Search Publications
Missions
Journals
Publication Years
Gas condensation in brightest group galaxies unveiled with MUSE. Morphology and kinematics of the ionized gas
Godard, B.; Gaspari, M.; Babul, A. +18 more
The origin of the cold gas in central galaxies in groups is still a matter of debate. We present Multi-Unit Spectroscopic Explorer (MUSE) observations of 18 optically selected local (z ≤ 0.017) brightest group galaxies (BGGs) to study the kinematics and distribution of the optical emission-line gas. MUSE observations reveal a distribution of gas m…
H α morphologies of star clusters in 16 LEGUS galaxies: Constraints on H II region evolution time-scales
Boquien, M.; Calzetti, D.; Adamo, A. +14 more
The analysis of star cluster ages in tandem with the morphology of their H II regions can provide insight into the processes that clear a cluster's natal gas, as well as the accuracy of cluster ages and dust reddening derived from Spectral Energy Distribution (SED) fitting. We classify 3757 star clusters in 16 nearby galaxies according to their H …
The galaxy group NGC 507: Newly detected AGN remnant plasma transported by sloshing
Simionescu, A.; Brunetti, G.; Gastaldello, F. +15 more
Jets from active galactic nuclei (AGN) are known to recurrently enrich their surrounding medium with mildly relativistic particles and magnetic fields. Here, we present a detailed multi-frequency analysis of the nearby (z = 0.01646) galaxy group NGC 507. In particular, we present new high-sensitivity and high-spatial-resolution radio images in the…
ATOMIUM: ALMA tracing the origins of molecules in dust forming oxygen rich M-type stars. Motivation, sample, calibration, and initial results
Waters, L. B. F. M.; Menten, K. M.; Sahai, R. +33 more
This overview paper presents ATOMIUM, a Large Programme in Cycle 6 with the Atacama Large Millimeter/submillimeter Array (ALMA). The goal of ATOMIUM is to understand the dynamics and the gas phase and dust formation chemistry in the winds of evolved asymptotic giant branch (AGB) and red supergiant (RSG) stars. A more general aim is to identify che…
Early JWST Imaging Reveals Strong Optical and NIR Color Gradients in Galaxies at z 2 Driven Mostly by Dust
van Dokkum, Pieter; Heintz, Kasper E.; Bezanson, Rachel +7 more
Recent studies have shown that galaxies at cosmic noon are redder in the center and bluer in the outskirts, mirroring results in the local universe. These color gradients could be caused by gradients in either the stellar age or dust opacity; however, distinguishing between these two causes is impossible with rest-frame optical photometry alone. H…
The MUSE Extremely Deep Field: Evidence for SFR-induced cores in dark-matter dominated galaxies at z ≃ 1
Bacon, Roland; Brinchmann, Jarle; Contini, Thierry +14 more
Context. Disc-halo decompositions z = 1 − 2 star-forming galaxies (SFGs) at z > 1 are often limited to massive galaxies (M⋆ > 1010 M⊙) and rely on either deep integral field spectroscopy data or stacking analyses.
Aims: We present a study of the dark-matter (DM) content of nine z ≈ 1 SFGs selected among …
The MUSE eXtremely Deep Field: Individual detections of Lyα haloes around rest-frame UV-selected galaxies at z ≃ 2.9-4.4
Bacon, Roland; Tresse, Laurence; Blaizot, Jérémy +15 more
Hydrogen Lyα haloes (LAHs) are commonly used as a tracer of the circumgalactic medium (CGM) at high redshifts. In this work, we aim to explore the existence of Lyα haloes around individual UV-selected galaxies, rather than around Lyα emitters (LAEs), at high redshifts. Our sample was continuum-selected with F775W ≤ 27.5, and spectroscopic redshift…
Low-energy cosmic rays: regulators of the dense interstellar medium
Gabici, Stefano
Low-energy cosmic rays (up to the GeV energy domain) play a crucial role in the physics and chemistry of the densest phase of the interstellar medium. Unlike interstellar ionising radiation, they can penetrate large column densities of gas, and reach molecular cloud cores. By maintaining there a small but not negligible gas ionisation fraction, th…
Dust depletion of metals from local to distant galaxies. I. Peculiar nucleosynthesis effects and grain growth in the ISM
Noterdaeme, Pasquier; Heintz, Kasper E.; Jermann, Iris +8 more
Large fractions of metals are missing from the observable gas-phase in the interstellar medium (ISM) because they are incorporated into dust grains. This phenomenon is called dust depletion. It is important to study the depletion of metals into dust grains in the ISM to investigate the origin and evolution of metals and cosmic dust. We characteriz…
Discovery of a Double-detonation Thermonuclear Supernova Progenitor
Green, Matthew J.; Rusholme, Ben; Bellm, Eric C. +12 more
We present the discovery of a new double-detonation progenitor system consisting of a hot subdwarf B (sdB) binary with a white dwarf companion with a P orb = 76.34179(2) minutes orbital period. Spectroscopic observations are consistent with an sdB star during helium core burning residing on the extreme horizontal branch. Chimera light c…