Results 21 to 30 of about 12,566,242 (368)

Mass segregation trends in SDSS galaxy groups [PDF]

, 2014
It has been shown that galaxy properties depend strongly on their host environment. In order to understand the relevant physical processes driving galaxy evolution it is important to study the observed properties of galaxies in different environments ...
Evans, Fraser A., Joshi, Gandhali D., Parker, Laura C., Roberts, Ian D.   +3 more
core   +3 more sources

Quantifying the role of ram pressure stripping of galaxies within galaxy groups [PDF]

Monthly notices of the Royal Astronomical Society, 2022
It is often stated that the removal of gas by ram pressure stripping of a galaxy disk is not a common process in galaxy groups. In this study, with the aid of an observational classification of galaxies and a simple physical model, we show that this ...
Tutku Kolcu, J. Crossett, C. Bellhouse, S. McGee   +3 more
semanticscholar   +1 more source

Accretion of galaxy groups into galaxy clusters [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT We study the role of group infall in the assembly and dynamics of galaxy clusters in ΛCDM. We select 10 clusters with virial mass M200 ∼ 1014 $\rm M_\odot$ from the cosmological hydrodynamical simulation Illustris and follow their galaxies with stellar mass M⋆ ≥ 1.5 × 108 $\rm M_\odot$.
Laura V. Sales, M. G. Abadi, M. G. Abadi, José A. Benavides   +3 more
openaire   +4 more sources

Hunting for the host galaxy groups of binary black holes and the application in constraining Hubble constant [PDF]

, 2020
The discovery of gravitational-wave (GW) signals, produced by the coalescence of stellar-mass binary black holes (SBBHs), opens a new window to study the astrophysical origins and dynamical evolutions of compact binaries. In addition, these GW events can
Jiming Yu, Yu Wang, Wen Zhao, Youjun Lu
semanticscholar   +1 more source

Investigating the Dominant Environmental Quenching Process in UVCANDELS/COSMOS Groups

The Astrophysical Journal, 2023
We explore how the fraction of quenched galaxies changes in groups of galaxies with respect to the distance to the center of the group, redshift, and stellar mass to determine the dominant process of environmental quenching in 0.2 < z < 0.8 groups.
Bonnabelle Zabelle, Claudia Scarlata, Vihang Mehta, Harry I. Teplitz, Marc Rafelski, Xin Wang, Ben Sunnquist, Laura Prichard, Norman Grogin, Anton Koekemoer, Rogier Windhorst, Michael Rutkowski, Anahita Alavi, Nima Chartab, Christopher J. Conselice, Y. Sophia Dai, Eric Gawiser, Mauro Giavalisco, Pablo Arrabal Haro, Nimish Hathi, Rolf A. Jansen, Zhiyuan Ji, Ray A. Lucas, Kameswara Mantha, Bahram Mobasher, Robert W. O’Connell, Brant Robertson, Zahra Sattari, L. Y. Aaron Yung, Romeel Davé, Duilia DeMello, Mark Dickinson, Henry Ferguson, Steven L. Finkelstein, Matt Hayes, Justin Howell, Sugata Kaviraj, John W. Mackenty, Brian Siana   +38 more
doaj   +1 more source

Galaxy Populations in Groups and Clusters: Evidence for a Characteristic Stellar Mass Scale at M ∗ ∼ 109.5 M ⊙

The Astrophysical Journal, 2023
We use the DR9 of the DESI legacy imaging survey and SDSS galaxy groups to measure the conditional luminosity function (CLF) for groups with halo mass M _h ≥ 10 ^12 M _⊙ and redshift 0.01 ≤ z ≤ 0.08, down to a limiting r -band magnitude of M _r = −10 to −
Jiacheng Meng, Cheng Li, H. J. Mo, Yangyao Chen, Zhen Jiang, Lizhi Xie   +5 more
doaj   +1 more source

Bent It Like FRs: Extended Radio AGN in the COSMOS Field and Their Large-Scale Environment

Galaxies, 2021
A fascinating topic in radio astronomy is how to associate the complexity of observed radio structures with their environment in order to understand their interplay and the reason for the plethora of radio structures found in surveys. In this project, we
Eleni Vardoulaki, Franco Vazza, Eric F. Jiménez-Andrade, Ghassem Gozaliasl, Alexis Finoguenov, Denis Wittor   +5 more
doaj   +1 more source

Formation of ultra-diffuse galaxies in the field and in galaxy groups [PDF]

Monthly notices of the Royal Astronomical Society, 2018
We study ultra-diffuse galaxies (UDGs) in zoom in cosmological simulations, seeking the origin of UDGs in the field versus galaxy groups. We find that while field UDGs arise from dwarfs in a characteristic mass range by multiple episodes of supernova ...
F. Jiang, A. Dekel, J. Freundlich, A. Romanowsky, A. Dutton, A. Macciò, A. Di Cintio   +6 more
semanticscholar   +1 more source

GAMA+KiDS: Alignment of galaxies in galaxy groups and its dependence on galaxy scale [PDF]

Astronomy & Astrophysics, 2019
Intrinsic galaxy alignments are a source of bias for weak lensing measurements as well as a tool for understanding galaxy formation and evolution. In this work, we measure the alignment of shapes of satellite galaxies, in galaxy groups, with respect to ...
C. Georgiou, N. E. Chisari, M. Fortuna, H. Hoekstra, K. Kuijken, B. Joachimi, M. Vakili, Maciej Bilicki, A. Dvornik, T. Erben, B. Giblin, C. Heymans, N. Napolitano, H. Shan   +13 more
semanticscholar   +1 more source

MOND in galaxy groups: A superior sample [PDF]

Physical Review D, 2018
Intermediate-richness galaxy groups are an important test ground for MOND. First, they constitute a distinct type of galactic systems, with their own evolution histories and underlying physical processes; secondly, they probe little-chartered regions of ...
M. Milgrom
semanticscholar   +1 more source