Results 11 to 20 of about 330,941 (300)

Orbits of Ten Visual Binary Stars [PDF]

Chinese Journal of Astronomy and Astrophysics, 2007
We present the orbits of ten visual binary stars: WDS 01015+6922, WDS 01424–0645, WDS 01461+6349, WDS 04374–0951, WDS 04478+5318, WDS 05255–0033, WDS 05491+6248, WDS 06404+4058, WDS 07479–1212, and WDS 18384+0850. We have also determined their masses, dynamical parallaxes and ephemerides.
Bojan Novaković
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Orbital elements of five close visual binary stars [PDF]

Astronomische Nachrichten, 2000
Revised orbital elements of the visual binary stars STT 2, STT 4, BU 1015, STT 6 and BU 395 are given. Dynamical parallaxes and total masses of the systems have been calculated.
M. Scardia, J.-L. Prieur, É. Aristidi, L. Koechlin   +3 more
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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
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Searching for faint companions with VLTI/PIONIER. II. 92 main sequence stars from the Exozodi survey [PDF]

A&A 570, A127 (2014), 2014
The Exozodi survey aims to determine the occurrence rate of bright exozodiacal discs around nearby main sequence stars using infrared interferometry. Although the Exozodi survey targets have been carefully selected to avoid the presence of binary stars, the results of this survey can still be biased by the presence of unidentified stellar companions ...
Absil, Olivier, Augereau, Jean-Charles, Blind, Nicolas, Bouquin, Jean-Baptiste Le, Defrere, Denis, Ertel, Steve, Lebreton, Jeremy, Marion, Lindsay, Milli, Julien   +8 more
arxiv   +7 more sources

The High Angular Resolution Multiplicity of Massive Stars [PDF]

, 2008
We present the results of a speckle interferometric survey of Galactic massive stars that complements and expands upon a similar survey made over a decade ago. The speckle observations were made with the KPNO and CTIO 4 m telescopes and USNO speckle camera, and they are sensitive to the detection of binaries in the angular separation regime between 0 ...
Alzner, Alzner, Alzner, Baize, Baize, Baize, Baize, Barnaby, Brendley, Brendley, Brian D. Mason, Clarke, Couteau, Couteau, Couteau, Cvetkovic, Cvetkovic, Docobo, Docobo, Docobo, Docobo, Docobo, Docobo, Docobo, Docobo, Docobo, Docobo, Docobo, Docobo, Docobo, Docobo, Docobo, Docobo, Douglas R. Gies, ESA, Espin, Fekel, Finsen, Finsen, Finsen, Finsen, Finsen, Finsen, Finsen, Finsen, Forveille, Gies, Hartkopf, Hartkopf, Hartkopf, Hartkopf, Hartkopf, Hartkopf, Hartkopf, Hartkopf, Hartkopf, Hartkopf, Hartkopf, Harvey, Harvin, Heintz, Heintz, Heintz, Heintz, Heintz, Heintz, Heintz, Heintz, Holden, Honig, Hoogerwerf, Horch, Hummel, Hummel, Isobe, Isobe, John W. Helsel, Lane, Leonard, Ling, Ling, Ling, Ling, Mante, Mante, Mante, Mante, Mante, Mante, Mante, Mason, Mason, Mason, Mason, Mason, Mason, Mason, Mason, Maíz-Apellániz, Maíz-Apellániz, Mourao, Muller, Nelan, Niemela, Nys, Olevic, Olevic, Olevic, Olevic, Olevic, Olevic, Olevic, Patience, Penny, Petr, Popovic, Romero, Romero, Romero, Romero, Rossiter, Scardia, Scardia, Scardia, Seymour, Seymour, Seymour, Seymour, Seymour, Simon, Starikova, Starikova, Starikova, Söderhjelm, Tamazian, Todd J. Henry, Tokovinin, Tokovinin, Turner, Turner, van den Bos, Vanbeveren, Walborn, Weigelt, William I. Hartkopf, Zaera, Zirm, Zirm, Zulevic, Zulevic, Öpik   +150 more
arxiv   +3 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 Journal
Classical 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, Gail H. Schaefer, Jan J. Eldridge, Rebecca Spejcher, Amanda Holdsworth, Ryan M. Lau, John D. Monnier, Anthony F. J. Moffat, Gerd Weigelt, Peredur M. Williams, Stefan Kraus, Jean-Baptiste Le Bouquin, Narsireddy Anugu, Sorabh Chhabra, Isabelle Codron, Jacob Ennis, Tyler Gardner, Mayra Gutierrez, Noura Ibrahim, Aaron Labdon, Cyprien Lanthermann, Benjamin R. Setterholm   +21 more
doaj   +3 more sources

