VizieR Online Data Catalog: SMACS J0723.3-7327 eROSITA and Chandra images (Liu+, 2023)

The eROSITA data are obtained during the all-sky survey (eRASS) from December 2019 to February 2022. SMACS J0723.3-7327 was scanned five times in the first five all-sky surveys (eRASS:5). The total effective exposure after correcting for vignetting effect is ~4.4ks. We note that the exposure on SMACS J0723.3-7327 is significantly larger than the average depth of eRASS, because it lies close to the south ecliptic pole of the survey. The Chandra observation (ObsID: 15296, PI: S. Murray) was performed in April 2014, with a cleaned exposure time of 16.5ks.

The reduction of Chandra data is performed using the software CIAO v4.14, with the latest release of the Chandra Calibration Database at the time of writing (CALDB v4.9). Time intervals with a high background level are filtered out by performing a 2 clipping of the light curve in the 2.3-7.3keV band source-free image. The total cleaned exposure time after deflare is 16.5ks. Point sources within the field of view (FOV) were identified with wavdetect on the Chandra 0.5-7keV band image, checked visually, and eventually masked. Gaps between the CCD chips are also masked.

(2 data files).