Search for cool white dwarfs with GSC2

Details Search for cool white dwarfs with GSC2 Search for cool white dwarfs with GSC2

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004iaus..220..207c&link_type=abstract

International Astronomical Union Symposium no. 220, held 21 - 25 July, 2003 in Sydney, Australia. Eds: S. D. Ryder, D. J. Pisano

Astronomy and Astrophysics

Astronomy

Scientific paper

Microlensing experiments have suggested that a significant part of the dark halo of the Milky Way could be composed of matter in the form of massive compact halo objects (MACHOs). Cool ancient white dwarfs (WDs) are the natural candidates. Here we present a new survey of halo WDs and evaluate the local space density using an accurate kinematic analysis. A comparison to a revaluation of the Oppenheimer et al. result is also provided. The local space density estimated for the two independent samples is about ˜ 10-5 M&sun; pc-3.

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