Population synthesis for the spectra of blue compact dwarf galaxies.

Details Population synthesis for the spectra of blue compact dwarf galaxies. Population synthesis for the spectra of blue compact dwarf galaxies.

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999acaps..19..380x&link_type=abstract

Acta Astrophys. Sin., Vol. 19, No. 4, p. 380 - 392

Astronomy and Astrophysics

Astrophysics

Compact Galaxies: Population Synthesis, Compact Galaxies: Blue Galaxies, Compact Galaxies: Star Formation

Scientific paper

In order to study the history of star formation, energy source and internal dust distribution in blue compact dwarf galaxies (BCDGs), the authors have compared the observed spectra of the nuclei of 7 BCDGs with the predictions of the stellar population synthesis model. The results suggest that BCDGs are old galaxies, in which star formation occurs in short intense bursts separated by long quiescent phases. The authors have derived the inner reddening that affects the nuclear stellar population by the population synthesis method and the internal reddening of the emitting gas clouds from the Balmer line ratio and found the former to be consistently and significantly smaller than the latter. Finally, they suggest a detailed evolutionary link among different dwarf galaxies.

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