Results 101 to 110 of about 688,273 (301)

The environmental dependence of the red galaxy sequence

, 2009
The dependence of the sequence of red galaxies (RS) with the environment is investigated using field, group, and cluster galaxies drawn from the SDSS.
Abazajian, Adelman-McCarthy, Andreon, Baldry, Balogh, Bell, Bell, Bernardi, Blanton, Blanton, Blanton, Bower, Bruzual, Cassata, Coenda, De Lucia, De Lucia, Díaz, Faber, Gilbank, Haines, Hernán Muriel, Hogg, Héctor J. Martínez, Janz, Kaviraj, Kodama, Koyama, Krick, Lu, López-Cruz, Martínez, Martínez, Martínez, McIntosh, Mei, Menci, Merchán, Merchán, Pimbblet, Pimbblet, Popesso, Schlegel, Schmidt, Skelton, Springel, Steidel, Stott, Stott, Strateva, Strauss, Tanaka, Valeria Coenda, Van Dokkum, Visvanathan, Wake   +55 more
core   +1 more source

The spectral characteristics of the 2dFGRS-NVSS galaxies [PDF]

, 2000
We have analysed the 2dF spectra of a sample of galaxies common to the 2dF galaxy redshift survey (2dFGRS, Colless 1999) and the NRAO VLA sky survey (NVSS, Condon et al. 1998). Our sample comprises 88 galaxies selected by Sadler et al.
C. A. Jackson, Colless, D. M. Londish, Kewley   +3 more
core   +3 more sources

A New Dynamical Parameter for the Study of Sticky Orbits in a 3D Galactic Model

Open Astronomy, 2011
A 3D dynamical model is used to study the motion in the central parts of an elliptical galaxy, hosting a massive and dense nucleus. Our aim is to investigate the regular or chaotic character of the motion, with emphasis in the different chaotic ...
Zotos Euaggelos E.
doaj   +1 more source

The clustering of galaxies in the sdss-iii baryon oscillation spectroscopic survey: Baryon acoustic oscillations in the data release 9 spectroscopic galaxy sample [PDF]

, 2012
We present a one per cent measurement of the cosmic distance scale from the detections of the baryon acoustic oscillations in the clustering of galaxies from the Baryon Oscillation Spectroscopic Survey (BOSS), which is part of the Sloan Digital Sky ...
L. Anderson, E. Aubourg, S. Bailey, F. Beutler, V. Bhardwaj, M. Blanton, A. Bolton, J. Brinkmann, J. Brownstein, A. Burden, C. Chuang, A. Cuesta, K. Dawson, D. Eisenstein, S. Escoffier, J. Gunn, Hong Guo, S. Ho, K. Honscheid, C. Howlett, D. Kirkby, R. Lupton, M. Manera, C. Maraston, C. McBride, O. Mena, F. Montesano, R. Nichol, S. E. Nuza, M. Olmstead, N. Padmanabhan, N. Palanque-Delabrouille, J. Parejko, W. Percival, P. Petitjean, F. Prada, A. Price-Whelan, B. Reid, N. Roe, A. Ross, N. Ross, C. Sabiu, S. Saito, L. Samushia, A. Sánchez, D. Schlegel, D. Schneider, C. Scóccola, H. Seo, R. Skibba, M. Strauss, M. Swanson, D. Thomas, J. Tinker, R. Tojeiro, M. V. Magaña, L. Verde, D. Wake, B. Weaver, D. Weinberg, M. White, Xiaoying Xu, C. Yéche, I. Zehavi, Gong-Bo Zhao   +64 more
semanticscholar   +1 more source

Equivalent width Measurements in Optical Spectra of Galaxies in Local Clusters: Hints On the Star Formation History in Clusters

Open Astronomy, 2011
Equivalent widths of spectral lines in the optical spectra of galaxies are commonly used to characterize their stellar populations and to get some insight on their evolution.
Fritz Jacopo, Poggianti Bianca M., Cava Antonio, Moretti Alessia   +3 more
doaj   +1 more source

HIGH-REDSHIFT GALAXIES IN THE HUBBLE DEEP FIELD : COLOUR SELECTION AND STAR FORMATION HISTORY TO Z 4 [PDF]

, 1996
The Lyman decrement associated with the cumulative effect of H I in QSO absorption systems along the line of sight provides a distinctive feature for identifying galaxies at z ≳ 2.5.
P. Madau, H. Ferguson, M. Dickinson, M. Giavalisco, C. Steidel, A. Fruchter   +5 more
semanticscholar   +1 more source

Predictive modeling of Super El Niño through integrated local and global climate signals

Scientific Reports
Recent surges in extreme weather events underscore the critical need for advanced climate prediction models. Super El Niño (SE) events, characterized by unprecedented climatic and economic impacts, have intensified global concerns.
Chae-Hyun Yoon, Jubin Park, Myung-Ki Cheoun   +2 more
doaj   +1 more source

The age dependence of the size-stellar mass relation and some implications

, 2009
We use a sample of about 48,000 SDSS early-type galaxies to show that older galaxies have smaller half-light radii re and larger velocity dispersions sigma than younger ones of the same stellar mass Mstar.
Barnes, Bernardi, Bernardi, Blanton, Bournaud, Bower, Boylan-Kolchin, Bundy, Burkert, Cattaneo, Cimatti, Ciotti, D'Onofrio, De Lucia, Dekel, Djorgovski, Eggen, Fall, Fan, Forbes, Francesco Shankar, Gallazzi, Gonzalez, Governato, Graham, Granato, Haiman, Hopkins, Hyde, Hyde, Jorgensen, Khochfar, Koester, Kormendy, Mariangela Bernardi, Miller, Naab, Navarro, Navarro, Oñorbe, Oñorbe, Pipino, Renzini, Robertson, Saracco, Shankar, Shankar, Shen, Toomre, Trujillo, van Dokkum, Wake, White   +52 more
core   +1 more source

Are galaxies shy?

Astrophysics and Space Science, 2002
Until 1996, there was little evidence that most galaxies were ``shy'', i.e. that they would hide their stars behind a veil of dust and turn red when forming stars, radiating the bulk of their luminosity in the infrared (IR) at a given epoch of their history.
openaire   +2 more sources

A Comprehensive Analysis on the Nature of the Spiral Arms in NGC 3686, NGC 4321, and NGC 2403

Galaxies
In theoretical investigations, various mechanisms have been put forward to explain the emergence of spiral patterns in galaxies. One of the few ways to find out the nature of spirals in a particular galaxy is to consider the so-called corotation radius ...
Valeria Kostiuk, Alexander Marchuk, Alexander Gusev, Ilia V. Chugunov   +3 more
doaj   +1 more source