[IAUC] CBET 3317: 20121127 : SUPERNOVA 2012gz
quai en eps.harvard.edu
quai en eps.harvard.edu
Lun Nov 26 21:54:23 ART 2012
Electronic Telegram No. 3317
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director: Daniel W. E. Green; Hoffman Lab 209; Harvard University;
20 Oxford St.; Cambridge, MA 02138; U.S.A.
e-mail: cbatiau en eps.harvard.edu (alternate cbat en iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network
SUPERNOVA 2012gz
A. J. Drake, S. G. Djorgovski, M. J. Graham, A. Mahabal, and R. Williams,
California Institute of Technology; J. L. Prieto, Princeton University; M.
Catelan, Pontificia Universidad Catolica de Chile; and S. M. Larson and E.
Christensen, Lunar and Planetary Laboratory, University of Arizona, report
the discovery of an apparent supernova in unfiltered Catalina Sky Survey (CSS)
images:
SN 2012 UT R.A. (2000.0) Decl. Mag. Offset
2012gz Nov. 20.25 2 50 17.61 +32 24 39.9 17.2 1" S
Nothing was visible at this position on a CSS image from Nov. 4.25 UT
(limiting mag 20.5).
T.-W. Chen, R. Kotak, and M. Fraser, Queen's University, Belfast, report
that a spectrogram (range 330-975 nm; resolution about 1000) of SN 2012gz was
obtained on Nov. 22.16 UT with the 4.2-m William Herschel Telescope (+ ISIS).
Cross-correlation with a library of supernova spectra via the "Supernova
Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows
that 2012gz matches a number of normal type-Ia supernovae such as SN 2004eo
and SN 2003cg about a week before maximum light at a redshift of z = 0.03.
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2012 CBAT
2012 November 27 (CBET 3317) Daniel W. E. Green
Más información sobre la lista de distribución Iauc