A FUSE Survey of the Rotation Rates of Very Massive Stars in the Small and Large Magellanic Clouds

Details A FUSE Survey of the Rotation Rates of Very Massive Stars in the Small and Large Magellanic Clouds A FUSE Survey of the Rotation Rates of Very Massive Stars in the Small and Large Magellanic Clouds

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21542518p&link_type=abstract

American Astronomical Society, AAS Meeting #215, #425.18; Bulletin of the American Astronomical Society, Vol. 42, p.339

Astronomy and Astrophysics

Astronomy

Scientific paper

We present projected rotational velocity values for 97 Galactic, 55 SMC, and 106 LMC O-B type stars from archival FUSE observations. The evolved and unevolved samples from each environment are compared through the Kolmogorov-Smirnov test to determine if the distribution of equatorial rotational velocities is metallicity dependent for these massive objects. Stellar interior models predict that massive stars with SMC metallicity will have significantly reduced angular momentum loss on the main sequence compared to their Galactic counterparts. Our results find some support for this prediction but also show that even at Galactic metallicity, evolved and unevolved massive stars have fairly similar fractions of stars with large Vsin i values. Macroturbulent broadening that is present in the spectral features of Galactic evolved massive stars is lower in the LMC and SMC samples. This suggests the processes that lead to macroturbulence are dependent upon metallicity. Support for this work was provided by program GO63 from
FUSE and NASA 06-ADP06-68.

Affiliated with

Also associated with

No associations

Rating

A FUSE Survey of the Rotation Rates of Very Massive Stars in the Small and Large Magellanic Clouds does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A FUSE Survey of the Rotation Rates of Very Massive Stars in the Small and Large Magellanic Clouds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A FUSE Survey of the Rotation Rates of Very Massive Stars in the Small and Large Magellanic Clouds will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-967490