[IAUC] CBET 2702: 20110420 : SUPERNOVA 2011br IN NGC 5881 = PSN J15062020+6259006
quai en eps.harvard.edu
quai en eps.harvard.edu
Mie Sep 14 16:18:57 ART 2011
Electronic Telegram No. 2702
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 2011br IN NGC 5881 = PSN J15062020+6259006
Further to CBET 2678, M. Mason, K. Lin, S. B. Cenko, W. Li, and A. V.
Filippenko report the LOSS discovery of an apparent supernova on unfiltered
KAIT images:
SN 2011 UT R.A. (2000.0) Decl. Mag. Offset
2011br Apr. 9.50 15 06 20.20 +62 59 00.6 18.2 5".2 W, 10".0 S
This variable was designated PSN J15062020+6259006 when posted on the Central
Bureau's TOCP webpage and is here designated SN 2011br based on the
spectroscopic report below. Additional CCD magnitudes for 2011br: Mar. 10.54
UT, [19.3 (KAIT); Apr. 10.48, 18.4 (KAIT); 11.133, 18.2 (Joseph Brimacombe,
Cairns, Australia; remotely using a 51-cm RCOS telescope + STL11K camera + red
filter at New Mexico Skies Observatory, Mayhill, NM, U.S.A.; position end
figures 20s.17, 00".6); 17.245, 17.8 (Brimacombe). Brimacombe's Apr. 11 image
is posted at http://www.flickr.com/photos/43846774@N02/5610004688/; his image
from Apr. 17 is posted at http://www.flickr.com/photos/43846774@N02/5629808506/.
J. M. Silverman and A. V. Filippenko, University of California,Berkeley,
report that inspection of a fairly noisy CCD spectrum (range 340-1000 nm),
obtained by A. Sonnenfeld (University of California, Santa Barbara) on Apr. 15
UT with the 3-m Shane reflector (+ Kast) at Lick Observatory, shows that PSN
J15062020+6259006 = SN 2011br is likely a type-Ib supernova. The host galaxy
is at a redshift of 0.0221 (calculated from narrow emission lines in the
spectrum).
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2011 CBAT
2011 April 20 (CBET 2702) Daniel W. E. Green
Más información sobre la lista de distribución Iauc