Spatial population synthesis and emission line analysis of NGC 5253.

Details Spatial population synthesis and emission line analysis of NGC 5253. Spatial population synthesis and emission line analysis of NGC 5253.

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990rmxaa..21..187p&link_type=abstract

Revista Mexicana de Astronomia y Astrofisica, Vol. 21, p. 187 - 191

Astronomy and Astrophysics

Astronomy

Spiral Galaxies: Spectra, Spiral Galaxies: Stellar Populations

Scientific paper

Detailed slit spectrophotometry in the range 3700 - 7200 Å is presented for the nucleus and seven different positions in NGC 5253. Population synthesis models show that NGC 5253 is highly composed in age and characterized by a strong gradient in the sense that the blue components become not only stronger but younger towards the center. The old population substratum is metal deficient [Z/Z0] < -0.5. A similar abundance is derived for the gas with no spatial variations.

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