James Webb Space Telescope Feed Post
Harvard ADS: VizieR Online Data Catalog: GLASS-JWST Early Release Science Prog. II. ACO 2744 (Paris+, 2023)
Paper abstract: The NIRCam data analyzed in this paper are taken from three programs that targeted the z=0.308 cluster Abell 2744 and its surroundings. The first set of NIRCam images was taken as part of the GLASS-JWST survey (T22; Treu+ 2022ApJ...935..110T), in parallel to primary NIRISS observations on 2022 June 28-29 and to NIRSpec observations on 2022 November 10-11. We refer to these data sets as GLASS1 and GLASS2, or collectively as GLASS, both of which consist of imaging in seven broadband filters from F090W to F444W. We note that the final pointing is different from the scheduled one presented by T22 due to the adoption of an alternate position angle (PA) during the NIRSpec spectroscopic observations (see Section 2.1).
The second set of NIRCam observations considered here was taken as part of the UNCOVER program (Bezanson+ 2024ApJ...974...92B), which targets the center of the A2744 cluster and the immediate surroundings. These images are composed of four pointings and result in a relatively homogeneous depth, as discussed below. They were taken on November 2-4-7 and 15 and adopt the same filter set as GLASS-JWST, except for the addition of the F410M filter instead of F090W. Finally, the Director's Discretionary Time program 2756 (PI: W. Chen; DDT hereafter) also obtained NIRCam imaging data in the center of A2744 on 2022 October 20 and December 6 (UT). The data obtained by these three NIRCam programs are taken with eight different filters (F090W, F115W, F150W, F200W, F277W, F356W, F410M, and F444W). We also exploit other HST publicly available programs that have targeted the area, including the available HST ACS and WFC3 data in the F435W, F606W, F775W, and F814W (ACS) and F105W, F125W, F140W, and F160W (WFC3) bands, to expand the coverage of the visible-to-IR wavelength range. We have first used SExtractor to detect sources in the F444W band and measure their total flux in the same F444W band. We release catalogues computed in 2x, 3x, 8x and 16x PSF apertures (diameter, which correspond to 0.28", 0.42", 1.12" and 2.24") and in the isophotal (segmentation) aperture. Note that all files contain the same 24389 objects in the same order. (5 data files).