A galaxy-based JWST search finds 13 broad-line AGNs in massive galaxies at z~3-5 with normal black hole-to-stellar mass ratios near the local value, indicating that overmassive black holes are not the only early pathway.
Early results from GLASS-JWST. II: NIRCam extra-galactic imaging and photometric catalog
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abstract
We present the reduced images and multi-wavelength catalog of the first JWST NIRCam extra-galactic observations from the GLASS Early Release Science Program, obtained as coordinated parallels of the NIRISS observations of the Abell 2744 cluster. Images in seven bands (F090W, F115W, F150W, F200W, F277W, F356W, F444W) have been reduced using an augmented version of the official JWST pipeline; we discuss the procedures adopted to remove or mitigate defects in the raw images. We obtain a multi--band catalog by means of forced aperture photometry on PSF-matched images at the position of F444W-detected sources. The catalog is intended to enable early scientific investigations, and it is optimized for faint galaxies; it contains 6368 sources, with limiting magnitude 29.7 at 5$\sigma$ in F444W. We release both images and catalog in order to allow the community to familiarize with the JWST NIRCam data and evaluate their merit and limitations given the current level of knowledge of the instrument.
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A prevalent population of normal-mass central black holes in high-redshift massive galaxies
A galaxy-based JWST search finds 13 broad-line AGNs in massive galaxies at z~3-5 with normal black hole-to-stellar mass ratios near the local value, indicating that overmassive black holes are not the only early pathway.