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IAUC 8484: N Cyg 2005; 2005af; 2005ag; 2004ht-2004io; C/2004 Q2

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IAUC number 

                                                  Circular No. 8484
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


NOVA CYGNI 2005
     H. Naito and N. Tokimasa, Nishi-Harima Astronomical
Observatory (NHAO); and H. Yamaoka, Kyushu University, report:  "A
low-resolution spectrum (range 400-850 nm, resolution 150) of the
possible nova reported on IAUC 8483, obtained on Feb. 11.8 UT with
the NHAO 0.60-m telescope, shows prominent and broad Balmer lines
in emission, which suggests that it is indeed a classical nova.
The FWHM of the H_alpha line is 3200 km/s.  The nearest object in
the Digitized Sky Survey images is a star (mag about 18) located
2".5 west-southwest of the reported position."


SUPERNOVA 2005af IN NGC 4945
     A. V. Filippenko and R. J. Foley, University of California,
Berkeley, report that inspection of CCD spectra (range 300-920 nm),
obtained on Feb. 12 UT with the Keck I 10-m telescope (+ LRIS),
shows that the possible supernova in NGC 4945 reported on IAUC 8482
is a supernova of type II, with well-developed P-Cyg profiles of H,
Fe II, Ca II, and other species.  The general appearance of the
spectrum suggests the II-plateau subclass, perhaps 1 month after
the explosion.


SUPERNOVA 2005ag
     Further to IAUC 8478, W. Li reports the LOSS discovery of a
supernova (mag 18.2) on a KAIT CCD image taken on Feb. 10.55 UT; SN
2005ag is located at R.A. = 14h56m43s.65, Decl. = +9o19'42".5
(equinox 2000.0), which is 6".5 east and 5".9 north of the center
of the apparent host galaxy.  Filippenko and Foley add that
inspection of noisy CCD spectra, obtained as above, shows that
2005ag is a supernova of type Ia, probably within a week of maximum
brightness; the redshift of the host galaxy was not measured.


SUPERNOVAE 2004ht-2004io
     Further to IAUC 8481, the additional co-authors should be
added:  J. Estrada and J. Marriner, Fermilab; A. Becker and G.
Miknaitis, University of Washington; and J. Kaplan and R. Romani,
Stanford University.


COMET C/2004 Q2 (MACHHOLZ)
     Corrigendum.  On IAUC 8480, lines 8-9, the data for Jan.
15.6344 should read as follows:  fan 1, 150" in p.a. 282 deg; fan
2, 150" in p.a. 239 deg; fan 3, 30" in p.a. 211 deg.

                      (C) Copyright 2005 CBAT
2005 February 12               (8484)            Daniel W. E. Green

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