Extensive Photometry of V1838 Aql During the 2013 Superoutburst
Abstract
We present an in-depth photometric study of the 2013 superoutburst of the recently discovered cataclysmic variable V1838 Aql and subsequent photometry near its quiescent state. A careful examination of the development of the superhumps is presented. Our best determination of the orbital period is Porb=0.05698(9) days, based on the periodicity of early superhumps. Comparing the superhump periods at stages A and B with the early superhump value we derive a period excess of ɛ=0.024(2) and a mass ratio of q=0.10(1). We suggest that V1838 Aql is approaching the orbital period minimum and thus has a low-mass star as a donor instead of a substellar object.
- Publication:
-
Revista Mexicana de Astronomia y Astrofisica
- Pub Date:
- April 2019
- DOI:
- 10.48550/arXiv.1810.09864
- arXiv:
- arXiv:1810.09864
- Bibcode:
- 2019RMxAA..55...21E
- Keywords:
-
- techniques: photometric;
- stars: novae;
- cataclysmic variables;
- stars: dwarf novae;
- stars: individual: V1838 Aql;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- Rev. Mex A. A. accepted manuscript. 19 pages, 6 figures