Results 111 to 120 of about 688,273 (301)

Comparing galaxy populations in compact and loose groups of galaxies

, 2012
We perform a comparison of the properties of galaxies in compact groups, loose groups and in the field to deepen our understanding of the physical mechanisms acting upon galaxy evolution in different environments. We select samples of galaxies in compact
Abadi, Abazajian, Adelman-McCarthy, Baldry, Balogh, Balogh, Beers, Bernardi, Bitsakis, Blanton, Blanton, Brasseur, Choloniewski, Coenda, Coenda, Colless, Cortese, Deng, Deng, Diaferio, Dressler, Díaz-Giménez, Eke, Gerke, Goto, Gunn, H. J. Martínez, H. Muriel, Hansen, Hickson, Hickson, Huchra, Iovino, Johnson, Kawata, Larson, Lee, Limber, Lynden-Bell, Maltby, Martínez, Martínez, Martínez, Martínez, Martínez, McConnachie, McConnachie, McGee, McGee, Mendel, Mendes de Oliveira, Merchán, Merchán, Moore, Moore, Nair, Oemler, Petrosian, Rasmussen, Sandage, Sandage, Sandage, Schechter, Schlegel, Schmidt, Shen, Springel, Strateva, Strauss, Taylor, Toomre, Torres-Flores, Tovmassian, Tzanavaris, V. Coenda, von der Linden, Walker, Weinmann, Weinmann, Wilman, Yang, York, Zandivarez   +82 more
core   +1 more source

Inefficient Star Formation In Extremely Metal Poor Galaxies [PDF]

, 2014
The first galaxies contain stars born out of gas with little or no metals. The lack of metals is expected to inhibit efficient gas cooling and star formation but this effect has yet to be observed in galaxies with oxygen abundance relative to hydrogen ...
Armus, Lee, Gao, Yu, Gu, Qiusheng, Helou, George, Shi, Yong, Stierwalt, Sabrina, Wang, Junzhi, Zhang, Zhi-Yu   +7 more
core   +2 more sources

266 E+A Galaxies Selected from the Sloan Digital Sky Survey Data Release 2: The Origin of E+A Galaxies

, 2005
E+A galaxies are characterized as a galaxy with strong Balmer absorption lines but without any [OII] nor H$\alpha$ emission lines. The existence of strong Balmer absorption lines indicates that E+A galaxies have experienced starburst within recent one ...
Abadi, Abazajian, Abraham, Barger, Bartholomew, Bekki, Belloni, Bennett, Blake, Blanton, Butcher, Caldwell, Caldwell, Caldwell, Carter, Castander, Chang, Couch, Couch, Dressler, Dressler, Dressler, Dressler, Fabricant, Farouki, Fisher, Fujita, Fujita, Fujita, Fujita, Galaz, Goto, Goto, Goto, Goto, Goto, Goto, Goto, Goto, Goto, Goto, Gunn, Hashimoto, Kent, Lavery, Lavery, Liu, Liu, MacLaren, Mateus, Mihos, Miller, Morris, Moss, Moss, Newberry, Norton, Oegerle, Poggianti, Poggianti, Poggianti, Postman, Quilis, Quintero, Rose, Schweizer, Schweizer, Scranton, Sharples, Shimasaku, Shioya, Shioya, Smail, Spitzer, Strateva, Tanaka, Tomotsugu Goto, Tran, Tran, Yamauchi   +79 more
core   +2 more sources

Populating a cluster of galaxies - I. Results at z=0 [PDF]

, 2000
ABSTRA C T We simulate the assembly of a massive rich cluster and the formation of its constituent galaxies in a flat, low-density universe. Our most accurate model follows the collapse, the star formation history and the orbital motion of all galaxies ...
V. Springel, S. White, G. Tormen, Guinevere Kauffmann Mpa, Harvard-CfA, Padova   +5 more
semanticscholar   +1 more source

Dwarf galaxies: Important clues to galaxy formation [PDF]

Astrophysics and Space Science, 2003
10 pages, 4 figures, Invited talk in "Galaxy Evolution III: From Simple Approaches to Self-Consistent Models" (Kiel, Germany, July 16-20, 2002) eds. G.
openaire   +3 more sources

High Redshift Quasars, Emission Lines and ‘Cloudy’

Open Astronomy, 2011
I describe some of the outstanding “big picture” questions in quasar research and how the development of the plasma simulation code Cloudy is being guided to answer them.
Ferland Gary J.
doaj   +1 more source

Separating the Spectral Counterparts in NGC 1275/Perseus Cluster in X-Rays

Astronomy
We present a model-independent method for separating the spectral counterparts of the active galactic nucleus (AGN) NGC 1275 from the surrounding emission of the Perseus cluster, as observed by Suzaku/XIS cameras.
Elena Fedorova, Lidiia Zadorozhna, Anatolii Tugay, Nadiia Pulatova, Alexander Ganz, Olexandr Gugnin   +5 more
doaj   +1 more source

Conference “Modern Stellar Astronomy 2017”

Open Astronomy, 2017
Here we give a brief overview on the eighth annual conference on Modern Stellar Astronomy held in the Ural FederalUniversity (Ekaterinbourg, Russia) in June 2017, to commemorate the 100th birthday of Prof. K. Barkhatova (1917-1990).
Malkov Oleg Yu., Rastorguev Alexey S.
doaj   +1 more source

Evolution of the Fraction of Clumpy Galaxies at 0.2 [PDF]

, 2014
Using the Hubble Space Telescope/Advanced Camera for Surveys data in the COSMOS field, we systematically searched clumpy galaxies at 0 ...
Capak, P., Ilbert, O., Kajisawa, M., Kobayashi, M. A. R., Koekemoer, A. M., Murata, K. L., Salvato, M., Scoville, N. Z., Shioya, Y., Taniguchi, Y.   +9 more
core   +5 more sources

Structure and Kinematics of Early-Type Galaxies from Integral Field Spectroscopy [PDF]

, 2016
Observations of galaxy isophotes, long-slit kinematics, and high-resolution photometry suggested a possible dichotomy between two distinct classes of elliptical galaxies. But these methods are expensive for large galaxy samples.
M. Cappellari
semanticscholar   +1 more source