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Spectroscopic Classifications of Optical Transients with the Lick Shane telescope

ATel #10335; D. A. Coulter, Y.-C. Pan, R. J. Foley (UCSC)
on 30 Apr 2017; 19:46 UT
Credential Certification: Yen-Chen Pan (ypan6@ucsc.edu)

Subjects: Optical, Supernovae

We report the following classifications of optical transients from spectroscopic observations with the Kast spectrograph on the Shane telescope. Targets were supplied by ATLAS and Gaia. All observations were made on 2017 Apr 30 UT. Classifications were performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).

 
Name | IAU Name | RA (J2000) | Dec (J2000) | z | Type | Phase | Notes
ATLAS17ewe | AT2017diy | 08:38:55.11 | +52:49:18.23 | 0.044 | Ia | +1 d | (1) Gaia17ayg | AT2017cxo | 11:12:48.74 | +31:55:15.20 | 0.037 | Ia | +13 d | Gaia17bci | AT2017dit | 15:27:58.92 | +42:50:48.70 | 0.019 | Ia | -9 d | (2)

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) SN 1991bg-like object. We measure an Si II 6355 velocity of -9,900 km/s. (2) Consistent with classification in ATel #10333. We measure an Si II 6355 velocity of -14,400 km/s.