Journal ArticleDOI
Radio Sources and Star Formation in the Local Universe
TLDR
In this article, the authors 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 > 0.1 M ⊙) ≈ 0.018 M⊙ yr-1 Mpc-3.Abstract:
Galaxies 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 > -2°30' and |b| > 20° 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 > 0.1 M⊙) ≈ 0.018 M⊙ yr-1 Mpc-3. The radio sources in star-forming galaxies may be evolving even at moderately low redshifts (z ~ 0.1).read more
Citations
More filters
Journal ArticleDOI
The physical properties of star-forming galaxies in the low-redshift universe
Jarle Brinchmann,Stephane Charlot,Stephane Charlot,Simon D. M. White,Christy A. Tremonti,Christy A. Tremonti,Guinevere Kauffmann,Timothy M. Heckman,J. Brinkmann +8 more
TL;DR: In this article, the authors present a comprehensive study of the physical properties of ∼ 10 5 galaxies with measurable star formation in the Sloan Digital Sky Survey (SDSS) by comparing physical information extracted from the emission lines with continuum properties, and build up a picture of the nature of star-forming galaxies at z < 0.2.
Journal ArticleDOI
Cosmic Star-Formation History
Piero Madau,Mark Dickinson +1 more
TL;DR: In this article, the authors review the range of complementary techniques and theoretical tools that allow astronomers to map the cosmic history of star formation, heavy element production, and reionization of the Universe from the cosmic "dark ages" to the present epoch.
Journal ArticleDOI
Cosmic Star Formation History
Piero Madau,Mark Dickinson +1 more
TL;DR: In this paper, the authors review the range of complementary techniques and theoretical tools that allow astronomers to map the cosmic history of star formation, heavy element production, and reionization of the Universe from the cosmic "dark ages" to the present epoch.
Journal ArticleDOI
Infrared Luminosity Functions from the Chandra Deep Field-South: The Spitzer View on the History of Dusty Star Formation at 0 ≲ z ≲ 1*
Emeric Le Floc'h,Emeric Le Floc'h,Casey Papovich,Herve Dole,Eric F. Bell,Guilaine Lagache,George H. Rieke,Eiichi Egami,Pablo G. Pérez-González,Almudena Alonso-Herrero,Marcia J. Rieke,Myra Blaylock,Charles W. Engelbracht,Karl D. Gordon,Dean C. Hines,Dean C. Hines,Karl Misselt,Jane E. Morrison,Jeremy Mould +18 more
TL;DR: In this paper, the authors analyzed a sample of ~2600 Spitzer MIPS 24 μm sources and located in the Chandra Deep Field-South to characterize the evolution of the comoving infrared (IR) energy density of the universe up to z ~ 1.
Journal ArticleDOI
The GALEX Ultraviolet Atlas of Nearby Galaxies
Armando Gil de Paz,Armando Gil de Paz,Samuel Boissier,Barry F. Madore,Barry F. Madore,Mark Seibert,Y. H. Joe,Y. H. Joe,Alessandro Boselli,Ted K. Wyder,David A. Thilker,Luciana Bianchi,Soo-Chang Rey,Soo-Chang Rey,R. Michael Rich,Tom A. Barlow,Tim Conrow,Karl Forster,Peter G. Friedman,D. Christopher Martin,Patrick Morrissey,Susan G. Neff,David Schiminovich,Todd Small,Jose Donas,Timothy M. Heckman,Young-Wook Lee,Bruno Milliard,Alexander S. Szalay,Sukyoung K. Yi +29 more
TL;DR: In this article, the authors presented images, integrated photometry, and surface-brightness and color profiles for a total of 1034 nearby galaxies recently observed by the Galaxy Evolution Explorer (GALEX) satellite in its far-ultraviolet (FUV; λ_(eff) = 1516 A) and near-ult ultraviolet (NUV; Δ = 2267 A) bands.
References
More filters
Journal ArticleDOI
Star formation in galaxies along the hubble sequence
TL;DR: In this article, the authors focus on the broad patterns in the star formation properties of galaxies along the Hubble sequence and their implications for understanding galaxy evolution and the physical processes that drive the evolution.
Journal ArticleDOI
The NRAO VLA Sky Survey
James J. Condon,W. D. Cotton,Eric W. Greisen,Q. F. Yin,Richard A. Perley,G. B. Taylor,J. J. Broderick +6 more
TL;DR: The NRAO VLA Sky Survey (NVSS) covers the sky north of J2000 at 1.4 GHz as discussed by the authors, including a set of 2326 4?? 4? continuum cubes with three planes containing Stokes I, Q, and U images plus a catalog of almost 2? 106 discrete sources stronger than S 2.5 mJy.
Journal ArticleDOI
The Global Schmidt law in star forming galaxies
TL;DR: In this paper, the Schmidt law was used to model the global star formation law over the full range of gas densities and star formation rates observed in galaxies, and the results showed that the SFR scales with the ratio of the gas density to the average orbital timescale.
Journal ArticleDOI
The Global Schmidt Law in Star Forming Galaxies
TL;DR: In this paper, the Schmidt law was used to model the global star formation law, over the full range of gas densities and star formation rates (SFRs) observed in galaxies.