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Spectroscopic Observation of AT2018cow/ATLAS18qqn with the Lick Shane 3-m telescope

ATel #11736; D. O. Jones, C. Rojas-Bravo, G. Dimitriadis, Y. -C. Pan, R. J. Foley (UCSC)
on 19 Jun 2018; 22:25 UT
Credential Certification: Georgios Dimitriadis (gdimitri@ucsc.edu)

Subjects: Optical, Supernovae

Referred to by ATel #: 11737, 11740, 11741, 11742, 11748, 11749, 11753

We obtained a spectrum of AT2018cow/ATLAS18qqn (ATel #11727) with the Kast spectrograph on the Shane telescope, on 2018 Jun 19 UT. The spectrum is blue and featureless, in accordance with ATel #11732. We detect Ca II H&K absorption features at z=0 and at z=0.014, providing evidence that the transient is associated with CGCG 137-068. Further spectroscopic observations are encouraged.