VizieR Online Data Catalog: X-ray mass segregation effect in GCs. IV. (Cheng+, 2020)

We used the Chandra Interactive Analysis Observations (CIAO, version 4.11) and the Chandra Calibration Database (version 4.8.4) to reprocess the data. By setting the ObsID13726 as the reference frame, we corrected the relative astrometry among the four observations, and then merged them into master event files using the CIAO tool merge_obs. Three groups of images have been created in soft (0.5-2keV), hard (2-8keV), and full (0.5-8keV) bands and with a bin size of 0.5, 1, and 2 pixels, respectively. These images are used for detecting X-ray sources in this work.

(1 data file).