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iPTF Discoveries of Recent Type Ia Supernovae

ATel #8604; 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, N. Blagorodnova, Y. Cao (Caltech), S. B. Cenko (NASA/GSFC) on behalf of the intermediate Palomar Transient Factory
on 29 Jan 2016; 08:26 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  | 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 2016en | iPTF15fkw | 07:15:16.016 | +13:36:58.95 | 2016-01-13.28  | 20.44 | -18.55  | PTF-r | 0.133    | SN Ia  | 2016-01-14 | +6    | P200       | N. Blagorodnova/P. Vreeswijk | L. Hangard   | 0.49/0.61/0.61 | (1),(2) 
SN 2016eo | iPTF15fll | 12:34:57.044 | +09:50:36.35 | 2016-01-12.52  | 20.07 | -19.46  | PTF-r | 0.167    | SN Ia  | 2016-01-14 | +3    | P200       | N. Blagorodnova/P. Vreeswijk | L. Hangard   | 0.41/0.41/0.75 | (1),(2) 
SN 2016ep | iPTF15flr | 12:07:06.146 | +09:24:03.18 | 2016-01-13.44  | 18.92 | -19.10  | PTF-r | 0.088    | SN Ia  | 2016-01-14 | -2    | P200       | N. Blagorodnova/P. Vreeswijk | L. Hangard   | 0.89/0.73/0.91 | (1),(2), (3) 
SN 2016es | iPTF15fls | 12:28:27.293 | +07:04:41.11 | 2016-01-13.48  | 20.80 | -18.77  | PTF-r | 0.170    | SN Ia  | 2016-01-14 | +7    | P200       | N. Blagorodnova/P. Vreeswijk | L. Hangard   | 0.47/0.27/0.49 | (1),(2) 
SN 2016eq | iPTF15fmw | 12:53:40.701 | +51:15:49.37 | 2016-01-02.47  | 19.87 | -18.19  | PTF-g | 0.090    | SN Ia  | 2016-01-16 | -2    | DCT        | S. B. Cenko/S. B. Cenko      | R. Roy       | 0.75/0.67/0.79 | (1),(2) 
SN 2016er | iPTF15fnt | 11:33:56.947 | +49:10:25.20 | 2016-01-15.48  | 20.18 | -16.51  | PTF-g | 0.050    | SN Ia  | 2016-01-16 | -8    | DCT        | S. B. Cenko/S. B. Cenko      | C. Fremling  | 0.83/0.48/0.64 | (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.

(3) Already published as PS16kk by The Pan-STARRS Survey for Transients .