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FIRE classification of LSQ13dpa, a possible young type II supernova

ATel #5678; E. Y. Hsiao (LCO), G. H. Marion (U Texas; CfA), R. P. Kirshner (CfA), C. Contreras, C. Gall, M. D. Stritzinger (Aarhus U), M. M. Phillips, N. Morrell (LCO), C. Baltay, N. Ellman, E. Hadjiyska, R. McKinnon, D. Rabinowitz, E. S. Walker (Yale U), U. Feindt (U. Bonn)
on 21 Dec 2013; 00:45 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Eric Hsiao (hsiao@lco.cl)

Subjects: Infra-Red, Optical, Supernovae

We report the spectroscopic classification of LSQ13dpa using a near-infrared spectrum (range 800-2500 nm) obtained on Dec 20.29 UT with the FoldedPort Infrared Echellette (FIRE) spectrograph on the 6.5-m Magellan Baade Telescope at Las Campanas Observatory. The near-infrared spectrum shows a blue continuum with weak P-Cyg lines of hydrogen Paschen series, typical of a young type II supernova. We also obtained BVri images with the Swope 1-m on Dec 19.29 and Dec 20.30 UT. The un-subtracted B magnitude rose slightly from 18.32 to 18.27 with an uncertainty of 0.02 mag. Adopting the distance modulus from the redshift the presumed host (LCSB S1492O; z=0.023) and standard cosmology, the absolute B magnitude is approximately -16.7. The candidate was supplied by the La Silla-Quest survey (see Hadjiyska et al., ATel #3812), with the coordinates RA 11:01:12.91 DEC -05:50:52.57.