SIMBAD references

2019ApJ...872..148C - Astrophys. J., 872, 148-148 (2019/February-3)

Radio sources in the nearby universe.


Abstract (from CDS):

We identified 15,658 NRAO VLA Sky Survey (NVSS) radio sources among the 55,288 2 Micron All-Sky Survey eXtended (2MASX) galaxies brighter than k20fe = 12.25 at λ = 2.16 µm and covering the Ω = 7.016 sr of sky defined by J2000 δ > -40° and | b| > 20. The complete sample of 15,043 galaxies with 1.4 GHz flux densities S >= 2.45 mJy contains a 99.9% spectroscopically complete subsample of 9517 galaxies with k20fe <= 11.75. We used only radio and infrared data to quantitatively distinguish radio sources powered primarily by recent star formation from those powered by active galactic nuclei. The radio sources with log[L(WHz–1)]> 19.3 that we used to derive the local spectral luminosity and power-density functions account for >99% of the total 1.4 GHz spectral power densities USF=(1.54±0.20)×1019WHz–1Mpc–3 and UAGN=(4.23±0.78)×1019WHz–1Mpc–3 in the universe today, and the spectroscopic subsample is large enough that the quoted errors are dominated by cosmic variance. The recent comoving star formation rate density indicated by USF is ψ~0.015Myr–1Mpc–3.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): catalogs - galaxies: active - galaxies: luminosity function, mass function - galaxies: star formation - infrared: galaxies - radio continuum: galaxies

VizieR on-line data: <Available at CDS (J/ApJ/872/148): table1.dat>

Errata: erratum vol. 932, art. 74 (2022)

Simbad objects: 15662

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