Classification certificate for object 2011dz
TNS Classification Report No. 2092 [ 2018TNSCR.783....1B ]

Date Received (UTC): 2018-06-08 22:37:40
Sender: Mr. Dave Balam
Group: DAO_OTS

Dave Balam report/s a classification of object: SN 2011dz

Type: SN Ia
Redshift: 0.025

The following Classification spectrum was provided:

Obsdate: 2011-07-05 08:51:40
Instrument: Plaskett
Telescope: Dominion AStrophysical Observatory

Remarks: D. D. Balam, Dominion Astrophysical Observatory, National Research Council of Canada (NRCC); M. L. Graham, Las Cumbres Observatory Global Telescope, University of California at Santa Barbara; E. Y. Hsiao, Lawrence Berkeley Laboratory; and D. W. E. Green, Harvard University, report that a spectrogram (range 389-725 nm, resolution 0.3 nm) of PSN J16124482+2817032 = SN 2011dz, obtained on July 5.37 UT with the 1.82-m Plaskett Telescope of the NRCC, shows it to be a type-Ia supernova about 35 days past maximum light. Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (Blondin and Tonry 2007, Ap.J. 666, 1024) indicates that 2011dz is most similar to the type-Ia supernova 2002ic at 35 days past maximum light.

Details of the object and its spectra can be viewed here: