Classification certificate for object 2014ch
TNS Classification Report No. 2103 [ 2018TNSCR.788....1B ]

Date Received (UTC): 2018-06-09 20:08:12
Sender: Mr. Dave Balam
Group: DAO_OTS

Dave Balam report/s a classification of object: SN 2014ch

Type: SN Ia
Redshift: 0.043

The following Classification spectrum was provided:

Obsdate: 2014-06-04 06:17:45
Instrument: Plaskett
Telescope: Dominion AStrophysical Observatory

Remarks: D. D. Balam, Dominion Astrophysical Observatory, National Research Council of Canada; M. L. Graham, Las Cumbres Observatory Global Telescope, University of California at Santa Barbara; and E. Y. Hsiao, Las Campanas Observatory, report that a spectrogram (range 369-700 nm, resolution 0.3 nm) of PSN J15583110+1251596 = SN 2014ch, obtained on June 4.38 UT with the 1.82-m Plaskett Telescope of the National Research Council of Canada, shows it to be a type-Ia supernova near 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 2014ch is most similar to the peculiar type-Ia supernova 2003fg at 2 days post-maximum light.

Details of the object and its spectra can be viewed here: https://wis-tns.weizmann.ac.il/object/2014ch