Results 1 to 10 of about 431,836 (261)
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
And the winner is: galaxy mass
, 2011 The environment is known to affect the formation and evolution of galaxies considerably best visible through the well-known morphology-density relationship.
A Dressler +15 more
core +1 more source
Observational Evidence for an Age Dependence of Halo Bias
, 2006 We study the dependence of the cross-correlation between galaxies and galaxy groups on group properties. Confirming previous results, we find that the correlation strength is stronger for more massive groups, in good agreement with the expected mass ...
Frank C. van den Bosch +5 more
core +2 more sources
Assessing the state of galaxy formation [PDF]
arXiv, 2000 We present the results of a survey of nearby, quiescent, non-peculiar, extremely isolated galaxies to search for the gaseous remnants of galaxy formation. Such remnants are predicted to persist around galaxies into the present day by galaxy formation models. We find low-mass HI companions around 7 of 34 galaxies surveyed. In addition we find 5 galaxies
arxiv
Star Formation Histories and Stellar Mass Growth out to z>1 [PDF]
arXiv, 2009 The deepest multi-wavelength surveys now provide measurements of star formation in galaxies out to z>1, and allow to reconstruct its history for large parts of the galaxy population. I review recent studies, which have consistently revealed a picture where galaxy star formation rates and their evolution are primarily determined by galaxy mass.
arxiv
The First Quenched Galaxies: When and How?
The Astrophysical Journal LettersMany quiescent galaxies discovered in the early Universe by JWST raise fundamental questions on when and how these galaxies became and stayed quenched. Making use of the latest version of the semianalytic model GAEA that provides good agreement with the ...
Lizhi Xie +13 more
doaj +1 more source
A possible formation scenario for dwarf spheroidal galaxies - III. Adding star formation histories to the fiducial model [PDF]
, 2017 Dwarf spheroidal galaxies are regarded as the basic building blocks in the formation of larger galaxies and are believed to be the most dark matter dominated systems known in the Universe. There are several models that attempt to explain their formation and evolution, but they have problems to model the formation of isolated dwarf spheroidal galaxies ...
arxiv +1 more source
On the Origin of the Variety of Velocity Dispersion Profiles of Galaxies
The Astrophysical JournalObserved and simulated galaxies exhibit a significant variation in their velocity dispersion profiles. We examine the inner and outer slopes of stellar velocity dispersion profiles using integral field spectroscopy data from two surveys, SAMI (for z < 0 ...
San Han +10 more
doaj +1 more source
The Collapse and Formation of Galaxies [PDF]
Symposium - International Astronomical Union, 1975 The ultimate aim of studies of the dynamics of stellar systems is to gain an understanding of why they have the structures that are observed, how they might have formed, and how they might evolve with time. In the case of galaxies, unlike smaller astronomical systems such as stars and star clusters, the problem of understanding their present structure ...
openaire +2 more sources
Aspects of Galaxy Formation [PDF]
arXiv, 2001 I describe some of the current challenges in galaxy formation theory with applications to formation of disks and of spheroids. Forthcoming deep surveys of galaxies with Keck and VLT will provide high quality spectra of $\sim 10^5$ galaxies that will probe stellar populations and star formation rates at redshift unity.
arxiv