Spectroscopic study of blue compact galaxies
نویسندگان
چکیده
منابع مشابه
Spectroscopic study of blue compact galaxies I . The spectra ⋆
Blue compact galaxies are compact objects that are dominated by intense star formation. Most of them have dramatically different properties compared to the Milky Way and many other nearby galaxies. Using the IRAS, H i data, and optical spectra, we wanted to measure the current star formation rates, stellar components, metallicities, and star formation histories and evolution of a large blue com...
متن کاملSpectroscopic Study of Blue Compact Galaxies Iii. Empirical Population Synthesis
This is the third paper of a series dedicated to the study of the star formation rates, star formation histories, metallicities and dust contents of a sample of blue compact galaxies (BCGs). We constrain the stellar contents of 73 blue compact galaxies by analyzing their continuum spectra and the equivalent widths of strong stellar absorption features using a technique of empirical population s...
متن کاملSpectroscopic study of blue compact galaxies IV. Star formation rates and gas depletion timescales
This is the fourth paper in a series studying star formation rates, stellar components, metallicities, and star formation histories of a blue compact galaxy (BCG) sample. Using Hα, [O ii]λ3727, infrared (IR), radio (1.4GHz) luminosities and neutral hydrogen (H i) gas masses, we estimated star formation rates and gas depletion timescales of 72 star-forming BCGs. The star formation rates of the B...
متن کاملSpectroscopic study of blue compact galaxies V . oxygen abundance and the metallicity - luminosity relation
This is the fifth paper in a series studying the stellar components, star formation histories, star formation rates and metallicities of a blue compact galaxy (BCG) sample. Based on our high-quality groundbased spectroscopic observations, we have determined the electron temperatures, electron densities, nitrogen abundances and oxygen abundances for 72 star-forming BCGs in our sample, using diff...
متن کاملSpectroscopic Study of Blue Compact Galaxies II. Spectral Analysis and Correlations
This is the second paper in a series studying the star formation rates, stellar components, metallicities, and star formation histories and evolution of a sample of blue compact galaxies. We analyzed spectral properties of 97 blue compact galaxies, obtained with the Beijing Astronomical Observatory (China) 2.16 m telescope, with spectral range 3580Å – 7400Å. We classify the spectra according to...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2003
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20030442