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A photometric study of the high-mass-ratio contact binary AV Puppis
- Publication Year :
- 2019
-
Abstract
- The multi-color photometric light curves for a contact binary AV Puppis (AV Pup) in $VR_cI_c$ bandpasses are presented, and they are analyzed by using of the 2013 version of the Wilson-Devinney (W-D) code. The solutions suggest that AV Pup is a peculiar A-subtype W UMa contact binary with a high mass ratio ($q=m_2/m_1= 0.896$) and a fill-out factor ($f=10\%$). Combining with our newly determined times of minimum with those collected from literatures, the orbital period changes of this system are investigated. The $O-C$ analysis shows that the orbital period of AV Pup is increasing at a rate of $\mathrm{d}P/\mathrm{d}t=4.83 \times 10^{-7} \ \mathrm{days \ yr^{-1}}$, which can be explained by mass transfer from the less massive component to the more massive one.<br />9 pages, 4 figures
- Subjects :
- Physics
010308 nuclear & particles physics
FOS: Physical sciences
Astronomy and Astrophysics
Contact binary
Astrophysics
Mass ratio
Light curve
Orbital period
01 natural sciences
Astrophysics - Solar and Stellar Astrophysics
Space and Planetary Science
Mass transfer
0103 physical sciences
High mass
010303 astronomy & astrophysics
Solar and Stellar Astrophysics (astro-ph.SR)
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....ba63277634e22b092137876f7cee18cf