Swift observation of Nova Ophiuchi 2018 No.2 = PNV J17140261-2849237 = TCP J17140253-2849233

ATel #11409; K. Sokolovsky (IAASARS NOA/ASC Lebedev/SAI MSU)
on 12 Mar 2018; 17:08 UT
Credential Certification: Kirill Sokolovsky (kirx@scan.sai.msu.ru)

Subjects: Ultra-Violet, X-ray, Nova

The nova candidate PNV J17140261-2849237 = TCP J17140253-2849233 was discovered by H. Nishimura, T. Kojima, K. Nishiyama and F. Kabashima. A. Takao reports the transient (9.5mag) visible at unfiltered images obtained on 2018-03-10.753 UT. Spectroscopic observations with the 2m Liverpool Telescope confirmed the transient to be a Fe II type nova (ATel #11398).

Swift observed the nova for 2.0ks on 2018-03-12.217, 35 hours after the first optical detection. The XRT found no X-ray source at the nova position with an upper limit of 0.002 cts/s. Assuming power law emission with the photon index of 2 and full Galactic HI column density in the source direction (2.45x10^21 cm^-2) this translates to the unabsorbed 0.3-10 keV flux limit of 1.3x10^-13 ergs/cm^2/s.

The simultaneously obtained UVOT image is distorted by a tracking error preventing precision astrometry and photometry, but the bright (W2=13.03+/-0.02) ultraviolet source is clearly visible at the reported nova position.

We thank the Neil Gehrels Swift Observatory team and PI, Brad Cenko, for rapid execution of this ToO observation.

CBAT Transient Object Followup Reports for TCP J17140253-2849233