[vsnet-alert 10880] Re: possible new cataclysmic variable in Ursa Major

Jeremy Shears bunburyobservatory at hotmail.com
Sun Jan 4 05:55:59 JST 2009


Dear Yamaoka-san,
 
I can confirm there is a star in the position you indicated:
 
2009 Jan 3.863  14. 8C
 
the comparison I used was GSC 3438-208 (14.05).
Takahashi FS102 fluorite refractor with Starlight Xpress SXV-M7 unfiltered CCD.
 
I will continue to monitor this star, but the conditions are poor.
 
Jeremy Shears,
Cheshire, UK> Date: Sat, 3 Jan 2009 16:22:13 +0900> From: yamaoka at rc.kyushu-u.ac.jp> To: vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp> Subject: [vsnet-alert 10879] possible new cataclysmic variable in Ursa Major> > Subject: possible new cataclysmic variable in Ursa Major> > Dear all,> > I have reported a detection of possible outburst of new cataclysmic> variable to the CBAT. If you confirm the brightening, or its> modulation, please report it to the CBAT as well as vsnet.> > " K. Itagaki, Yamagata, Japan, reports his discovery of a new> variable star on a wide-field survey CCD image taken on Jan. 2.727 UT > with a 0.21-m f/3 reflector. Confirming CCD images taken on Jan.> 2.749 UT with a 0.30-m f/7.8 reflector show the variable's magnitude> to be about 14.9 and its position to be R.A. = 10h26m37.04s, Decl. => +47d54'26".3 (equinox 2000.0). The star was fainter than mag 16.5 on his> survey image taken on 2008 Jan. 31.627. SDSS J102637.04+475426.3, a> faint blue star (umag=20.182, gmag=20.084, rmag=20.116, imag=20.201,> zmag=19.855), has identical position with the reported object.> Outburst amplitude and a color on its quiesient phase suggest that it> is possibly a dwarf nova caught in outburst. "> > --> Hitoshi Yamaoka> yamaoka @ phys.kyushu-u.ac.jp <- changed
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