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.

Jan 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998acaps..18....1x&link_type=abstract

Acta Astrophys. Sin., Vol. 18, No. 1, p. 1 - 10

Astronomy and Astrophysics

Astrophysics

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

Scientific paper

In order to study the optical spectra of four blue compact galaxies (BCG), the authors applied the population synthesis method based on a grid of star cluster spectra. By analyzing the interior stellar component and its spectra, they solved two questions concerning BCGs, i.e. the age of BCGs and the question of the presence of an optically unseen mass component. It suggests that BCGs are old galaxies in which star formation occurs during short periods of strong activity separated by long quiescent phases. There are some unseen mass components in the BCGs, at least some of the unseen mass is due to old populations. The amount of internal reddening is significantly smaller than the values derived from the Balmer decrement for the same object.

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