Spectroscopic Observations of AT 2019ehk with the Lick Shane telescope

ATel #12707; G. Dimitriadis, M. R. Siebert, C. D. Kilpatrick, C. Rojas-Bravo, R. J. Foley (UCSC), M. Rich (UCLA)
on 30 Apr 2019; 21:02 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Georgios Dimitriadis (gdimitri@ucsc.edu)

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We report the classification of the optical transient AT 2019ehk from spectroscopic observations with the Kast spectrograph on the Shane telescope, made on 2019 April 30 UT.

 
Name         | IAU Name  | RA (J2000)  | Dec (J2000)  |   z   | Type  | Phase  | Notes
 
             | AT2019ehk | 12:22:56.13 | +15:49:33.60 | 0.005 |       |        | (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 spectrum is red and nearly featureless. There is a strong (EW ~ 4.5 A) Na D doublet, indicating significant dust absorption. Dereddening by an appropriate amount to match the Na D absorption strength suggests that the intrinsic SED is quite blue. There is a weak feature close to H alpha. Assuming the feature is H alpha, we measure an expansion velocity of -10,000 km/s. The spectrum is consistent with a young core-collapse SN. Additional observations are needed to determine its precise classification.

We thank the Lick Observatory staff, especially Paul Lynam, for helping with these target-of-opportunity observations.