Results 31 to 40 of about 5,245 (177)
THE INFLUENCE OF ENVIRONMENT ON THE CIRCUMGALACTIC MEDIUM [PDF]
The Astrophysical Journal, 2013 The effect of environment on the circumgalactic medium (CGM) is investigated through a comparison of Lya absorption line data in the Virgo Cluster and the field. This Letter uses the first systematic survey of background QSOs in and around the Virgo Cluster and large existing surveys of galaxies at low redshift. While previous studies found denser gas (
Yoon, Joo Heon, Putman, Mary
openaire +2 more sources
Formation of multiphase plasma in galactic haloes and an analogy to solar plasma
Frontiers in Astronomy and Space Sciences, 2023 Thermal instability (TI) potentially explains the origin of cold gas in the intracluster medium (ICM), which is heated sufficiently by AGN feedback. The Hα filaments seen in cluster cores provide strong motivation for TI.
Prakriti Pal Choudhury
doaj +1 more source
Role of cosmic rays in the circumgalactic medium [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 We explore the impact of cosmic rays (CRs) on cosmological adaptive-mesh refinement simulations of a forming 10^12 Msolar halo, focusing on the circumgalactic medium (CGM), and its resulting low-redshift structure and composition. In contrast to a run with star formation and energetic feedback but no CRs, the CR-inclusive runs feature a CGM ...
Salem, Munier +2 more
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Cosmic Ray Processes in Galactic Ecosystems
Galaxies, 2023 Galaxy evolution is an important topic, and our physical understanding must be complete to establish a correct picture. This includes a thorough treatment of feedback.
Ellis R. Owen +4 more
doaj +1 more source
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)
openaire +1 more source
The Mitchell Spectrograph: Studying Nearby Galaxies with the VIRUS Prototype
Advances in Astronomy, Volume 2013, Issue 1, 2013., 2013 The Mitchell Spectrograph (a.k.a. VIRUS‐P) on the 2.7 m Harlan J. Smith telescope at McDonald Observatory is currently the largest field of view (FOV) integral field unit (IFU) spectrograph in the world (1.7′ × 1.7′). It was designed as a prototype for the highly replicable VIRUS spectrograph which consists of a mosaic of IFUs spread over a 16 ...
Guillermo A. Blanc +1 more
wiley +1 more source
The Anisotropic Circumgalactic Medium of Massive Early-type Galaxies
The Astrophysical Journal, 2022 Abstract Using measurements of the [O iii], Hα, and [N ii] emission line fluxes originating in the cool (T ∼104 K) gas that populates the halos of massive early-type galaxies with stellar masses greater than 1010.4 M ⊙, we explore the recent conjecture that active galactic nucleus (AGN) activity ...
Huanian 华年 Zhang 张 +1 more
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The circumgalactic medium of massive galaxies at z~3: a test for stellar feedback, galactic outflows, and cold streams [PDF]
, 2013 We present new results on the kinematics, thermal and ionization state, and spatial distribution of metal-enriched gas in the circumgalactic medium (CGM) of massive galaxies at redshift 3, using the "Eris" suite of cosmological "zoom-in" simulations. The
Adelberger +28 more
core +1 more source
Galaxies Probing Galaxies at High Resolution: Co-Rotating Gas Associated with a Milky Way Analog at z=0.4 [PDF]
, 2015 We present results on gas flows in the halo of a Milky Way-like galaxy at z=0.413 based on high-resolution spectroscopy of a background galaxy. This is the first study of circumgalactic gas at high spectral resolution towards an extended background ...
Coil, Alison L. +7 more
core +3 more sources
The COS Absorption Survey of Baryon Harbors (CASBaH): Warm-hot Circumgalactic Gas Reservoirs Traced by Ne VIII Absorption [PDF]
, 2019 We survey the highly ionized circumgalactic media (CGM) of 29 blindly selected galaxies at 0.49 < z_(gal) < 1.44 based on high-S/N ultraviolet spectra of z > 1 QSOs and the galaxy database from the COS Absorption Survey of Baryon Harbors (CASBaH).
Bordoloi, Rongmon +15 more
core +2 more sources