SIMBAD references

J. Chen and X.-F. Wang, Tsinghua Center for Astrophysics, Tsinghua University; X.-L. Wang, J.-J. Zhang, and J.-M. Bai, Yunnan Astronomical Observatory of China (YNAO); and T.-M. Zhang, National Astronomical Observatories of China, report on an optical spectrogram (range 330-860 nm) of PSN J13085839-1531041 = SN 2011iy that was obtained on 2011 Dec. 11.8 UT with the 2.4-m telescope (+ YFOSC) at the LiJiang Gaomeigu Station of YNAO. The spectrum is consistent with a type-Ia supernova at 1-2 weeks after maximum light. The best fit to this spectrum found by GELATO (Harutyuyan et al. 2008, A.Ap. 488, 383; available at URL https://gelato.tng.iac.es/login.cgi) suggests that 2011iy is similar to SN 2002dj at 11 days after maximum light. Adopting a recession velocity 1279 km/s for the host galaxy (NGC 4984), from the NED, they measure the velocity of the Si II 635.5-nm absorption feature to be about 13000 km/s, which is usually high for a type-Ia supernova at this phase.