Refined investigation of the low-amplitude contact binary V1003 Her

We present an extensive analysis of the low amplitude, contact binary V1003 Her, based on the new , CCD photometric light curves in combination with published radial velocity (RV) curves. We investigate the stable configurations for the system with two independent methods and modeling tools: PHOEBE,...

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Bibliographic Details
Published in:Astrophysics and space science 2015-05, Vol.357 (1), p.1-10, Article 59
Main Authors: Papageorgiou, A., Christopoulou, P.-E., Pribulla, T., Vaňko, M.
Format: Article
Language:English
Subjects:
Astrobiology
Astronomy
Astrophysics
Astrophysics and Astroparticles
Contact
Cosmology
Heuristic
Inclination
Observations and Techniques
Original Article
Phoebe
Photometry
Physical properties
Physics
Physics and Astronomy
Radial velocity
Scanning
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
Stars & galaxies
Temperature
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Summary:We present an extensive analysis of the low amplitude, contact binary V1003 Her, based on the new , CCD photometric light curves in combination with published radial velocity (RV) curves. We investigate the stable configurations for the system with two independent methods and modeling tools: PHOEBE, ROCHE, via heuristic scanning and genetic algorithms, although the very low inclination of the system can place limitations. All methods indicate that V1003 Her is most likely in overcontact state with unequal components with temperature difference of 550 K, a mass ratio of q =0.373 and a contact degree of 36±10 %. As it is viewed at the very low inclination of i ∼38 ∘ ±1 ∘ , if its configuration is confirmed, it will be among the most massive W-subtype of W UMa systems. This conclusion is also supported by other published models. However, in order to conclude reliable physical properties of the system, the high-precise based-ground photometry (or satellite photometry) and spectroscopic follow-up of V1003 Her is required.
ISSN:0004-640X
1572-946X
DOI:10.1007/s10509-015-2318-3