Results 71 to 80 of about 10,586,291 (388)
The Luminosity Function of ω Centauri [PDF]
The Astronomical Journal, 1999 Deep HST-WFPC2 observations of the stellar population in the globular cluster Omega Cen (NGC 5139) have been used to measure the luminosity function of main sequence stars at the low-mass end. Two fields have been investigated, located respectively ~4.6' and ~7' away from the cluster center, or near the half-light radius of this cluster (~4.8').
openaire +3 more sources
THE LOCAL [C ii] 158 μm EMISSION LINE LUMINOSITY FUNCTION [PDF]
, 2016 We present, for the first time, the local [C ii] 158 μm emission line luminosity function measured using a sample of more than 500 galaxies from the Revised Bright Galaxy Sample. [C ii] luminosities are measured from the Herschel PACS observations of the
S. Hemmati +6 more
semanticscholar +1 more source
Modeling the Near-Infrared Luminosity Functions of Young Stellar Clusters [PDF]
, 1999 We present the results of numerical experiments designed to evaluate the usefulness of near-infrared luminosity functions for constraining the Initial Mass Function (IMF) of young stellar populations.
August A. Muench +16 more
core +3 more sources
The galaxy UV luminosity function at z≃ 2–4; new results on faint-end slope and the evolution of luminosity density [PDF]
, 2015 We present a new, robust measurement of the evolving rest-frame ultraviolet (UV) galaxy luminosity function (LF) over the key redshift range from z ≃ 2 to z ≃ 4.
S. Parsa +3 more
semanticscholar +1 more source
The overdensities of galaxy environments as a function of luminosity and color [PDF]
, 2002 We study the mean environments of galaxies in the Sloan Digital Sky Survey as a function of rest-frame luminosity and color. Overdensities in galaxy number are estimated in $8 h^{-1} \mathrm{Mpc}$ and $1 h^{-1} \mathrm{Mpc}$ spheres centered on $125,000$
Daniel J. Eisenstein +16 more
core +2 more sources
General Physical Properties of Gamma-Ray-emitting Radio Galaxies
The Astrophysical Journal Supplement Series, 2023 We study the radio galaxies with known redshifts detected by the Fermi satellite after 10 yr of data (4FGL-DR2). We use a one-zone leptonic model to fit the quasi-simultaneous multiwavelength data of these radio galaxies and study the distributions of ...
Yongyun Chen +6 more
doaj +1 more source
Estimating galaxy luminosity functions. [PDF]
The Astronomical Journal, 1997 29 pages, uses AASTeX 4.0 macros. Includes 6 tables and 8 Postscript figures.
openaire +4 more sources
Galaxy Luminosity Function in Groups [PDF]
The Astrophysical Journal, 1998 Accepted for publication in ApJ, 5 pages including 3 ...
Carlos Valotto +2 more
openaire +3 more sources
Constraining the AGN Luminosity Function from JWST with the X-Ray Background
The Astrophysical Journal Letters, 2023 We predict the X-ray background (XRB) expected from the population of quasars detected by the James Webb Space Telescope spectroscopic surveys over the redshift range z ∼ 4–7.
Hamsa Padmanabhan, Abraham Loeb
doaj +1 more source
The Planetary Nebula Luminosity Function in the Era of Precision Cosmology
Frontiers in Astronomy and Space Sciences, 2022 One of the great surprises of the late 1980s was the discovery that the [O III] λ5007 planetary nebula luminosity function (PNLF) could be used as a precision extragalactic standard candle.
Robin Ciardullo, Robin Ciardullo
doaj +1 more source