Rotational velocities of B-type stars from the Edinburgh-Cape survey

Details Rotational velocities of B-type stars from the Edinburgh-Cape survey Rotational velocities of B-type stars from the Edinburgh-Cape survey

Oct 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...338...85m&link_type=abstract

Astronomy and Astrophysics, v.338, p.85-90 (1998)

Astronomy and Astrophysics

Astrophysics

8

Stars: Early-Type, Stars: Rotation, Stars: Formation Galaxy: Halo, Galaxy: Stellar Content

Scientific paper

The projected rotational velocity distribution for a sample of 34 high Galactic latitude B-type stars from the Edinburgh-Cape Faint Blue Object Survey is presented to investigate the evolutionary status of the group as a whole. Statistical analyses of the distribution show it to be similar to that expected if the sample contained mainly normal Population i early B-type stars, although a contamination of up to 20 % by evolved stars cannot be ruled out. This implies that a large fraction of the sample consists of normal Population i B-type stars similar to those found in the Galactic disk. Possible mechanisms explaining the presence of these stars in the halo are briefly discussed.

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