Search Publications
Evolution of the star formation rate and ΣSFR of galaxies at cosmic morning (4 < z < 10)
Kartaltepe, J. S.; Franco, M.; Dickinson, M. +28 more
The galaxy-integrated star formation rate (SFR) surface density measurement (ΣSFR) has been proposed as a valuable diagnostic of the mass accumulation in galaxies given it is more tightly related to the physics of star formation and stellar feedback than other indicators. In this work, we assembled a statistical sample of 230 galaxies o…
Astrophysical constraints on decaying dark gravitons
Obied, Georges; Law-Smith, Jamie A. P.; Prabhu, Anirudh +1 more
In the dark dimension scenario, which predicts an extra dimension of micron scale, dark gravitons (KK modes) are a natural dark matter candidate. In this paper, we study observable features of this model. In particular, their decay to standard matter fields can distort the CMB and impact other astrophysical signals. Using this we place bounds on t…
A benchmark JWST near-infrared spectrum for the exoplanet WASP-39 b
Zhang, X.; Heng, K.; May, E. M. +77 more
Observing exoplanets through transmission spectroscopy supplies detailed information about their atmospheric composition, physics and chemistry. Before the James Webb Space Telescope (JWST), these observations were limited to a narrow wavelength range across the near-ultraviolet to near-infrared, alongside broadband photometry at longer wavelength…
The One-hundred-deg2 DECam Imaging in Narrowbands (ODIN): Survey Design and Science Goals
Dey, Arjun; Gronwall, Caryl; Jeong, Woong-Seob +40 more
We describe the survey design and science goals for One-hundred-deg2 DECam Imaging in Narrowbands (ODIN), a NOIRLab survey using the Dark Energy Camera (DECam) to obtain deep (AB ∼ 25.7) narrowband images over an unprecedented area of sky. The three custom-built narrowband filters, N419, N501, and N673, have central wavelengths of 419, …
Asteroseismic modelling of fast rotators and its opportunities for astrophysics
Aerts, Conny; Tkachenko, Andrew
Rotation matters for the life of a star. It causes a multitude of dynamical phenomena in the stellar interior during a star's evolution, and its effects accumulate until the star dies. All stars rotate at some level, but most of those born with a mass higher than 1.3 times the mass of the Sun rotate rapidly during more than 90% of their nuclear li…
The structure of massive star-forming galaxies from JWST and ALMA: Dusty, high-redshift disc galaxies
Smail, Ian; Brammer, Gabe; Swinbank, A. M. +15 more
We present an analysis of the JWST NIRCam and MIRI morphological and structural properties of 80 massive (log10(M*[M⊙]) = 11.2 ± 0.1) dusty star-forming galaxies at z = 2.7‑0.7+1.2, identified as sub-millimetre galaxies (SMGs) by ALMA, which have been observed as part of the JWST PRIMER projec…
Two Distinct Classes of Quiescent Galaxies at Cosmic Noon Revealed by JWST PRIMER and UNCOVER
Dickinson, Mark; Giavalisco, Mauro; Grogin, Norman A. +31 more
We present a measurement of the low-mass quiescent size–mass relation at cosmic noon (1 < z < 3) from the JWST PRIMER and UNCOVER treasury surveys, which highlights two distinct classes of quiescent galaxies. While the massive population is well studied at these redshifts, the low-mass end has been previously underexplored due to a lack of o…
Chronology of our Galaxy from Gaia colour-magnitude diagram fitting (ChronoGal). I. The formation and evolution of the thin disc from the Gaia Catalogue of Nearby Stars
Ruiz-Lara, Tomás; Vasiliev, Eugene; Chiappini, Cristina +15 more
Context. The study of the Milky Way is living a golden era thanks to the enormous high-quality datasets delivered by Gaia, and space asteroseismic and ground-based spectroscopic surveys. However, the current major challenge to reconstructing the chronology of the Milky Way is the difficulty to derive precise stellar ages for large samples of stars…
MIDIS: JWST NIRCam and MIRI Unveil the Stellar Population Properties of Lyα Emitters and Lyman-break Galaxies at z ≃ 3–7
Pérez-González, Pablo G.; Costantin, Luca; Boogaard, Leindert A. +29 more
We study the stellar population properties of 182 spectroscopically confirmed (MUSE/VLT) Lyα emitters (LAEs) and 450 photometrically selected Lyman-break galaxies (LBGs) at z = 2.8–6.7 in the Hubble Extreme Deep Field. Leveraging the combined power of Hubble Space Telescope and JWST NIRCam and MIRI observations, we analyze their rest-frame UV-thro…
A new step forward in realistic cluster lens mass modelling: analysis of Hubble Frontier Field Cluster Abell S1063 from joint lensing, X-ray, and galaxy kinematics data
Koekemoer, Anton M.; Mahler, Guillaume; Richard, Johan +14 more
We present a new method to simultaneously and self-consistently model the mass distribution of galaxy clusters that combines constraints from strong lensing features, X-ray emission, and galaxy kinematics measurements. We are able to successfully decompose clusters into their collisionless and collisional mass components thanks to the X-ray surfac…