Results 31 to 40 of about 7,925 (170)

“E+A” Galaxies: Environment and Evolution [PDF]

open access: yesSymposium - International Astronomical Union, 1999
One important approach to the study of galaxy evolution is to identify those galaxies whose spectral and/or morphological characteristics suggest that they are in transition. For example, “E+A” galaxies, which have strong Balmer absorption lines and no significant [OII] emission, are generally interpreted as post-starburst galaxies in which the star ...
openaire   +3 more sources

Dwarfs in Void Environments (DIVE): The Stellar Kinematics of Void Dwarf Galaxies Using the Keck Cosmic Web Imager

open access: yesThe Astrophysical Journal, 2023
Dwarf galaxies located in extremely underdense cosmic voids are excellent test beds for disentangling the effects of large-scale environments on galaxy formation and evolution. We present the first results of the Dwarfs in Void Environments Survey, which
Mithi A. C. de los Reyes   +5 more
doaj   +1 more source

Measures of galaxy environment - I. What is ‘environment’?

open access: yes, 2011
The influence of a galaxy's environment on its evolution has been studied and compared extensively in the literature, although differing techniques are often used to define environment. Most methods fall into two broad groups: those that use nearest neighbours to probe the underlying density field and those that use fixed apertures.
Muldrew, Stuart I.   +21 more
openaire   +4 more sources

The environment of HII galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1995
7 pages, uuencoded, compressed, postscript file. (three figures included).
Telles, Eduardo, Terlevich, Roberto
openaire   +2 more sources

Inside-out versus Outside-in Quenching of MaNGA Galaxies: Dependence on Stellar Mass and Environment

open access: yesThe Astrophysical Journal
Galaxy quenching, the cessation of star formation, can proceed in spatially distinct ways, commonly described as inside-out or outside-in. However, the inferred quenching pattern depends strongly on how quenched or quenching regions are defined ...
Zi-Hua Ho   +8 more
doaj   +1 more source

Nature versus Nurture: Revisiting the Environmental Impact on Star Formation Activities of Galaxies

open access: yesThe Astrophysical Journal
We present a systematic study of the environmental impact on star formation activities of galaxies using a mass-complete sample of ∼170k galaxies at z < 4 from the latest COSMOS2020 catalog.
Ke Shi   +3 more
doaj   +1 more source

Insights into Galaxy Morphology and Star Formation: Unveiling Filamentary Structures around an Extreme Overdensity at z ∼ 1.5 Traced by [O ii] Emitters

open access: yesThe Astrophysical Journal Letters
We explore the morphological features and star formation activities of [O ii ] emitters in the COSMOS UltraDeep field at z ∼ 1.5 using JWST NIRCam data from the COSMOS-Web survey and Subaru Hyper Suprime-Cam.
Ronaldo Laishram   +5 more
doaj   +1 more source

Low-mass Quiescent Galaxies Are Small in Isolated Environments: Environmental Dependence of the Mass–Size Relation of Low-mass Quiescent Galaxies

open access: yesThe Astrophysical Journal, 2023
We study the mass–size relation of quiescent galaxies across various environments, with a particular focus on its environmental dependence at the low-mass part of $\mathrm{log}({M}_{\mathrm{star}}/{M}_{\odot })\lesssim 10.0$ .
Yongmin Yoon, Jae-Woo Kim, Jongwan Ko
doaj   +1 more source

Galaxies Caught in Transition: The Role of Group Environment in Shaping the Mass–Size Relation in the Local Universe

open access: yesThe Astrophysical Journal
The stellar mass–size relation is a sensitive probe of how environment shapes galaxy structure. We analyse this relation in the local Universe for galaxies in compact groups (CGs), low-mass groups ( M _vir ≤ 10 ^13 M _⊙ ), and high-mass groups, comparing
Gissel P. Montaguth   +10 more
doaj   +1 more source

The Environments of Radio Galaxies [PDF]

open access: yesSymposium - International Astronomical Union, 1996
In the unified schemes of AGNs BL Lac objects are believed to be Fanaroff-Riley (FR) type I radio galaxies with a relativistic jet aligned to the observer's line of sight (e.g. Urry & Padovani 1995). Kollgaard et al. (1992) and Owen et al. (1995) suggest some FR II sources can also be BL Lac parents. Clearly, isotropic properties such as the galaxy
J. E. Pesce   +3 more
openaire   +1 more source

Home - About - Disclaimer - Privacy