SIMBAD references

2006PASJ...58L..19I - Publ. Astron. Soc. Jap., 58, L19-L22 (2006/April-0)

Discovery of a promising candidate of WZ Sge-type dwarf novae, ASAS 160048-4846.2: evidence for double-peaked humps.

IMADA A. and MONARD L.A.G.B.

Abstract (from CDS):

We report on time-resolved CCD photometry during the 2005 June outburst of a dwarf nova, ASAS 160048-4846.2. 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.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - stars: dwarf novae - stars: individual (ASAS 160048-4846.2 (read: ASAS J160048-4846.2)) - stars: novae, cataclysmic variables - stars: oscillations

Simbad objects: 12

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