[vsnet-alert 1021] possible low state of HS Vir

[Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>]

    V-band CCD observation at Ouda Station (Kyoto University) suggests
the SU UMa-type dwarf nova HS Vir may be undergoing a low state.

    VIRHS       970629.465 17.76V Oud

    This magnitude is nearly one or two magnitude fainter than the nominal
quiescence, making it the faintest during our three-year's series.

    HS Vir is known as a low-amplitude, frequently outbursting SU UMa-type
dwarf nova (Kato et al., in preparation).  Some authors suggest the
similarity to the so-called ER UMa stars, or qualify it as a member filling
the gap between ER UMa stars and more usual SU UMa stars.

    The current episode, however, seems to suggest the star is not a simple
relative to ER UMa stars.  Follow-up observations are strongly encouraged.

Regards,
Taichi Kato

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