{"title":"Average Star Formation Parameters in the Local Volume of the Universe","authors":"I. D. Karachentsev, A. A. Popova","doi":"10.1134/S1990341323600382","DOIUrl":null,"url":null,"abstract":"<p>Based on the fluxes of 1400 nearby galaxies observed in far ultraviolet (FUV) and in the H<span>\\(\\alpha\\)</span> line, we determined the global star formation rate per unit Universe volume, <span>\\(j_{\\textrm{SFR}}=(1.34\\pm 0.16)\\times 10^{-2}M_{\\odot}\\)</span> yr<span>\\({}^{-1}\\)</span> Mpc<span>\\({}^{-3}\\)</span>. With the current star formation rate (<span>\\({SFR}\\)</span>), (<span>\\(65\\pm 4)\\%\\)</span> 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 <span>\\({SFR}\\)</span> on a scale of approximately another 5 billion years.</p>","PeriodicalId":478,"journal":{"name":"Astrophysical Bulletin","volume":null,"pages":null},"PeriodicalIF":1.3000,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Astrophysical Bulletin","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S1990341323600382","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
引用次数: 0
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.
AbstractBased on the fluxes of 1400 nearby galaxies observed in far ultraviolet (FUV) and in the H\(α\) 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\({}^{-3}\).按照目前的恒星形成率(({SFR}\)),观测到的恒星质量的((65\pm 4)\%\)可以在138亿年的宇宙学时间内重现。半径为11 Mpc的本地体积(Local Volume)中的中性气体储量将在大约另外50亿年的尺度上促进当前的({SFR}\)。
期刊介绍:
Astrophysical Bulletin is an international peer reviewed journal that publishes the results of original research in various areas of modern astronomy and astrophysics, including observational and theoretical astrophysics, physics of the Sun, radio astronomy, stellar astronomy, extragalactic astronomy, cosmology, and astronomy methods and instrumentation.