Rotation measurement of 18 B-type binaries

Details Rotation measurement of 18 B-type binaries Rotation measurement of 18 B-type binaries

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986cha%26a..10..347t&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 10, Issue 4, p. 347-351.

Astronomy and Astrophysics

Astrophysics

1

Stars - Binaries

Scientific paper

Using the HeI 5857 A line observed with a Reticon at the conde focus of the 2.1-metre reflector of McDonald Observatory, we measured the Vsini value for 18 binaries of spectral type B by fitting the observed profile to that of a standard star convolved with Gray's rotational broadening function.
Our results for the two components of ξ2 CrB and the primary of 25 Ser are less than half the catalogue values. The profiles of U CrB and v Sco have a narrow central absorption and very wide wings, and our measured value of 75 km/s for ν Sco, based on the central absorption, is much smaller than the catalogue value of 210 km/s. The profile of AR Cas was found to change with phase.
Our values agree with Slettebak's new system better than with his old system.

Affiliated with

Also associated with

No associations

Rating

Rotation measurement of 18 B-type binaries 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 Rotation measurement of 18 B-type binaries, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotation measurement of 18 B-type binaries will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1121906