Electronic Telegram No. 3825
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 CEPHEI 2014 = TCP J20542386+6017077
     Koichi Nishiyama, Kurume, Japan; and Fujio Kabashima, Miyaki, Japan,
report the discovery of an apparent nova (mag 11.7) in Cepheus on two 40-s
unfiltered CCD frames (limiting magnitude 13.7) taken around Mar. 8.792 UT
using a 105-mm f/4 camera lens (+ SBIG STL6303E camera).  The variable was
confirmed immediately on five 5-s unfiltered CCD frames taken around Mar.
8.7987 UT (limiting magnitude 18.3) using a Meade 200R 0.40-m f/9.8 reflector
(+ SBIG STL1001E camera).  The new object is located at R.A. = 20h54m23s.86,
Decl. = +60d17'07".7 (equinox 2000.0).  The variable was designated TCP
J20542386+6017077 when it was posted at the Central Bureau's TOCP webpage.
     Additional magnitudes for TCP J20542386+6017077, obtained via CCD unless
noted otherwise):  Mar. 3.8405 UT, [13.9 (Nishiyama and Kabashima); 7.781,
12.9 (Nishiyama and Kabashima; pre-discovery; limiting mag 13.8); 8.922, V =
11.90 +/- 0.01 (Arto Oksanen, Hankasalmi, Finland; 0.40-m reflector + SBIG
STL-1001E camera + V filter; position end figures 22s.60, 08".9); 9.161, V =
11.55 +/- 0.02 (Oksanen); 9.199, 11.5 (Patrick Schmeer, Bischmisheim, Germany;
visual); 9.244, B = 12.65, V = 11.62, R_c = 10.76, I_c = 10.02 (Seiichiro
Kiyota, Kamagaya, Japan; remotely using an iTelescope 0.15-m f/7.3 refractor
near Nerpio, Spain; position end figures 23s.75, 06".9; UCAC3 reference stars;
image posted at URL http://meineko.sakura.ne.jp/ccd/TCP_J20542386+6017077.jpg).

     U. Munari, INAF Astronomical Observatory of Padova; and A. Milani, P.
Valisa, F. Castellani, and R. Belligoli, ANS Collaboration, write that the
transient TCP J20542386+6017077 is a classical nova.  On Mar. 9.792 UT, they
obtained a low-resolution spectrogram (range 395-852 nm, 0.21 nm/pixel) with
the Multi Mode Spectrograph attached to the Varese 0.61-m telescope.  The
spectrum shows a red continuum with superimposed strong emission lines from
the Balmer series, O I 777.4- and 844.6-nm, Ca II 849.8-nm, and Fe II
multiplets 42, 48, and 49.  All emission lines shows strong P-Cyg absorptions
that are blue-shifted by 660 km/s for the Balmer lines, 780 km/s for the Fe II
lines, and 900 km/s for the O I lines.  The emission lines have a width of
about 800 km/s.  The intensity of the O I 844.6-nm emission line is about twice
that of O I 777.4-nm, indicating that fluorescent pumping from hydrogen
Lyman-beta is already taking place.  On Mar. 10.094 UT, they obtained with
an "ANS Collaboration" 0.4-m telescope the following photometric magnitudes,
fully reduced for color equations:  B = 13.21, V = 11.94, R_c = 11.04, I_c =
10.13.  The color B-V = +1.27 agrees well with the red slope of the continuum
observed in the low-resolution spectrum.  Overall, the object appears as a
highly reddened "Fe II-type" nova observed close to maximum brightness.


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

                         (C) Copyright 2014 CBAT
2014 March 10                    (CBET 3825)              Daniel W. E. Gree