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iPTF Discoveries of Recent Type Ia Supernovae

ATel #8601; S. Papadogiannakis, F. Taddia, R. Ferretti, C. Fremling, E. Karamehmetoglu, T. Petrushevska, A. Nyholm, R. Roy, L. Hangard (OKC), P. Vreeswijk, A. Horesh, I. Manulis, A. Rubin, O. Yaron, G. Leloudas, D. Khazov, M. Soumagnac , S. Knezevic, J. Johansson (Weizmann), R. Lunnan, J. D. Neill, T. Barlow, Y. Cao, N. Blagorodnova, R. Walters, T. Kupfer (Caltech), D. Perley (DARK), I. Shivvers, M. Graham (UCB), S. B. Cenko (NASA/GSFC) on behalf of the intermediate Palomar Transient Factory
on 28 Jan 2016; 19:20 UT
Credential Certification: Rahman Amanullah (rahman@fysik.su.se)

Subjects: Optical, Supernovae, Transient

The intermediate Palomar Transient Factory (ATel #4807) reports the discovery and classification of the following Type Ia SNe.

Our automated candidate vetting to distinguish a real astrophysical source (1.0) from bogus artifacts (0.0) is powered by three generations of machine learning algorithms: RB2 (Brink et al. 2013MNRAS.435.1047B), RB4 (Rebbapragada et al. 2015AAS...22543402R) and RB5 (Wozniak et al. 2013AAS...22143105W). See ATel #7112 for additional details.

The classification spectra and additional details are made publicly available through WISeREP (Yaron & Gal-Yam 2012) and the Transient Name Server

 
IAU Name  | PTF name  | RA (J2000)   | Dec (J2000)  | Discovery date | Mag.  | Abs.Mag.| Band  | Redshift | Type   | Spec. date | Phase | Instrument | Observers/Reducers                     	                    | Scanner/s    | RB2/RB4/RB5    | Notes 
SN 2015bk | iPTF15fiv | 07:03:28.622 | +58:13:01.87 | 2015-12-31.32  | 20.61 | -19.91  | PTF-g | 0.249    | SN Ia  | 2016-01-12 | +8    | Keck1      | T. Kupfer,N. Blagorodnova/D. Perley (pipeline)  	            | I. Manulis   | 0.70/0.47/0.51 | (1) 
SN 2016al | iPTF15fjg | 12:31:11.216 | +57:29:43.93 | 2016-01-02.46  | 18.67 | -19.46  | PTF-g | 0.093    | SN Ia  | 2016-01-12 | -2    | P60-SEDM   | J. D. Neill/R. Walters/T. Barlow/J. D. Neill                 | A. Horesh    | 0.71/0.69/0.90 | (1),(2) 
SN 2016am | iPTF15fkd | 07:09:25.902 | +48:57:32.41 | 2016-01-01.35  | 18.12 | -18.99  | PTF-g | 0.060    | SN Ia  | 2016-01-13 | +17   | P60-SEDM   | J. D. Neill/N. Blagorodnova/R. Walters/T. Barlow/J. D. Neill | A. Rubin     | 0.79/0.74/0.86 | (1),(2) 
SN 2015bl | iPTF15fke | 08:59:52.704 | +53:15:54.81 | 2015-12-30.47  | 20.03 | -18.09  | PTF-r | 0.093    | SN Ia  | 2016-01-07 | +4    | Keck2      | M. Graham,I. Shivvers/M. Graham                              | A. Rubin     | 0.64/0.60/0.60 | (1) 
SN 2016ek | iPTF15fkq | 09:07:17.574 | +56:00:09.00 | 2016-01-01.42  | 19.78 | -16.68  | PTF-g | 0.045    | SN Ia  | 2016-01-13 | -5    | P60-SEDM   | J. D. Neill,N. Blagorodnova,T. Barlow/J. D. Neill            | G. Leloudas  | 0.32/0.58/0.56 | (1),(2) 
SN 2016el | iPTF15fks | 03:51:24.312 | +35:40:40.99 | 2016-01-12.28  | 18.96 | -17.33  | PTF-r | 0.042    | SN Ia  | 2016-01-13 | -2    | P60-SEDM   | J. D. Neill,N. Blagorodnova,R. Walters,T. Barlow/J. D. Neill | G. Leloudas  | 0.87/0.63/0.83 | (1),(2) 
SN 2016em | iPTF15fku | 01:17:25.134 | +32:55:16.91 | 2016-01-13.13  | 18.13 | -17.87  | PTF-g | 0.037    | SN Ia  | 2016-01-14 | -3    | P200       | N. Blagorodnova/P. Vreeswijk                                 | J. Johansson | 0.77/0.73/0.84 | (1),(2)  
[Dates are in UT; the estimated phase is with respect to peak light.] 
  

(1) Classification and phase obtained from SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).

(2) Discovered in 2016 despite the fact that the iPTF name starts with year prefix of 15.