iPTF Discoveries of Recent Type Ia Supernovae

ATel #7178; S. Papadogiannakis, F. Taddia, T. Petrushevska, C. Fremling, L. Hangard, J. Johansson, E. Karamehmetoglu, K. Migotto, A. Nyholm, R. Roy (OKC), S. Ben-Ami, A. De Cia, Y. Dzigan, A. Horesh, D. Khazov, M. Soumagnac, I. Manulis, A. Rubin, I. Sagiv, P. Vreeswijk, O. Yaron (Weizmann),H. Bond(Penn State U), P. Bilgi, Y. Cao, G. Duggan (Caltech), on behalf of the intermediate Palomar Transient Factory
on 5 Mar 2015; 18:07 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Rahman Amanullah (rahman@fysik.su.se)

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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 approved classification (and/or subsequent) spectra are made publicly available through WISeREP (Yaron & Gal-Yam 2012).

 
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 
iPTF15jq   | 11:32:48.79 | +37:54:01.4 | 2015-02-12.41  | 20.3 | -16.9   | PTF-g | 0.06     | SN Ia    | 2015-02-18 | -3d   | P200+DBSP  | H. Bond/ Vreeswijk     | C. Fremling             | 0.49/0.35/0.55 | (1) 
iPTF15li   | 12:32:38.63 | +05:36:41.4 | 2015-02-15.53  | 20.9 | -18.2   | PTF-g | 0.14     | SN Ia    | 2015-02-26 | +4d   | NOT+ALFOSC | F. Taddia/F. Taddia    | E. Karamehmetoglu       | 0.66/0.66/0.98 | (1) 
iPTF15lp   | 11:11:40.55 | +53:59:06.4 | 2015-02-15.34  | 20.4 | -16.1   | PTF-g | 0.04     | SN Ia    | 2015-02-17 | -6d   | FTN+FLOYDS | LCOGT/ G. Hosseinzadeh | M. Soumagnac/I. Manulis | 0.89/0.61/0.97 | (1) 
iPTF15nu   | 12:15:22.57 | +53:40:36.0 | 2015-02-17.36  | 21.4 | -17.5   | PTF-g | 0.12     | SN Ia    | 2015-03-01 | +0    | NOT+ALFOSC | F. Taddia/F. Taddia    | D. Khazov               | 0.72/0.59/0.94 | (1)    
[Dates are in UT; the estimated phase, if relevant, is with respect to peak light.]  
 

(1) SNID (Blondin & Tonry, 2007, ApJ, 666, 1024) used to estimate redshift and phase of spectrum.