Results 71 to 80 of about 434 (176)

Measuring radial flows in disc galaxies

Astronomy & Astrophysics
Numerous theoretical studies suggest that gas accretion from the intergalactic medium is essential to feed star formation in galaxies throughout cosmic time. However, the mechanism of gas accretion remains poorly understood, as direct evidence is lacking.
He Yi, Fraternali Filippo, Mancera Piña Pavel E., Di Teodoro Enrico M.   +3 more
doaj   +1 more source

Hot gas in the Local Group and low-redshift intergalactic medium [PDF]

, 2006
There is increasing observational evidence that hot, highly ionized interstellar and intergalactic gas plays a significant role in the evolution of galaxies in the local universe. The primary spectral diagnostics of the warm-hot interstellar/intergalactic medium are ultraviolet and X-ray absorption lines of O VI and O VII.
openaire   +2 more sources

The Evolution of Galaxies and Clusters at High Spatial Resolution with Advanced X-ray Imaging Satellite (AXIS)

Universe
Stellar and black hole feedback heat and disperse surrounding cold gas clouds, launching gas flows off circumnuclear and galactic disks, producing a dynamic interstellar medium.
Helen R. Russell, Laura A. Lopez, Steven W. Allen, George Chartas, Prakriti Pal Choudhury, Renato A. Dupke, Andrew C. Fabian, Anthony M. Flores, Kristen Garofali, Edmund Hodges-Kluck, Michael J. Koss, Lauranne Lanz, Bret D. Lehmer, Jiang-Tao Li, W. Peter Maksym, Adam B. Mantz, Michael McDonald, Eric D. Miller, Richard F. Mushotzky, Yu Qiu, Christopher S. Reynolds, Francesco Tombesi, Paolo Tozzi, Anna Trindade-Falcão, Stephen A. Walker, Ka-Wah Wong, Mihoko Yukita, Congyao Zhang   +27 more
doaj   +1 more source

Discovery of a Large-scale H i Plume in the NGC 7194 Group

The Astrophysical Journal Letters
We present the discovery of a new H i structure in the NGC 7194 group from the observations using the Karl G. Jansky Very Large Array. NGC 7194 group is a nearby ( z ∼ 0.027) small galaxy group with five quiescent members.
Mina Pak, Junhyun Baek, Joon Hyeop Lee, Aeree Chung, Matt Owers, Hyunjin Jeong, Eon-Chang Sung, Yun-Kyeong Sheen   +7 more
doaj   +1 more source

"Fermi" bubbles are bursting from our galaxy. Their origins remain a mystery. [PDF]

Proc Natl Acad Sci U S A, 2023
Mann A.
europepmc   +1 more source

The Circumgalactic Medium with Local Universe Fast Radio Bursts: Evidence of Strong Active Galactic Nucleus Feedback in a Massive Elliptical Galaxy

The Astrophysical Journal Letters
Modern cosmology and galaxy formation rely on an understanding of how cosmic baryons are distributed, a significant portion of which exists in the diffuse gas confined to halos. Fast radio bursts (FRBs) are a promising probe of the Universe’s ionized gas.
Samuel McCarty, Liam Connor, Ralf M. Konietzka   +2 more
doaj   +1 more source

Interpretable machine learning of halo gas density profiles: a sensitivity analysis of cosmological hydrodynamical simulations

The Open Journal of Astrophysics
Stellar and AGN-driven feedback processes affect the distribution of gas on a wide range of scales, from within galaxies well into the intergalactic medium. Yet, it remains unclear how feedback, through its connection to key galaxy properties, shapes the
Daniele Sorini, Sownak Bose, Mathilda Denison, Romeel Davé   +3 more
doaj   +1 more source

Accretion by the Galaxy

EPJ Web of Conferences, 2012
Cosmology requires at least half of the baryons in the Universe to be in the intergalactic medium, much of which is believed to form hot coronae around galaxies. Star-forming galaxies must be accreting from their coronae.
Binney J., Fraternali F.
doaj   +1 more source

Spatially and Dynamically Extended Molecular Gas in Stephan’s Quintet Revealed by ALMA CO(1–0) Total Power Mapping

The Astrophysical Journal
We present Atacama Large Millimeter/submillimeter Array Total Power CO(1–0) mapping of Stephan’s Quintet (SQ), a prototypical compact galaxy group, with a uniform noise level at a spatial scale of ∼25 kpc.
Fumiya Maeda, Shinya Komugi, Kazuyuki Muraoka, Misaki Yamamoto, Fumi Egusa, Kouji Ohta, Yoshihisa Asada, Asao Habe, Bunyo Hatsukade, Hiroyuki Kaneko, Masato I. N. Kobayashi, Kotaro Kohno, Ayu Konishi, Ren Matsusaka, Kana Morokuma-Matsui, Kouichiro Nakanishi, Tomoka Tosaki, Akiyoshi Tsujita   +17 more
doaj   +1 more source

China's 'sky eye': exploring the universe by measuring faint cosmic radio signals. [PDF]

Natl Sci Rev, 2023
Zhao W.
europepmc   +1 more source