Photometric observations of the W UMa stars CSS J113505.5+332031, ASAS J142124+1813.1 and HR Boo
Abstract
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.
- Publication:
-
New Astronomy
- Pub Date:
- April 2019
- DOI:
- 10.1016/j.newast.2018.10.006
- Bibcode:
- 2019NewA...68...51M
- Keywords:
-
- Stars: binaries: eclipsing - stars: binaries: close - stars: fundamental parameters - stars: individual:(CSS J113505.5+332031;
- ASAS J142124+1813.1;
- HR Boo)