Results 1 to 10 of about 330,941 (300)
Orbits of Binary Stars: from Visual Measures to Speckle Interferometry [PDF]
The Astronomical JournalKnowledge of the orbits of visual binary stars has always been one of the fundamentals of astronomy. Based historically on the visual measures, nowadays the orbits rely more (or exclusively) on the accurate speckle data.
Andrei Tokovinin
doaj +7 more sources
Statistical Analysis of a Comprehensive List of Visual Binaries [PDF]
Open Astronomy, 2015 Visual binary stars are the most abundant class of observed binaries. The most comprehensive list of data on visual binaries compiled recently by cross-matching the largest catalogues of visual binaries allowed a statistical investigation of ...
Kovaleva D. +4 more
doaj +5 more sources
Visual binaries among high-mass stars - An adaptive optics survey of OB stars in the NGC 6611 cluster [PDF]
, 2001 We have searched for visual binaries with projected separations in the range 200-3000 AU (0.1"-1.5") among a sample of 96 stars in the massive young NGC 6611 cluster, 60 of them being subsequently identified as high probability cluster members of mainly OB spectral type.
Gaspard Duchêne +3 more
arxiv +8 more sources
Orbits Of Five Visual Binary Stars [PDF]
Baltic Astron.16:435-442, 2007, 2007 We presented here the orbital parameters for five visual binary stars calculated by using the new method which we named Sector Grid Search. Orbital parameters were obtained for the following stars: WDS 00152+2722 = ADS 195, WDS 02202+2949 = ADS 1780, WDS 11550$-$5606 = HIP 58106, WDS 16256$-$2327 = ADS 10049 and WDS 16256$-$2327 = ADS 10045.
Bojan Novaković
arxiv +5 more sources
Visual Binary Stars: Data to Investigate Formation of Binaries
Open Astronomy, 2016 Statistics of orbital parameters of binary stars as well as statistics of their physical characteristics bear traces of star formation history. However, statistical investigations of binaries are complicated by incomplete or missing observational data ...
Kovaleva D. +3 more
doaj +6 more sources
Spectroscopy of close visual binary components of the stable shell star 1 Del [PDF]
A&A 587, A22 (2016), 2016 Stable shell stars are ideal objects for studying basic physical principles of the formation of disks in Be stars. If these stars have a close unresolved visual companion, its contribution toward the modelling of the disk cannot be overlooked, as is sometimes done.
Jiří Kubát +4 more
arxiv +7 more sources
Some Photometric Characteristics of Population II Orbital Visual Binary Stars [PDF]
Open Astronomy, 2003 A MV ,B−V diagram for metal-deficient, kinematically selected thick disk and halo visual binary stars with known orbits is presented. The magnitude differences Δm between the components are analyzed.
Bartkevičius A., Gudas A.
doaj +4 more sources
ON-SKY DEMONSTRATION OF A LINEAR BAND-LIMITED MASK WITH APPLICATION TO VISUAL BINARY STARS [PDF]
The Astrophysical Journal, 2010 We have designed and built the first band-limited coronagraphic mask used for ground-based high-contrast imaging observations. The mask resides in the focal plane of the near-infrared camera PHARO at the Palomar Hale telescope and receives a well-corrected beam from an extreme adaptive optics system.
Justin R. Crepp +4 more
core +10 more sources
Orbital elements of six visual binary stars [PDF]
Astronomische Nachrichten, 2001 Revised orbital elements of the visual binary stars STT 515, BU 4 AB, STF 183 AB, A 207, STT 43 and A 2413 are given. Dynamical parallaxes and total masses of the systems have been calculated.
M. Scardia +3 more
+10 more sources
Visual binary stars with known orbits in Gaia EDR3 [PDF]
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT A total of 3350 objects from the Sixth Catalog of Orbits of Visual Binary Stars (ORB6) are investigated to validate Gaia Early Data Release 3 (EDR3) parallaxes and provide mass estimates for the systems. We show that two-thirds of binaries with a separation of 0.2–0.5 arcsec are left without a parallax solution in EDR3.
Dmitry Chulkov, O. Yu. Malkov
openalex +3 more sources