Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002pasp..114..766q&link_type=abstract
The Publications of the Astronomical Society of the Pacific, Volume 114, Issue 797, pp. 766-769.
Astronomy and Astrophysics
Astronomy
2
Stars: Binaries: Close, Stars: Individual (Rx Geminorum)
Scientific paper
An analysis of the times of minimum light for the long-period Algol-type eclipsing binary RX Gem is presented based on a new linear ephemeris. The O-C curve shows a cyclic oscillation with a period of 55.7 yr and a semiamplitude of 0.0645 day. Assuming the change to be due to the presence of a ``third body'' revolving around the RX Gem system, the parameters of the third body's orbit are derived. Since the third-body assumption is in good agreement with the spectroscopic data from several authors and with published photometric solutions (Gaposchkin, Hall, & Walter; Giuricin et al.), RX Gem is likely to be a triple system. In this case, the third body is an A-type star in a circular orbit, which is nearly coplanar to the orbit of the eclipsing pair. However, the recent light-curve analysis by Olson & Etzel does not show any third light, so the third star (M3>2.41 Msolar) may be an unseen neutron star or black hole. Additional eclipse timings over the next decade will be important to verify the presence of the third body.
Liu Dengliang
Qian Shengbang
Soonthornthum BOONRUCKSAR
Tan Wenli
No associations
LandOfFree
Is the Algol-type Eclipsing Binary RX Geminorum a True Triple System? 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 Is the Algol-type Eclipsing Binary RX Geminorum a True Triple System?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Is the Algol-type Eclipsing Binary RX Geminorum a True Triple System? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1664280