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arXiv · 1810.09864

Extensive Photometry of V1838 Aql during the 2013 Superoutburst

J. Echevarría·E. de Miguel·J. V. Hernández Santisteban·R. Michel·R. Costero·L. J. Sánchez·A. Ruelas-Mayorga·J. Olivares·D. González-Buitrago·J. L. Jones·A. Oskanen·W. Goff·J. Ulowetz·G. Bolt·R. Sabo·F. -J Hambsch·D. Slauson·W. Stein
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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 {\epsilon} = 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 sub-stellar object.

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J. Echevarría, E. de Miguel, J. V. Hernández Santisteban, R. Michel, R. Costero, L. J. Sánchez, A. Ruelas-Mayorga, J. Olivares, D. González-Buitrago, J. L. Jones, A. Oskanen, W. Goff, J. Ulowetz, G. Bolt, R. Sabo, F. -J Hambsch, D. Slauson, W. Stein. 2018-10-23. Extensive Photometry of V1838 Aql during the 2013 Superoutburst. https://arxiv.org/abs/1810.09864

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