Electronic Telegram No. 3841
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@eps.harvard.edu (alternate cbat@iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


NOVA SCORPII 2014 = TCP J17154683-3128303
     Koichi Nishiyama, Kurume, Japan; and Fujio Kabashima, Miyaki, Japan,
report their discovery of a possible nova (mag 10.1) in Sco on two 40-s
unfiltered CCD frames (limiting magnitude 13.4) taken around Mar. 26.8487 UT
using a 105-mm f/4 camera lens (+ SBIG STL6303E camera).  Eight confirming 1-s
unfiltered CCD frames (limiting mag 16.1) were taken around Mar. 26.8698 using
a Meade 200R 0.40-m f/9.8 reflector (+ SBIG STL1001E camera).  The new object
is located at R.A. = 17h15m46s.83, Decl. = -31d28'30".3 (equinox 2000.0).
Nothing is visible at this position on their two past survey frames taken on
Mar. 22.819 (limiting mag 12.5) and 23.836 (limiting mag 12.9), or on the
Digitized Sky Survey; a cataloged star of magnitude I = 14.2 is located 0".44
away at position end figures 46s.86, 30".5.  The variable was designated TCP
J17154683-3128303 when it was posted at the Central Bureau's TOCP webpage.
Additional magnitudes for the new variable (obtained via CCD unless noted
otherwise):  Mar. 27.653, 11.6 (Rob Kaufman, Bright, Victoria, Australia;
Canon 650D camera + 200-mm-fl. lens; green channel, approximately V band;
limiting mag 14; image visible via website URL http://tinyurl.com/oxlfohn);
Mar. 27.709, R_c = 10.36, I_c = 9.74 (Seiichiro Kiyota, Kamagaya, Japan;
25-cm Schmidt-Cassegrain telescope + Apogee Alta E47 camera; image posted at
URL http://meineko.sakura.ne.jp/ccd/TCP_J17154683-3128303.jpg); 27.729, 11.0
(T. Noguchi, Katori, Chiba-ken, Japan; 0.23-m f/6.3 Schmidt-Cassegrain
reflector; limiting mag 15.5; position end figures 46s.88, 30".4; reference
stars from UCAC4 catalogue; a star of mag 15.8 with position end figures
46s.87, 30".3 is located on a Digitized Sky Survey plate taken on 1992 July
21; image posted at URL http://park8.wakwak.com/~ngc/images/TCPinSco.jpg;
communicated by Syuichi Nakano, Sumoto, Japan); 27.743, I_c = 10.0 (T. Kojima,
Gunma-ken, Japan; 150-mm-f.l. camera lens + Canon digital camera + infrared
filter; notes that a star designated 2MASS 17154687-3128303 with magnitudes
J = 11.26, K = 9.58 is located at this position); 27.758, 11.5 (A. Pearce,
Nedlands, Western Australia; visual); 30.133, B = 13.11, V = 12.27, R_c =
10.83, I_c = 10.30 (U. Munari, Astronomical Observatory of Padova, INAF; and
S. Dallaporta, ANS Collaboration); 30.707, B = 12.9, V = 11.7, R = 11.2
(T. Yusa, Osaki, Japan; remotely using an iTelescope 0.32-m f/9.0
Ritchey-Chretien reflector at Siding Spring; limiting mag 17.5; image posted
at URL http://space.geocities.jp/yusastar77/supernova/PNinSco_140330.htm);
31.143, B = 13.60, V = 12.56, R_c = 11.14, I_c = 10.49 (Munari and
Dallaporta).  Selected magnitudes from J. Hambsch, Mol, Belgium (forwarded
by E. O. Waagen, AAVSO):  Mar. 28.417, B = 12.96; 28.418, V = 11.94;
28.419, I = 9.94; 29.414, B = 13.21; 29.416, V = 12.19; 29.416, I = 10.16;
30.414, B = 13.32; 30.415, V = 12.35; 30.416, I = 10.33; 31.415, B = 13.72,
V = 12.71; 31.416, I = 10.60; Apr. 1.415, B = 14.12, V = 13.05; 1.416, I =
10.89.  Waagen adds that various observations suggest that this may be a
symbiotic nova.

     K. Ayani and S. Maeno, Bisei Astronomical Observatory (BAO), Ibara
Okayama, Japan, obtained a low-resolution spectrogram (range 400-800 nm;
resolution 0.5 nm at H-alpha) of TCP J17154683-3128303 on Mar. 27.8 UT with
the BAO 1-m telescope.  The spectrum shows broad emission lines of the Balmer
series; He I 501.6-, 587.8-, and 706.5-nm; and probably of O I 777.3-nm.
The H-alpha line has a FWHM of 7000 km/s and EW of about 90 nm.  This
indicates that the variable is a nova in early phase.  Their spectrum is
visible via website URL http://tinyurl.com/nw6pv7x.  Ayani adds that
consultation with A. Shafter (San Diego State University) leads them to
agree that this may be one of the relatively rare He/N-type novae.


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

                         (C) Copyright 2014 CBAT
2014 April 2                     (CBET 3841)              Daniel W. E. Green