Results 1 to 10 of about 1,006,206 (194)
Search for a Black Hole Binary in Gaia DR3 Astrometric Binary Stars with Spectroscopic Data [PDF]
The Astrophysical Journal, 2023 We report the discovery of a candidate binary system consisting of a black hole (BH) and a red giant branch star in Gaia DR3. This binary system was discovered from 64,108 binary solutions for which both astrometric and spectroscopic data are available ...
Ataru Tanikawa +5 more
doaj +5 more sources
The Open Journal of AstrophysicsAstrometry from {\it Gaia} DR3 has produced a sample of $\sim$170,000 Keplerian orbital solutions, with many more anticipated in the next few years.
Kareem El-Badry +6 more
doaj +4 more sources
Astrometric identification of nearby binary stars – I. Predicted astrometric signals
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT We examine the capacity to identify binary systems from astrometric errors and deviations alone. Until the release of the fourth Gaia data release, we lack the full astrometric time-series that the satellite records, but as we show can still infer the presence of binaries from the best-fitting models, and their error, already ...
Vasily Belokurov +2 more
exaly +3 more sources
AN ASTROMETRIC STUDY OF FOUR BINARY STARS [PDF]
Publications of the Astronomical Society of the Pacific, 1994 Completion of long-term astrometric plate series yields revised results on the orbits and parallaxes. The subdwarf mu Cas seems to be overluminous; the distance of the supergiant epsilon Aur is near 600 pc. The unresolved companion in the red dwarf pair BD +6degree398 is of very low mass, and the companion of BD +67degree552 massive but probably ...
Wulff D. Heintz, Bruce A. Cantor
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The nearby astrometric-spectroscopic binary star Hip 68682
Frontiers in Astronomy and Space Sciences, 2023 The nearby astrometric-spectroscopic binary star Hip 68682 has an orbital period of ∼ 9.88 yr. The dynamical state (component masses and kinematic parameters) of this system is redetermined by fitting all the observational data available to us, including the radial velocity data (RVD), the relative position data (RPD), and the Hipparcos Intermediate ...
Yanning Fu
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Astrometric confirmation of young low-mass binaries and multiple systems in the Chamaeleon star-forming regions⋆,⋆⋆ [PDF]
Astronomy and Astrophysics, 2012 33 pages, 22 figures, accepted for publication in A&A, 2nd version: typos and measurement unit added in Table ...
Andreas Seifahrt +2 more
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ICCD Speckle Observations of Binary Stars. XIX. An Astrometric/Spectroscopic Survey of O Stars
Astronomical Journal, 1998 We present the results of a speckle interferometric survey made with the CHARA speckle camera and 4 m–class telescopes of Galactic O-type stars with V 59% have a visual or spectroscopic companion) but less so among field and especially runaway stars.
Douglas R. Gies +2 more
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Re-processing the Hipparcos Transit Data and Intermediate Astrometric Data of spectroscopic binaries* [PDF]
Astronomy and Astrophysics, 2000 The Intermediate Astrometric Data (IAD) and Transit Data (TD) made available by ESA after the Hipparcos mission make it possible to re-process the observations of any Hipparcos entry. This paper illustrates how TD and IAD may be used in conjunction with the orbital parameters of spectroscopic binaries to improve the astrometric parameters of binaries ...
D Pourbaix, A Jorissen
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Astronomical Journal, 2023 Abstract In this paper, we report on the follow-up of six potential exoplanets detected with Gaia astrometry and provide an overview of what is currently known about the nature of the entire Gaia astrometric exoplanet candidate sample, 72 systems in total.
Marcus L. Marcussen, Simon H. Albrecht
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An Astrometric Study of the Low-Mass Binary Star Ross 614
Astronomical Journal, 2003 Long accepted as the quintessential low-mass star, the secondary of the nearby diminutive astrometric binary Ross 614 has attracted considerable astrophysical interest. Unfortunately, the orbital period of 16.6 yr exceeds the duration of the mission-limited studies of most space-borne or instrumental-proving observational programs.
George Gatewood, Louis Coban, Inwoo Han
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