ePESSTO spectroscopic classification of optical transients

ATel #10318; C. P. Gutierrez, R. Cartier, M. Smith (Southampton), L. Galbany (Pittsburgh), T.-W. Chen (MPE), J. Anderson (ESO), C. Inserra (Southampton), E. Kankare (QUB), K. Maguire (QUB), S. J. Smartt (QUB), K. W. Smith (QUB), M. Sullivan (Southampton), S. Valenti (UC Davis), O. Yaron (Weizmann), D. Young (QUB), I. Manulis (Weizmann), J. Tonry, B. Stalder, L. Denneau., A. Heinze, H. Weiland (IfA, Univ. of Hawaii), A. Rest (STScI), D. Wright (QUB), K. C. Chambers, H. Flewelling, M. Huber, T. Lowe. E. Magnier, A. Schulz, C. Waters, R. J. Wainscoat, M. Wilman (IfA, Univ. Hawaii)
on 24 Apr 2017; 16:43 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Mathew Smith (matsmith2@gmail.com)

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ePESSTO, the extended 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. Targets were supplied by the ATLAS survey, see Tonry et al. (2011, PASP, 123, 58) and Tonry et al. (ATel #8680), the ESA Gaia, DPAC and the Photometric Science Alerts Team (http://gsaweb.ast.cam.ac.uk/alerts) and by Pan-STARRS Survey for Transients (see Chambers et al. 2016, arXiv:1612.05560, and http://pswww.ifa.hawaii.edu ). All observations were performed on the ESO New Technology Telescope at La Silla on 2017 April 23, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were obtained using SNID (Blondin & Tonry, 2007, ApJ, 666, 1024). 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 
Gaia17axk   | SN2017cud | 09 40 17.12 | -03 17 30.6 |  20170331  | Gaia   |   19.3   | 0.068 |  Ia  | +4 to +7d | 
ATLAS17czi  | SN2017cik | 07 54 13.06 | +21 47 36.4 |  20170315  | ATLAS  |   18.6   | 0.016 |	IIn | -3 to +3d | (1)   
ATLAS17dkv  | SN2017cug | 07 57 49.85 | -21 41 09.3 |  20170327  | ATLAS  |   18.8   | 0.024 |  Ia  | +8 to +10d| (2)  
- - - -     | SN2017dgk | 09 54 41.71 | -26 35 01.6 |  20170421  | - 	  |   18.1   | 0.058 |  Ic  | -7 to -4d | 
PS17cjg     | SN2017ddc | 11 55 41.63 | +24 55 07.4 |  20170411  | PS1	  |   19.3   | 0.034 |  Ic  |+11 to +20d| 
PS17cjn     | SN2017ddz | 12 30 11.77 | -20 43 50.5 |  20170415  | PS1	  |   19.4   | 0.083 |  Ia  | +4 to +7d | (3) 
ATLAS17dhd  | AT2017cnu | 13 49 08.14 | -30 14 48.9 |  20170323  | ATLAS  |   18.3   | - - - |  -   |  - - - -  | (4) 
Gaia17bbf   | AT2017dfl | 17 38 34.84 | +01 25 14.3 |  20170418  | Gaia   |   18.1   | 0.000 | Star |  - - - -  | (5) 
PS17cjx     | SN2017ddf | 18 53 27.82 | +28 57 06.1 |  20170415  | PS1	  |   19.3   | 0.075 |  Ia  |+11 to +20d| 
Gaia17bav   | SN2017dek | 20 25 44.71 | -21 39 39.8 |  20170416  | Gaia   |   18.9   | 0.063 |  II  |+11 to +20d| 
ATLAS17dks  | SN2017ctt | 15 30 01.98 | +14 57 22.1 |  20170329  | ATLAS  |   18.4   | 0.090 |  Ia  |   >20d    | 
Gaia17axl   | SN2017cue | 22 11 26.61 | -18 21 52.7 |  20170403  | Gaia	  |   18.1   | 0.045 |  Ia  |   >20d    | 
Gaia17bab   | SN2017dby | 20 04 44.89 | -09 56 08.6 |  20170415  | Gaia   |   18.4   | 0.045 |  Ia  | +4 to +7d | 
 
1). Classification obtained with Gr11 and Gr16 grism  
2). Best match to the over-luminous SN1999ac, a 91T-like SN, at +8d 
3). Redshift determined from host galaxy emission lines  
4). Object not detected in a long acquisition image of 60s 
5). A blue continuum with Balmer lines at z=0.0 consistent with a variable star.