Results 11 to 20 of about 1,565,970 (180)
Enriching the hot circumgalactic medium [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 Models of galaxy formation in a CDM universe predict that massive galaxies are surrounded by a hot, quasi-hydrostatic circumgalactic corona of slowly cooling gas, predominantly accreted from the IGM. This prediction is borne out by the cosmological hydrodynamical simulations of Crain et al., which reproduce scaling relations between the X-ray and ...
Crain, R.A. +4 more
core +10 more sources
Magnetizing the circumgalactic medium of disc galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT The circumgalactic medium (CGM) is one of the frontiers of galaxy formation and intimately connected to the galaxy via accretion of gas on to the galaxy and gaseous outflows from the galaxy. Here, we analyse the magnetic field in the CGM of the Milky Way-like galaxies simulated as part of the auriga project that constitutes a ...
Rüdiger Pakmor +9 more
core +14 more sources
Efficiency of thermal conduction in a magnetized circumgalactic medium [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT The large temperature difference between cold gas clouds around galaxies and the hot haloes that they are moving through suggests that thermal conduction could play an important role in the circumgalactic medium. However, thermal conduction in the presence of a magnetic field is highly anisotropic, being strongly suppressed in ...
Richard Kooij +2 more
openaire +6 more sources
The Circumgalactic Medium of Andromeda [PDF]
Proceedings of the International Astronomical Union, 2016 AbstractOur view of galaxies has been transformed in recent years with diffuse halo gas surrounding galaxies that contains at least as many metals and baryons as their disks. While single sight lines through galaxy halos seen in absorption have provided key new constraints, they provide only average properties. Our massive neighbor, the Andromeda (M31)
Nicolas Lehner, null null
openaire +2 more sources
The circumgalactic medium of high-redshift galaxies [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2014 Abstract We study the properties of the circumgalactic medium (CGM) of high-z galaxies in the metal enrichment simulations presented in Pallottini et al. At z = 4, we find that the simulated CGM gas density profiles are self-similar, once scaled with the virial radius of the parent dark matter halo.
PALLOTTINI, ANDREA +2 more
openaire +3 more sources
THE IMPACT OF STARBURSTS ON THE CIRCUMGALACTIC MEDIUM [PDF]
The Astrophysical Journal, 2013 We present a study exploring the impact of a starburst on the properties of the surrounding circum-galactic medium (CGM): gas located beyond the galaxy's stellar body and extending out to the virial radius (200 kpc). We obtained ultraviolet spectroscopic data from the Cosmic Origin Spectrograph (COS) probing the CGM of 20 low-redshift foreground ...
Borthakur +5 more
openaire +6 more sources
The Study of the Circumgalactic Medium with Quasar Pairs
The Astrophysical Journal Supplement Series, 2023 We have collected 10,025 foreground–background quasar pairs with projected distances d _p < 500 kpc from the large quasar catalog of the Sloan Digital Sky Survey DR16Q. We investigate the properties of the Mg ii absorption lines with W _r > 0.15 Å around
Zhi-Fu Chen +7 more
doaj +3 more sources
The impact of galactic feedback on the circumgalactic medium [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 17 pages, 12 figures, accepted to ...
Suresh, Joshua +7 more
openaire +9 more sources
The low-redshift circumgalactic medium in
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT We examine the properties of the low-redshift circumgalactic medium (CGM) around star-forming and quenched galaxies in the simba cosmological hydrodynamic simulations, focusing on comparing H i and metal line absorption to observations from the Cosmic Origins Spectrograph (COS)-Halos and COS-Dwarfs surveys. Halo baryon fractions
Sarah Appleby +4 more
openaire +5 more sources
Turbulence in the intragroup and circumgalactic medium [PDF]
Astronomy & Astrophysics, 2021 Context. In massive objects, such as galaxy clusters, the turbulent velocity dispersion, σturb, is tightly correlated to both the object mass, M, and the thermal energy. Aims. Here, we investigate whether these scaling laws extend to lower-mass objects in dark-matter filaments. Methods.
Schmidt, W., Schmidt, J. P., Grete, P.
openaire +3 more sources