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FIRE NIR spectroscopic classifications of optical transients

ATel #6442; N. Morrell (Las Campanas Observatory), G. H. Marion (University of Texas, Austin, Harvard CfA), R. P. Kirshner (Harvard CfA), E. Y. Hsiao, M. Stritzinger (Aarhus University)
on 3 Sep 2014; 19:43 UT
Credential Certification: Eric Hsiao (hsiao@lco.cl)

Subjects: Infra-Red, Optical, Supernovae

Referred to by ATel #: 7084

We report spectroscopic classifications of 5 supernovae based on near-infrared (NIR) spectroscopy (range 800-2400 nm) obtained on Sept. 3 UT with the FoldedPort Infrared Echellette (FIRE) spectrograph attached to the 6.5-m Magellan Baade Telescope.

 
 
Name                  | Source    | Type | Phase                   | Notes 
--------------------------------------------------------------------------- 
ASASSN-14gm           | ASAS      | II   | +3 days past explosion  | 1 
PSN J00321454-4122559 | BOSS      | Ia   | +3 weeks past max       | 2 
PSN J03442399-4440081 | Monard    | Ib	 | few months past max	   | 3 
PSN J22152655-1028346 | MASTER    | II	 | ~10 days past explosion | 4 
PSN J23441603+1046125 | Nishimura | II	 | ~10 days past explosion | 5 
 
1. Most similar	to the NIR spectrum of SN2013hj at 3 days past explosion. 
Also reported in ATel #6440. 
2. Most similar to the NIR spectrum of SN2013gy at 22 days past maximum. 
3. Previously classified as Type Ib and Type Ic-BL (ATel #6201 and ATel #6220). 
The late phase NIR spectrum confirms the original Type Ib classification. 
This SN is now more than 90 days past discovery, and the line widths and  
velocities remain higher than for normal SN Ib. 
4. Most similar to the NIR spectrum of SN2013hj at 10 days past explosion 
at approximately z~0.01. Also reported in ATel #6440. 
5. Most similar to the NIR spectrum of SN2013hj at 10 days past explosion. 
Also reported in ATel #6437.