G. Hosseinzadeh, I. Arcavi, D. A. Howell, C. McCully (LCOGT/UCSB), S. Valenti (UC Davis)
ATel #9065; Firstname1 Lastname1 (Affil1), Firstname2 Lastname2 (Affil2)...
on 19 May 2016; 19:30 UT
Credential Certification: Iair Arcavi (iarcavi@lcogt.net)
Subjects: Optical, Supernovae
We obtained a spectrum of ASASSN-16ff/AT 2016cdd (ATel #9058) on 2016 May 19.6 UT with the robotic FLOYDS instrument mounted on the LCOGT 2-meter telescope in Siding Spring, Australia. Using Superfit (Howell et al. 2005, ApJ, 634, 119), we find a good fit to the Type Ib SN 1999dn 10 days after maximum light at the redshift of the proposed host galaxy (z=0.009; HIPASS Catalog 2006, via NED). We find He I absorption features at an expansion velocity of ~9000 km/s. The spectrum is available on the Transient Name Server.
