Measurements of radial velocities of α and: A spotted HgMn star?

Details Measurements of radial velocities of α and: A spotted HgMn star? Measurements of radial velocities of α and: A spotted HgMn star?

Jul 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996ap.....39..208m&link_type=abstract

Astrophysics, Volume 39, Issue 3, pp.208-215

Astronomy and Astrophysics

Astrophysics

4

Scientific paper

Measurements of radial velocities from the SiII λ6347A and λ6371Alines and the HeI λ6678A line based on observations of 1989 1994 are examined. The variability of the line shapes over the 96.6-day orbital period is analyzed. Evidence for a second component is found from lines in the spectrum of α And which correspond to the silicon lines λ6347 and λ6371A. The preliminary value for the rotational velocity of the secondary component is 100 120 km/sec. Analysis of the variability of the radial velocities of the HeI λ6678A line during the night has given the rotational period of the star of Prot=Id.012344 and indicates an inhomogeneous distribution either of the helium abundance or of the physical conditions over the surface. Thus, we have the first evidence for the existence of spots on the surface of an HgMn star.

Affiliated with

Also associated with

No associations

Rating

Measurements of radial velocities of α and: A spotted HgMn star? 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 Measurements of radial velocities of α and: A spotted HgMn star?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurements of radial velocities of α and: A spotted HgMn star? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1116257