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MAST Staff - 2023 Jul 28


  • FRESCO, the First Reionization Epoch Spectroscopically Complete Observations program, consists of JWST spectroscopic and imaging observations designed to optimally cover the two CANDELS/Deep regions. These fields, in the GOODS-South and North fields, are among the most valuable extragalactic legacy fields in the full sky. This first release consists of NIRCam medium-band images in two short-wavelength filters that extend the space-based legacy data in these fields to 1.8 and 2.1 μm down to 28.3 mag. These data improve the UV spectral slope measurement of z > 7 galaxies and, at lower redshift, allow the community to push rest-frame optical imaging analyses beyond the peak of cosmic star formation, from z ~ 2.5 to beyond z ~ 4. The FRESCO collection also includes deep mosaics of Hubble images taken in the original GOODS-N/S, HUDF, CANDELS, HUDF09/12, UVUDF, HDUV, and other programs. These mosaics are registered to the JWST mosaics and are of the same scale and footprint. View FRESCO Collection Page >
  • FUVS, the Fireworks Ultraviolet Survey, presents a new catalog of resolved stellar photometry from Hubble Space Telescope near-UV imaging of NGC 6946, a nearby star-forming spiral galaxy with 10 supernovae observed in the past century. The catalog data was produced from high spatial resolution, near-UV images in Hubble Space Telescope's WFC3/UVIS F336W and F275W filters. View FUVS Collection Page > 
  • The GLASS-JWST program consists of images in 8 IR filters (F090W, F115W, F150W, F200W, F277W, F356W, F410W, and F444W) and a multi-wavelength photometric catalog based on all of the JWST NIRCam observations obtained in the region of the Abell 2744 galaxy cluster. These products include data from two other programs: UNCOVER (GO-2561), and DD-2756. The observed area in the NIRCam wide-band filters - covering the central and extended regions of the cluster, as well as new parallel fields - is 46.5 arcmin2 in total. The multi-band catalog includes all NIRCam and available HST data, and is intended to enable early scientific investigations. The catalog is optimized for the study of faint galaxies: it contains 24,389 sources, with a 5σ limit in the F444W band ranging from 28.5 to 30.5 AB mag. View GLASS-JWST Collection Page > 
  • LARS, the Lyman-α Reference Sample, is a set of HST observations of 45 star-forming galaxies at redshifts 0.03 to 0.24. It includes reduced images, line and galaxy property maps, and tables of photometric measurements. The data used mainly come from the two LARS HST imaging programs (PIDs: 12310 and 13483). Various instruments (ACS/SBC, ACS/WFC, and WFC3/UVIS) and filters have been used to image the Lyman-α/Hα/Hβ emission and characterize the stellar populations. Apart from the reduced images, the collection also contains maps of emission lines and of derived physical quantities such as stellar age, extinction, and mass for the galaxies. In addition, the collection contains tables with global photometry of the galaxies and tables with surface brightness profiles for each galaxy. View LARS Collection Page > 


  • REFERENCE_ATLASES presents catalogs and spectral atlases that have been prepared as inputs to the synthetic photometry software package pysynphot. This upgrade brings new STIS NUVMAMA Synphot throughput files, delivered to support the ETC 31.2 release. The underlying time-dependent sensitivity (TDS) file was updated with recent STIS monitoring data from program 16960.View REFERENCE_ATLASES Collection Page > 
  • TICA quick-look, calibrated TESS full-frame images from Sector 67, Orbit 1, Parts A&B are now available. View TICA Collection Page >
  • TGLC, PSF-based light curves for stars down to 16th magnitude in TESS Sector 5 are now available via the MAST Portal and astroquery.mast. This Sector adds 2,582,658 new light curves to the HLSP collection. View TGLC Collection Page >
  • QLP calibrated TESS light curves for Sectors 58 & 59 are now available at MAST. This release adds 1,060,414 light curves to the collection. View QLP Collection Page >



28 yellow boxes, in groups of two, showing the pointings of the FUVS survey
Fig. 1: The yellow boxes show the 14 pointings of the Fireworks UltraViolet Survey overlaid on a GALEX NUV image from the GALEX Nearby Galaxies Survey. The magenta thumbnail shows a cutout of FUVS in filter F336W.


Fig. 2: Footprint on the sky of the FRESCO survey. FRESCO covers the two CANDELS/Deep regions in the GOODS-S and -N fields, which are among the most valuable extragalactic legacy fields in the full sky. Among others, the FRESCO fields overlap with the original HUDF/XDF. The FRESCO mosaics were obtained in a 4x2 mosaic with partial overlap for optimal wavelength coverage. The total area amounts to 7.3x8.5 arcmin2 both with grism spectroscopy and medium band imaging, which further enhances the legacy value of these fields.



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