TNS Classification Report No. 842 [ 2017TNSCR.300....1H ]
Date Received (UTC): 2017-03-10 20:16:48 Sender: Griffin Hosseinzadeh
Group: LCOGT SN-KP
G. Hosseinzadeh, D. A. Howell, D. Sand, S. Valenti, L. Tartaglia, C. McCully, K. A. Bostroem, S. Wyatt, I. Arcavi report/s a classification of object: SN 2017cbv
Type: SN IaRedshift: 0.003999
Remarks: The spectrum is consistent with a SN Ia 2 weeks or more before maximum light at the redshift of the host galaxy (z=0.004; Koribalski et al. 2004, AJ, 128, 16). High velocity SiII is seen at 23,000 km/s, stronger than the main component. Using Superfit (Howell et al. 2005, ApJ, 634, 1190), we find a good fit to SN 1999aa, at -11d, though AT 2017cby appears to be observed even earlier.
The following Classification spectrum was provided:
Obsdate: 2017-03-10 16:28:21
Instrument: FLOYDS-S
Telescope: Faulkes Telescope South
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2017cbv
Date Received (UTC): 2017-03-10 20:16:48 Sender: Griffin Hosseinzadeh
Group: LCOGT SN-KP
G. Hosseinzadeh, D. A. Howell, D. Sand, S. Valenti, L. Tartaglia, C. McCully, K. A. Bostroem, S. Wyatt, I. Arcavi report/s a classification of object: SN 2017cbv
Type: SN IaRedshift: 0.003999
Remarks: The spectrum is consistent with a SN Ia 2 weeks or more before maximum light at the redshift of the host galaxy (z=0.004; Koribalski et al. 2004, AJ, 128, 16). High velocity SiII is seen at 23,000 km/s, stronger than the main component. Using Superfit (Howell et al. 2005, ApJ, 634, 1190), we find a good fit to SN 1999aa, at -11d, though AT 2017cby appears to be observed even earlier.
The following Classification spectrum was provided:
Obsdate: 2017-03-10 16:28:21
Instrument: FLOYDS-S
Telescope: Faulkes Telescope South
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2017cbv