[IAUC] CBET 2633: 20110113 : VARIABLE STAR IN ORION: TCP J06195996+1926590

Mie Sep 14 16:19:10 ART 2011

                                                  Electronic Telegram No. 2633
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 ORION:  TCP J06195996+1926590
     Seiichi Yoshida, Yokohama, Kanagawa, Japan, reports that he found a new
variable star (mag 14.3-14.4) on CCD images (limiting mag 16.2) taken by
Youichirou Nakashima (Setouchi, Okayama, Japan) on Jan. 8.597 UT in the course
of the MISAO Project with a 0.25-m f/4.2 Wright-Schmidt reflector (+ SBIG
ST-1001E camera).  The new object, which was posted on the Central Bureau's
new "Transient Objects Confirmation Page" with provisional designation TCP
J06195996+1926590, is located at R.A. = 6h19m59s.96, Decl. = +19o26'59".0
(equinox 2000.0).  Nothing is visible at this position on unfiltered CCD
images taken by Nakashima on 2010 Nov. 29.77 (limiting mag 16.3-16.4) or by
Nobuo Ohkura on 2000 Feb. 27 (0.16-m f/3.8 Wright-Schmidt reflector + SBIG
ST-8 ABG camera; limiting mag 16.1), and nothing is present on a Digitized
Sky Survey (DSS) infrared image from 1994 Nov. 27; however, a faint star is
visible at this position on the DSS blue image from 1996 Feb. 14.15 UT, and
a hint of this object maybe be present on a DSS red image from 1996 Oct. 9.
Yoshida has posted Nov. 29 and Jan. 8 images at the following website URL:
http://www.aerith.net/pub/MPRE2011-0001.jpg.  Yoshida forwards the following
magnitudes for the variable obtained by Nick James (Chelmsford, U.K.) on
Jan. 9.800:  V = 14.38, R_c = 14.36, I_c = 14.53.  Yoshida adds that
Ken-ichi Kadota found that a star in the USNO-B1.0 catalogue (blue mag
20.4-20.5) has position end figures 59s.9113, 59".210.  Yoshida also notes
that Brian Skiff (Lowell Observatory) finds the variable to be only 0".1
from the the GSC-2.3-catalogue position for the blue star, which has position
end figures 59s.93, 58".8 (from a IIIa-J plate at epoch 1996.112); a
SuperCOSMOS scan of the same plate shows the identical coordinates and blue
magnitude 20.56.

     Gianluca Masi, Ceccano, Italy, writes that an unfiltered CCD image
obtained remotely using a 35.6-cm telescope as part of the Virtual Telescope
Project (image scale 0".62/pixel) yields position end figures 59s.93, 58".7
(mean residuals 0".2, based on 182 reference stars from NOMAD) and red
magnitude 14.1 for the variable star on Jan. 9.768 UT.

     H. Sato reports the following magnitudes for the variable, obtained on
Jan. 10.109 UT remotely with a 0.30-m f/9.2 Cassegrain reflector located at
the RAS Observatory near Mayhill, NM, U.S.A.:  B = 14.48, V = 14.49, R_c =
14.57, I_c = 14.62.

     After posting on the Central Bureau's TOCP, D. D. Balam, Dominion
Astrophysical Observatory, National Research Council of Canada (NRCC); M. L.
Graham, Las Cumbres Observatory Global Telescope, University of California at
Santa Barbara; and E. Y. Hsiao, Lawrence Berkeley Laboratory, report that a
spectrogram (range 385-694 nm, resolution 0.3 nm) of TCP J06195996+1926590,
obtained on Jan. 10.267 UT with the 1.82-m Plaskett Telescope of the NRCC,
exhibits a strong blue continuum showing very broad (FWHM = 4.2 nm at H-beta)
Balmer series absorption lines.  The H-alpha line appears to be filled in by
emission.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
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                         (C) Copyright 2011 CBAT
2011 January 13                  (CBET 2633)              Daniel W. E. Green