(cba:news) [Fwd: CBET 1225: 20080125 : POSSIBLE DWARF NOVA IN HYDRA]
jop at astro.columbia.edu
Fri Jan 25 14:54:46 EST 2008
Here's the CBET message on the "other" dwarf nova - the *candidate*
dwarf nova in hydra. Like the certain (because of the just-discovered
superhumps) dwarf nova freshly found in Canis Minor, it's a WZ Sge
candidate because of the large amplitude... This makes it of great
interest to us.
Can someone post a chart of it to cba-news? Some CBAers are having
trouble identifying it... and sitting here in New York City, I'm not the
best qualified to do it!
-------- Original Message --------
Subject: CBET 1225: 20080125 : POSSIBLE DWARF NOVA IN HYDRA
Date: Fri, 25 Jan 2008 12:03:09 -0500 (EST)
From: IAUC mailing list <quai at cfa.harvard.edu>
To: iauc at libraries.cul.columbia.edu
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS at CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT at CFA.HARVARD.EDU (science)
POSSIBLE DWARF NOVA IN HYDRA
H. Yamaoka, Kyushu University, reports that K. Itagaki (Yamagata,
has discovered a variable star (mag 13.3) on unfiltered CCD images obtained
with a 0.21-m reflector on Jan. 19.592 UT, the "new" object located at R.A.
= 8h45m55s.08, Decl. = +3o39'29".7 (equinox 2000.0; photometry and
apparently measured from an image obtained with a 0.30-m reflector).
is visible at this position on an image taken by Itagaki on 2007 Oct. 17
(limiting mag 17.5). An image on Jan. 25.516 by Itagaki shows that the star
had faded to mag about 14.2. The USNO-B1.0 and GSC 2.3.2 catalogues
faint (mag about 20.0) star within 1" of the reported position. H. Maehara,
Kyoto University, reports (via VSNET) that this variable star shows a
small-amplitude (about 0.1 mag) modulation. A. Henden, AAVSO, notes (AAVSO
Special Notice 94) that the star is likely to be a WZ Sge-subclass variable.
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2008 CBAT
2008 January 25 (CBET 1225) Daniel W. E. Green
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