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Spectroscopic Classification of kait-18ad (= AT2018dfy) with Keck I

ATel #11842; M. R. Siebert, C. D. Kilpatrick, R. J. Foley, G. Dimitriadis (UC Santa Cruz)
on 11 Jul 2018; 19:33 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Ryan Foley (foley@ucsc.edu)

Subjects: Optical, Supernovae

We report the classification of kait-18ad (= AT2018dfy) from a spectroscopic observation made on 2017 July 11 UT with the Low Resolution Imaging Spectrometer (LRIS) on the Keck I telescope. The target was supplied by the Lick Observatory Supernova Search.

 
Name      | IAU Name  | RA (J2000)  | Dec (J2000)  | z     | Type |  Notes 
 
  
kait-18ad | AT2018dfy | 21:43:32.91 | +43:32:58.20 | 0.014 | IIn  | (1)  
Notes: When the redshift is given to 2 decimal places, it is derived from the SN spectrum. Otherwise, the redshift is determined from the host galaxy. (1) The continuum is blue with intermediate-width H alpha, H beta, and He II 4686 emission lines. H beta has a FWHM of 1000 km/s. While it is possible that this object will evolve into a different SN type, the current spectrum is consistent with a Type IIn supernova.