Resolved photometry of the binary components of RW Aur
Abstract
Resolved UBVRI photometry of RW Aur binary was performed on November 13/14, 2014 during the deep dimming of RW Aur with a newly installed 2.5 meter telescope of the Caucasus observatory of Lomonosov Moscow State University at the mount Shatzhatmaz. At that moment RW Aur A was $\simeq 3^m$ fainter than in November 1994 in all spectral bands. We explain the current RW Aur A dimming as a result of eclipse of the star by dust particles with size $>1 \mu m.$ We found that RW Aur B is also a variable star: it was brighter than 20 years ago at $0.7^m$ in each of UBVRI band (gray brightening).
- Publication:
-
Information Bulletin on Variable Stars
- Pub Date:
- January 2015
- DOI:
- 10.48550/arXiv.1412.7661
- arXiv:
- arXiv:1412.7661
- Bibcode:
- 2015IBVS.6126....1A
- Keywords:
-
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- submitted to IBVS