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[vsnet-chat 5015] KUV 01584-0939: HeCV with a Porb 10 min

KUV 01584-0939: HeCV with a Porb 10 min

Dear Colleagues,

   We have been advised by Brian Warner and Patrick A. Woudt that
KUV 01584-0939 is an AM CVn-type cataclysmic variable with the shortest
period.  Please monitor the object for future activity.

020052.0 -092432 (2000.0) KUV01584-0939 16.8 -2.5 
020052.8 -092434 (2000.0) 1RXS-F_J020052.9-092435 0.017 -0.27 1.00

   In referring to the V407 Vul article in vsnet-campaign, Brian Warner
advised as follows:

>    On the other hand, the star Cet3 (in the Downes et al catalogue)
> is at 16.9 mag and also has an orbital period near 10 mins, with a
> (probably superhump) amplitude of about 0.15 mag. The observed period
> is 620.26 secs.   It is a He-transferring CV (i.e. an AM CVn star). A
> discovery paper (by Patrick Woudt and myself) will appear on PASP
> Rapid Release Research Papers, [...]

[Please use the designation KUV01584-0939 in future reporting, and
avoid "Cet3", which nomenclature system introduced by Downes et al. is
regarded as obsolete (see the catalog explanation in Downes et al.)]

   See the following reference for more details:

Paper: astro-ph/0201191
From: Patrick Woudt <pwoudt@artemisia.ast.uct.ac.za>
Date: Sat, 12 Jan 2002 09:30:39 GMT   (145kb)

Title: KUV 01584-0939: A Helium-transferring Cataclysmic Variable with an
  Orbital Period of 10 Minutes
Authors: Brian Warner (Univ. of Cape Town) and Patrick A. Woudt (Univ. of Cape
  Town)
Comments: Published by PASP. See also the latest Early-Release Research Paper
  website of the PASP
\\
  High speed photometry of KUV 01584-0939 (alias Cet3) shows that is has a
period of 620.26 s. Combined with its hydrogen-deficient spectrum, this implies
that it is an AM CVn star. The optical modulation is probably a superhump, in
which case the orbital period will be slightly shorter than what we have
observed.
\\ ( http://arXiv.org/abs/astro-ph/0201191 ,  145kb)

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