Significado de la función de luminosidad Hα en galaxias australes

By means of CCD frames and image processing techniques we measured the luminosity function of H-alpha of HII regions of nearby galaxies with a high S/N. Several studies were done recently assuming that the shape of the observed luminosity function can be use to determine physical parameters (e.g. ma...

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Detalles Bibliográficos
Autores principales: Feinstein Baigorri, Carlos, Forte, Juan Carlos
Formato: Articulo Comunicacion
Lenguaje:Español
Publicado: 1992
Materias:
Astronomía
Galaxia
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/144810
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-144810
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Astronomía
Galaxia
spellingShingle Astronomía
Galaxia
Feinstein Baigorri, Carlos
Forte, Juan Carlos
Significado de la función de luminosidad Hα en galaxias australes
topic_facet Astronomía
Galaxia
description By means of CCD frames and image processing techniques we measured the luminosity function of H-alpha of HII regions of nearby galaxies with a high S/N. Several studies were done recently assuming that the shape of the observed luminosity function can be use to determine physical parameters (e.g. mass distribution, stellar evolution, stellar mass distribution, etc) of the hidden stellar population. Some of the models only consider the distribution of the integrated stellar mass of the HII regions and others only the evolution of the stellar ionizating population of H11 region. In this work we consider the two effects simultaneously plus the effect of taking in account different stellar formation rate for the host galaxy. This a summary of the results: - The turnover point discover by Kennicutt et al. (1989) appears to have an explanation as the convolution of the stellar formation rate and the stellar mass distribution. - From comparison with observational data (from Feinstein et al. - 1992, this issue and Thesis) some galaxies NGC 2997, NGC 6070, NGC 6384, NGC 7552 seem to have luminosity functions compatible with a constant SFR. NGC 1672 exhibits to have a more complex situation, not compatible with a constant SFR. - In the case of constant SFR, the slope of-2 (Kennicutt et al., 1989, Apj 337,761) can only fit the luminosity function in the bright side of the distribution.
format Articulo
Comunicacion
author Feinstein Baigorri, Carlos
Forte, Juan Carlos
author_facet Feinstein Baigorri, Carlos
Forte, Juan Carlos
author_sort Feinstein Baigorri, Carlos
title Significado de la función de luminosidad Hα en galaxias australes
title_short Significado de la función de luminosidad Hα en galaxias australes
title_full Significado de la función de luminosidad Hα en galaxias australes
title_fullStr Significado de la función de luminosidad Hα en galaxias australes
title_full_unstemmed Significado de la función de luminosidad Hα en galaxias australes
title_sort significado de la función de luminosidad hα en galaxias australes
publishDate 1992
url http://sedici.unlp.edu.ar/handle/10915/144810
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AT fortejuancarlos significadodelafunciondeluminosidadhaengalaxiasaustrales
bdutipo_str Repositorios
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