120 citations · 422 across the 9 of their papers we have counts for
9 papers · 1 filter
Kinematics of Circumgalactic O VI Gas and Disk Rotation of Star-forming Galaxies
Stephanie H. Ho, Crystal L. Martin, Hasti Nateghi +2
Quasar sightline observations reveal that low-ionization-state gas corotates with the galaxy disk and often at sub-centrifugal velocities, suggesting that the gas is spiraling towa…
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…
How identifying circumgalactic gas by line-of-sight velocity instead of the location in 3D space affects O VI measurements
Stephanie H. Ho, Crystal L. Martin, Joop Schaye
The high incidence rate of the O VI 1032,1038 absorption around low-redshift, star-forming galaxies has generated interest in studies of the circumgalactic medium.…
Morphological and Rotation Structures of Circumgalactic Mg II Gas in the EAGLE Simulation and the Dependence on Galaxy Properties
Stephanie H. Ho, Crystal L. Martin, Joop Schaye
Low-ionization-state Mg II gas has been extensively studied in quasar sightline observations to understand the cool, K gas in the circumgalactic medium. Motivated by r…
How Gas Accretion Feeds Galactic Disks
Stephanie H. Ho, Crystal L. Martin, Monica L. Turner
Numerous observations indicate that galaxies need a continuous gas supply to fuel star formation and explain the star formation history. However, direct observational evidence of g…
Resolving 3D Disk Orientation using High-Resolution Images: New Constraints on Circumgalactic Gas Inflows
Stephanie H. Ho, Crystal L. Martin
We constrain gas inflow speeds in star-forming galaxies with color gradients consistent with inside-out disk growth. Our method combines new measurements of disk orientation with p…
Kinematics of Circumgalactic Gas: Feeding Galaxies and Feedback
Crystal L. Martin, Stephanie H. Ho, Glenn G. Kacprzak +1
We present observations of 50 pairs of redshift z ~ 0.2 star-forming galaxies and background quasars. These sightlines probe the circumgalactic medium (CGM) out to half the virial…
Quasars Probing Galaxies: I. Signatures of Gas Accretion at Redshift Approximately 0.2
Stephanie H. Ho, Crystal L. Martin, Glenn G. Kacprzak +1
We describe the kinematics of circumgalactic gas near the galactic plane, combining new measurements of galaxy rotation curves and spectroscopy of background quasars. The sightline…
New Perspective on Galaxy Outflows From the First Detection of Both Intrinsic and Traverse Metal-Line Absorption
Glenn G. Kacprzak, Crystal L. Martin, Nicolas Bouché +6
We present the first observation of a galaxy (z=0.2) that exhibits metal-line absorption back-illuminated by the galaxy ("down-the-barrel") and transversely by a background quasar…