VizieR Online Data Catalog: Follow-up photometry & spectroscopy of PTF14jg (Hillenbrand+, 2019)

The (intermediate) Palomar Transient Factory (iPTF) monitored the W3/W4/W5 complex in the R band beginning in the summer of 2013. A new source was identified as a candidate transient on 2014 January 24 and given the name PTF 14jg. We estimate that PTF 14jg achieved peak brightness around 2014 February 9. The photometry reported in Table 1 was obtained with the Palomar 48 inch telescope (P48) and the PTF Survey Camera as part of routine iPTF operations. The R_PTF band is approximately a Mould R filter. See Section 2 for further explanations.

Our follow-up to the dramatic optical brightening event in PTF 14jg includes photometric and spectroscopic observations, in addition to continued Palomar 48 inch R-band monitoring. Optical and near-infrared photometric data were obtained at the Palomar 60 inch telescope (ugriz) and Mount Abu 1.2m telescope (JHKs), while optical and infrared spectra were obtained at the Apache Point Observatory, Palomar Observatory, and Keck Observatory. We also acquired bluer-wavelength ultraviolet and X-ray data from UVOT on board Swift and redder-wavelength mid-infrared (Spitzer, NEOWISE) and millimeter (CARMA) observations. All follow-up observations occurred after the light-curve peak in early February of 2014. See Section 4 for details.

As summarized in Table 6, a number of telescopes and instruments were used to characterize the spectroscopic evolution of PTF 14jg as it reached its photometric peak and then faded in brightness. The spectra were obtained at the Apache Point Observatory (DIS optical spectra at R~2400, TripleSpec infrared spectrum at R~3500), Palomar Observatory (DBSP optical spectra at R~2000, TripleSpec infrared spectrum at R~3000), and Keck Observatory (HIRES optical spectra at R~34000-48000, DEIMOS optical spectrum at R~2200, MOSFIRE infrared spectrum at R~3300). See Section 4.6.

(7 data files).