Results 61 to 70 of about 1,770 (180)

DUST IN THE CIRCUMGALACTIC MEDIUM OF LOW-REDSHIFT GALAXIES [PDF]

The Astrophysical Journal, 2015
Using spectroscopically selected galaxies from the Sloan Digital Sky Survey we present a detection of reddening due to dust in the circumgalactic medium of galaxies. We detect the mean change in the colors of "standard crayons" correlated with the presence of foreground galaxies at z ~0.05 as a function of angular separation.
J. E. G. Peek, Brice Ménard, Lia Corrales   +2 more
openaire   +3 more sources

Analyzing Oxygen Ionization in the Circumgalactic Medium

Research Notes of the AAS, 2021
Abstract Galaxies are surrounded by low-density, highly-ionized clouds of gas, called the Circumgalactic Medium (CGM), which provides insight into galaxy evolution. CGM observations are sensitive to ionization levels, which requires studying ionization types: photoionization (PI), more density-dependent and associated with cooler gas ...
Sally Zhu, Rahul Sharma, Clayton J. Strawn   +2 more
openaire   +1 more source

Figuring Out Gas and Galaxies in Enzo (FOGGIE). IX. The Angular Momentum Evolution of Milky Way–like Galaxies and Their Circumgalactic Gas

The Astrophysical Journal
We investigate the coevolution of the angular momentum of Milky Way–like galaxies, their circumgalactic gas, and their dark matter halos using zoom-in simulations from the Figuring Out Gas and Galaxies in Enzo suite.
Raymond C. Simons, Molly S. Peeples, Jason Tumlinson, Brian W. O’Shea, Cassandra Lochhaas, Anna C. Wright, Ayan Acharyya, Ramona Augustin, Kathleen A. Hamilton-Campos, Britton D. Smith, Nicolas Lehner, Jessica K. Werk, Yong Zheng   +12 more
doaj   +1 more source

DUST IN THE CIRCUMGALACTIC MEDIUM OF LOW-REDSHIFT GALAXIES

, 2014
Using spectroscopically selected galaxies from the Sloan Digital Sky Survey we present a detection of reddening effects from the circumgalactic medium of galaxies which we attribute to an extended distribution of dust.
Menard, Brice, Corrales, Lia, Peek, J. E. G.   +2 more
core   +1 more source

The circumgalactic medium

This is a pre-print of a chapter for the Encyclopedia of Astrophysics (edited by I. Mandel, section editor S.
Chen, Hsiao-Wen, Zahedy, Fakhri S.
openaire   +2 more sources

The SUPERCOLD-CGM Survey. I. Probing the Extended CO(4–3) Emission of the Circumgalactic Medium in a Sample of 10 Enormous Lyα Nebulae at z ∼ 2

The Astrophysical Journal, 2023
To understand how massive galaxies at high z coevolve with enormous reservoirs of halo gas, it is essential to study the coldest phase of the circumgalactic medium (CGM), which directly relates to stellar growth.
Jianrui Li, Bjorn H. C. Emonts, Zheng Cai, Jianan Li, Fabrizio Arrigoni Battaia, Jason X Prochaska, Ilsang Yoon, Matthew D. Lehnert, Craig Sarazin, Yunjing Wu, Mark Lacy, Brian Mason, Kyle Massingill   +12 more
doaj   +1 more source

On the Origin of High-velocity Clouds in the Galaxy

The Astrophysical Journal
The origin of our Galaxy’s high-velocity clouds (HVCs) remains a mystery after many decades of effort. In this paper, we use the TNG50 simulation of the IllustrisTNG project to identify cool, dense clouds that match observations of Galactic H i HVCs.
Scott Lucchini, Jiwon Jesse Han, Lars Hernquist, Charlie Conroy   +3 more
doaj   +1 more source

Metal Enrichment in the Circumgalactic Medium and Lyα Halos around Quasars at z ∼ 3

, 2020
Deep observations have detected extended Lyα emission nebulae surrounding tens of quasars at redshift 2–6. However, the metallicity of such extended halos is still poorly understood. We perform a detailed analysis on a large sample of 80 quasars at z ∼ 3

core   +1 more source

Understanding magnetic fields in circumgalactic gas

, 2023
Many galaxies in the Universe, including our own Milky Way, are sites of star formation. For them to continue producing stars over cosmic time, they require a steady supply of cold gas.
Jung, Seoyoung Lyla
core   +1 more source

FEASTS Combined with Interferometry. IV. Mapping H i Emission to a Limit of NH i = 1017.7 cm−2 in Seven Edge-on Galaxies

The Astrophysical Journal
We present a statistical study of the neutral atomic hydrogen (H i ) gas extending into the circumgalactic medium perpendicular to the disk for seven edge-on galaxies with inclinations above 85° from the FEASTS program with a 3 σ (20 km s ^−1 ) column ...
Dong Yang, Jing Wang, Zhijie Qu, Zezhong Liang, Xuchen Lin, Simon Weng, Xinkai Chen, Barbara Catinella, Luca Cortese, D. B. Fisher, Luis C. Ho, Yingjie Jing, Fangzhou Jiang, Peng Jiang, Ziming Liu, Céline Péroux, Li Shao, Lister Staveley-Smith, Q. Daniel Wang, Jie Wang   +19 more
doaj   +1 more source