A Substellar Mass Function for Alpha Per

Details A Substellar Mass Function for Alpha Per A Substellar Mass Function for Alpha Per

2002-09-02

arxiv.org/abs/astro-ph/0209032v1

Astron.Astrophys. 395 (2002) 813-822

Astronomy and Astrophysics

Astrophysics

Astronomy and Astrophysics, accepted

Scientific paper

10.1051/0004-6361:20021262

We present a deep, wide-field optical survey of the young stellar cluster Alpha Per, in which we have discovered a large population of candidate brown dwarfs. Subsequent infrared photometric follow-up shows that the majority of them are probable or possible members of the cluster, reaching to a minimum mass of 0.035 Msun. We have used this list of members to derive the luminosity and mass functions of the substellar population of the cluster (alpha=0.59+-0.05) and compared its slope to the value measure for the Pleiades. This comparison indicates that the two cluster mass functions are, indeed, very similar.

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