116 citations · 296 across the 11 of their papers we have counts for
11 papers
Studying the absorption signatures of H I Lyman-α in the warm-hot circumgalactic medium with TNG50
P. Aparicio Marcos, P. Richter, M. Sparre +2
In this study, we investigate the spectral signatures of neutral hydrogen Lyman- absorption arising from the warm-hot gas component of the circumgalactic medium (CGM) around $z=…
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…
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…
The Metallicities of Five Small High-Velocity Clouds
Trisha Ashley, Andrew J. Fox, Felix J. Lockman +5
High-velocity clouds (HVCs) are multi-phase gas structures whose velocities (|v_LSR|>100 km/s) are too high to be explained by Galactic disk rotation. While large HVCs are well cha…
Circumgalactic gas at its extreme: tidal gas streams around the Whale galaxy NGC 4631 explored with HST/COS
P. Richter, B. Winkel, B. P. Wakker +8
We present a detailed analysis of the absorption properties of one of the tidal gas streams around the Whale galaxy NGC4631 in the direction of the quasar 2MASSJ12421031+3214268. 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…
An HST/COS legacy survey of intervening SiIII absorption in the extended gaseous halos of low-redshift galaxies
P. Richter, B. P. Wakker, C. Fechner +3
Doubly ionized silicon (SiIII) is a powerful tracer of diffuse ionized gas inside and outside of galaxies. It can be observed in the local Universe in ultraviolet (UV) absorption a…
High-resolution absorption spectroscopy of the circumgalactic medium of the Milky Way
P. Richter, A. J. Fox, N. Ben Bekhti +3
In this article we discuss the importance of high-resolution absorption spectroscopy for our understanding of the distribution and physical nature of the gaseous circumgalactic med…
An absorption-selected survey of neutral gas in the Milky Way halo
N. Ben Bekhti, B. Winkel, P. Richter +3
We aim at analysing systematically the distribution and physical properties of neutral and mildly ionised gas in the Milky Way halo, based on a large absorption-selected data set.…
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…