Stellar population in the nuclear region of NGC 3031

Details Stellar population in the nuclear region of NGC 3031 Stellar population in the nuclear region of NGC 3031

Dec 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974a%26a....37...57j&link_type=abstract

Astronomy and Astrophysics, vol. 37, no. 1, Dec. 1974, p. 57-64. Translation.

Astronomy and Astrophysics

Astrophysics

8

Astronomical Models, Galactic Nuclei, Galactic Structure, Star Distribution, Stellar Spectra, Absorption Spectra, B Stars, Hot Stars, Mass Ratios, O Stars, Spectral Line Width, Stellar Luminosity

Scientific paper

The present investigation, obtains synthetic models of stellar population which allow one to interpret the equivalent widths of absorption lines and the continuum flux observed in the nuclear region of NGC 3031. We obtain several possible solutions; all these models are characterized by the presence of hot stars and of stars with strong metallic lines. This can be likely interpreted as due to successive generations of stars and is consistent with the presence of interstellar gas. Model I, characterized by a mass-luminosity ratio equal to 0.6, gives the best fit with observations, which suggests a red-giant-dominated population.

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