Spectroscopic Classification and Additional Photometric Observations of ASASSN-14gh
ATel #6438; T. W.-S. Holoien (Ohio State), R. M. Wagner (LBTO/OSU), A. Porter (Clemson), J. L. Prieto (Diego Portales; MAS), K. Z. Stanek, C. S. Kochanek, A. B. Davis, B. J. Shappee, U. Basu, J. F. Beacom (Ohio State), D. Bersier (LJMU), J. Brimacombe (Coral Towers Observatory), D. Szczygiel, G. Pojmanski (Warsaw University Observatory)
on 2 Sep 2014; 19:02 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Thomas Holoien (tholoien@astronomy.ohio-state.edu)
Subjects: Optical, Supernovae, Transient
Referred to by ATel #: 7084
We obtained a spectrum of ASASSN-14gh (ATel #6426) on UT 2014-08-29.13 with the 2.4-m Hiltner telescope of the MDM Observatory and the CCDS instrument (range: 3800-7450 Å, resolution: 7 Å) on Kitt Peak. Classification of the spectrum with the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) indicates that ASASSN-14gh is a normal Type Ia supernova near maximum light. The best-fit redshift from SNID is 0.0044 ± 0.0047, although there are reasonable matches at higher redshifts, and a host galaxy spectrum is needed to more accurately determine the redshift.
We also report additional photometric observations obtained using the quadruple 14-cm "Brutus" ASAS-SN unit located in Haleakala, Hawaii since discovery. We detect ASASSN-14gh in images obtained on UT 2014-08-29.24 at V~16.6 mag and in images obtained on UT 2014-09-02.28 at V~15.9 mag. Given the ASAS-SN discovery magnitude of V~16.8, the SN has brightened by nearly a magnitude since discovery on UT 2014-08-28.29. Additional follow-up observations are encouraged.