Wide Binaries in an Ultra-faint Dwarf Galaxy: Discovery, Population Modeling, and A Nail in the Coffin of Primordial black hole Dark Matter
Sign Up to like & getrecommendations! Published in 2025 at "Publications of the Astronomical Society of the Pacific"
DOI: 10.1088/1538-3873/ae11d2
Abstract: We report the discovery and characterization of a wide binary population in the ultrafaint dwarf galaxy Boötes I using deep JWST/NIRCam imaging. Our sample consists of 52 candidate binaries with projected separations of 7000–16,000 au… read more here.
Keywords: dark matter; wide binaries; dwarf galaxy; population ... See more keywords
Close substellar-mass companions in stellar wide binaries: Discovery and characterization with APOGEE and Gaia DR2
Sign Up to like & getrecommendations! Published in 2021 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stab2349
Abstract: We present a search for close, unresolved companions in a subset of spatially resolved Gaia wide binaries containing main-sequence stars within 200 pc of the Sun, utilizing the APOGEE–Gaia Wide Binary Catalog. A catalog of 37… read more here.
Keywords: substellar mass; mass; wide binary; wide binaries ... See more keywords
Modified Newtonian Gravity, Wide Binaries and the Tully-Fisher Relation
Sign Up to like & getrecommendations! Published in 2020 at "Universe"
DOI: 10.3390/universe6110209
Abstract: A recent study of a sample of wide binary star systems from the Hipparcos and Gaia catalogues has found clear evidence of a gravitational anomaly of the same kind as that appearing in galaxies and… read more here.
Keywords: fisher relation; modified newtonian; wide binaries; gravity ... See more keywords