PESSTO spectroscopic classification of optical transients

ATel #10131; A. Nyholm, C. Barbarino, F. Taddia, C. Fremling, J. Sollerman (OKC), J. Lyman (Univ. of Warwick), T.-W. Chen (MPE), C. Inserra, E. Kankare, K. Maguire, S. J. Smartt, K. W. Smith, D. Young (QUB), M. Sullivan (Southampton), S. Valenti (UC Davis), O. Yaron, I. Manulis, (Weizmann), J. Tonry, B. Stalder, L. Denneau., A. Heinze, H. Weiland (IfA, Univ. of Hawaii), A. Rest (STScI)
on 26 Feb 2017; 19:20 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Francesco Taddia (ftadd@astro.su.se)

Tweet

PESSTO, the Public ESO Spectroscopic Survey for Transient Objects (see Smartt et al. 2015, A&A, 579, 40 http://www.pessto.org ), reports the following supernova classifications. The targets were supplied by the ATLAS survey, see Tonry et al. (2011, PASP, 123, 58) and Tonry et al. (ATel #8680), and by MASTER (see http://observ.pereplet.ru/ ; Lipunov et al. 2004, AN, 325, 580). The observations were performed on the ESO New Technology Telescope at La Silla on 2017 February 25, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). The classifications were done with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024) and GELATO (Harutyunyan et al., 2008, A&A, 488, 383). The classification spectra and additional details can be obtained from http://www.pessto.org (via WISeREP) and the IAU Transient Name Server.

 
Survey Name                   | IAU Name  | RA (J2000)  | Dec (J2000) | Disc. Date | Source  | Disc Mag |  z     | Type        | Phase       | Notes 
ATLAS17bds                    | AT2017bel | 08 56 46.74 | +29 55 15.5 |  20170217  |  ATLAS  |   18.4   |  0.033 | ?           | ?           | (1) 
ATLAS17bcs                    | AT2017ayj | 09 22 51.10 | -30 14 08.5 |  20170219  |  ATLAS  |   17.6   |  0     | Stellar     | ?           | (2) 
MASTEROTJ042250.16-820415.4   | SN2017azw | 04 22 49.71 | -82 04 09.6 |  20170219  |  MASTER |   15.3   |  0.02  | SN Ia       | -5 d        | (3) 
ATLAS17bdk                    | SN2017bcd | 09 59 50.58 | -20 59 37.5 |  20170215  |  ATLAS  |   18.3   |  0.05  | SN Ia       | -6 d        | (4) 
ATLAS17bdc                    | SN2017ayp | 13 12 00.98 | -28 22 08.5 |  20170215  |  ATLAS  |   18.2   |  0.08  | SN Ia       | +5 d        | (5) 

(1) Blue continuum. Redshift from SDSS.

(2) Blue continuum with Hbeta, Hgamma, Hdelta in absorption at z=0.

(3) Best SNID fit to the normal SN Ia 2006gr at -5 d. Many other good fits to normal SNe Ia at pre-maximum phases. Also discovered by ASASSN (ATel #10108).

(4) Best SNID fit to the normal SN Ia 2007af at -6 d. Many other good fits to normal SNe Ia at pre-maximum phases.

(5) Best SNID fit to the normal SN Ia 1996C at +5 d. Many other good fits to SNe Ia at post-maximum phases.