The First Multi-Color Photometric Study of the Near-Contact Binary as Serpentis

Details The First Multi-Color Photometric Study of the Near-Contact Binary as Serpentis The First Multi-Color Photometric Study of the Near-Contact Binary as Serpentis

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aj....136..337z&link_type=abstract

The Astronomical Journal, Volume 136, Issue 1, pp. 337-343 (2008).

Astronomy and Astrophysics

Astronomy

4

Binaries: Close, Binaries: Eclipsing, Stars: Evolution, Stars: Individual: As Serpentis

Scientific paper

The first complete multi-color CCD photometric light curves of the eclipsing binary AS Ser were obtained over three nights in 2005. Using the latest Wilson-Devinney (WD) code, we computed the photometric elements of this system. It turns out that AS Ser is a near-contact binary system with both components filling more than 99% of their Roche lobes. It belongs to a marginal contact binary system within the parameter uncertainties. The marginal characteristic of AS Ser reveals that this target may be in a rare phase predicted by the thermal relaxation oscillation (TRO) theory. The asymmetry of the light curves can be explained by a dark spot on the secondary component, which is consistent with its late-type nature. Combining all available times of light minimum, we derived a new orbital period of AS Ser and found a periodic oscillation varying within an amplitude of 0.0049 days and a period of 11.8 years. This period change may be the result of the light-time effect due to a presumed tertiary component (M 3 > 0.28M sun) or might result from magnetic activity cycles of the two components.

Affiliated with

Also associated with

No associations

Rating

The First Multi-Color Photometric Study of the Near-Contact Binary as Serpentis 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 The First Multi-Color Photometric Study of the Near-Contact Binary as Serpentis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The First Multi-Color Photometric Study of the Near-Contact Binary as Serpentis will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1137953