Photometric observations of the W UMa stars CSS J113505.5+332031, ASAS J142124+1813.1 and HR Boo

Autor:	Diana P. Kjurkchieva, Raul Michel
Rok vydání:	2019
Předmět:	Physics 010308 nuclear & particles physics Binary number Astronomy and Astrophysics Astrophysics Mass ratio Stellar classification Light curve 01 natural sciences Stars Space and Planetary Science 0103 physical sciences Low Mass 010303 astronomy & astrophysics Instrumentation
Zdroj:	New Astronomy. 68:51-56
ISSN:	1384-1076
DOI:	10.1016/j.newast.2018.10.006
Popis:	Multicolor photometric observations of the W UMa binaries CSS J113505.5+332031, ASAS J142124+1813.1 and HR Boo are presented. They led to improvement of the orbital periods of CSS J113505.5+332031 and HR Boo. The light curve solutions revealed that all the targets are overcontact binaries with moderate fill-out factors whose components are of G and K spectral types. ASAS J142124+1813.1 and HR Boo undergo total eclipses and their mass ratios are well-determined. The small mass ratio of ASAS J142124+1813.1 puts this target in the list of W UMa binaries with extreme low mass ratios. The possible solutions for the partially-eclipsed binary CSS J113505.5+332031 and their precision are discussed in detail. Masses, radii and luminosities of the target components were estimated by our light curve solutions and GAIA distances.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::acc75c7303cd7b6a5e5cd092737f0234 https://doi.org/10.1016/j.newast.2018.10.006 Zobrazit plný text záznamu Full Text from ScienceDirect