Results 101 to 110 of about 438,833 (359)

Incorporating Morphological Types into Semi-analytic Schemes for Galaxy Formation [PDF]

arXiv, 1995
We test the hypothesis that elliptical galaxies are formed by violent mergers in a universe with hierarchical structure formation. Within the framework of a semi-analytic scheme for galaxy formation, we predict the distribution of morphological types with redshift and compare the colours of elliptical galaxies in different environments.
arxiv  

An analytical model for galaxy metallicity: What do metallicity relations tell us about star formation and outflow? [PDF]

, 2015
We develop a simple analytical model that tracks galactic metallicities governed by star formation and feedback to gain insight from the observed galaxy stellar mass-metallicity relations over a large range of stellar masses and redshifts. The model reveals the following implications of star formation and feedback processes in galaxy formation.
arxiv   +1 more source

On the Signature of Black Holes on the Quenched Stellar Mass Function

The Astrophysical Journal
As star-forming galaxies approach or exceed a stellar mass of around 10 ^11 M _⊙ , they are increasingly likely to be quenched in a process generically called mass quenching.
Antonio J. Porras-Valverde, John C. Forbes   +1 more
doaj   +1 more source

CEERS Key Paper. V. Galaxies at 4 < z < 9 Are Bluer than They Appear–Characterizing Galaxy Stellar Populations from Rest-frame ∼1 μm Imaging

The Astrophysical Journal Letters, 2023
We present results from the Cosmic Evolution Early Release Survey on the stellar population parameters for 28 galaxies with redshifts 4 < z < 9 using imaging data from the James Webb Space Telescope (JWST) Mid-Infrared Instrument (MIRI) combined with ...
Casey Papovich, Justin W. Cole, Guang Yang, Steven L. Finkelstein, Guillermo Barro, Véronique Buat, Denis Burgarella, Pablo G. Pérez-González, Paola Santini, Lise-Marie Seillé, Lu Shen, Pablo Arrabal Haro, Micaela B. Bagley, Eric F. Bell, Laura Bisigello, Antonello Calabrò, Caitlin M. Casey, Marco Castellano, Katherine Chworowsky, Nikko J. Cleri, Luca Costantin, M. C. Cooper, Mark Dickinson, Henry C. Ferguson, Adriano Fontana, Mauro Giavalisco, Andrea Grazian, Norman A. Grogin, Nimish P. Hathi, Benne W. Holwerda, Taylor A. Hutchison, Jeyhan S. Kartaltepe, Lisa J. Kewley, Allison Kirkpatrick, Dale D. Kocevski, Anton M. Koekemoer, Rebecca L. Larson, Arianna S. Long, Ray A. Lucas, Laura Pentericci, Nor Pirzkal, Swara Ravindranath, Rachel S. Somerville, Jonathan R. Trump, Stephanie M. Urbano Stawinski, Benjamin J. Weiner, Stephen M. Wilkins, L. Y. Aaron Yung, Jorge A. Zavala   +48 more
doaj   +1 more source

The influences of the Magellanic Clouds on the Galaxy: Pole shift, warp, and star formation history

, 2012
We investigate how the Large Magellanic Cloud (LMC) influences the evolution of the Galaxy after the LMC enters into the virial radius of the dark matter halo of the Galaxy for the first time.
Bekki, Bekki, Bekki, Bekki, Bekki, Besla, Connors, Costa, Diag, Diaz, Diaz, Gardiner, Gardiner, Hunter, Kallivayalil, Keller, Kenji Bekki, Law, Levine, Li, Lin, Mastropietro, McClure-Griffiths, Metz, Momany, Murai, Navarro, Nichols, Olsen, Piatek, Quinn, Reid, Rocha-Pinto, Ruzicka, Subramaniam, Sugimoto, Tsuchiya, Vieira, Weinberg, Weinberg, Wilkinson, Yoshizawa   +41 more
core   +1 more source

A LAW FOR STAR FORMATION IN GALAXIES [PDF]

The Astrophysical Journal, 2011
We study the galactic-scale triggering of star formation. We find that the largest mass-scale not stabilized by rotation, a well defined quantity in a rotating system and with clear dynamical meaning, strongly correlates with the star formation rate in a wide range of galaxies.
openaire   +9 more sources

Usage of the term provenance in LIS literature: An Annual Review of Information Science and Technology (ARIST) paper

Journal of the Association for Information Science and Technology, EarlyView.
Abstract Provenance is the story of how something has come to be. In this paper, we provide a systematic literature review to categorize the various notions of provenance in Information Sciences. The goal of this review is to paint a broader picture of the multiple uses of provenance at play and to enhance our understanding of the importance of ...
Rhiannon Bettivia, Yi‐Yun Cheng, Michael R. Gryk   +2 more
wiley   +1 more source

The Formation of the Brightest Cluster Galaxy and Intracluster Light in Cosmological N-body Simulations with the Galaxy Replacement Technique

The Astrophysical Journal, 2023
We investigate the formation channels of the intracluster light (ICL) and the brightest cluster galaxy (BCG) in clusters at z = 0. For this, we perform multi-resolution cosmological N -body simulations using the “galaxy replacement technique.” We study ...
Kyungwon Chun, Jihye Shin, Rory Smith, Jongwan Ko, Jaewon Yoo   +4 more
doaj   +1 more source

Redshift‐Agnostic Machine Learning Classification: Unveiling Peak Performance in Galaxy, Star, and Quasar Classification (Using SDSS DR17)

Astronomische Nachrichten, EarlyView.
ABSTRACT Classification of galaxies, stars, and quasars using spectral data is fundamental to astronomy, but often relies heavily on redshift. This study evaluates the performance of 10 machine learning algorithms on SDSS data to classify these objects, with a particular focus on scenarios where redshift information is unavailable.
Debashis Chatterjee, Prithwish Ghosh
wiley   +1 more source

PAC. V. The Roles of Mass and Environment in the Quenching of Galaxies

The Astrophysical Journal
The roles that mass and environment play in galaxy quenching are still under debate. Leveraging the Photometric objects Around Cosmic webs method, we analyze the excess surface distribution ${\bar{n}}_{2}{w}_{{\rm{p}}}({r}_{{\rm{p}}})$ of photometric ...
Yun Zheng, Kun Xu, Y. P. Jing, Donghai Zhao, Hongyu Gao, Xiaolin Luo, Jiaxin Han, Yu Yu, Ming Li   +8 more
doaj   +1 more source