Results 61 to 70 of about 434 (176)

A Classification Scheme for Quasar Absorption Lines

The Astrophysical Journal
We present a method to classify intergalactic absorption lines and apply it to 10,772 low-redshift systems. The classification gives the number of components (reflecting the kinematics) in four different ionization phases, using detections and ...
Benjamin E. Rosenwasser, Bart P. Wakker, Blair D. Savage   +2 more
doaj   +1 more source

Revisiting Ram Pressure Stripping in Wolf–Lundmark–Melotte: No Evidence for Stripped H I with Local Group L-Band Survey

The Astronomical Journal
We analyze H i 21 cm observations of the Local Group dwarf galaxy Wolf–Lundmark–Melotte (WLM) from the Local Group L -Band Survey to search for evidence of ram pressure stripping.
Daniel R. Rybarczyk, Eric W. Koch, Fabian Caballero Vargas, Snežana Stanimirović, Nickolas M. Pingel, Julianne J. Dalcanton, Adam K. Leroy, Erik W. Rosolowsky, Michael P. Busch, Chang-Goo Kim, Adam Smercina, Elizabeth Tarantino, Vicente Villanueva, Alberto D. Bolatto, Thomas G. Williams   +14 more
doaj   +1 more source

Intergalactic Filaments as Isothermal Gas Cylinders

, 2010
Revision of 1012.1293. Minor changes.
Harford, A. Gayler, Hamilton, Andrew J. S.   +1 more
openaire   +2 more sources

The COS CGM Compendium. V. The Dichotomy of O vi Associated with Low- and High-metallicity Cool Gas at z < 1

The Astrophysical Journal
We analyze the O vi content and kinematics for 126 H i -selected absorbers at 0.14 ≲ z ≲ 0.73 for which the metallicities of their cool photoionized phase have been determined. We separate the absorbers into 100 strong Ly α forest systems (SLFSs with 15 ≲
Sameer, Nicolas Lehner, J. Christopher Howk, Andrew J. Fox, John M. O’Meara, Benjamin D. Oppenheimer   +5 more
doaj   +1 more source

Statistical Properties of Cold Streams in Massive Star-forming Halos in TNG50

The Astrophysical Journal
Cold, dense streams of gas are predicted to penetrate deeply into massive (≳10 ^12 M _⊙ ) halos at cosmic noon ( z  ∼ 4–2), fueling galaxies to sustain high star formation rates.
Isabel Medlock, Daisuke Nagai, Nir Mandelker, Volker Springel, Frank C. van den Bosch, Elad Zinger, Barry T. Chiang   +6 more
doaj   +1 more source

Multiphase Gas Interactions on Subarcsec Scales in the Shocked Intergalactic Medium of Stephan’s Quintet with JWST and ALMA

The Astrophysical Journal, 2023
We combine James Webb Space Telescope (JWST) and Hubble Space Telescope imaging with Atacama Large Millimeter Array CO(2–1) spectroscopy to study the highly turbulent multiphase intergalactic medium (IGM) in Stephan’s Quintet on 25–150 pc scales ...
P. N. Appleton, P. Guillard, Bjorn Emonts, Francois Boulanger, Aditya Togi, William T. Reach, Kathleen Alatalo, M. Cluver, T. Diaz Santos, P.-A. Duc, S. Gallagher, P. Ogle, E. O’Sullivan, K. Voggel, C. K. Xu   +14 more
doaj   +1 more source

Heating of Intergalactic Gas and Cluster Scaling Relations [PDF]

The Astrophysical Journal, 2000
32 pages Latex including 9 encapsulated postscript files, uses aaspp4 and epsf style files, accepted for publication in ...
openaire   +2 more sources

Recycled Gas Dominates the Metal-rich Fuel of Supermassive Black Holes

The Astrophysical Journal
Understanding the origin and chemical properties of gas accreted by supermassive black holes (SMBHs) is essential for linking black hole growth to galaxy evolution.
Dongyun Kwak, Ena Choi, Hannah Jhee, Rachel S. Somerville, Thorsten Naab, Michaela Hirschmann, Jaejin Shin, Jong-Hak Woo   +7 more
doaj   +1 more source

A Global Census of Metals in the Universe

The Astrophysical Journal
We present a census of the mass density of metals and their evolution with cosmic time on a global scale throughout the Universe, synthesizing robust estimates of metals in stars, hot intracluster gas, and gaseous absorbers tracing neutral gas as well as
Saloni Deepak, J. Christopher Howk, Nicolas Lehner, Céline Péroux   +3 more
doaj   +1 more source

Intergalactic neutral hydrogen gas in the Grus quartet of galaxies [PDF]

Astronomy & Astrophysics, 2004
Australia Telescope Compact Array multi-configuration mosaicing of the Grus quartet of galaxies reveals the presence of spectacular tidal structures. 2.1 x 10 9 M ○. of neutral atomic hydrogen (H I) gas, i.e. 11% of all HI in the group, are found to be dragged from NGC7582 into intergalactic space. About 1.34 x 10 9 M ○.
openaire   +1 more source