The first photometric investigation of the neglected short period binary DY CVn
| Autor: | Liu Jie, Qu ZhiNing, Hu YanFei, Jiang Linqiao, Yuan Yu-quan |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
Angular momentum Period (periodic table) 010308 nuclear & particles physics Diagram Astronomy Binary number Astronomy and Astrophysics Contact binary Astrophysics Mass ratio Orbital period 01 natural sciences Space and Planetary Science 0103 physical sciences Variation (astronomy) 010303 astronomy & astrophysics Instrumentation |
| Zdroj: | New Astronomy. 54:103-108 |
| ISSN: | 1384-1076 |
| DOI: | 10.1016/j.newast.2017.01.010 |
| Popis: | We present new photometric observations of the short period binary DY CVn. By using the Wilson-Devinney code of 2013 version, we found that DY CVn is a shallow contact binary ( f = 13.2 % ) with a high mass ratio of q = 1.251 . It is a W-subtype contact system where the more massive component is about 113 K cooler than the less massive one. From 44 available CCD times of light minimum collected from the references and 3 new ones in the present paper, the variation of the orbital period is studied. It is found that the O − C diagram shows a cyclic variation, and the most plausible explanation for this cyclic change is the light-travel time effect via a third body, since an outer third companion could play an important role for its formation by removing angular momentum from the central binary. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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