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EPOCHS. IV. SED Modeling Assumptions and Their Impact on the Stellar Mass Function at 6.5 ≤ z ≤ 13.5 Using PEARLS and Public JWST Observations
Grogin, Norman A.; Hathi, Nimish P.; Holwerda, Benne W. +31 more
We utilize deep JWST Near Infrared Camera (NIRCam) observations for the first direct constraints on the Galaxy Stellar Mass Function (GSMF) at z > 10. Our EPOCHS v1 sample includes 1120 galaxy candidates at 6.5 < z < 13.5 taken from a consistent reduction and analysis of publicly available deep JWST NIRCam data covering the Prime Extragal…
A core in a star-forming disc as evidence of inside-out growth in the early Universe
Chevallard, Jacopo; Maseda, Michael V.; Carniani, Stefano +36 more
The physical processes that establish the morphological evolution and the structural diversity of galaxies are key unknowns in extragalactic astrophysics. Here we report the finding of the morphologically mature galaxy JADES-GS+53.18343−27.79097, which existed within the first 700 million years of the Universe's history. This star-forming galaxy w…
Stellar streams in the Gaia era
Price-Whelan, Adrian M.; Bonaca, Ana
The hierarchical model of galaxy formation predicts that the Milky Way halo is populated by tidal debris of dwarf galaxies and globular clusters. Due to long dynamical times, debris from the lowest mass objects remains coherent as thin and dynamically cold stellar streams for billions of years. The Gaia mission, providing astrometry and spectropho…
The Lunar Gravitational-wave Antenna: mission studies and science case
Burrows, Adam; Mastrobuono-Battisti, Alessandra; Kobayashi, Chiaki +83 more
The Lunar Gravitational-wave Antenna (LGWA) is a proposed array of next-generation inertial sensors to monitor the response of the Moon to gravitational waves (GWs). Given the size of the Moon and the expected noise produced by the lunar seismic background, the LGWA would be able to observe GWs from about 1 mHz to 1 Hz. This would make the LGWA th…
Multiwavelength constraints on the origin of a nearby repeating fast radio burst source in a globular cluster
Kaspi, Victoria M.; Smith, Kendrick M.; Güver, Tolga +26 more
The precise origins of fast radio bursts (FRBs) remain unknown. Multiwavelength observations of nearby FRB sources can provide important insights into the enigmatic FRB phenomenon. Here we present results from a sensitive, broadband X-ray and radio observational campaign of FRB 20200120E, the closest known extragalactic repeating FRB source (locat…
Photometric detection at 7.7 µm of a galaxy beyond redshift 14 with JWST/MIRI
Pérez-González, Pablo G.; Charlot, Stéphane; Chevallard, Jacopo +31 more
The James Webb Space Telescope (JWST) has spectroscopically confirmed numerous galaxies at z > 10. While weak rest-frame ultraviolet emission lines have only been seen in a handful of sources, the stronger rest-frame optical emission lines are highly diagnostic and accessible at mid-infrared wavelengths with the Mid-Infrared Instrument (MIRI) o…
The Solar and Geomagnetic Storms in 2024 May: A Flash Data Report
Miyoshi, Yoshizumi; Akiyama, Sachiko; Yashiro, Seiji +16 more
In 2024 May, the scientific community observed intense solar eruptions that resulted in a great geomagnetic storm and auroral extensions, highlighting the need to document and quantify these events. This study mainly focuses on their quantification. The source active region (AR; NOAA Active Region 13664) evolved from 113 to 2761 millionths of the …
APOKASC-3: The Third Joint Spectroscopic and Asteroseismic Catalog for Evolved Stars in the Kepler Fields
Chaplin, William J.; Bell, Keaton J.; Cunha, Katia +38 more
In the third APOKASC catalog, we present data for the complete sample of 15,808 evolved stars with APOGEE spectroscopic parameters and Kepler asteroseismology. We used 10 independent asteroseismic analysis techniques and anchor our system on fundamental radii derived from Gaia L and spectroscopic Teff. We provide evolutionary state, ast…
ALESS-JWST: Joint (Sub)kiloparsec JWST and ALMA Imaging of z ~ 3 Submillimeter Galaxies Reveals Heavily Obscured Bulge Formation Events
Smail, I.; Menten, K. M.; Brandt, W. N. +25 more
We present JWST NIRCam imaging targeting 13 z ~ 3 infrared-luminous (LIR ∼ 5 × 1012L⊙) galaxies from the ALESS survey with uniquely deep, high-resolution (0
Once a Triple, Not Always a Triple: The Evolution of Hierarchical Triples That Yield Merged Inner Binaries
El-Badry, Kareem; Angelo, Isabel; Rodriguez, Antonio C. +4 more
More than half of all main-sequence (MS) stars have one or more companions, and many of those with initial masses <8 M ⊙ are born in hierarchical triples. These systems feature two stars in a close orbit (the inner binary) while a tertiary star orbits them on a wider orbit (the outer binary). In hierarchical triples, three-body dynam…