Spectral Confirmation of PSN J15213475-0722183 as a 2008S-like transient
ATel #4798; S. J. Margheim (Gemini Observatory), A Rest (STScI), S. J. Smartt (Queens University Belfast)
on 7 Feb 2013; 22:53 UT
Credential Certification: Armin Rest (arest@stsci.edu)
Subjects: Optical, Supernovae
A spectrogram of PSN J15213475-0722183 obtained on Feb 7.38 UT with the Gemini-South Telescope at Cerro Pachon using GMOS-S confirms the identification of narrow H-alpha in emission and a blue continuum similar to that reported in (ATEL #4795, ATEL #4796). The GMOS-S spectrum is higher S/N and we also detect narrow H-alpha and H-beta emission with FWHM expansion velocities less than 750 km/s. Additionally, our spectrum detects [Ca II] in emission, and weak Na I absorption. Overall, the spectrum is a close match with the early (15-day) spectrum of supernova impostor 2008S (Smith et al., 2009, ApJ, 697, L49, Botticella et al. 2009, MNRAS, 398, 1041). Further observations are ongoing within PESSTO to determine the nature of this transient.
