IR census of Be stars in clusters and their surrounding field

Details IR census of Be stars in clusters and their surrounding field IR census of Be stars in clusters and their surrounding field

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop.3340h&link_type=abstract

Spitzer Proposal ID #3340

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Scientific paper

We propose to study the proportion of Be stars in clusters and the galactic field with IRAC, by detecting the IR excess due to the excretion disk around these stars. This will yield an unbiased sample of the Be-star population, including Be stars with small disks and late-type Be stars. The Be-star occurence compared to the properties of the clusters (age, rotation,...) will provide insight into the origin of the Be phenomenon and its role in the evolution of massive stars, which remains a mystery since the discovery of Be stars 140 years ago. IRAC is particularly well suited for such a study since the four IR bands of this camera corresponds to the ideal wavelength domain to detect IR excesses in Be stars and to distinguish them from other similar emission objects.

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