Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011newa...16..265y&link_type=abstract
New Astronomy, Volume 16, Issue 4, p. 265-268.
Astronomy and Astrophysics
Astronomy
Scientific paper
We present a multicolor photometry for the eclipsing binary WY Hydrae, observed on four nights of 2008 December. From our new observations and Carr’s data, the photometric solutions were deduced by using the updated W-D program. The results show that WY Hya is a detached binary with a mass ratio of q = 0.970(±0.005).By analyzing the O-C curve, it is found that there exists either a continuous period increase or a cyclic variation. From Eq. , the orbital period of WY Hya secularly increases at a rate of dP/dt = +3.56(±0.37) × 10-7 days/yr, which may be interpreted by some mass transfer for the near-contact configuration or tidal dissipation. From Eq. , the period and semi-amplitude of the periodic oscillation are P3 = 95.4(±4.2) yr and A = 0d.0087(±0d.0003), respectively. This may be likely attributed by light-time effect via the presence of the assumed third body. Assumed in the coplanar orbit with the binary, the mass of the third body should be M3 = 0.18 M&sun;. If the unseen additional companion exists, it will extract angular momentum from the binary system. Finally, WY Hya with high fill-out factors (i.e., f1,2 > 80%), may evolve into a semi-detached configuration.
Dai Hai-Feng
Yang Yuan-Gui
No associations
LandOfFree
A photometric study of the detached binary WY Hydrae with twin components 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 A photometric study of the detached binary WY Hydrae with twin components, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A photometric study of the detached binary WY Hydrae with twin components will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1155287