaked Lya emission: an indicator of the size of quasar absorption outflows
Zhicheng He, Guilin Liu, Tinggui Wang +2
The galactocentric distance of quasar absorption outflows are conventionally determined using absorption troughs from excited states, a method hindered by severely saturated or sel…
SDSS J1640+1932: a spectacular galaxy-quasar strong lens system
Lin Wang, Yiping Shu, Ran Li +3
We present Canada-France-Hawaii Telescope (CFHT) MegaCam observations of a galaxy-quasar strong gravitational lens system, SDSS J1640+1932. This system, located at z=0.195 (foregro…
Variation of ionizing continuum: the main driver of Broad Absorption Line Variability
Zhicheng He, Tinggui Wang, Hongyan Zhou +5
We present a statistical analysis of the variability of broad absorption lines (BALs) in quasars using the large multi-epoch spectroscopic dataset of the Sloan Digital Sky Survey D…