[IAUC] CBET 4055: 20150125 : SUPERNOVA 2014eb IN UGC 5295 = PSN J09525558+4250511

Sab Ene 24 18:43:19 ART 2015

                                                  Electronic Telegram No. 4055
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)
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Prepared using the Tamkin Foundation Computer Network


SUPERNOVA 2014eb IN UGC 5295 = PSN J09525558+4250511
     L. Cox, D. Post, W. Pattishall, J. Newton, and T. Puckett report the
discovery of an apparent supernova (mag 17.3) on CCD images (limiting mag
19.2) taken with a 0.60-m reflector at Mayhill, NM, U.S.A., on 2014 Dec. 8.473
UT in the course of the Puckett Observatory Supernova Search.  The new object
is located at R.A. = 9h52m55s.58, Decl. = +42o50'51".1 (equinox 2000.0), which
is 13".2 east and 2".4 south of the center of UGC 5295.  The variable was
designated PSN J09525558+4250511 when it was posted at the Central Bureau's
TOCP webpage and is here designated SN 2014eb based on the spectroscopic
confirmation reported below.  The type-II supernova 1989U (cf. IAUCs 4920,
4927) also appeared in UGC 5295.  Additional CCD magnitudes for 2014eb:  2014
Nov. 14, [19.0 (Newton; communicated by Puckett); Dec. 9.466, 17.4 (Post,
0.60-m reflector at Mayhill; communicated by Puckett); 12.447, 18.6 (J.
Brimacombe, Cairns, Australia; remotely using a 43-cm CDK telescope +
STXL-6303 camera at the New Mexico Skies observatory near Mayhill, NM, USA;
position end figures 55s.55, 51".1; image posted at website URL
https://www.flickr.com/photos/43846774@N02/15889823510/); 12.971, 16.9 (D.
Buczynski, Portmahomack, U.K.; 30-cm reflector + SBIG ST7XME camera; position
end figures 55s.58, 51".7; eighteen references stars from UCAC-4 catalogue);
13.03, 17.9 (M. Caimmi, Loreto, Italy; 0.24-m f/6.5 reflector + Atik 314L
camera; fifteen stacked 30-s exposures; position end figures 55s.52, 50".8;
reference stars from UCAC-4 catalogue; image posted at website URL
http://www.oav.name/public/PSN_J09525558+4250511_20141213,03.jpg); 17.925,
17.0 (G. Masi and P. Catalano; remotely using a 43-cm telescope at Ceccano,
Italy; position end figures 55s.62, 50".6).

     S. Benetti, P. Ochner, L. Tomasella, E. Cappellaro, N. Elias-Rosa, A.
Pastorello, L. Tartaglia, G. Terreran, and M. Turatto, Osservatorio
Astronomico di Padova, INAF, report that an optical spectrogram (range 340-800
nm; resolution 1.2 nm) of PSN J09525558+4250511 = SN 2014eb, obtained on 2014
Dec. 12.09 UT with the Asiago 182-cm Copernico Telescope (+ AFOSC) under the
Asiago Transient Classification Program (Tomasella et al. 2014, AN 335, 841),
shows that this is a type-II supernova.  The spectrum shows a blue continuum
with strong H I Balmer lines with P-Cyg profiles, very similar to the type-IIP
supernova 1999em at ten days past explosion (Elmhamdi et al. 2003, MNRAS 338,
939).  Classification was done with GELATO (Harutyunyan et al. 2008, A.Ap.
488, 383) and SNID (Blondin and Tonry 2007, Ap.J. 666, 1024), assuming a
heliocentric radial velocity of 4787 km/s for the host galaxy, UGC 5295 (van
Driel et al. 2001, A.Ap. 378, 370; via NED).  The Asiago classification
spectra are posted at URL http://sngroup.oapd.inaf.it.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
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                         (C) Copyright 2015 CBAT
2015 January 25                  (CBET 4055)              Daniel W. E. Green