[vsnet-preprint 62] HV Vir preprint

[Taichi Kato <tkato>]

HV Vir preprint

Dear Colleagues,

   The following paper is accepted for publication in PASJ.

   "HV Virginis and WZ Sge-Type Dwarf Novae"
    by T. Kato, Y. Sekine, R. Hirata

   The paper presents a new analysis of the WZ Sge-type dwarf nova HV Vir.
The paper also presents a substantial amount of fresh knowledge regarding
WZ Sge itself, upon the current outburst.  The paper is too long to be
posted here, and please retrieve the prepreint from the VSNET ftp server.

   http://ftp.kusastro.kyoto-u.ac.jp/pub/vsnet/preprints/HV_Vir/

(As usual, the paper will be subject to minor modifications or corrections
during the copyediting process).

Abstract:

   A dwarf nova HV Vir was observed photometrically for eight nights
during the outburst in 1992 April --- May.  The star showed two distinct
types of periodic variation: (1) 82.20-min (0.05708 d) double-humped
variation with decaying amplitudes during the early stage of the outburst,
and (2) 83.80-min (0.05820 d) superhumps in later stages.  We attributed
the former to "early superhumps", which are only seen in the earliest
stage of WZ Sge-type outbursts.  The superhump period and evolution of the
superhumps, together with general characteristics of the light curve,
make HV Vir a typical WZ Sge-type dwarf nova.  HV Vir also showed
a large increase of the superhump period during the superoutburst.
Upon the recognition of the WZ Sge-type nature of an object previously
considered as a nova, we present a comprehensive list of candidates
for WZ Sge-type dwarf novae, and related systems.

VSNET Home Page

---

vsnet-adm@kusastro.kyoto-u.ac.jp

VSNET Home Page

Return to Daisaku Nogami

---

vsnet-adm@kusastro.kyoto-u.ac.jp