Results 71 to 80 of about 314,301 (152)

The luminosity function of field galaxies

, 2011
Schmidt's method for construction of luminosity function of galaxies is generalized by taking into account the dependence of density of galaxies from the distance in the near Universe.
A Dressler, A Dressler, A Jr, A Sandage, A Sandage, A. P. Mahtessian, AI Zabludoff, ALB Ribeiro, AP Mahtessian, AP Mahtessian, B Binggeli, B Garilli, B Garilli, BC Bromley, BM Garilli, C Marinoni, CA Valotto, CNA Willmer, D Lynden-Bell, DH Gudehus, E Gaidos, G Efstathiou, H Jerjen, H Lin, H Muriel, HC Ferguson, J Choloniewski, J Huchra, J Loveday, JE Felten, JF Nicol, LF Barrientos, M Paolillo, M Ramella, M Schmidt, MA Arakelyan, MJ Cuesta-Bolao, MM Colless, N Trentham, N Trentham, O Lopez-Cruz, O Lopez-Cruz, P Schechter, PM Lugger, RO Marzke, S Andreon, S Andreon, S Rayzy, SE Zepf, SL Lumsden, SP Driver, T Goto, VYu Terebizh, WR Oegerle, WR Oegerle   +54 more
core   +1 more source

The Optical Variability of the BL Lac AO 0235+164

Galaxies, 2016
In this work, we present optical R band observations of AO 0235+164 carried out during the period of November 2006 to December 2012 using the Ap6E CCD camera attached to the primary focus of the 70 cm meniscus telescope at Abastumani Observatory, Georgia.
Junhui Fan, Omar Kurtanidze, Yi Liu, Xiang Liu, Gotthard M. Richter, Maria G. Nikolashvili, Sophia O. Kurtanidze, Revaz Chanishvili, Hongtao Wang, Mahito Sasada, Aiying Zhou, Chao Lin, Yuhai Yuan   +12 more
doaj   +1 more source

Effect of bars on the galaxy properties

, 2016
Aims: With the aim of assessing the effects of bars on disc galaxy properties, we present an analysis of different characteristics of spiral galaxies with strong, weak and without bars.
Alonso, Sol, Coldwell, Georgina, Vera, Matias   +2 more
core   +1 more source

Theoretical Re-evaluations of Scaling Relations between SMBHs and Their Host Galaxies—1. Effect of Seed BH Mass

Frontiers in Astronomy and Space Sciences, 2017
We use a semi-analytic model of galaxy formation and investigate how the mass of a seed black hole affect the scaling relation between black hole mass and bulge mass at z ~ 0.
Hikari Shirakata, Toshihiro Kawaguchi, Takashi Okamoto, Ryu Makiya, Ryu Makiya, Tomoaki Ishiyama, Yoshiki Matsuoka, Masahiro Nagashima, Motohiro Enoki, Taira Oogi, Masakazu A. R. Kobayashi   +10 more
doaj   +1 more source

Local Analogs for High-redshift Galaxies: Resembling the Physical Conditions of the Interstellar Medium in High-redshift Galaxies

, 2016
We present a sample of local analogs for high-redshift galaxies selected in the Sloan Digital Sky Survey (SDSS). The physical conditions of the interstellar medium (ISM) in these local analogs resemble those in high-redshift galaxies.
Bian, Fuyan, Dopita, Michael, Juneau, Stephanie, Kewley, Lisa   +3 more
core   +1 more source

Hot Stars, Young Stellar Populations and Dust with Swift/UVOT

Universe
In this review, we highlight the contributions made by the Swift/UVOT instrument to the understanding of the ultraviolet (UV) attenuation and extinction properties of interstellar dust and provide insight into hot stars and young stellar populations. The
Michael H. Siegel, Caryl Gronwall
doaj   +1 more source

Properties of bars in the local universe

, 2008
We studied the fraction and properties of bars in a sample of about 3000 galaxies extracted from SDSS-DR5. This represents a volume limited sample with galaxies located between redshift 0.01-20, and inclination i < 60.
Aguerri, J. A. L., Corsini, E. M., Méndez-Abreu, J.   +2 more
core  

A Stellar Mass Threshold for Quenching of Field Galaxies

, 2012
We demonstrate that dwarf galaxies (10^7 < M_stellar < 10^9 Msun) with no active star formation are extremely rare (
Aihara, Balogh, Behroozi, Bell, Blanton, Blanton, Blanton, Blanton, Blanton, Blanton, Brown, Bryan, Gabor, Geha, Giovanelli, Grcevich, J. L. Tinker, Karachentseva, Kewley, Lisker, Ludlow, M. Geha, M. R. Blanton, Peng, Peng, R. Yan, Salim, Tinker, Walsh, Wang, Weisz, Willick, Woo, Wuyts, Yan, Yan, Yang, Zehavi   +37 more
core   +1 more source

Investigation of the Stellar Population of Several Polar Ring Galaxies

Galaxies, 2016
We present results of our investigation of two multi-spin galaxies which were taken from the catalog of polar ring galaxies. All of them possess nucleus-like knots.
Liliya Shalyapina, Gulnara Karataeva, Olga Merkulova, Valeriya Yakovleva, Nina Yablokova   +4 more
doaj   +1 more source

Compact E+A Galaxies as a Progenitor of Massive Compact Quiescent Galaxies at 0.2

, 2016
We search the Sloan Digital Sky Survey and the Baryon Oscillation Sky Survey to identify ~5500 massive compact quiescent galaxy candidates at 0 ...
Chillingarian, Igor, Damjanov, Ivana, Geller, Margaret J., Hochmuth, Nicholas Baeza, Hwang, Ho Seong, Salmi, Fadia, Sohn, Jubee, Zahid, H. Jabran   +7 more
core   +1 more source