Average Star Formation Parameters in the Local Volume of the Universe
| Autor: | Karachentsev, I. D., Popova, A. A. |
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| Rok vydání: | 2024 |
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| Druh dokumentu: | Working Paper |
| Popis: | Based on the fluxes of 1400 nearby galaxies observed in far ultraviolet (${\rm FUV}$) and in the H$\alpha$ line, we determined the global star formation rate per unit Universe volume, $j_{\rm SFR}=(1.34\pm0.16) 10^{-2}\,M_{\odot}$ yr$^{-1}$ Mpc$^{-3}$. With the current star formation rate (SFR), ($65\pm4)$% 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. Comment: Accepted by Astrophysical Bulletin (v.79, No.2), 12 pages, 9 figures, 1 table |
| Databáze: | arXiv |
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