GA-NIFS: An extremely nitrogen-loud and chemically stratified galaxy at $zsim 5.55$

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Xihan Ji, Hannah Übler, Roberto Maiolino, Francesco D’Eugenio, Santiago Arribas | Summary: We report the chemical abundance pattern of GS_3073, a galaxy at $z=5.55$ which was previously confirmed to host an overmassive active black hole, by leveraging the detection of about 40 emission lines, combining JWST/NIRSpec observations […]


Continue.. GA-NIFS: An extremely nitrogen-loud and chemically stratified galaxy at $zsim 5.55$

GA-NIFS: An extremely nitrogen-loud and chemically stratified galaxy at $zsim 5.55$

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Xihan Ji, Hannah Übler, Roberto Maiolino, Francesco D’Eugenio, Santiago Arribas | Summary: We report the chemical abundance pattern of GS_3073, a galaxy at $z=5.55$ which was previously confirmed to host an overmassive active black hole, by leveraging the detection of about 40 emission lines, combining JWST/NIRSpec observations […]


Continue.. GA-NIFS: An extremely nitrogen-loud and chemically stratified galaxy at $zsim 5.55$

Resolving the nature and putative nebular emission of GS9422: an obscured AGN without exotic stars

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Sandro Tacchella, William McClymont, Jan Scholtz, Roberto Maiolino, Xihan Ji | Summary: Understanding the sources that power nebular emission in high-redshift galaxies is fundamentally important not only for shedding light onto the drivers of reionisation, but to constrain stellar populations and the growth of black holes. Here […]


Continue.. Resolving the nature and putative nebular emission of GS9422: an obscured AGN without exotic stars

Cosmic Microwave Background Signatures from Current-carrying Cosmic Strings

Kavli Affiliate: E. P. S. Shellard | First 5 Authors: I. Yu. Rybak, C. J. A. P. Martins, Patrick Peter, E. P. S. Shellard, | Summary: We continue our studies of the evolution and cosmological consequences of current-carrying cosmic string networks, described by a charge-velocity-dependent one scale (CVOS) model. We present a detailed calculation of […]


Continue.. Cosmic Microwave Background Signatures from Current-carrying Cosmic Strings

Cosmic Microwave Background Signatures from Current-carrying Cosmic Strings

Kavli Affiliate: E. P. S. Shellard | First 5 Authors: I. Yu. Rybak, C. J. A. P. Martins, Patrick Peter, E. P. S. Shellard, | Summary: We continue our studies of the evolution and cosmological consequences of current-carrying cosmic string networks, described by a charge-velocity-dependent one scale (CVOS) model. We present a detailed calculation of […]


Continue.. Cosmic Microwave Background Signatures from Current-carrying Cosmic Strings

No evidence of AGN features in the nuclei of Arp 220 from JWST/NIRSpec IFS

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Michele Perna, Santiago Arribas, Isabella Lamperti, Miguel Pereira-Santaella, Lorenzo Ulivi | Summary: Arp 220 is the nearest ULIRG; it shows evidence of 100 pc-scale molecular outflows likely connected with galaxy-scale outflows traced by ionised and neutral gas. The two highly obscured nuclei of Arp 220 are the […]


Continue.. No evidence of AGN features in the nuclei of Arp 220 from JWST/NIRSpec IFS

Spatially resolved emission lines in galaxies at $4leq z < 10$ from the JADES survey: evidence for enhanced central star formation

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Roberta Tripodi, Francesco D’Eugenio, Roberto Maiolino, Mirko Curti, Jan Scholtz | Summary: We present the first statistical investigation of spatially resolved emission-line properties in a sample of 63 low-mass galaxies at $4leq z<10$, using JWST/NIRSpec MSA data from the JWST Advanced Deep Extragalactic (JADES) survey focusing on […]


Continue.. Spatially resolved emission lines in galaxies at $4leq z < 10$ from the JADES survey: evidence for enhanced central star formation

The NIRSpec Wide GTO Survey

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Michael V. Maseda, Anna de Graaff, Marijn Franx, Hans-Walter Rix, Stefano Carniani | Summary: The Near-infrared Spectrograph (NIRSpec) on the James Webb Space Telescope is uniquely suited to studying galaxies in the distant Universe with its combination of multi-object capabilities and sensitivity over a large range in […]


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A dormant, overmassive black hole in the early Universe

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Ignas Juodžbalis, Roberto Maiolino, William M. Baker, Sandro Tacchella, Jan Scholtz | Summary: Recent observations have found a large number of supermassive black holes already in place in the first few hundred million years after Big Bang. The channels of formation and growth of these early, massive […]


Continue.. A dormant, overmassive black hole in the early Universe