Spectroscopic Classification of ASASSN-15cz and ASASSN-15da as Type Ia Supernovae
ATel #7064; A. Porter (Clemson), R. M. Wagner (LBTO/Ohio State), C. J. Miller (Michigan), R. A. Koff (Antelope Hills Observatory), S. Kiyota (Variable Star Observers League in Japan), J. Brimacombe (Coral Towers Observatory), T. W.-S. Holoien, K. Z. Stanek, C. S. Kochanek, A. B. Danilet, G. Simonian, U. Basu, N. Goss, J. F. Beacom (Ohio State), B. J. Shappee (Hubble Fellow, Carnegie Observatories), J. L. Prieto (Diego Portales; MAS), D. Bersier (LJMU), Subo Dong (KIAA-PKU), P. R. Wozniak (LANL), E. Falco (CfA), D. Szczygiel, G. Pojmanski (Warsaw University Observatory), B. Nicholls (Mt. Vernon Obs., New Zealand)
on 14 Feb 2015; 06:12 UT
Credential Certification: R. Mark Wagner (rmw@as.arizona.edu)
Subjects: Optical, Supernovae, Transient
We obtained optical spectroscopy (range 398-685 nm; resolution 0.3 nm) of ASASSN-15cz (ATEL #7058) and ASASSN-15da (ATEL #7061) on 2015 February 13.18 and 13.35 UT respectively using the Hiltner 2.4 m telescope (+OSMOS) of the MDM Observatory on Kitt Peak, Arizona. Classification was performed using SNID (Blondin and Tonry, 2007, ApJ, 666, 1024). We find that the spectra of both objects are most consistent with the normal Type Ia SN 1998aq 8 days before maximum light.