Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993rmxaa..27..171p&link_type=abstract
Revista Mexicana de Astronomia y Astrofisica, 27, 171
Astronomy and Astrophysics
Astronomy
6
Scientific paper
RESUMEN Se han determinado magnitudes aparentes B,V,R e I para 47 galaxias HIl seleccionadas de la literatura, para las cuales existen datos espectrofbtome'tricos de alta calidad. Con estos datos, se han obtenido magnitudes absolutas e indices de color de los objetos. Las magnitudes absolutas azules derivadas estan distribuidas en el intervalo entre -22 y -14, con el maMmo en MB -19, y los indices de color tienen valores medios (MB - Mv) = 0.48+0.57, (Mv - MR) = 0.33+0.51, (MR - M1) = 0.26+0.59. Se discute el comportamiento de una posible relaci6n entre la Metalicidad y la Luminosidad de los objetos. ABSTRACT B, V, R and I apparent magnitudes have been determined for 47 HIl galaxies from the literature for which high quality spectrophotometric data exist. From these data we derive absolute magnitudes and color indices. The measured absolute magnitudes, MB, are in the range from -22 to -14 with a maximum around -19 and the mean color indices are (MB-Mv) = 0.48+0.57, (Mv-MR) = 0.33+0.51, (MR - M1) = 0.26+0.59. The behaviour of a possible MetallicityLuminosity relation is discussed. Key words: GALAXIES: PHOTOMETRY - GALAXIES: STARBURST
Ayala Sandra
Peña Manuel
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