NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-21 T07:50:42 PDT
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For refcode 2013CBET.3550A...1G:
Retrieve 2 NED objects in this reference.
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NED Abstract

Copyright by Central Bureau for Astronomical Telegrams. 2013CBET.3550A...1G Electronic Telegram No. 3550 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION Gagliano, R.; Newton, J.; Puckett, T.; Drout, M. R.; Lunnan, R.; Berger, E. SUPERNOVA 2013db IN NGC 3808 = PSN J11404399+2225549 R. Gagliano, J. Newton, and T. Puckett report the discovery of an apparent supernova (mag 17.1) on unfiltered CCD images (limiting mag 19.0) taken with a 0.40-m reflector at Portal, AZ, U.S.A., on May 29.151 UT in the course of the Puckett Observatory Supernova Search. The new object is located at R.A. = 11h40m43s.99, Decl. = +22o25'54".9 (equinox 2000.0), which is 3".9 west and 9".2 north of the center of NGC 3808. A finding image is located at website URL http://www.possdata.com/PSNJ11404399+2225549.jpg. The variable was designated PSN J11404399+2225549 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2013db based on the spectroscopic confirmation reported below. Additional CCD magnitudes for 2013db: Mar. 21, [19.1 (Puckett); May 30.132, 17.1 (Puckett; limiting mag 19.1; 0.40-m reflector at Portal); 30.292, 17.0 (Joseph Brimacombe, Cairns, Australia; remotely with a 51-cm telescope + luminance filter located near Mayhill, NM, U.S.A.; position end figures 44s.04, 54".9; image posted at website URL http://www.flickr.com/photos/43846774@N02/8897847606/). M. R. Drout, R. Lunnan, and E. Berger, Harvard University, obtained a low-resolution spectum of PSN J11404399+2225549 = SN 2013db on June 6.15 UT with the Blue Channel spectrograph mounted on 6.5-m MMT at Mount Hopkins. Strong hydrogen Balmer P-Cyg lines are present in the spectrum, indicating that 2013db is a type-II supernova. Comparison with a library of supernova spectra using the "Supernova Identification" tool (SNID; Blondin and Tonry 2007, Ap.J. 1024, 666) provides a good match with type-IIP supernovae near maximum light. After correcting for the host galaxy (NGC 3808) redshift of z = 0.023726 (White et al. 1983, MNRAS 203, 701; via NED), the velocity of the minimum of the H_alpha feature is estimated to be approximately 14500 km/s. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2013 CBAT 2013 June 9 (CBET 3550) Daniel W. E. Green
Retrieve 2 NED objects in this reference.
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