Near-infrared observation of MAXI J0637-430
K. L. Murata, R. Adachi,  N. Kawai, K. Miyakawa (Tokyo Tech),  K. Morihana (Nagoya U), T. Nagayama (Kagoshima U), K. Shiraishi, M. Oeda, K. Iida, S. Niwano, F. Ogawa, S. Toma, R. Hosokawa, Y. Yatsu (Tokyo Tech)
On November 14, we observed the field of the optical counterpart (Atel #13257, #13260, #13276, #13278, #13291) of the new X-ray transient MAXI J0637-430 (discovered by the MAXI/GSC, Atel #13256) with the near-infrared (J, H, Ks) simultaneous imaging camera SIRIUS attached to 1.4 m telescope IRSF (InfraRed Survey Facility) in Sutherland observatory, South Africa. The observation were performed from 2019-11-14 21:23 UTC to 21:47. We detected a near-infrared source at the position of the optical counterpart in the combined images whose total exposure time is nearly 700 sec. The magnitudes are 17.40 +/- 0.01, 17.69 +/- 0.02 and 17.96 +/- 0.05 in J, H and Ks band, respectively. Given magnitudes are calibrated against 2MASS point sources in the field and are expressed in the AB system.
infra-red,optical,x-ray,black hole,transient