Bright NIR detections of the reddened classical nova Gaia19dum / AT2019owg from Palomar Gattini-IR
ATel #13074; K. De (Caltech), M. Hankins (Caltech), M. M. Kasliwal (Caltech), J. Sokoloski (Columbia), A. Babul (Columbia), R. M. Lau (ISAS/JAXA), M. Sharma (Columbia), R. Soria (NAOC), A. Moore (ANU), J. Soon (ANU), M. Ashley (UNSW), T. Travouillon (ANU) on behalf of the Palomar Gattini-IR team
on 4 Sep 2019; 02:34 UT
Credential Certification: Kishalay De (kde@astro.caltech.edu)
Subjects: Infra-Red, Nova
We report bright NIR detections of the classical nova AT 2019owg
classified in ATel #13068, #13070 by Palomar Gattini-IR. The data were
acquired as a part of regular survey operations of Palomar Gattini-IR,
a wide-field infrared survey telescope which scans the entire northern
sky down to 16 AB mag in J band every two nights (Moore and Kasliwal
2019).
The data were reduced using the real-time data reduction pipeline of
Palomar Gattini-IR (De et al. in prep) and photometry reported is
calibrated to the 2MASS catalog in the Vega system. The source is
first detected at a J band magnitude of ~ 8.3 on JD 2458713.79 (2019
August 18.29). We caution that this first detection is close to the
non-linearity limit of the detector. Subsequent detections with 2
night cadence show a steady fading of the source to a J mag ~ 9.95 on
2019 September 01. Contemporaneous photometry from the ZTF public
alert stream (Bellm et al. 2019) suggest a highly reddened color of g
- J ~ 9 mags, consistent with ATel #13068, #13070.
Further follow-up observations are encouraged and Palomar Gattini-IR
will continue to monitor this field as a part of regular survey
operations.
