Spectroscopic classification of SN2018afm and SN2018aik
ATel #11453; Nadejda Blagorodnova, Christoffer Fremling, James D. Neill, Richard Walters, Christopher B. Cannella, Shrinivas R. Kulkarni (Caltech)
on 21 Mar 2018; 00:23 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Nadejda Blagorodnova (nblago@ast.cam.ac.uk)
Subjects: Optical, Supernovae
We report the classification of the following bright transients. The spectra have been obtained with the Spectral Energy Distribution Machine (SEDM) (range 350-950nm, spectral resolution R~100) mounted on the Palomar 60-inch (P60) telescope (Blagorodnova et. al. 2018, PASP, 130, 5003).
Classifications were done with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).
Survey Name | IAU Name | RA (J2000) | Dec (J2000) | Discovery date | Discovery mag | Redshift | Class | Classification Date | Notes
------------|-----------|-------------|--------------|----------------|---------------|----------|-------|---------------------|------
ATLAS18mna | SN2018aik | 12:41:50.05 | +68:15:38.34 | 2018-03-17 | 18.448 (c) | 0.09 | SN Ia | 2018-03-20 | (1)
- | SN2018afm | 07:59:25.03 | +16:25:35.40 | 2018-03-13 | 17.3 (Clear) | 0.0163 | SN II | 2018-03-20 | (2)
Notes: (1) Best fit to SN2005dv at 1 day pre-peak.
(2) Spectroscopic redshift from SDSS. The object shows a blue continuum with a broad H-alpha line at the redshift of the host galaxy. Best fit to the type II SN2004et at peak.
