Palomar 60-inch SEDM classification of optical transients
ATel #11550; James D. Neill, Nadejda Blagorodnova, Christoffer Fremling, Richard Walters, Christopher B. Cannella, Shrinivas R. Kulkarni (Caltech)
on 19 Apr 2018; 19:48 UT
Credential Certification: Christoffer Fremling (fremling@caltech.edu)
Subjects: Cataclysmic Variable, Supernovae, Transient, Variables
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
--------------|-------------|-------------|--------------|----------------|-----------------|----------|--------|---------------------|------
ATLAS18mzs | SN2018aqy | 08:35:45.46 | +28:16:13.00 | 2018-03-30 | 18.42 (orange) | 0.07 | SN Ia | 2018-04-08 | (1)
Gaia18aqs | AT2018ajb | 14:40:33.07 | -15:45:23.04 | 2018-03-03 | 18.32 (G) | - | CV | 2018-04-09 | (2)
ASASSN-18gb | AT2018akx | 10:03:23.22 | -26:10:55.85 | 2018-03-22 | 17.50 (g) | - | LBV | 2018-04-09 | (3)
Gaia18asq | AT2018amz | 08:14:31.21 | -25:13:01.49 | 2018-03-25 | 15.12 (G) | - | Star | 2018-04-09 | (4)
ATLAS18mvp | SN2018aok | 13:59:52.03 | -14:54:47.30 | 2018-02-15 | 18.25 (orange) | 0.04 | SN I | 2018-04-09 | (5)
| SN2018aoy | 14:50:47.92 | +54:24:28.80 | 2018-04-02 | 18.00 (Clear) | 0.05 | SN Ia | 2018-04-09 | (6)
| AT2018aqc | 11:22:54.89 | +16:35:23.00 | 2018-04-03 | 13.80 (Clear) | - | CV | 2018-04-09 | (7)
Gaia18avo | SN2018arl | 07:20:32.55 | +49:05:31.20 | 2018-04-04 | 18.21 (G) | 0.0283 | SN II | 2018-04-10 | (8)
ATLAS18mzw | SN2018arc | 17:42:16.20 | +50:29:19.51 | 2018-04-06 | 18.16 (orange) | 0.03 | SN II | 2018-04-11 | (9)
Gaia18aqx | SN2018ajl | 19:04:30.43 | +46:54:00.40 | 2018-03-17 | 18.29 (G) | 0.03 | SN I | 2018-04-13 | (10)
Gaia18ayb | SN2018auh | 11:25:11.63 | +69:39:31.21 | 2018-04-12 | 17.92 (G) | 0.06 | SN I | 2018-04-15 | (11)
| SN2018aup | 08:31:40.24 | -04:07:04.10 | 2018-04-15 | 17.00 (Clear) | 0.0405 | SN Ia | 2018-04-18 | (12)
ASASSN-18hz | SN2018aur | 12:44:38.54 | +06:18:04.74 | 2018-04-14 | 18.20 (g) | 0.0561 | SN Ia | 2018-04-18 | (13)
Gaia18ayd | SN2018auv | 10:49:16.34 | +26:22:23.12 | 2018-04-13 | 18.22 (G) | 0.0635 | SN Ia | 2018-04-18 | (14)
| SN2018avg | 12:53:49.45 | +29:35:27.80 | 2018-04-16 | 18.20 (Clear) | 0.0463 | SN Ia | 2018-04-18 | (15)
(1) Best fit to SN 1990n at peak. Redshift from the broad SN features.
(2) H emission consistent with z=0.
(3) Strong Ha, Hb and Ca consistent with z=0. Possibly an LBV in NGC 3109.
(4) M-star spectrum.
(5) Best fit to Type Ic SN 2004aw. Also matches to SN Ia-91bg. Redshift from the broad SN features.
(6) Best fit to SN 2002bo at -9d. Redshift from the broad SN features.
(7) Blue continuum with Balmer-line absorption at z=0.
(8) Best fit Type IIP SN 1999em. Spectroscopic host redshift.
(9) Best fit to Type IIP SN 2005cs. Redshift from the Ha feature of the SN.
(10) Good fits to both SNe Ia and Ic. Redshift from the broad SN features.
(11) Best fit to Type Ia SN 1990n at +3d. Redshift from the broad SN features.
(12) Best fit to SN 2005am at +4d. Spectroscopic redshift.
(13) Best fit to SN 2006mo at +5d. Spectroscopic redshift from SDSS.
(14) Best fit to SN 2001gc at +5d. Spectroscopic redshift from SDSS.
(15) Best fit to SN 2000dm at -2d. Spectroscopic redshift from SDSS.
