[IAUC] CBET 2076: 20091215 : NOVA AQUILAE 2009

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                                                  Electronic Telegram No. 2076
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS en CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT en CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html


NOVA AQUILAE 2009
     K. Kinugasa, H. Takahashi, S. Honda, H. Taguchi, and O. Hashimoto, Gunma
Astronomical Observatory (GAO), write that a low-resolution spectrum (range
420-800 nm; resolution 1.0 nm), obtained with the GAO 1.5-m telescope (+
GLOWS) on Dec. 15.4 UT, confirms that the object announced on CBET 2075 is a
nova, showing H_alpha emission (FWHM about 1000 km/s) with a P-Cyg profile,
its absorption minimum being blue-shifted by 1000 km/s with respect to the
emission peak.  H_beta, H_gamma, and Fe II (multiplet 42) lines also have
P-Cyg profiles.
     U. Munari, Istituto Nazionale di Astrofisica, Padova Astronomical
Observatory; and P. Valisa, Asiago Novae and Symbiotic Stars (ANS)
collaboration, report that their spectroscopy (range 390-860 nm, dispersion
0.22 nm/pixel; range 544-704 nm at 0.072 nm/pixel) with the Varese 0.6-m
telescope on Dec. 15.8 UT shows that this object is indeed a nova, of the Fe
II type, with Balmer and Fe II lines in emission and displaying P-Cyg
profiles.  Strong interstellar lines and diffuse interstellar bands suggest
a high reddening.  The absorption component of the Balmer P-Cyg line profiles
has a FWHM of 560 km/s and is displaced by -620 km/s with respect to the
emission component, whose FWHM is 1025 km/s.  Fe II multiplets 42 and 49 are
in emission with P-Cyg profiles, too.  The H_alpha/H_beta flux ratio is 5.7,
and H_alpha has an equivalent width of 0.69 nm.  The continuum is
characterized by the deep absorption lines characteristic of novae close to
their maximum brightness.
     Visual magnitude estimate by K. Hornoch, Ondrejov, Czech Republic:
Dec. 15.700 UT, 10.4.


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                         (C) Copyright 2009 CBAT
2009 December 15                 (CBET 2076)              Daniel W. E. Green