[IAUC] CBET 2844: 20110929 : VARIABLE STAR IN LYRA: PSN J19234877+3450324

[quai en eps.harvard.edu]

                                                  Electronic Telegram No. 2844
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director:  Daniel W. E. Green; Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbatiau en eps.harvard.edu (alternate cbat en iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


VARIABLE STAR IN LYRA:  PSN J19234877+3450324
     Further to CBET 2772, P. Blanchard, M. Kandrashoff, S. B. Cenko, W. Li,
and A. V. Filippenko reported the LOSS discovery on Sept. 2.25 UT of a
possible supernova (mag 16.1) located 13" west and 176" north of the center
of UGC 11433 on unfiltered KAIT images, with the position given as R.A. =
19h23m48s.77, Decl. = +34d50'32".4 (equinox 2000.0).  This object was
designated PSN J19234877+3450324 when it was posted on the Central Bureau's
TOCP webpage.  Additional unfiltered CCD magnitudes for PSN J19234877+3450324:
Sep. 1.25, [18.7 (KAIT); 3.24, 15.7 (KAIT); 4.139, 16.7 (R. A. Koff, Bennett,
CO, USA; Meade 0.25-m f/10 Schmidt-Cassegrain reflector + Apogee AP-47p CCD
camera; image scale 2"/pixel; limiting mag 18.8; position end figures 48s.75,
31".7; UCAC3 reference stars); 6.241, 17.0 (J. Brimacombe, Cairns, Australia;
position end figures 48s.78, 31".7).  Koff's image is posted at website URL
http://antelopehillsobservatory.org/SNpictures/PSNJ19234877+3450324final.jpg;
he ran a time series of observations from during Sept. 4.125-4.333, yielding
some evidence of periodic behavior; his lightcurve is posted at website URL
http://antelopehillsobservatory.org/SNpictures/PSNJ19234877+3450324LC.jpg.
Brimacombe's image is posted at the following website URL:
http://www.flickr.com/photos/43846774@N02/6122931006/.

     J. M. Silverman, S. B. Cenko and A. V. Filippenko, University of
California, Berkeley, report that inspection of a CCD spectrum (range 340-1000
nm), obtained on Sept. 26 UT with the 10-m Keck I telescope (+ LRIS), shows
that PSN J19234877+3450324 is a Galactic variable star with a few narrow
absorption features superposed on a relatively smooth continuum.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2011 CBAT
2011 September 29                (CBET 2844)              Daniel W. E. Green