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Average Star Formation Parameters in the Local Volume of the Universe

  • I. D. Karachentsev,
  • A. A. Popova

摘要

Abstract

Based on the fluxes of 1400 nearby galaxies observed in far ultraviolet (FUV) and in the H \(\alpha\) line, we determined the global star formation rate per unit Universe volume, \(j_{\textrm{SFR}}=(1.34\pm 0.16)\times 10^{-2}M_{\odot}\) yr \({}^{-1}\) Mpc \({}^{-3}\) . With the current star formation rate ( \({SFR}\) ), ( \(65\pm 4)\%\) of the observed stellar mass is reproduced in the cosmological time of 13.8 billion years. The neutral gas reserves in the Local Volume with a radius of 11 Mpc will facilitate the current \({SFR}\) on a scale of approximately another 5 billion years.