GA-NIFS: Witnessing the complex assembly of a massive star-forming system at $z=5.7$

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Gareth C. Jones, Andrew J. Bunker, Kseniia Telikova, Santiago Arribas, Stefano Carniani | Summary: We present observations of the $zsim5.7$ Lyman-break galaxy HZ10 with the JWST/NIRSpec IFU in high and low spectral resolution (G395H, $Rsim2700$ and PRISM, $Rsim100$, respectively), as part of the GA-NIFS program. By spatially […]


Continue.. GA-NIFS: Witnessing the complex assembly of a massive star-forming system at $z=5.7$

JADES — The small blue bump in GN-z11: insights into the nuclear region of a galaxy at z=10.6

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Xihan Ji, Roberto Maiolino, Gary Ferland, Francesco D’Eugenio, Rachana Bhatawdekar | Summary: We report the detection of continuum excess in the rest-frame UV between 3000 {AA} and 3550 {AA} in the JWST/NIRSpec spectrum of GN-z11, a galaxy hosting an active galactic nucleus (AGN) at z = 10.603. […]


Continue.. JADES — The small blue bump in GN-z11: insights into the nuclear region of a galaxy at z=10.6

JADES — The small blue bump in GN-z11: insights into the nuclear region of a galaxy at z=10.6

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Xihan Ji, Xihan Ji, , , | Summary: We report the detection of continuum excess in the rest-frame UV between 3000 AA and 3550 AA in the JWST/NIRSpec spectrum of GN-z11, a luminous galaxy $z=10.603$. The shape of the continuum excess resembles a Balmer continuum but has […]


Continue.. JADES — The small blue bump in GN-z11: insights into the nuclear region of a galaxy at z=10.6

Feedback mechanisms stopping the star formation in a pair of massive galaxies in the early Universe

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Pablo G. Pérez-González, Francesco D`Eugenio, Bruno Rodríguez del Pino, Hannah Übler, Roberto Maiolino | Summary: Feedback is the key physical mechanism regulating galaxy formation. Stars in galaxies form when baryons radiatively cool down and fall into gravitational wells. Eventually, star formation quenches as gas is depleted and/or […]


Continue.. Feedback mechanisms stopping the star formation in a pair of massive galaxies in the early Universe

Accelerated quenching and chemical enhancement of massive galaxies in a $zsim4$ gas-rich halo

Kavli Affiliate: Roberto Maiolino | First 5 Authors: , , , , | Summary: Stars in galaxies form when baryons radiatively cool down and fall into gravitational wells whose mass is dominated by dark matter. Eventually, star formation quenches as gas is depleted and/or perturbed by feedback processes, no longer being able to collapse and […]


Continue.. Accelerated quenching and chemical enhancement of massive galaxies in a $zsim4$ gas-rich halo

JWST meets Chandra: a large population of Compton thick, feedback-free, and X-ray weak AGN, with a sprinkle of SNe

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Roberto Maiolino, Guido Risaliti, Matilde Signorini, Bartolomeo Trefoloni, Ignas Juodzbalis | Summary: We investigate the X-ray properties of a large sample of 71 broad line and narrow line AGN at 2<z<11 discovered by JWST in the GOODS fields, which have the deepest Chandra observations ever obtained. Despite […]


Continue.. JWST meets Chandra: a large population of Compton thick, feedback-free, and X-ray weak AGN, with a sprinkle of SNe

JWST meets Chandra: a large population of Compton thick, feedback-free, and intrinsically X-ray weak AGN, with a sprinkle of SNe

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Roberto Maiolino, Guido Risaliti, Matilde Signorini, Bartolomeo Trefoloni, Ignas Juodzbalis | Summary: We investigate the X-ray properties of a sample of 71 broad line and narrow line AGN at 2$<$z$<$11 discovered by JWST in the GOODS fields, which have the deepest Chandra observations ever obtained. Despite the […]


Continue.. JWST meets Chandra: a large population of Compton thick, feedback-free, and intrinsically X-ray weak AGN, with a sprinkle of SNe

Reconstructing the matter power spectrum with future cosmic shear surveys

Kavli Affiliate: George Efstathiou | First 5 Authors: Calvin Preston, Alexandra Amon, George Efstathiou, , | Summary: Analyses of cosmic shear typically condense weak lensing information over a range of scales to a single cosmological parameter, $S_8$. This paper presents a method to extract more information from Stage-IV cosmic shear measurements by directly reconstructing the […]


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Stochastic prior for non-parametric star-formation histories

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Jenny T. Wan, Sandro Tacchella, Benjamin D. Johnson, Kartheik G. Iyer, Joshua S. Speagle | Summary: The amount of power contained in the variations in galaxy star-formation histories (SFHs) across a range of timescales encodes key information about the physical processes which modulate star formation. Modelling the […]


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Growing a nuclear star cluster from star formation and cluster mergers: The JWST NIRSpec view of NGC 4654

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Katja Fahrion, Torsten Böker, Michele Perna, Tracy L. Beck, Roberto Maiolino | Summary: We present a detailed study of the centre of NGC4654, a Milky Way-like spiral galaxy in the Virgo cluster that has been reported to host a double stellar nucleus, thus promising a rare view […]


Continue.. Growing a nuclear star cluster from star formation and cluster mergers: The JWST NIRSpec view of NGC 4654