Search Publications
The Structure and Morphology of Galaxies during the Epoch of Reionization Revealed by JWST
Ho, Luis C.; Zhuang, Ming-Yang; Li, Ruancun +3 more
We analyze 347 galaxies at redshift 4 < z < 9.5 using JWST observations from the Cosmic Evolution Early Release Science (CEERS) program by simultaneously fitting a two-dimensional parametric model to the seven-filter Near Infrared Camera images to measure the overall structural parameters and quantify the global properties of the galaxies in…
Galactic Archaeology with Gaia
Belokurov, Vasily; Deason, Alis J.
The Gaia mission has revolutionized our view of the Milky Way and its satellite citizens. The field of Galactic Archaeology has been piecing together the formation and evolution of the Galaxy for decades, and we have made great strides, with often limited data, towards discovering and characterizing the subcomponents of the Galaxy and its building…
From super-Earths to sub-Neptunes: Observational constraints and connections to theoretical models
Bouchy, François; Helled, Ravit; Parc, Léna +2 more
The growing number of well-characterized exoplanets smaller than Neptune enables us to conduct more detailed population studies. We have updated the PlanetS catalog of transiting planets with precise and robust mass and radius measurements and use this comprehensive catalog to explore mass-radius (M-R) diagrams. On the one hand, we propose new M-R…
PHANGS-JWST: Data-processing Pipeline and First Full Public Data Release
Ramambason, Lise; Neumayer, Nadine; Henshaw, Jonathan D. +55 more
The exquisite angular resolution and sensitivity of JWST are opening a new window for our understanding of the Universe. In nearby galaxies, JWST observations are revolutionizing our understanding of the first phases of star formation and the dusty interstellar medium. Nineteen local galaxies spanning a range of properties and morphologies across …
MaNGA AGN dwarf galaxies (MAD) - I. A new sample of AGNs in dwarf galaxies with spatially-resolved spectroscopy
Domínguez Sánchez, H.; Mezcua, M.
The finding of active galactic nuclei (AGNs) in dwarf galaxies has important implications for galaxy evolution and supermassive black hole formation models. Yet, how AGNs in dwarf galaxies form is still debated, in part due to scant demographics. We use the MaNGA survey, comprising ~10 000 galaxies at z < 0.15, to identify AGN dwarf galaxies us…
The APOGEE value-added catalogue of Galactic globular cluster stars
Cohen, Roger E.; Brownstein, Joel R.; Majewski, Steven R. +17 more
We introduce the Sloan Digital Sky Survey (SDSS)/ Apache Point Observatory Galactic Evolution Experiment (APOGEE) value-added catalogue of Galactic globular cluster (GC) stars. The catalogue is the result of a critical search of the APOGEE Data Release 17 (DR17) catalogue for candidate members of all known Galactic GCs. Candidate members are assig…
SMILES Initial Data Release: Unveiling the Obscured Universe with MIRI Multiband Imaging
Pérez-González, Pablo G.; Ji, Zhiyuan; Shivaei, Irene +12 more
The James Webb Space Telescope is revolutionizing our view of the Universe through unprecedented sensitivity and resolution in the infrared, with some of the largest gains realized at its longest wavelengths. We present the Systematic Mid-infrared Instrument (MIRI) Legacy Extragalactic Survey (SMILES), an eight-band MIRI survey with Near-Infrared …
JWST/NIRISS Reveals the Water-rich "Steam World" Atmosphere of GJ 9827 d
Fortney, Jonathan J.; MacDonald, Ryan J.; Knutson, Heather A. +30 more
With sizable volatile envelopes but smaller radii than the solar system ice giants, sub-Neptunes have been revealed as one of the most common types of planet in the galaxy. While the spectroscopic characterization of larger sub-Neptunes (2.5–4 R ⊕) has revealed hydrogen-dominated atmospheres, smaller sub-Neptunes (1.6–2.5 R ⊕…
A 1.9 solar-mass neutron star candidate in a 2-year orbit
Bieryla, Allyson; Latham, David W.; Rix, Hans-Walter +10 more
We report discovery and characterization of a main-sequence G star orbiting a dark object with mass 1.90±0.04M⊙. The system was discovered via Gaia astrometry and has an orbital period of 731 days. We obtained multi-epoch RV follow-up over a period of 639 days, allowing us to refine the Gaia orbital solution and precisely constrain the masses of b…
CEERS Key Paper. VIII. Emission-line Ratios from NIRSpec and NIRCam Wide-Field Slitless Spectroscopy at z > 2
Papovich, Casey; Yang, Guang; Finkelstein, Steven L. +37 more
We use James Webb Space Telescope Near-Infrared Camera Wide Field Slitless Spectroscopy (NIRCam WFSS) and the Near-Infrared spectrograph (NIRSpec) in the Cosmic Evolution Early Release survey to measure rest-frame optical emission-line ratios of 155 galaxies at z > 2. The blind NIRCam grism observations include a sample of galaxies with bright …