8 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 paper analyzes how metallicity, ionisation state, and kinematics of circumgalactic gas vary with azimuthal angle around galaxies, finding metal-poor inflow along the disk plane…
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…