Results 61 to 70 of about 1,565,970 (180)

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

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

Discovery of Optically Emitting Circumgalactic Nebulae around the Majority of UV-luminous Quasars at Intermediate Redshift

The Astrophysical Journal
We report the discovery of large, ionized, [O ii ]-emitting circumgalactic nebulae around the majority of 30 UV-luminous quasars at z = 0.4–1.4 observed with deep, wide-field integral field spectroscopy with the Multi-Unit Spectroscopy Explorer (MUSE) by
Sean D. Johnson, Zhuoqi (Will) Liu, Jennifer I-Hsiu Li, Joop Schaye, Jenny E. Greene, Sebastiano Cantalupo, Gwen C. Rudie, Zhijie Qu, Hsiao-Wen Chen, Marc Rafelski, Sowgat Muzahid, Mandy C. Chen, Thierry Contini, Wolfram Kollatschny, Nishant Mishra, Patrick Petitjean, Michael Rauch, Fakhri S. Zahedy   +17 more
doaj   +1 more source

MUSEQuBES: The Column Density, Covering Fraction, and Mass of O vi-bearing Gas in and Around Low-redshift Galaxies

The Astrophysical Journal
We present a study of O vi -bearing gas around 247 low-mass (median ${\mathrm{log}}_{10}({M}_{\star }/{M}_{\odot })$ = 8.7) galaxies at low redshifts (0.1 < z < 0.7) using background quasars as part of the MUSE Quasar-fields Blind Emitters Survey ...
Sayak Dutta, Sowgat Muzahid, Joop Schaye, Nicolas F. Bouché, Sebastiano Cantalupo, Hsiao-Wen Chen, Sean Johnson   +6 more
doaj   +1 more source

Accretion-driven turbulence in the circumgalactic medium

Monthly Notices of the Royal Astronomical Society
ABSTRACT Simulations suggest that turbulence is ubiquitous in the circumgalactic medium (CGM), though the source and properties of CGM turbulence is uncertain. Using analytic considerations and hydrodynamic simulations, we study how CGM turbulence is driven by gas accretion, thus providing a baseline for additional turbulence driving ...
Roy Goldner, Jonathan Stern, Drummond Fielding, Claude-André Faucher-Giguère, Yakov Faerman, Aharon Kakoly   +5 more
openaire   +2 more sources

Unveiling the Sources of X-Ray Luminosity in DESI Galaxy Groups: Insights from the SRG/eROSITA All-sky Survey

The Astrophysical Journal
We use the first eROSITA all-sky survey to investigate the contributions of active galactic nuclei (AGN) and extended gas to the total X-ray luminosity ( L _X ) of galaxy groups with different halo masses ( M _h ) at different redshifts.
Yun-Liang Zheng, Xiaohu Yang, Teng Liu, Shijiang Chen, Esra Bulbul, Ang Liu, Yi Zhang, Dawei Li, Xi Kang, Yizhou Gu, Yirong Wang, Qingyang Li, Jiaqi Wang   +12 more
doaj   +1 more source

The origin of cold gas in the circumgalactic medium

Astronomy & Astrophysics
Context. The presence of cold gas (T ≲ 104 K) in the circumgalactic medium (CGM) of galaxies has been confirmed in observations and in high-resolution simulations, but its origin is still a puzzle. Possible mechanisms are cold accretion from the intergalactic medium (IGM), clumps embedded in outflows and transported from the disk, and gas detaching ...
Decataldo, Davide, Shen, Sijing, Mayer, Lucio, Baumschlager, Bernhard, Madau, Piero   +4 more
openaire   +4 more sources

Selikung Jurnal Medium [PDF]

, 2019
Selikung Jurnal ...
Medium, Jurnal
core  

Detection of diffuse HI emission in the circumgalactic medium of NGC891 and NGC4565 -- II [PDF]

, 2023
We probe the neutral circumgalactic medium (CGM) along the major axes of NGC891 and NGC4565 in 21-cm emission out to $\gtrsim 100$kpc using the Green Bank Telescope (GBT), extending our previous minor axes observations.
Pisano, D. J., Das, Sanskriti, Leroy, Adam, Sardone, Amy, Pingel, Nickolas M., Heald, George, Rickel, Mary, Mathur, Smita, Kingsbury, Joshua   +8 more
core  

MUSEQuBES: The Kinematics of O vi-bearing Gas in and around Low-redshift Galaxies

The Astrophysical Journal
We present a detailed study of the kinematics of O vi -bearing gas around 60 low-mass (median ${\mathrm{log}}_{10}({M}_{\star }/{M}_{\odot })$  = 8.9) galaxies at low redshift (0.1 
Sayak Dutta, Sowgat Muzahid, Joop Schaye, Sebastiano Cantalupo, Hsiao-Wen Chen, Sean Johnson   +5 more
doaj   +1 more source