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Home » Literature » Reference Lookup

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TitleRadio Sources and Star Formation in the Local Universe
AuthorsCondon, J. J.; Cotton, W. D.; Broderick, J. J.
Bibcode

2002AJ....124..675C   Search ADS ↗

AbstractGalaxies from the entire Uppsala Galaxy Catalog (UGC) have been identified with 4583 radio sources stronger than 2.5 mJy at 1.4 GHz from the NRAO VLA Sky Survey (NVSS). The complete sample of 3398 galaxies brighter than mp=14.5 in the area defined by δ>-2deg30' and |b|>20deg yielded the UGC/NVSS sample of 1966 radio sources. Their dominant energy sources were classified as stars (85%) or active galactic nuclei (15%). The luminosity function of star-forming galaxies agrees well with the far-infrared (FIR) luminosity function converted to 1.4 GHz by the FIR/radio correlation. The spectral power density of star-forming galaxies is USF=(1.53+/-0.07)×1019 W Hz-1 Mpc-3 (statistical errors only) if H0=70 km s-1 Mpc-1. We used a model consistent with the observed FIR/radio correlation to estimate the corresponding star formation rate density within the past τ~3×108 yr; it is ρSF(M>0.1Msolar)~0.018 Msolar yr-1 Mpc-3. The radio sources in star-forming galaxies may be evolving even at moderately low redshifts (z~0.1).
Objects

4582 Objects    Search NED ↙

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Award Number 80NSSC21M0037, and operated by the California Institute of Technology.

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