116 citations · 213 across the 14 of their papers we have counts for
14 papers
A Partial Lyman Limit Absorber in the Halo of a Galaxy Pair: A Possible Signature of Gas Inflow
Sumukha R. Bharadwaj, Anand Narayanan, Sowgat Muzahid +2
We present an analysis of a partial Lyman limit system at z = 0.87641 detected in the HST/COS spectrum of the background quasar LBQS 0107-0235. The absorber exhibits a simple kinem…
The chemodynamical signature of coherent metal-poor inflow and enriched recycled accretion in the cool circumgalactic medium
Glenn G. Kacprzak, Jerrard Doran, Sameer +7
The azimuthal and kinematic structure of the CGM is often interpreted as planar accretion and bipolar outflows, yet direct metallicity evidence for this picture remains ambiguous.…
Revealing Cosmic Ecosystems with the Hubble Space Telescope in 2030s and Beyond
Sanchayeeta Borthakur, Tanmay Singh, David French +22
Ultraviolet spectroscopy with the Hubble Space Telescope (HST) provides the most direct and sensitive probe of the disk-circumgalactic medium (CGM) interface at radii of 20 kpc, wh…
High-S/N Quasar Observations with HST/COS: Deep Fields for Spectroscopy
Andrew J. Fox, Jerry Kriss, Philipp Richter +49
Hubble is still in prime observing condition for making transformative discoveries in UV astronomy. In this white paper we describe the science case for a deep (S/N>30) UV spectros…
Reporting a Deficit of Intrinsic NV Absorbers in Core-dominated, Radio-loud Quasars
Chris Culliton, Amber Roberts, Bryan DeMarcy +5
We searched the Hubble Space Telescope Cosmic Origins Spectrograph archive for ultraviolet spectra of 428 AGN to identify intrinsic NV absorption systems. We filtered out Type 2 AG…
Kinematic analysis of an Ultra-Strong MgII absorber at z~1.13 linking to Circumgalactic Gas Structures
Purvi Udhwani, Sameer, Anand Narayanan +3
We present a spectroscopic and imaging analysis of the ultra-strong MgII absorption system identified in the /UVES spectrum of a background quasar loc…
Studying the gaseous outskirts of galaxy groups with coherent Ly alpha absorption patterns
P. Richter, J. C. Charlton, A. J. Fox +2
In this study, we explore the properties of diffuse intergalactic gas residing in the outskirts of the four nearby, low-mass galaxy groups NGC1052, NGC5866, NGC4631, and NGC3992 (a…
COS-EDGES: Co-rotation and Kinematic Stratification of the Multi-Phase CGM Around Edge-On Galaxies
Glenn G. Kacprzak, Benjamin D. Oppenheimer, Nikole M. Nielsen +10
We present the first results from the COS-EDGES survey, targeting the kinematic connection between the ISM and multi-phase circumgalactic medium (CGM) in nine isolated, edge-on gal…
Cloud-by-cloud Multiphase Investigation of the Circumgalactic Medium of Low-redshift Galaxies
Sameer, Jane C. Charlton, Bart P. Wakker +10
The pervasive presence of warm gas in galaxy halos suggests that the circumgalactic medium (CGM) is multiphase in its ionization structure and complex in its kinematics. Some recen…
Signatures of gas flows-II: Connecting the kinematics of the multiphase circumgalactic medium to galaxy rotation
Hasti Nateghi, Glenn G. Kacprzak, Nikole M. Nielsen +4
The multiphase CGM hosts critical processes that affect galaxy evolution such as accretion and outflows. We searched for evidence of these phenomena by using the EW co-rotation fra…
Signatures of gas flows-I: Connecting the kinematics of the HI circumgalactic medium to galaxy rotation
Hasti Nateghi, Glenn G. Kacprzak, Nikole M. Nielsen +5
The CGM hosts many physical processes with different kinematic signatures that affect galaxy evolution. We address the CGM-galaxy kinematic connection by quantifying the fraction o…
COS-Weak: Probing the CGM using analogs of weak Mg II absorbers at z < 0.3
Sowgat Muzahid, Gloria Fonseca, Amber Roberts +5
We present a sample of 34 weak metal line absorbers at complied via the simultaneous detections () of the SiII and CII absorption lines, with…
An HST/COS legacy survey of high-velocity ultraviolet absorption in the Milky Way's circumgalactic medium and the Local Group
P. Richter, S. E. Nuza, A. J. Fox +9
To characterize the absorption properties of this circumgalactic medium (CGM) and its relation to the LG we present the so-far largest survey of metal absorption in Galactic high-v…
The neutral gas extent of galaxies as derived from weak intervening CaII absorbers
P. Richter, F. Krause, C. Fechner +2
(Abridged) We present a systematic study of weak intervening CaII absorbers at low redshift (z<0.5), based on the analysis of archival high resolution (R>45,000) optical spectra of…