Results 11 to 20 of about 241,163 (335)

A Left and Right Truncated Schechter Luminosity Function for Quasars

Galaxies, 2017
The luminosity function for quasars (QSOs) is usually fitted by a Schechter function. The dependence of the number of quasars on the redshift, both in the low and high luminosity regions, requires the inclusion of a lower and upper boundary in the ...
Lorenzo Zaninetti
doaj   +4 more sources

Luminosity function of the field galaxies [PDF]

Astrophysics, 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. The logarithmical luminosity function (LLF) of field galaxies depending on morphological type is constructed.
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
openaire   +4 more sources

Luminosity Function of the Perigalactocentric Region [PDF]

The Astrophysical Journal, 1996
25 pages. Tarred, gzipped and uuencoded. Includes LaTex source file, Figures 3 to 9 and 5 Tables. Figures 1 and 2 are available at ftp://bessel.mps.ohio-state.edu/pub/vijay .
Vijay K. Narayanan, Andrew Gould, Andrew Gould, Darren L. DePoy   +3 more
openaire   +6 more sources

The Nearby Optical Galaxy Sample: The Local Galaxy Luminosity Function [PDF]

, 1999
In this paper we derive the galaxy luminosity function from the Nearby Optical Galaxy (NOG) sample, which is a nearly complete, magnitude-limited ...
C. Marinoni, Pierluigi Monaco, G. Giuricin, B. Costantini   +3 more
openalex   +5 more sources

The subdwarf luminosity function [PDF]

Monthly Notices of the Royal Astronomical Society, 2003
Using data from the Sloan Digital Sky Survey Early Data Release and SuperCOSMOS Sky Survey scans of POSS-I plates we identify a sample of 2600 subdwarfs using reduced proper motion methods and strict selection criteria. This forms one of the largest and most reliable samples of candidate subdwarfs known, and enables us to determine accurate luminosity ...
Andrew Digby, I. Neill Reid, Nigel Hambly, J. A. Cooke, Russell D. Cannon   +4 more
openaire   +4 more sources

Luminosity function of clusters of galaxies [PDF]

Astronomy & Astrophysics, 2001
15 pages, 14 figures, 4 tables; uses subfigure.sty; accepted for publication in Astronomy and ...
PAOLILLO, MAURIZIO, S. ANDREON, LONGO, GIUSEPPE, E. PUDDU, R. R. GAL, R. SCARAMELLA, S. G. DJORGOVSKI, R. DE CARVALHO   +7 more
openaire   +7 more sources

Correlation function of the luminosity distances [PDF]

Journal of Cosmology and Astroparticle Physics, 2017
We present the correlation function of the luminosity distances in a flat $ $CDM universe. Decomposing the luminosity distance fluctuation into the velocity, the gravitational potential, and the lensing contributions, we study their individual contributions to the correlation function. The lensing contribution is important at large redshift ($z\gtrsim
Biern, Sang Gyu, Yoo, Jaiyul
openaire   +4 more sources

The Hα Luminosity Function of Galaxies at z ∼ 4.5

The Astrophysical Journal, 2023
We present the H α luminosity function (LF) derived from a large sample of Lyman break galaxies at z ∼ 4.5 over the GOODS-South and North fields.
Victoria Bollo, Valentino González, Mauro Stefanon, Pascal A. Oesch, Rychard J. Bouwens, Renske Smit, Garth D. Illingworth, Ivo Labbé   +7 more
doaj   +1 more source

Galactic Model Parameters and Spatial Density of Cataclysmic Variables in the Gaia Era: New Constraints on Population Models

The Astronomical Journal, 2023
The spatial distribution, Galactic model parameters, and luminosity function of cataclysmic variables (CVs) are established using reestimated trigonometric parallaxes from Gaia DR3.
Remziye Canbay, Selçuk Bilir, Aykut Özdönmez, Tansel Ak   +3 more
doaj   +1 more source

Unpacking Merger Jets: A Bayesian Analysis of GW170817, GW190425 and Electromagnetic Observations of Short Gamma-Ray Bursts

The Astrophysical Journal, 2023
We present a novel fully Bayesian analysis to constrain short gamma-ray burst (sGRB) jet structures associated with cocoon, wide-angle, and simple top-hat jet models, as well as the binary neutron star (BNS) merger rate.
Fergus Hayes, Ik Siong Heng, Gavin Lamb, En-Tzu Lin, John Veitch, Michael J. Williams   +5 more
doaj   +1 more source