Results 1 to 10 of about 241,163 (335)
THE PROTOSTELLAR LUMINOSITY FUNCTION [PDF]
The Astrophysical Journal, 2011 The protostellar luminosity function (PLF) is the present-day luminosity function of the protostars in a region of star formation. It is determined using the protostellar mass function (PMF) in combination with a stellar evolutionary model that provides the luminosity as a function of instantaneous and final stellar mass. As in McKee & Offner (2010)
Christopher F. McKee +1 more
openaire +4 more sources
The Luminosity Function of M3 [PDF]
The Astrophysical Journal, 1999 We present a high precision, large sample luminosity function (LF) for the Galactic globular cluster M3. With a combination of ground based and Hubble Space Telescope data we cover the entire radial extent of the cluster. The observed LF is well fit by canonical standard stellar models from the red giant branch (RGB) tip to below the main sequence ...
Oscar Straniero +8 more
openaire +4 more sources
The white dwarf luminosity function [PDF]
New Astronomy Reviews, 2016 White dwarfs are the final remnants of low- and intermediate-mass stars. Their evolution is essentially a cooling process that lasts for $\sim 10$ Gyr. Their observed properties provide information about the history of the Galaxy, its dark matter content and a host of other interesting astrophysical problems.
Terry D Oswalt
exaly +4 more sources
Characterizing the luminosity components of luminous infrared galaxies in multi-wavelength from the X-ray to the far-infrared [PDF]
Scientific ReportsWe characterize luminosity components of Ultra/Luminous Infrared Galaxies (U/LIRGs) in multi-wavelength from the X-ray to far-infrared. A set of 63 AGN U/LIRGs was selected where these galaxies are powered by a central active galactic nucleus (AGN ...
Abdallah A. M. Ali +3 more
doaj +2 more sources
The CNOC2 Field Galaxy Luminosity Function. I. A Description of Luminosity Function Evolution [PDF]
The Astrophysical Journal, 1999 We examine the evolution of the galaxy luminosity function (LF) using a sample of over 2000 galaxies, with 0.12 < z < 0.55 and 17.0 < Rc < 21.5, drawn from the Canadian Network for Observational Cosmology Field Galaxy Redshift Survey (CNOC2), at present the largest such sample at intermediate redshifts. We use UBVRcIc photometry to classify
H. Lin +7 more
openalex +4 more sources
The Form of the Luminosity Function
The Astrophysical Journal, 1924 Frederick H. Seares
openalex +3 more sources
The Luminosity Function of Galaxies in Some Nearby Clusters
UHD Journal of Science and Technology, 2021 In the present work, the galaxy luminosity function (LF) has been studied for a sample of seven clusters in the redshift range (0.0 ≲ z ≲ 0.1), within Abell radius (1.5 h−1 Mpc), in the five SDSS passbands ugriz.
Mariwan Ahmed Rasheed +1 more
doaj +1 more source
On the mass distribution of stars in the solar neighborhood [PDF]
Serbian Astronomical Journal, 2006 The present authors analyze samples consisting of Hipparcos stars. Based on the corresponding HR diagrams they estimate masses of Main-Sequence stars from their visual magnitudes. They find that already beyond the heliocentric radius of 10 pc the effects
Ninković S., Trajkovska V.
doaj +1 more source
Luminosity function of GRBs [PDF]
Astronomy & Astrophysics, 2001 We attempt to constrain the luminosity function of Gamma Ray Bursts (GRBs) from the observed number count--flux relation and the afterglow redshift data. We assume three classes of luminosity functions for our analysis: (a) Log-normal distribution, (b) Schechter distribution, and (c) Scale-free distribution. We assume several models of the evolution of
Shiv K. Sethi, S. G. Bhargavi
openaire +4 more sources
Quasar Luminosity Function at z = 7
The Astrophysical Journal Letters, 2023 We present the quasar luminosity function (LF) at z = 7, measured with 35 spectroscopically confirmed quasars at 6.55 < z < 7.15. The sample of 22 quasars from the Subaru High- z Exploration of Low-Luminosity Quasars (SHELLQs) project, combined with 13 ...
Yoshiki Matsuoka +43 more
doaj +1 more source