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Spectroscopic classification of ASASSN-18bq by NUTS (NOT Un-biased Transient Survey)

ATel #11305; J. Harmanen, H. Kuncarayakti, S. Mattila, T. Reynolds, S. Moran (Turku), S. Benetti (Padova), A. Somero (MAGIC/Turku), T. Kangas (STSci), P. Lundqvist, F. Taddia, M. Ergon (Stockholm), S. Dong (KIAA-PKU), M. Fraser (UCD), M. Stritzinger (Aarhus U) and J. Telting (NOT) on behalf of the NUTS collaboration.
on 16 Feb 2018; 10:30 UT
Credential Certification: Seppo Mattila (seppo.mattila@utu.fi)

Subjects: Optical, Supernovae

The Nordic Optical Telescope (NOT) Unbiased Transient Survey (NUTS; ATel #8992) reports the spectroscopic classification of ASASSN-18bq in an unknown host galaxy. The candidate was discovered by the All-Sky Automated Survey for Supernovae (ATEL #8944, #8979).

The observation was performed with the 2.56 m Nordic Optical Telescope equipped with ALFOSC (range 350-950 nm; resolution 1.6 nm FWHM).

Survey Name    | IAU Name   | Discovery (UT)  | Discovery mag | Observation (UT) | Redshift | Type | Phase   | Notes 
ASASSN-18bq    | SN2018mc   | 2018-01-29.51   | 17.4          | 2018-02-14.27    | 0.035    | IIb  | Post-max| (1) 

(1) Redshift z = 0.03-0.04 based on SN features. Matches type IIb SNe few days after maximum light.

Classification was 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. (iv)