Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 8447: 2004gm; 2004gg, 2004gh, 2004gi; V574 Pup

The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).

Read IAUC 8446  SEARCH Read IAUC 8448

View IAUC 8447 in .dvi, .ps or .PDF format.
IAUC number

                                                  Circular No. 8447
Central Bureau for Astronomical Telegrams
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)

SUPERNOVA 2004gm IN MCG -02-33-80
     Further to IAUC 8445, J. Burket and W. Li report the LOSS
discovery of an apparent supernova (mag 15.9) on an unfiltered KAIT
image taken on Nov. 30.55 UT.  The new object, designated SN 2004gm,
is located at R.A. = 12h59m40s.53, Decl. = -14o58'02".4 (equinox
2000.0), which is 9".8 east and 0".4 south of the center of MCG
-02-33-80; nothing was visible at this position on an image taken
on June 5.21 (limiting mag 19.5).
     T. Matheson, National Optical Astronomy Observatory; and P.
Challis, A. Garg, M. Modjaz, and R. Kirshner, Harvard-Smithsonian
Center for Astrophysics, report that a spectrum (range 420-970 nm)
of SN 2004gm, obtained by Garg and Kirshner on Dec. 1.34 UT with
the Magellan Baade 6.5-m telescope (+ IMACS spectrograph), shows it
to be a type-Ia supernova, several weeks past maximum.

SUPERNOVAE 2004gg, 2004gh, 2004gi
     G. Folatelli, M. Hamuy, N. Morrell, and M. Phillips, Carnegie
Supernova Project, report that CCD spectra (range 360-900 nm) of SN
2004gg, SN 2004gh, and SN 2004gi (IAUC 8444) were obtained by M.
Roth on Nov. 25 and 26 UT, using the Magellan II (Clay) telescope
(+ LDSS-2 spectrograph) at Las Campanas Observatory.  The spectrum
of 2004gg closely resembles that of the peculiar type-II SN 1987K,
approximately 1 week after maximum light.  SN 2004gh is a type-II
supernova, about 1 month after explosion, showing a prominent
H_alpha P-Cyg profile and an expansion velocity of 4000 km/s, as
inferred from the absorption minimum of H_beta and assuming the
recession velocity of the host galaxy to be 3662 km/s, as given in
the NED database.  The spectrum of SN 2004gi is that of a type-Ia
supernova, about 25 days after maximum light.

     N. M. Ashok and D. P. K. Banerjee, Physical Research
Laboratory, Ahmedabad, report that near-infrared JHK spectroscopy
(range 1.08-2.35 microns) of V574 Pup, taken on Nov. 26.98 UT with
the Mt. Abu 1.2-m telescope (+ PRL Near-Infrared Imaging
Spectrometer), shows strong H I emission lines of Paschen_beta,
Paschen_gamma, Brackett_gamma, and Brackett 11 to 17.  Prominent O
I lines at 1.1288 and 1.3166 microns are seen, as are a blend of N
I and C I lines in the region around 1.175 and 1.25 microns.

                      (C) Copyright 2004 CBAT
2004 December 2                (8447)            Daniel W. E. Green

Read IAUC 8446  SEARCH Read IAUC 8448

View IAUC 8447 in .dvi, .ps or .PDF format.

Our Web policy. Index to the CBAT/MPC/ICQ pages.

Valid HTML 4.01!