VizieR Online Data Catalog: Microlensing event rate in the GC. I. UKIRT obs. (Wen+, 2023)

The UKIRT microlensing survey data were taken using the Wide Field Camera with a pixel scale of 0.4" and a field of view of about 0.8deg². The UKIRT microlensing survey fields from 2015-2019 are summarized in Figure 1. In total, the five-year-long survey produced 100.5 million light curves for ~66 million targets (UKIRT Microlensing Team 2019, doi: 10.26133/NEA7), with each target yielding one light curve during annual observations. We download all the light-curve products from the UKIRT Microlensing Survey website. The majority of the survey targets have magnitudes brighter than 18 in both the H and K band, with the photometric precision of 0.01-0.1mag. See Section 2.

During 2015-2019, the OGLE-IV and MOA-II surveys conducted the bulge surveys, and since 2016 the KMTNet survey has been conducting its regular bulge survey. To double check our microlensing event search, we crossmatch our UKIRT events with the OGLE, MOA-II, and KMTNet events. Here we only check 2017-2019 events. See Section 4.

(2 data files).