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Upper Limits on the Mass of Cool Gas in the Circumgalactic Medium of Dwarf Galaxies [PDF]
The Astrophysical Journal LettersWe use H i absorption measurements to constrain the amount of cool (≈10 ^4 K), photoionized gas in the circumgalactic medium (CGM) of dwarf galaxies with M _* = 10 ^6.5−9.5 M _⊙ in the nearby Universe ( z
Yakov Faerman +2 more
doaj +2 more sources
On the Origin of the 107 K Hot Emitting Gas in the Circumgalactic Medium of the Milky Way [PDF]
The Astrophysical JournalThe presence of the ≈10 ^6 K gas in the circumgalactic medium of the Milky Way (MW) has been well established. However, the location and the origin of the newly discovered hot gas at “supervirial (SV)” temperatures of ≈10 ^7 K have been puzzling.
Mukesh Singh Bisht +2 more
doaj +2 more sources
The Astrophysical JournalWe report the small-scale spatial variation in cool ( T ∼ 10 ^4 K) Mg ii absorption detected in the circumgalactic medium (CGM) of a star-forming galaxy at z ≈ 0.8.
Ahmed Shaban +8 more
doaj +2 more sources
CRexit: How different cosmic ray transport modes affect thermal instability in the circumgalactic medium [PDF]
Astronomy & AstrophysicsThe circumgalactic medium (CGM) plays a critical role in galaxy evolution, influencing gas flows, feedback processes, and galactic dynamics. Observations have shown a substantial cold gas reservoir in the CGM, but the mechanisms driving its formation and
Matthias Weber +3 more
openalex +2 more sources
Detection of Anisotropies in the Circumgalactic Medium of Disk Galaxies: Supermassive Black Hole Activity or Star Formation-driven Outflows? [PDF]
Astrophysical JournalGamma and X-ray observatories have revealed spectacular structures in the emission of the tenuous hot gas surrounding the Milky Way (MW), known as the Fermi and extended ROentgen Survey with an Imaging Telescope Array (eROSITA) bubbles.
Andrea Sacchi +2 more
semanticscholar +4 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, the Project AMIGA team
openalex +2 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 +3 more sources
Properties of the simulated circumgalactic medium [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT The circumgalactic medium (CGM) is closely linked to galaxy formation and evolution, but difficult to characterize observationally and typically poorly resolved in cosmological simulations. We use spherically symmetric, idealized, high-resolution simulations of the CGM in $10^{12}$ and $10^{11}\, \mathrm{M}_\odot$ dark matter ...
Cassandra Lochhaas +4 more
openaire +2 more sources
HUBS: a dedicated hot circumgalactic medium explorer [PDF]
Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray, 2020 The Hot Universe Baryon Surveyor (HUBS) mission is proposed to study "missing" baryons in the universe. Unlike dark matter, baryonic matter is made of elements in the periodic table, and can be directly observed through the electromagnetic signals that it produces.
Wei Cui +78 more
openaire +2 more sources
Atacama Large Aperture Submillimeter Telescope (AtLAST) science: The hidden circumgalactic medium. [PDF]
Open Res EurOur knowledge of galaxy formation and evolution has incredibly progressed through multi-wavelength observational constraints of the interstellar medium (ISM) of galaxies at all cosmic epochs.
Lee M +31 more
europepmc +3 more sources