Stellar population synthesis for the spectra of blue compact galaxies.

Details Stellar population synthesis for the spectra of blue compact galaxies. Stellar population synthesis for the spectra of blue compact galaxies.

Jun 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998cha%26a..22..145x&link_type=abstract

Chin. Astron. Astrophys., Vol. 22, No. 2, p. 145 - 154

Astronomy and Astrophysics

Astrophysics

Compact Galaxies: Population Synthesis, Compact Galaxies: Blue Galaxies, Compact Galaxies: Reddening, Compact Galaxies: Starbursts

Scientific paper

The method of population synthesis based on a grid of spectra of star clusters of different ages and metallicities is applied to four BCGs. The results indicate that the BCGs are old galaxies in which star formation occurs in short spurts separated by long quiescent phases. There are unseen mass in BCGs, at least part of which is due to old populations. The amount of reddening the authors found is significantly smaller than was found from the Balmer line ratio, and this can be explained by a model of foreground dust clumps, with different covering factors for the gas and stars.

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