[IAUC] CBET 3033: 20120227 : SUPERNOVA 2012al = PSN J10061161+4717406

[quai en eps.harvard.edu]

                                                  Electronic Telegram No. 3033
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 2012al = PSN J10061161+4717406
     A. J. Drake, R. Williams, S. G. Djorgovski, M. J. Graham, and A. Mahabal,
California Institute of Technology; J. L. Prieto, Princeton University; M.
Catelan, Pontificia Universidad Catolica de Chile; R. H. McNaught, Australian
National University; E. C. Beshore and S. M. Larson, Lunar and Planetary
Laboratory, University of Arizona; and E. Christensen, Gemini Observatory,
report the discovery of an apparent supernova in images from the Catalina
Sky Survey (CSS).

 SN       2012 UT        R.A. (2000.0) Decl.      Mag.      Offset
 2012al   Feb. 24.33   10 06 11.61  +47 17 40.6   18.1    1".6 E, 1".4 S

The variable was designated PSN J10061161+4717406 when it was posted at the
Central Bureau's TOCP webpage and is here designated SN 2012al based on the
spectroscopic confirmation reported below.  Additional CCD magnitudes for
2012al (unfiltered unless noted otherwise):  Feb. 1.40 UT, [19.5 (CSS);
25.170, 17.1 (Joseph Brimacombe, Cairns, Australia; remotely using a 51-cm
RCOS telescope + STL11K camera + luminance filter at the New Mexico Skies
Observatory near Mayhill, NM, U.S.A.; position end figures 11s.63, 40".4;
image posted at URL http://www.flickr.com/photos/43846774@N02/6930060183/);
25.506, 17.3 (L. Elenin, Lyubertsy, Russia; and I. Molotov, Moscow, Russia;
images taken remotely with a 0.45-m f/2.8 telescope at the ISON-NM Observatory
near Mayhill; position end figures 11s.66 +/- 0".2, 40".5 +/- 0".2; NOMAD
reference stars; limiting mag about 19.1); 25.909, R = 17.5 (Federica Luppi,
Varese, Italy; 0.36-m f/7.9 reflector + Bessell R filter; position end figures
11s.65, 41".3; reference stars from CMC-14 catalogue; image posted at website
URL http://www.astrogeo.va.it/pub/TOCP/PSN_J10061161+4717406.jpg).

     L. Tomasella, S. Benetti, A. Pastorello, and S. Valenti, Istituto
Nazionale di Astrofisica, Osservatorio Astronomico di Padova, report that a
spectrogram of PSN J10061161+4717406 = SN 2012al, obtained on Feb. 25.90 UT
with the 1.82-m Copernico Telescope (+ AFOSC; range 340-790 nm, resolution 2.4
nm) indicates that it is a type-IIn supernova at a redshift of z about 0.04.
Prominent hydrogen Balmer lines are visible in emission, with a FWHM velocity
of 2000-2500 km/s.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2012 CBAT
2012 February 27                 (CBET 3033)              Daniel W. E. Green