Search Publications
JADES: The incidence rate and properties of galactic outflows in low-mass galaxies across 3 < z < 9
Chevallard, Jacopo; Maseda, Michael V.; Parlanti, Eleonora +30 more
We investigate the incidence and properties of ionised gas outflows in a sample of 52 galaxies with stellar masses between 107 M⊙ and 109 M⊙ observed with ultra-deep JWST/NIRSpec MSA spectroscopy as part of the JWST Advanced Deep Extragalactic Survey (JADES). The high-spectral resolution (R2700) NIRSpec …
Inside the bubble: exploring the environments of reionisation-era Lyman-α emitting galaxies with JADES and FRESCO
Chevallard, Jacopo; Carniani, Stefano; Übler, Hannah +35 more
We present a study of the environments of 17 Lyman-α emitting galaxies (LAEs) in the reionisation-era (5.8 < z < 8) identified by JWST/NIRSpec as part of the JWST Advanced Deep Extragalactic Survey (JADES). Unless situated in sufficiently (re)ionised regions, Lyman-α emission from these galaxies would be strongly absorbed by neutral gas in t…
Super-early JWST galaxies, outflows, and Lyα visibility in the Epoch of Reionization
Ferrara, A.
The overabundance of super-early (redshift z > 10) luminous (MUV < −20) blue galaxies detected by JWST has been explained as being due to negligible dust attenuation in these systems. We show that this model correctly reproduces the UV luminosity function at z > 10 and the star formation rate (SFR) density evolution. The model …
PDRs4All. IV. An embarrassment of riches: Aromatic infrared bands in the Orion Bar
Hartigan, Patrick; Zhang, Yong; Gordon, Karl D. +136 more
Context. Mid-infrared observations of photodissociation regions (PDRs) are dominated by strong emission features called aromatic infrared bands (AIBs). The most prominent AIBs are found at 3.3, 6.2, 7.7, 8.6, and 11.2 µm. The most sensitive, highest-resolution infrared spectral imaging data ever taken of the prototypical PDR, the Orion Bar, have b…
Improving the open cluster census. III. Using cluster masses, radii, and dynamics to create a cleaned open cluster catalogue
Reffert, Sabine; Hunt, Emily L.
Context. The census of open clusters has exploded in size thanks to data from the Gaia satellite. However, it is likely that many of these reported clusters are not gravitationally bound, making the open cluster census impractical for many scientific applications.
Aims: We aim to test different physically motivated methods for distinguishing …
GA-NIFS: JWST discovers an offset AGN 740 million years after the big bang
Pérez-González, Pablo G.; Grogin, Norman A.; Charlot, Stéphane +24 more
A surprising finding of recent studies is the large number of Active Galactic Nuclei (AGN) associated with moderately massive black holes (
Star formation shut down by multiphase gas outflow in a galaxy at a redshift of 2.45
Conroy, Charlie; Johnson, Benjamin D.; Belli, Sirio +15 more
Large-scale outflows driven by supermassive black holes are thought to have a fundamental role in suppressing star formation in massive galaxies. However, direct observational evidence for this hypothesis is still lacking, particularly in the young universe where star-formation quenching is remarkably rapid1-3, thus requiring effective …
Extreme emission line galaxies detected in JADES JWST/NIRSpec - I. Inferred galaxy properties
Charlot, Stéphane; Chevallard, Jacopo; Maseda, Michael V. +33 more
Extreme emission line galaxies (EELGs) exhibit large equivalent widths (EW) in their rest-optical emission lines ([O III]
The ultraviolet continuum slopes of high-redshift galaxies: evidence for the emergence of dust-free stellar populations at z > 10
Bowler, R. A. A.; Cullen, F.; McLure, R. J. +11 more
We present an analysis of the ultraviolet (UV) continuum slopes (β) for a sample of 172 galaxy candidates at 8 < zphot < 16 selected from a combination of JWST NIRCam imaging and COSMOS/UltraVISTA ground-based near-infrared imaging. Focusing primarily on a new sample of 121 galaxies at ⟨z⟩ ≃ 11 selected from ≃ 320 arcmin2
A pulsar in a binary with a compact object in the mass gap between neutron stars and black holes
Cadelano, Mario; Pallanca, Cristina; Freire, Paulo C. C. +22 more
Some compact objects observed in gravitational wave events have masses in the gap between known neutron stars (NSs) and black holes (BHs). The nature of these mass gap objects is unknown, as is the formation of their host binary systems. We report pulsar timing observations made with the Karoo Array Telescope (MeerKAT) of PSR J0514‑4002E, an eccen…