Results 1 to 10 of about 374,157 (297)
Orbits of Binary Stars: from Visual Measures to Speckle Interferometry [PDF]
arXivKnowledge 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. This prompts reconsideration of the methods of orbit calculation, undertaken here and illustrated by 20 examples, from accurate to ...
Andrei Tokovinin
arxiv +9 more sources
Visual Binary Stars: Data to Investigate Formation of Binaries [PDF]
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 +7 more sources
Preliminary orbital elements of six visual binary stars [PDF]
Astronomische Nachrichten, 2008 AbstractPreliminary new orbital elements were computed for the visual binary stars A 1 ‐ ADS 1345, A 2629 ‐ ADS 3610, BU 560 ‐ ADS 4371, STF 3115 ‐ ADS 4376, STF 1426 AB ‐ ADS 7730 and STF 2437 ‐ ADS 11956. Using Straizys and Kuriliene's data, we derived new formulae for computing dynamical parallaxes for luminosity classes IV and V.
M. Scardia +3 more
semanticscholar +10 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
semanticscholar +12 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 +5 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
semanticscholar +10 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
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
semanticscholar +5 more sources
Visual Orbits of Wolf–Rayet Stars. I. The Orbit of the Dust-producing Wolf–Rayet Binary WR 137 Measured with the CHARA Array [PDF]
The Astrophysical JournalClassical Wolf–Rayet (W-R) stars are the descendants of massive OB stars that have lost their hydrogen envelopes and are burning helium in their cores prior to exploding as Type Ib/c supernovae.
Noel D. Richardson +21 more
doaj +4 more sources
Pairing function of visual binary stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACTAn all-sky sample of 1227 visual binaries based on Washington Double Star catalogue is constructed to infer the initial mass function (IMF), mass ratio, and projected distance distribution with a dedicated population synthesis model. Parallaxes from Gaia DR2 and Hipparcos are used to verify the distance distribution.
Dmitry Chulkov
semanticscholar +6 more sources