Age of the stellar population in the nuclei of disk galaxies

Details Age of the stellar population in the nuclei of disk galaxies Age of the stellar population in the nuclei of disk galaxies

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993astl...19..279s&link_type=abstract

Astronomy Letters, Vol. 19, p. 279-282; Pis'ma v Astronomicheskij Zhurnal (ISSN 0320-0108), vol. 19, no. 8, p. 693-700. In Russ

Astronomy and Astrophysics

Astronomy

9

Disk Galaxies, Galactic Nuclei, Metallicity, Stellar Evolution, Ubv Spectra, Astronomical Models, Galactic Evolution, Line Spectra

Scientific paper

It is shown on the basis of observational results with the 6-m telescope that strong Balmer absorption lines are present in the spectra of the nuclei of 50 percent of the early-type disk galaxies (from SO to Sb). The method of evolutionary modeling of integrated spectra is used to show that a significant number of stars younger than 5 billion yr are present in these nuclei. Nucleus metallicity is determined for 21 disk galaxies with old stellar populations in the nuclei.

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