Near-infrared photometry of AT2019wey using Kanata Telescope
ATel #15824; Ryosuke Sazaki, Makoto Uemura (Hiroshima U.), Poshak Gandhi (U. of Southampton)
on 24 Dec 2022; 11:42 UT
Credential Certification: Makoto Uemura (uemuram@hiroshima-u.ac.jp)
Subjects: Infra-Red, Binary, Black Hole, Neutron Star, Transient
Referred to by ATel #: 16197
AT2019wey is an optical transient and likely X-ray binary (Tonry et al. 2019, TNSTR, 2019-2553). This object is currently at the brightest ever observed in X-ray (ATel #15776). We observed this object on 2022 December 20 in the near-infrared bands (J , H and Ks) using the
Hiroshima Optical and Near-InfraRed camera (HONIR; Akitaya et al. 2014, Proc. SPIE 9147, 91474) attached to the 1.5-m Kanata telescope.
The measured magnitudes (AB system) are:
UT | Mag | Err | Filter
20.521 | 16.18 | 0.16 | J
20.527 | 16.38 | 0.10 | H
20.533 | 16.03 | 0.17 | Ks
The near-infrared fluxes are calibrated by nearby stars with the Two Micron All Sky Survey (2MASS) catalog (Skrutskie et al. 2006, AJ, 131, 2, 1163).
These data show that the object stays active in NIR, in addition to the optical and the radio (ATel #15816)
