Pieter van Dokkum

Feb 14, 2024 | nature.com | Lukas J. Furtak |Ivo Labbe |Adi Zitrin |Anna de Graaff |Rachel Bezanson |Gabriel Brammer | +14 more

AbstractEarly JWST observations have uncovered a new population of red sources that might represent a previously overlooked phase of supermassive black hole growth1−−3. One of the most intriguing examples is an extremely red, point-like object that was found to be triply-imaged by the strong lensing (SL) cluster Abell 27444. Here we present deep JWST/NIRSpec observations of this object, Abell2744-QSO1.

Oct 19, 2023 | nature.com | Pieter van Dokkum |Gabriel Brammer |Bingjie Wang

AbstractOne of the surprising results from the Hubble Space Telescope was the discovery that many of the most massive galaxies at redshift z ≈ 2 are very compact, having a half-light radius of only 1−2 kpc. The interpretation is that massive galaxies formed inside out, with their cores largely in place by z ≈ 2 and approximately half of their present-day mass added later through minor mergers.

Sep 26, 2023 | fotos.europapress.es | Pieter van Dokkum

26/09/2023- Zaragoza Zaragoza.- El Premio Criticón, galardón literario dirigido al ámbito escolar, cuenta con más de mil inscritos

Apr 4, 2023 | nature.com | Pieter van Dokkum

Long-exposure spectra taken with the James Webb Space Telescope (JWST) reveal the most distant galaxies ever observed — back to a time when the Universe was only 2% of its present age. Largely owing to several expertly designed programmes with open data access3,4 the first six months of JWST science operations have been truly extraordinary, and these are not the first, or even the most distant, JWST-discovered galaxies that have been announced.