Results 21 to 30 of about 10,586,291 (388)
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 +4 more
openaire +4 more sources
Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). V. Quasar Luminosity Function and Contribution to Cosmic Reionization at z = 6 [PDF]
Astrophysical Journal, 2018 We present new measurements of the quasar luminosity function (LF) at z ∼ 6 over an unprecedentedly wide range of the rest-frame ultraviolet luminosity M1450 from −30 to −22 mag.
Y. Matsuoka +46 more
semanticscholar +1 more source
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 +7 more
openaire +7 more sources
Evolution of the AGN UV luminosity function from redshift 7.5 [PDF]
Monthly notices of the Royal Astronomical Society, 2018 Determinations of the ultraviolet (UV) luminosity function of active galactic nuclei (AGN) at high redshifts are important for constraining the AGN contribution to reionization and understanding the growth of supermassive black holes.
Girish Kulkarni, G. Worseck, J. Hennawi
semanticscholar +1 more source
COLDz: Shape of the CO Luminosity Function at High Redshift and the Cold Gas History of the Universe [PDF]
Astrophysical Journal, 2018 We report the first detailed measurement of the shape of the CO luminosity function at high redshift, based on >320 hr of the NSF’s Karl G. Jansky Very Large Array (VLA) observations over an area of ∼60 arcmin2 taken as part of the CO Luminosity Density ...
D. Riechers +34 more
semanticscholar +1 more source
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 +7 more
doaj +1 more source
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
Joint Power Spectrum and Voxel Intensity Distribution Forecast on the CO Luminosity Function with COMAP [PDF]
Astrophysical Journal, 2018 We develop a framework for joint constraints on the CO luminosity function based on power spectra (PS) and voxel intensity distributions (VID) and apply this to simulations of CO Mapping Array Pathfinder (COMAP), a CO intensity mapping experiment.
H. Ihle +14 more
semanticscholar +1 more source
The Imprint of Cosmic Reionization on the Luminosity Function of Galaxies [PDF]
Astrophysical Journal, 2018 The (re)ionization of hydrogen in the early universe has a profound effect on the formation of the first galaxies: by raising the gas temperature and pressure, it prevents gas from cooling into small halos, thus affecting the abundance of present-day ...
S. Bose, A. Deason, C. Frenk
semanticscholar +1 more source
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 +3 more
doaj +1 more source