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Spectroscopy of Blue Compact Galaxies
Author(s) -
Esposito A. A. M.,
Rafanelli P.,
Lipovetskid̊ V. A.
Publication year - 1997
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.2113180408
Subject(s) - physics , supernova , astrophysics , galaxy , interstellar medium , spectroscopy , astronomy , helium , emission spectrum , spectral line , atomic physics
Blue Compact Galaxies (BCGs) are gas‐rich systems undergoing very massive starburst events which involve the entire galaxy. We performed a spectroscopic study of 12 BCG in order to determine metallicities and helium content. Some objects show presence of broadened emission lines, probably due to internal motion of the interstellar medium, caused by intense stellar winds and supernova explosions.