2012/10/03 by Akira Imada, Hideyuki Izumiura, Daisuke Kuroda +4 · 7 citations
Physics and Astronomy · #Accretion (finance) #Accretion disc #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Astrophysics and Star Formation Studies #Dwarf nova #Light curve #Photometry (optics) #RADIUS #astro-ph.SR
paper · pdf · doi:10.1093/pasj/64.5.l5
published in Publications of the Astronomical Society of Japan 64(5) (Oxford University Press) · 4 pages, 4 figure, PASJ letter in press
arxiv created 2012/10/03 · openalex publication_date 2012/10/25 · arxiv updated 2015/06/11 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Abstract We report on time-resolved photometry during a 2012 January normal outburst of SU UMa. The light curve shows hump-like modulations with a period of 0.07903(11) d, which coincides with the known superhump period of SU UMa during superoutbursts. We interpret this as a superhump, based on the observed periodicity, profiles of the averaged light curve, and the g'-I\rm c variation during the normal outburst. This is the first case that superhumps have been detected during an isolated normal outburst of SU UMa-type dwarf novae. The present result strongly suggests that the radius of the accretion disk already reaches the 3:1 resonance, even in the midst of the supercycle.