[ Previous | Next | ADS ]

iPTF discovery and identification of bright transients

ATel #10060; Scott Adams (California Institute of Technology), Emir Karamehmetoglu, Rupak Roy (The Oscar Klein Centre), James D. Neill, Richard Walters, Dave Cook, Thomas Kupfer, Chris Cannella, Nadejda Blagorodnova, Lin Yan, Mansi Kasliwal, Shri Kulkarni (California Institute of Technology)
on 9 Feb 2017; 06:17 UT
Credential Certification: Scott Adams (sma@astro.caltech.edu)

Subjects: Optical, Supernovae, Transient

The intermediate Palomar Transient Factory (ATel #4807) reports the discovery of the following bright transients. We report as ATel alerts all objects brighter than 19 mag. Our discoveries are reported in two filters: sdss-g and Mould-I, denoted as g and I. All magnitudes are obtained using difference image photometry based on the PTFIDE pipeline described in Masci et al. 2016.

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.

For iPTF17aal, we have obtained follow-up observations with the Double Beam spectrograph (DBSP, range 380-1000nm, spectral resolution R~1300), mounted on the Palomar 200-inch telescope.

 
Name                   | RA (J2000)  | Dec (J2000)  | Discovery date | Discovery mag | Latest date   | Latest mag | Redshift | Classification | Classification Date | Notes 
-----------_-----------|-------------|--------------|----------------|---------------|---------------|------------|----------|-----------------|---------------------|------ 
iPTF17aal (=AT2017aal) | 07:43:02.52 | +11:38:20.44 | 2017-02-01.46  | 19.07 (I)     | 2017-02-05.33 | 18.77 (g)  | 0.0600   | SN IIn          | 2017-02-08          |       
iPTF17acq (=AT2017acq) | 05:00:18.52 | +71:12:09.84 | 2017-02-04.98  | 18.81 (I)     | 2017-02-05.20 | 18.81 (g)  | 0.0040   |                 |                     |       

Notes: