Palomar 60-inch SEDM classification of optical transients
ATel #11493; Nadejda Blagorodnova, Christoffer Fremling, James D. Neill, Richard Walters, Christopher B. Cannella, Shrinivas R. Kulkarni (Caltech)
on 30 Mar 2018; 23:13 UT
Credential Certification: Christoffer Fremling (fremling@caltech.edu)
Subjects: Optical, Nova, Supernovae, Transient
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
------------|-----------|-------------|--------------|----------------|----------------|----------|--------|---------------------|------
ASASSN-18gi | SN2018amo | 13:14:25.49 | +50:58:40.84 | 2018-03-26 | 17.5 (g-Sloan) | 0.0297 | SN Ia | 2018-03-28 | (1)
ATLAS18mtp | SN2018anh | 16:15:00.80 | +31:04:19.01 | 2018-03-28 | 17.8 (orange) | 0.0226 | SN II | 2018-03-29 | (2)
Gaia18asm | AT2018amv | 05:11:32.56 | +18:47:35.99 | 2018-03-25 | 16.8 (G-Gaia) | - | Nova | 2018-03-29 | (3)
ATLAS18muy | SN2018ant | 08:36:31.45 | -11:49:40.73 | 2018-03-28 | 18.3 (orange) | 0.0197 | SN II | 2018-03-30 | (4)
Notes: (1) Best fit to SN1994d at -10d. Spectroscopic redshift from SDSS.
(2) Best fit to SN1999em at -3d. Spectroscopic redshift from SDSS.
(3) H and He consistent with a Galactic dwarf nova.
(4) Best fit to Type IIP SN2005cs at +4d. Also good fits to SNe IIn. Spectroscopic redshift from NED.
