NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-25 T20:58:53 PDT
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For refcode 2013AJ....146...46K:
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2013AJ....146...46K Star Formation Properties in the Local Volume Galaxies via Halpha and Far-ultraviolet Fluxes Karachentsev, Igor D.; Kaisina, Elena I. Abstract. A distance-limited sample of 869 objects from the Updated Nearby Galaxy Catalog is used to characterize the star formation status of the Local Volume population. We present a compiled list of 1217 star formation rate (SFR) estimates for 802 galaxies within 11 Mpc, derived from the Halpha imaging surveys and the GALEX far-ultraviolet survey. We briefly discuss some basic scaling relations between SFR and luminosity, morphology, H I mass, surface brightness, and the environment of the galaxies. About 3/4 of our sample consist of dwarf galaxies, for which we offer a more refined classification. We note that the specific SFR of nearly all luminous and dwarf galaxies does not exceed the maximum value: log (SFR/L_K_) = --9.4 [yr^--1^]. Most spiral and blue dwarf galaxies have enough time to generate their stellar mass during the cosmological time, T_0_, with the observed SFRs. They dispose of a sufficient amount of gas to support their present SFRs over the next T_0_ term. We note that only a small fraction of BCD, Im, and Ir galaxies (about 1/20) proceed in a mode of vigorous starburst activity. In general, the star formation history of spiral and blue dwarf galaxies is mainly driven by their internal processes. The present SFRs of E, S0, and dSph galaxies typically have 1/30-1/300 of their former activity. Key words: catalogs, galaxies: dwarf, galaxies: evolution, stars: formation, surveys
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