Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...333..199s&link_type=abstract
Astronomy and Astrophysics, v.333, p.199-204 (1998)
Astronomy and Astrophysics
Astrophysics
8
Stars: Coronae, Stars: Activity, Binaries: Eclipsing, Stars: Fundamental Parameters, Stars: Individual: Alpha Crb
Scientific paper
Four ROSAT X-ray observations of the secondary optical minimum of the eclipsing binary system alpha CrB taken in 1992, 1993 and 1997 are presented. Because of the totality of the X-ray eclipse, the times of mid eclipse can be accurately determined from the ROSAT data. The period between secondary minima P_s is found to be significantly different from the optically well determined period between primary minima P_p, thus indicating apsidal motion. The observed value P_s - P_p = 4.8 +/- 2.1 seconds is, first, shown to be almost exclusively due to the primary component, and second, consistent with our current knowledge of alpha CrB A. The relativistic contribution to the observed value is 0.95 seconds or 17 % of the total effect.
No associations
LandOfFree
Discovery of apsidal motion in alpha Coronae Borealis by means of ROSAT X-ray eclipse timing 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 Discovery of apsidal motion in alpha Coronae Borealis by means of ROSAT X-ray eclipse timing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discovery of apsidal motion in alpha Coronae Borealis by means of ROSAT X-ray eclipse timing will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1362957