[ Previous | Next | ADS ]

iPTF report of bright transients

ATel #10080; Chris Cannella (California Institute of Technology), Daniel Kuesters (Humboldt University), Raphael Ferretti (The Oscar Klein Centre), Nadejda Blagorodnova, Scott Adams, Thomas Kupfer, James D. Neill, Richard Walters, Lin Yan, Shri Kulkarni (California Institute of Technology)
on 16 Feb 2017; 01:30 UT
Credential Certification: Scott Adams (sma@astro.caltech.edu)

Subjects: Optical, Supernovae, Transient

The intermediate Palomar Transient Factory (iPTF; ATel #4807) reports the following bright (<19 mag) transients. iPTF employs three filters: sdss-g, Mould-R, and Mould-I, denoted as g, R, and I. The reported 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 a subset of transients, we have obtained follow-up observations with the Spectral Energy Distribution Machine (SEDM) (range 350-950nm, spectral resolution R~100) mounted on the Palomar 60-inch (P60) telescope. The approved classification (and/or subsequent) spectra are made publicly available through WISeREP (Yaron & Gal-Yam 2012).

 
Name                  | RA (J2000)  | Dec (J2000)  | Discovery date | Discovery mag | Latest date   | Latest mag | Redshift | Classificiation | Classification Date | Notes 
----------------------|-------------|--------------|----------------|---------------|---------------|------------|----------|-----------------|---------------------|------ 
iPTF17atf (AT2017atf) | 07:58:33.37 | +11:55:21.98 | 2017-02-14.01  | 18.55 (R)     | 2017-02-14.29 | 18.21 (R)  | 0.0004   |                 |                     |       
iPTF17aub (AT2017aub) | 06:40:24.69 | +64:33:02.77 | 2017-02-15.18  | 17.47 (g)     | 2017-02-15.30 | 17.40 (I)  |          |                 |                     |