Classification certificate for object 2017iyl
TNS Classification Report No. 1552 [ 2017TNSCR1455....1B ]

Date Received (UTC): 2017-12-21 16:15:22
Sender: Dr. Andrea Pastorello
Group: Padova-Asiago

M. Berton, S. Chen, S. Ciroi, P. Ochner, E. Congiu, A. Reguitti (Padova University), Y. Cai, A. Pastorello (INAF-OAPd) report/s a classification of object: SN 2017iyl

Type: SN Ia
Redshift: 0.027846

Remarks: The spectrum resembles that of the normal Type Ia SN 1999ee (Hamuy et al. 2002, AJ, 124, 417) about one week after the B-band maximum. The velocity of the SN ejecta, as inferred from the position of the minimum of the Si II 635.5 nm feature, is about 10800 km/s. The redshift of the host galaxy is from Huchra et al. 2012, ApJS, 199, 26.

The following Classification spectrum was provided:

Obsdate: 2017-12-20 23:24:14
Instrument: BC-Ekar
Telescope: Asiago Ekar Telescope

Remarks: 2x1800 s exposure; range 360-700 nm; resolution 0.6 nm.

Details of the object and its spectra can be viewed here: https://wis-tns.weizmann.ac.il/object/2017iyl