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IAUC 8650: C/2005 V2-V9; 2005md, 2005mf

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IAUC number 

                                                  Circular No. 8650
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)


COMETS C/2005 V2-V9 (SOHO)
     Additional near-sun comets have been found on SOHO website
images (cf. IAUC 8648), all being Kreutz sungrazers except for
C/2005 V8 (which is not a member of a known group).  C/2005 V2 was
very faint and diffuse.  C/2005 V3 was tiny, stellar in appearance,
and very faint.  C/2005 V4 was small and stellar in appearance in
C3 images, and stellar with a hint of tail in C2 images, reaching
mag 7.6 at 6.2 solar radii on Nov. 5.004 UT.  C/2005 V5 was
extremely faint and diffuse.  C/2005 V6 was bright and stellar in
appearance with no tail in C3 images, reaching mag 6.5 at 10.5
solar radii on Nov. 8.929; in C2 images, the comet showed a very
faint tail reaching a length of about 7' at 5.1 solar radii on Nov.
9.271.  C/2005 V7, a companion to C/2005 V6, was very faint and
elongated.  C/2005 V8 was extremely faint, very small, and stellar
in appearance.  C/2005 V9 appeared abruptly at about 22 solar radii
and brightened rapidly to 4th magnitude (reaching mag 3.9 at 11.1
solar radii on Nov. 14.221 in C3 images), developing a long, thin
tail that reached a length of 40' on Nov. 14.704 at 4.6 solar radii
in C2 images.

 Comet        2005 UT       R.A.(2000)Decl.   Inst.  F    MPEC
 C/2005 V2    Nov.  2.629  14 27.4   -16 14   C2     HS   2005-Y02
 C/2005 V3          3.979  14 32.5   -16 32   C2     HS   2005-Y02
 C/2005 V4          4.488  14 25.7   -17 57   C3/2   TS   2005-Y03
 C/2005 V5          7.788  14 49.0   -17 55   C2     RM   2005-Y03
 C/2005 V6          8.346  14 37.6   -20 00   C3/2   HS   2005-Y03
 C/2005 V7          9.314  14 54.4   -18 18   C2     HS   2005-Y03
 C/2005 V8          9.604  15 08.6   -16 26   C2     HS   2005-Y07
 C/2005 V9         13.488  15 01.7   -22 53   C3/2   HS   2005-Y07


SUPERNOVAE 2005md AND 2005mf
     M. Modjaz, R. Kirshner, P. Challis, and S. Blondin, Harvard-
Smithsonian Center for Astrophysics, report that a spectrogram
(range 350-740 nm) of SN 2005md (cf. IAUC 8647), obtained by P.
Berlind on Dec. 28.31 UT, shows it to be most probably a young
type-II supernova.  The spectrum consists of a featureless, blue
continuum and is similar to an early spectrum of SN 1993J (Matheson
et al. 2000, A.J. 120, 1487).  A spectrum of SN 2005mf (cf. IAUC
8648), obtained by Berlind on Dec. 28.40, shows it to be a
supernova of type Ic.  The spectrum is similar to spectra of SN
1994I (Filippenko et al. 1995, Ap.J. 450, L11) taken a few days
before maximum.

                      (C) Copyright 2005 CBAT
2005 December 29               (8650)            Daniel W. E. Green

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