Discovery of a Promissing Candidate of WZ Sge-Type Dwarf Novae, ASAS 160048-4846.2: Evidence for Double-Peaked Humps
arXiv:astro-ph/0511170 · doi:10.1093/pasj/58.2.L19
Abstract
We report on time-resolved CCD photometry during the 2005 June outburst of a dwarf nova, ASAS160048-4846.2. The observed light curves unambiguously showed embryonic humps with a period of 0.063381(41) days, after which genuine superhumps emerged with a period of 0.064927(3) days. Based on evidence for double-peaked humps in the earlier stage of the outburst, this object might be qualified as the seventh member of WZ Sge-type dwarf novae after Var Her 04. If the former period is the same as, or very close to the orbital period of the system, as in other WZ Sge systems, the fractional superhump excess is about 2.4${%}$. This value is unexpectedly larger than that of other WZ Sge-type dwarf novae. The early phase of our observing run provided evidence for the transition from chaotic humps to genuine superhumps, together with increasing the amplitude.
4 pages, 6 figures, submitted to PASJ
References in corpus (6)
- Cataclysmic Variables from SDSS II. The Second Year
- Variable Star Network: World Center for Transient Object Astronomy and Variable Stars
- Is evidence for enhanced mass transfer during dwarf-nova outbursts well substantiated?
- Pulsations, Boundary Layers, and Period Bounce in the Cataclysmic Variable RE J1255+266
- Period change of Superhumps in the WZ Sge-Type Dwarf Nova, HV Virginis
- A New Cataclysmic Variable in Hercules
Cited by in corpus (9)
- Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae
- WZ Sge-Type Dwarf Novae
- New Method to Estimate Binary Mass Ratios by Using Superhumps
- Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. VII: The Seventh Year (2014-2015)
- Cyclic brightening in the short-period WZ Sge-type cataclysmic variable SDSS J080434.20+510349.2
- Long-term monitoring of the short period SU UMa-type dwarf nova, V844 Herculis
- Photometric Studies of a WZ Sge-Type Dwarf Nova Candidate, ASAS160048-4846.2
- Photometric Studies of New Southern SU UMa-type dwarf novae, FL Triangulum Australe and CTCV J0549-4921
- Dwarf Novae in the Shortest Orbital Period Regime: I. A New Short Period Dwarf Nova, OT J055717+683226