[IAUC] CBET 2058: 20091129 : NOVA IN M31: M31N 2009-11d

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                                                  Electronic Telegram No. 2058
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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NOVA IN M31:  M31N 2009-11d
     Independent discoveries of an apparent nova in M31 have been received
from two diffferent groups.  Koichi Nishiyama, Kurume, Fukuoka-ken, Japan;
and Fujio Kabashima, Miyaki-cho, Saga-ken, Japan, found 2009-11d on seven
40-s unfiltered CCD frames (limiting magnitude 19.8) taken around Nov. 19.488
UT using a 0.40-m f/9.8 reflector.  The new object is located at R.A. =
0h44m16s.87, Decl. = +41o18'53".5 (equinox 2000.0), which is 1043" east and
165" north of the center of M31.  Nothing is visible at this position on
their past frames taken on Nov. 6.526 (limiting mag 19.0) and 17.616 (limiting
mag 19.6) or on the Digitized Sky Survey (red and infrared plates; no dates
or limiting magnitudes provided).
     P. Podigachoski, W. Pietsch, M. Henze, and V. Burwitz, Max-Planck-Institut
fuer Extraterrestrische Physik; A. Updike, Clemson University; P. Milne and G.
Williams, University of Arizona; and D. H. Hartmann, Clemson University, found
the object at red mag 18.1 on a stacked R-band CCD image composed of twelve
60-s frames obtained on Nov. 19.194 UT with the robotic 60-cm telescope of the
Livermore Optical Transient Imaging System (Super-LOTIS; located at Steward
Observatory, Kitt Peak).  The new object is clearly visible on the individual
images, at position end figures 16s.85, 53".6 (uncertainty 0".3), with offset
1043" east and 165" north.  No object is visible at the position of 2009-11d
on a Super-LOTIS image from Nov. 18.19 (limiting R magnitude 19.5).
     K. Hornoch, Astronomical Institute, Ondrejov, Czech Republic; and O.
Pejcha, Department of Astronomy, Ohio State University, report low-resolution
optical spectroscopy (range 380-720 nm, resolution 0.7 nm) and optical
photometry of M31N 2009-11d.  Spectra were obtained using the Boller & Chivens
CCD Spectrograph on the 2.4-m Hiltner telescope at MDM Observatory.
Magnitude measurements were obtained from images taken with RETROCAM on the
2.4-m Hiltner telescope and with the 0.65-m telescope (+ G2CCD-3200) at
Ondrejov.  The spectrum of M31N 2009-11d obtained by Pejcha on Nov. 21.31 UT
(only 2.1 days after its first optical detection made by Pietsch et al.)
shows Balmer lines with P-Cyg profiles.  One day later, on Nov. 22.21, the
Balmer lines showed only an emission component, and Fe II emission lines
emerged, confirming this object as a "Fe II"-class nova near maximum light.
The HWZI of H-alpha was about 2500 km/s.  Magnitudes for 2009-11d:
Nov. 21.285, r' = 16.43 +/- 0.08 (Pejcha and Hornoch, 2.4-m telescope + Sloan
r' filter); 21.287, g' = 16.53 +/- 0.10 (Pejcha and Hornoch, 2.4-m telescope
+ Sloan g' filter); 21.799, R = 17.26 +/- 0.10 (Hornoch and P. Kusnirak,
0.65-m Ondrejov telescope); 23.060, R = 17.3 +/- 0.2 (Hornoch).  Hornoch
also reports position end figures 16s.88, 53".6 for M31N 2009-11d.


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                         (C) Copyright 2009 CBAT
2009 November 29                 (CBET 2058)              Daniel W. E. Green