Binary parameters from astrometric and spectroscopic errors–candidate hierarchical triples and massive dark companions in Gaia DR3 [PDF]
Monthly notices of the Royal Astronomical Society, 2022 We show how astrometric and spectroscopic errors introduced by an unresolved binary system can be combined to give estimates of the binary period and mass ratio.
Shion Andrew +4 more
semanticscholar +1 more source
Visual Orbits and Alignments of Planet-hosting Binary Systems
The Astronomical Journal, 2023 Roughly half of Solar-type planet hosts have stellar companions, so understanding how these binary companions affect the formation and evolution of planets is an important component to understanding planetary systems overall.
Kathryn V. Lester +9 more
doaj +1 more source
A Catalog of Nearby Accelerating Star Candidates in Gaia DR3
The Astronomical Journal, 2023 We describe a new catalog of accelerating star candidates with Gaia G ≤ 17.5 mag and distances d ≤ 100 pc. Designated as the Gaia Nearby Accelerating Star Catalog (GNASC), it contains 29,684 members identified using a supervised machine-learning ...
Marc L. Whiting +3 more
doaj +1 more source
MASS RATIOS OF LONG-PERIOD BINARY STARS RESOLVED IN PRECISION ASTROMETRY CATALOGS OF TWO EPOCHS [PDF]
Revista mexicana de astronomía y astrofísica, 2021 Mass ratios of widely separated, long-period, resolved binary stars can be directly estimated from the available data in major space astrometry catalogs, such as the ESA's Hipparcos and Gaia mission results. The method is based on the universal principle
V. Makarov
semanticscholar +1 more source
Visual binary stars with known orbits in Gaia EDR3 [PDF]
, 2022 3350 objects from the Sixth catalog of orbits of visual binary stars (ORB6) are investigated to validate Gaia EDR3 parallaxes and provide mass estimates for the systems.
D. Chulkov, O. Malkov
semanticscholar +1 more source
Volume-limited sample of low-mass red giant stars, the progenitors of hot subdwarf stars. I. Sample selection and binary classification method [PDF]
Astronomy & Astrophysics, 2022 The current theory predicts that hot subdwarf binaries are produced from evolved low-mass binaries that have undergone mass transfer and drastic mass loss during either a common envelope phase or a stable Roche lobe overflow while on the red giant branch
M. Uzundag +5 more
semanticscholar +1 more source
The orbits of visual binary and multiple stars obtained by the Apparent Motion Parameters method during the last 40 years [PDF]
Publications of the Pulkovo_Observatory, 2022 Summed many years of work at Pulkovo, the orbits of 67 wide pairs of visual double and multiple stars (included in 64 systems) which were obtained by the Apparent Motion Parameters (AMP) method are presented.
L. G. Romanenko +4 more
semanticscholar +1 more source
The Astronomical Journal, 2023 We present orbital elements for 22 single-line binaries, nine of them studied for the first time, determined from a joint spectroscopic and astrometric solution.
Jennifer Anguita-Aguero +6 more
doaj +1 more source
A New Catalog of Am-type Chemically Peculiar Stars Based on LAMOST
The Astrophysical Journal Supplement Series, 2023 A total of about 21,600 Am candidates were detected with the MKCLASS code based on the low-resolution spectra of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope Data Releases 8 (v1.0), 9 (v0), and 10 (v0), which greatly expands the database
Xiao-man Tian +3 more
doaj +1 more source
Precision Astrometry of a Sample of Speckle Binaries and Multiples with the Adaptive Optics Facilities at the Hale and Keck II Telescopes [PDF]
, 2009 Using the adaptive optics facilities at the 200-in Hale and 10-m Keck II, we observed in the near infrared a sample of 12 binary and multiple stars and one open cluster. We used the near diffraction limited images of these systems to measure the relative
Al-Shukri +50 more
core +2 more sources