[vsnet-outburst 31608] Outburst from a WZ Sge-type dwarf nova HV Vir
Outburst from a WZ Sge-type dwarf nova HV Vir Gary Poyner reported a new outburst from a known WZ Sge-type dwarf nova HV Vir, at V=11.964 mag on 2026/01/05 06:59:02 UTC. https://www.aavso.org/LCGv2/static.htm?DateFormat=Julian&RequestedBands=&Gri... Vir&tojd=2461046.180&delimiter=@@@ Time-resolved observations are encouraged. Best regards & Happy new year! Yusuke -- ---------------------------------------------- South African Astronomical Observatory, Postdoc fellow Yusuke TAMPO / 反保 雄介 EMAIL: tampo@kusastro.kyoto-u.ac.jp ALT. EMAIL: yusuke@saao.ac.za ----------------------------------------------
HV Vir: early superhumps Kubotera-san, Itoh-san, and Josch Hambsch have reported the time-resolved observations. Together with the AAVSO data by Ian Sharp, Vraj Jani, and Peter Starr, the observed light curve shows clear double-peaked early superhumps with an amplitude of ~0.1 mag. Further time-resolved observations are encouraged. Best regards, Yusuke -- ---------------------------------------------- South African Astronomical Observatory, Postdoc fellow Yusuke TAMPO / 反保 雄介 EMAIL: tampo@kusastro.kyoto-u.ac.jp ALT. EMAIL: yusuke@saao.ac.za ----------------------------------------------
HV Vir: ordinary superhumps Kubotera-san, Itoh-san, Moriyama-san, David Messier, and Josch Hambsch have reported further time-resolved observations. Together with the AAVSO data from Ian Sharp, Vraj Jani, and Peter Starr, HV Vir shows positive superhumps since 2026-01-11, and is currently switching to stage-B ordinary superhumps. Further time-resolved observations are encouraged. Best regards, Yusuke -- ---------------------------------------------- South African Astronomical Observatory, Postdoc fellow Yusuke TAMPO / 反保 雄介 EMAIL: tampo@kusastro.kyoto-u.ac.jp ALT. EMAIL: yusuke@saao.ac.za ----------------------------------------------
HV Vir; rapid decline from outburst According to the latest observations by Josch Hambsch, Moriyama-san, and Itoh-san on 27-28 Jan, HV VIr entered the rapid decline from the outburst plateau. This system has never shown rebrightenings in its previous outbursts. Best regards, Yusuke -- ---------------------------------------------- South African Astronomical Observatory, Postdoc fellow Yusuke TAMPO / 反保 雄介 EMAIL: tampo@kusastro.kyoto-u.ac.jp ALT. EMAIL: yusuke@saao.ac.za ----------------------------------------------
participants (1)
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Yusuke Tampo