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iPTF discoveries of recent type Ia supernovae

ATel #8080; S. Papadogiannakis, R. Ferretti, C. Fremling, L. Hangard, E. Karamehmetoglu, A. Nyholm, T. Petrushevska, R. Roy (OKC), A. De Cia, P. Vreeswijk, A. Horesh, I. Manulis, I. Sagiv, A. Rubin, O. Yaron, G. Leloudas, D. Khazov, M. Soumagnac, S. Knezevic (Weizmann), S. B. Cenko (NASA/GSFC), J. Capone (University of Maryland), M. Bartakke on behalf of the intermediate Palomar Transient Factory
on 22 Sep 2015; 09:48 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.

 
 
 
Name      | RA (J2000)   | Dec (J2000)  | Discovery date | Mag.  | Abs.Mag. | Band  | Redshift | Phase | Type  | Spec. date | Instrument    | Observers/Reducers                | Scanner/s   | RB2/RB4/RB5    | Notes 
iPTF15cma | 01:32:33.109 | +42:38:34.69 | 2015-08-21.48  | 20.34 | -17.55   | PTF-g | 0.084    | -6.6  | SN Ia | 2015-09-09 | DCT           | S.B. Cenko & J. Capone/S.B. Cenko | I. Manulis  | 0.37/0.65/0.77 | (1) 
iPTF15cpp | 00:20:28.228 | -01:03:40.73 | 2015-09-05.36  | 18.28 | -18.83   | PTF-g | 0.064    | -7.5  | SN Ia | 2015-09-08 | DCT           | S.B. Cenko & J. Capone/S.B. Cenko | M. Bartakke | 0.67/0.71/0.86 | (1) (2) 
 
[Dates are in UT; the estimated phase is days with respect to peak light.] 

(1) Classification and phase obtained from SNID (Blondin & Tonry, 2007, ApJ, 666, 1024) (2) Found as part of an outreach event "Fysik i Kungsträdgården" in central Stockholm