The Initial Mass Function and Formation History of Stars in the Galactic Centre

Details The Initial Mass Function and Formation History of Stars in the Galactic Centre The Initial Mass Function and Formation History of Stars in the Galactic Centre

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aspc..439...96b&link_type=abstract

The Galactic Center: a Window to the Nuclear Environment of Disk Galaxies. Proceedings of a workshop held at Shanghai, China on

Astronomy and Astrophysics

Astronomy

Scientific paper

We combine the results of stellar evolution models and recent observations on the total luminosity and mass of stars in the Galactic Centre to determine the most likely form of the IMF of stars in the Galactic Centre. We find that the observations of the Galactic Centre are well consistent with continuous star formation following a canonical IMF and that the observed luminosity in the central parsec is too high to be explained by a long-standing top-heavy IMF. We conclude that if the young stellar discs prove to follow a top-heavy IMF, the circumstances that led to their formation must be very rare, since these have not affected most of the central cluster.

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