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Spectroscopic classification of Gaia17apq and Gaia17apv with Double Spectrograph on Palomar 200-inch telescope

ATel #10192; N. Blagorodnova, S. Adams (Caltech)
on 21 Mar 2017; 21:31 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Nadejda Blagorodnova (nblago@ast.cam.ac.uk)

Subjects: Optical, Supernovae, Transient

We report the classification of Gaia17apq and Gaia17apv (SN2017cao and SN2017cat), discovered by the Gaia ESA survey. The observations were performed on UT 2017-03-16 with the Double Spectrograph (DBSP; range 350-1000nm, spectral resolution R~4000) on Palomar 200-inch (P200) telescope. Classifications were performed using SNID (Blondin and Tonry 2007) and Superfit (Howell et al. 2005). The classification spectra can be obtained from the IAU Transient Name Server.

 
Name        |  IAU Name  | RA (J2000) | Dec (J2000)   | redshift   |  Discovery (UT)     | Discovery mag |  Type   | Phase | Notes  
Gaia17apq   |  SN2017cao |19:24:02.19 | +42:17:21.08  | 0.02       | 2017-03-06 23:47:16 | 17.15         |   IIb   | +14 d | (1)  
Gaia17apv   |  SN2017cat |17:58:52.09 | +34:00:09.32  | 0.02       | 2016-07-12 08:12:27 | 17.02         |   II    |  +5 d | (2)  

(1) Good fit template from SuperFit is SN1993J.
(2) Best fit template from SNID is SN2005cs.
We acknowledge ESA Gaia (http://cosmos.esa.int/gaia), and the DPAC Photometric Science Alerts Team (http://gsaweb.ast.cam.ac.uk/alerts) (Rixon et al, 2014, ATel #6593).