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 ∈= 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.

Bibliographic Details

Main Authors:	Echevarría,J., Miguel,E. de, Hernández Santisteban,J. V., Michel,R., Costero,R., Sánchez,L. J., Ruelas-Mayorga,A., Olivares,J., González-Buitrago,D., Jones,J. L., Oskanen,A., Goff,W., Ulowetz,J., Bolt,G., Sabo,R., Hambsch,F.-J, Slauson,D., Stein,W.
Format:	Digital revista
Language:	English
Published:	Universidad Nacional Autónoma de México, Instituto de Astronomía 2019
Online Access:	http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0185-11012019000100021
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