Results 101 to 110 of about 1,710 (209)

Exploring Lenticular Galaxy Formation in Field Environments Using NewHorizon: Evidence for Counterrotating Gas Accretion as a Formation Channel

open access: yesThe Astrophysical Journal
The formation pathways of lenticular galaxies (S0s) in field environments remain a matter of debate. We utilize the cosmological hydrodynamic simulation, NewHorizon , to investigate the issue. We select two massive star formation quenched S0s as our main
Seongbong Han   +11 more
doaj   +1 more source

Quenching of satellite galaxies of Milky Way analogues: reconciling theory and observations

open access: hybrid, 2022
Andreea S. Font   +4 more
openalex   +1 more source

The Structure and Formation Histories of Low-mass Quiescent Galaxies in the A2744 Cluster Environment

open access: yesThe Astrophysical Journal
Low-mass quiescent galaxies are thought to predominantly reside in overdense regions, as environmental effects are often invoked to explain their shutdown of star formation. These longer-timescale quenching mechanisms—such as interactions with hot gas in
Sam E. Cutler   +23 more
doaj   +1 more source

On the Origin of Quenched but Gas-rich Regions at Kiloparsec Scales in Nearby Galaxies

open access: yesThe Astrophysical Journal
We use resolved spectroscopy from MaNGA to investigate the significance of both local and global properties of galaxies to the cessation of star formation at kpc scales.
Tao Jing, Cheng Li
doaj   +1 more source

Hedgehog: An Isolated Quiescent Dwarf Galaxy at 2.4 Mpc

open access: yesThe Astrophysical Journal Letters
It is well known that almost all isolated dwarf galaxies are actively forming stars. We report the discovery of dw1322m2053 (nicknamed Hedgehog), an isolated quiescent dwarf galaxy at a distance of 2.40 ± 0.15 Mpc with a stellar mass of M _⋆ ≈ 10 ^5.8 M ...
Jiaxuan Li   +3 more
doaj   +1 more source

The Dependence of Dark Matter Halo Properties on the Morphology of Their Central Galaxies from Weak Lensing

open access: yesThe Astrophysical Journal
Xu & Jing reported a monotonic relationship between the host halo mass M _h and the morphology of massive central galaxies, characterized by the Sérsic index n , at fixed stellar mass, suggesting that morphology could serve as a good secondary proxy for ...
Zhenjie Liu   +4 more
doaj   +1 more source

The Importance of Gas Starvation in Driving Satellite Quenching in Galaxy Groups at z ~ 0.8

open access: yesThe Astrophysical Journal
We present results from a Keck/DEIMOS survey to study satellite quenching in group environments at z  ~ 0.8 within the Extended Groth Strip (EGS). We target 11 groups in the EGS with extended X-ray emission. We obtain high-quality spectroscopic redshifts
Devontae C. Baxter   +3 more
doaj   +1 more source

A massive quiescent galaxy at redshift 4.658. [PDF]

open access: yesNature, 2023
Carnall AC   +12 more
europepmc   +1 more source

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