Star Formation Rate in late-type galaxies: I- The H(alpha) and FUV integrated values
| Autor: | Héctor O. Castañeda, I. Vega-Acevedo, M. A. Magaña Serrano, A. M. Hidalgo Gámez |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Physics
010308 nuclear & particles physics Star formation Late type FOS: Physical sciences Astronomy and Astrophysics Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences Astrophysics - Astrophysics of Galaxies Galaxy Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) 0103 physical sciences 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics |
| Popis: | The Star Formation Rate (SFR) was determined from a sample of 36 late-type galaxies (14 dS and 22 Sm), from the H(alpha) and Far Ultraviolet (FUV) flux. We found that the SFR(FUV) was in most cases higher than the SFR(H(alpha)).We also obtained that the SFR is larger for Sm galaxies and smaller for barred galaxies, for any morphological type, in both diagnostic methods. In addition, a study of the spatial distribution of star formation within these galaxies was made, concluding that there is not a preferential place for the star formation. Finally, we studied the role of the Diffuse Ionized Gas in the SFR value, finding that the H(alpha) flux contribution coming from this gas should not be included in the SFR determination unless it is verified that leaking photons are the only source of the neutral gas ionization. 25 pages, 8 figures, 5 tables. Submitted to RevMex A&A, referee's comments included |
| Databáze: | OpenAIRE |
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