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Spectroscopic classification of SN 2017cjb by NUTS (NOT Un-biased Transient Survey)

ATel #10202; T. Reynolds (NOT, Turku), H. Kuncarayakti (Turku), A. Somero (MAGIC, Turku), S. Mattila (Turku), L. Galbany (Pitt), M. Stritzinger (Aarhus), N. Elias-Rosa, A. Pastorello (Padova), T. Kangas, J. Harmanen (Turku), P. Lundqvist, F. Taddia, M. Ergon (Stockholm), on behalf of the NUTS collaboration
on 24 Mar 2017; 09:24 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Hanindyo Kuncarayakti (kuncarayakti@gmail.com)

Subjects: Optical, Supernovae, Transient

The NOT Unbiased Transient Survey (NUTS; ATel #8992) collaboration reports the spectroscopic classification of supernova SN 2017cjb in host galaxy NGC 4779. The candidate was discovered by K. Itagaki.

The observations were performed with the 2.56 m Nordic Optical Telescope equipped with ALFOSC (range 350-950 nm; resolution 1.6 nm) on 2017-03-23.945 UT.

Survey Name    | IAU Name   | Discovery (UT)  | Discovery mag | Observation (UT) | Redshift | Type | Phase                      | Notes  
AT 2017cjb     | SN 2017cjb | 2017-03-23.58   | 15.9          | 2017-03-23.945   | 0.00944  | II   | few days after explosion   | (1)  

(1) Host redshift from NED (Kent et al. 2008, AJ, 136, 713). Good spectral match is obtained with spectra of type IIP SN 1999gi soon after the explosion, at the redshift consistent with that of the host.

Classifications were performed using the GELATO (Harutyunyan et al. 2008, A&A, 488, 383) and SNID (Blondin and Tonry 2007, ApJ, 666, 1024) tools. Calibrated spectra and additional information can be retrieved in the IAU Transient Name Server.