Publications associées à The MBH-M∗ Relation up to z ∼ 2 through Decomposition of COSMOS-Web NIRCam Images

Publications associées (14)

CAPERS-LRD-z9: A Gas-enshrouded Little Red Dot Hosting a Broad-line Active Galactic Nucleus at z = 9.288

We present CAPERS-LRD-z9, a little red dot (LRD) that we confirm to be a z = 9.288 broad-line active galactic nucleus (BLAGN). First identified as a high-redshift LRD candidate from PRIMER NIRCam photometry, follow-up NIRSpec/PRISM spectroscopy of CAPERS-L ...

2025

The importance of nuclear star clusters for massive black hole growth and nuclear star formation in simulated low-mass galaxies

Michaela Hirschmann, Jonathan Erik Peter Petersson

Observed low-mass galaxies with nuclear star clusters (NSCs) can host accreting massive black holes (MBH). We present simulations of dwarf galaxies (M-baryon similar to 0.6-2.4x10(8)M(circle dot)) at solar mass resolution (0.5M(circle dot)

OXFORD UNIV PRESS2025

Euclid preparation: LXVII. Deep learning true galaxy morphologies for weak lensing shear bias calibration

Frédéric Courbin, Georges Meylan

To date, galaxy image simulations for weak lensing surveys usually approximate the light profiles of all galaxies as a single or double Sérsic profile, neglecting the influence of galaxy substructures and morphologies deviating from such a simplified param ...

2025

Euclid: A complete Einstein ring in NGC 6505

Frédéric Courbin, Georges Meylan, Benjamin Yvan Alexandre Clement, Javier Alejandro Acevedo Barroso

We report the discovery of a complete Einstein ring around the elliptical galaxy NGC 6505, at z = 0.042. This is the first strong gravitational lens discovered in Euclid and the first in an NGC object from any survey. The combination of the low redshift of ...

2025

PolyCLEAN: Atomic optimization for super-resolution imaging and uncertainty estimation in radio interferometry

Julien René Fageot, Matthieu Martin Jean-André Simeoni, Sepand Kashani, Adrian Thibault Etienne Jarret, Joan Rue Queralt

Context. Imaging in radio interferometry requires solving an ill-posed noisy inverse problem, for which the most adopted algorithm is the original CLEAN algorithm and its variants. Alternative explicit optimization methods have gained increasing attention, ...

EDP SCIENCES S A2025

Measurements of Inclusive and Differential Cross Sections for Top Quark Production in Association with a Z Boson in Proton-proton Collisions at √s=13 Tev

Jan Steggemann, Konstantin Androsov, Anna Mascellani, Joanna Malgorzata Wanczyk

Measurements are presented of inclusive and differential cross sections for Z boson associated production of top quark pairs (t (t) over barZ) and single top quarks (tZq or tWZ). The data were recorded in proton-proton collisions at a center-of-mass energy ...

SPRINGER2025

Coherent magnon transport in a van der Waals antiferromagnet

Jean-Philippe Ansermet

Recently developed van der Waals magnets offer a promising platform for advancing spintronics. The weak interlayer antiferromagnetic exchange coupling in van der Waals antiferromagnets allows for unique spin dynamics and control over magnons. In this study ...

AIP Publishing2025

Euclid preparation: XLIX. Selecting active galactic nuclei using observed colours

Frédéric Courbin, Georges Meylan

The Euclid space mission will cover over 14 000 deg2 with two optical and near-infrared spectro-photometric instruments, and is expected to detect around ten million active galactic nuclei (AGN). This unique data set will make a considerable impact on our ...

2024

Discovery of a dormant 33 solar-mass black hole in pre-release Gaia astrometry

Richard Irving Anderson, Mauricio Cruz Reyes

Context. Gravitational waves from black-hole (BH) merging events have revealed a population of extra-galactic BHs residing in short-period binaries with masses that are higher than expected based on most stellar evolution models-And also higher than known ...

2024

CLASSY. VIII. Exploring the Source of Ionization with UV Interstellar Medium Diagnostics in Local High-z Analogs

Adèle Marie Françoise Plat

In the current JWST era, rest-frame UV spectra play a crucial role in enhancing our understanding of the interstellar medium (ISM) and stellar properties of the first galaxies in the epoch of reionization (z > 6). Here, we compare well-known and reliable o ...

Iop Publishing Ltd2024

Euclid preparation: XXXVIII. Spectroscopy of active galactic nuclei with NISP

Frédéric Courbin, Georges Meylan

All rights reserved.The statistical distribution and evolution of key properties of active galactic nuclei (AGN), such as their accretion rate, mass, and spin, remains a subject of open debate in astrophysics. The ESA Euclid space mission, launched on July ...

2024

The H I covering fraction of Lyman Limit Systems in FIRE haloes

Lucas Tortora

Atomic hydrogen (H i) serves a crucial role in connecting galactic-scale properties such as star formation with the large-scale structure of the Universe. While recent numerical simulations have successfully matched the observed covering fraction of H i ne ...

OXFORD UNIV PRESS2024

Discovery of a Rare Group of Dwarf Galaxies in the Local Universe

Oliver Müller

We report the discovery of a rare isolated group of five dwarf galaxies located at z = 0.0086 (D = 36 Mpc). All member galaxies are star forming, blue, and gas rich, with g − r indices ranging from 0.2 to 0.6 mag, and two of them show signs of ongoing mutu ...

2024

Magnetic field morphology and evolution in the Central Molecular Zone and its effect on gas dynamics

Michaela Hirschmann, Robin Gopala Tress

The interstellar medium in the Milky Way's Central Molecular Zone (CMZ) is known to be strongly magnetised, but its large-scale morphology and impact on the gas dynamics are not well understood. We explore the impact and properties of magnetic fields in th ...

EDP SCIENCES S A2024

The <i>M</i><sub>BH</sub>-<i>M</i><sub>∗</sub> Relation up to <i>z</i> ∼ 2 through Decomposition of COSMOS-Web NIRCam Images

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CAPERS-LRD-z9: A Gas-enshrouded Little Red Dot Hosting a Broad-line Active Galactic Nucleus at z = 9.288

The importance of nuclear star clusters for massive black hole growth and nuclear star formation in simulated low-mass galaxies

Euclid preparation: LXVII. Deep learning true galaxy morphologies for weak lensing shear bias calibration

Euclid: A complete Einstein ring in NGC 6505

PolyCLEAN: Atomic optimization for super-resolution imaging and uncertainty estimation in radio interferometry

Measurements of Inclusive and Differential Cross Sections for Top Quark Production in Association with a Z Boson in Proton-proton Collisions at √s=13 Tev

Coherent magnon transport in a van der Waals antiferromagnet

Euclid preparation: XLIX. Selecting active galactic nuclei using observed colours

Discovery of a dormant 33 solar-mass black hole in pre-release Gaia astrometry

CLASSY. VIII. Exploring the Source of Ionization with UV Interstellar Medium Diagnostics in Local High-z Analogs

Euclid preparation: XXXVIII. Spectroscopy of active galactic nuclei with NISP

The H I covering fraction of Lyman Limit Systems in FIRE haloes

Discovery of a Rare Group of Dwarf Galaxies in the Local Universe

Magnetic field morphology and evolution in the Central Molecular Zone and its effect on gas dynamics