TNS Classification Report No. 700 [ 2017TNSCR..30....1F ]
Date Received (UTC): 2017-01-06 21:09:40 Sender: Jose Prieto
Group: ASAS-SN
E. Falco, J. L. Prieto report/s a classification of object: SN 2017ah
Type: SN Ia
Remarks: We obtained a spectrum of ASASSN-17ad/AT2017ah on UT 2017 Jan 5.5 with FAST mounted on the FLWO 1.5m telescope. The spectrum of ASASSN-17ad is that of a Type Ia caught on the rise. Cross-correlation with a library of supernova spectra using the SNID and GELATO give best matches with normal Type Ia at 8-10 days before maximum light. After correcting for the redshift of the host galaxy (z=0.032863), we measure a Si II 635.5 nm expansion velocity from the P-Cygni absorption trough of 15600 km/s.
The following Classification spectrum was provided:
Obsdate: 2017-01-05 12:15:46
Instrument: FAST
Telescope: FLWO 1.5m Tillinghast
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2017ah
Date Received (UTC): 2017-01-06 21:09:40 Sender: Jose Prieto
Group: ASAS-SN
E. Falco, J. L. Prieto report/s a classification of object: SN 2017ah
Type: SN Ia
Remarks: We obtained a spectrum of ASASSN-17ad/AT2017ah on UT 2017 Jan 5.5 with FAST mounted on the FLWO 1.5m telescope. The spectrum of ASASSN-17ad is that of a Type Ia caught on the rise. Cross-correlation with a library of supernova spectra using the SNID and GELATO give best matches with normal Type Ia at 8-10 days before maximum light. After correcting for the redshift of the host galaxy (z=0.032863), we measure a Si II 635.5 nm expansion velocity from the P-Cygni absorption trough of 15600 km/s.
The following Classification spectrum was provided:
Obsdate: 2017-01-05 12:15:46
Instrument: FAST
Telescope: FLWO 1.5m Tillinghast
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2017ah