NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-03-19 T17:52:15 PDT
Help | Comment | NED Home

For refcode 2011CBET.2722A...1N:
Retrieve 2 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by Central Bureau for Astronomical Telegrams. 2011CBET.2722A...1N Electronic Telegram No. 2722 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION SUPERNOVA 2011ck IN NGC 5425 = PSN J14004624+4826454 J. Newton and T. Puckett report the discovery of an apparent supernova (mag 15.9) on an unfiltered CCD image (limiting mag 18.9) taken with a 0.35-m reflector at Portal, AZ, U.S.A., on May 12.291 UT in the course of the Puckett Observatory Supernova Search. The new object (which was designated PSN J14004624+4826454 when posted on the Central Bureau's TOCP webpage and is here designated SN 2011ck based on the spectroscopic report below) is located at R.A. = 14h00m46.24, Decl. = +48o26'45".4 (equinox 2000.0), which is 14".8 west and 7".3 north of the center of NGC 5425. Additional approximate unfiltered CCD magnitudes for 2011ck: 1989 Mar. 26, [19.5 (red Digitized Sky Survey image; via Zhangwei Jin, Ningbo, Zhejiang, China; and Xing Gao, Urumqi, Xinjiang, China); 2010 Mar. 11, [19.1 (Puckett); 2011 Apr. 24, [19.0 (Jin and Gao; 0.35-m reflector at Mt. Nanshan); Apr. 27, [17.5 (Jin and Gao); May 13.294, 15.9 (Puckett); 13.844, 16.6 (Jin and Gao; limiting mag about 19.5; independent discovery; reported after Puckett's TOCP posting; position end figures 46s.32, 46".4; offset 16" west, 8" north from the center of NGC 5425); 14.354, 17.2 (Joseph Brimacombe, Cairns, Australia; remotely using a 51-cm RCOS telescope + STL11K camera at New Mexico Skies Observatory, Mayhill, NM, U.S.A.; position end figures 46s.30, 45".6). Jin and Gao have posted an image of 2011ck at website URL http://www.xjltp.com/XOSS/XM21ZJ/XM21ZJ.htm. Brimacombe has posted his image at the following website URL: http://www.flickr.com/photos/43846774@N02/5721977398/. G. H. Marion, Harvard-Smithsonian Center for Astrophysics (CfA) and University of Texas; J. Vinko, University of Szeged; and J. C. Wheeler, University of Texas, report that a spectrum (range 430-1000 nm) of PSN J14004624+4826454 = SN 2011ck was obtained by S. Odewahn on May 17 UT with the 9.2-m Hobby-Eberly Telescope (+ Marcario Low-Resolution Spectrograph). Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows that the object is a type-IIP supernova at two to three weeks after the explosion. The redshift is estimated to be z = 0.0065, measured from host- galaxy emission lines. The centroid of the emission component of the H-alpha feature is blueshifted by about 4000 km/s, and it is much stronger than the absorption component. The velocity of the H-alpha feature, measured at the absorption minimum, is estimated to be approximately 16000 km/s. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2011 CBAT 2011 May 19 (CBET 2722) Daniel W. E. Green
Retrieve 2 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home