Apsidal motion and the third-body problem in the binary HS Her

Details Apsidal motion and the third-body problem in the binary HS Her Apsidal motion and the third-body problem in the binary HS Her

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006arep...50..814k&link_type=abstract

Astronomy Reports, vol. 50, Issue 10, p.814-822

Astronomy and Astrophysics

Astronomy

3

Pacs Numbers 97.80.Hn

Scientific paper

Our analysis of a 22-year uniform series of photoelectric U BV measurements of HS Her, started in 1969 1983 by D.Ya. Martynov and completed by us in 1984 1991, enabled us to determine new times of minima and revise some times of minima published earlier. Combined with other published data, this information can be used to improve the system’s apsidal elements: U obs = (89.7 ± 5.1) years and log-k 2 obs = -2.33(4), testifying to a somewhat stronger concentration of matter towards the center than is predicted by current models for main-sequence stars (log -k 2 th = -2.21). This provides additional evidence that the system’s secondary is at the pre-main-sequence stage of evolution, as we suggested earlier based on our analysis of the system’s photometric elements. We confirm the presence of a third body in the system in a long-period eccentric orbit, as was first suggested in 2002 by Wolf et al. However, in contrast to the results of that paper, we demonstrate that the currently available observational data are insufficient to reliably determine this orbit’s parameters. We estimate the mass of the third body to be M 3 = (1.0-2.0)M &sun; for M 1 = 5M &sun; and M 2 = 1.6 M &sun;.

Affiliated with

Also associated with

No associations

Rating

Apsidal motion and the third-body problem in the binary HS Her 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 Apsidal motion and the third-body problem in the binary HS Her, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apsidal motion and the third-body problem in the binary HS Her will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-871301