Young massive stellar populations in M 33

Details Young massive stellar populations in M 33 Young massive stellar populations in M 33

Sep 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...337...39i&link_type=abstract

Astronomy and Astrophysics, v.337, p.39-42 (1998)

Astronomy and Astrophysics

Astrophysics

4

Methods: Data Analysis, Stars: Supergiants, Galaxies: M 33, Galaxies: Stellar Content

Scientific paper

In this paper we estimate the ratio OB stars to red supergiants (OB/R) as a function of the distance from the centre of M 33. We found a gradient of the ratio (OB/R) really exists. Our study is based on a new approach in estimating the errors on the ratio (OB/R). On the other hand, by applying a new correlation technique between OB star candidates and red supergiant candidates in the central region of M 33, the gradient becomes pronounced. Our results confirm the existence of such a gradient and we consider this fact as a consequence of a similar gradient of the chemical abundance in M 33.

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