The mass-ratio distribution of Visual Binary Stars [PDF]

Astrophysics and Space Science, 1990
The selection effects that govern the observations of Visual Binary Stars are investigated, in order to obtain a realistic statistical distribution of the mass-ratioq=Msec/Mprim. To this end a numerical simulation programme has been developed, which ‘generates’ binary stars and ‘looks’ at them to determine whether an observer on Earth would be able to ...
Hogeveen, S.J.
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The primordial binary population II: Recovering the binary population for intermediate mass stars in Sco OB2 [PDF]

, 2007
We characterize the binary population in the young and nearby OB association Scorpius OB2 using available observations of visual, spectroscopic, and astrometric binaries with intermediate-mass primaries. We take into account observational biases by comparing the observations with simulated observations of model associations. The available data indicate
A. G. A. Brown, Alencar, Andersen, Bahcall, Balega, Barbier-Brossat, Basri, Bate, Bertiau, Blaauw, Blaauw, Bouy, Brown, Brown, Buscombe, Chabrier, Chanamé, Chen, Close, Correia, Cruzalebes, de Bruijne, de Geus, de Zeeuw, Duflot, Duquennoy, Eggleton, Evans, Fryer, Fryer, Girardi, Gualandris, Hanson, Hartkopf, Heacox, Heacox, Heggie, Hillebrandt, Hills, Hoogerwerf, Hut, Jilinski, Jordi, Kouwenhoven, Kouwenhoven, Kraicheva, Kraus, Kraus, Kroupa, Kroupa, Kroupa, Kroupa, Kurosawa, L. Kaper, Levato, Lindegren, Lindroos, M. B. N. Kouwenhoven, Malkov, Mamajek, Mason, Mason, Mathieu, Mathis, McAlister, Meibom, Meynet, Miura, Oblak, Palla, Perryman, Perryman, Plummer, Portegies Zwart, Portegies Zwart, Preibisch, Preibisch, Preibisch, Robin, S. F. Portegies Zwart, Shatsky, Slesnick, Slettebak, Sowell, Svechnikov, Söderhjelm, Thackeray, Tokovinin, Tokovinin, van Albada, van den Heuvel, Vereshchagin, Verschueren, Worley, Worley, Yungelson   +95 more
arxiv   +3 more sources

Multiplicity of late-type B stars with HgMn peculiarity [PDF]

, 2010
Observations at various wavelengths of late B-type stars exhibiting strong overabundances of the chemical elements Hg and Mn in their atmospheres indicate that these stars are frequently found in binary and multiple systems. We intend to study the multiplicity of this type of chemically peculiar stars, looking for visual companions in the range of ...
Abt, Abt, Adelman, Aikman, Alzner, Andrade, Behar, Berghöfer, Brandner, Briquet, Castelli, Chochol, Cole, Correia, Dolk, Duchêne, Dworetsky, Gahm, González, González, Guthrie, Guthrie, Hartkopf, Hartkopf, Hubrig, Hubrig, Hubrig, Hubrig, Hutchings, Isobe, Kochukhov, Kouwenhoven, Lenzen, Levato, Lindroos, Lindroos, M. Schöller, Masciadri, Mason, Mason, Mason, Mason, McAlister, N. Ageorges, Nordstrom, Novakovic, Olevic, Oudmaijer, Pourbaix, Renson, Roberts, Roberts, Rousset, S. Correia, S. Hubrig, Scarfe, Schneider, Stickland, Tokovinin, Wahlgren, Wolff, Zentelis   +61 more
arxiv   +3 more sources

The Rate of Visual Binaries among the Brightest X-Ray Stars [PDF]

The Astrophysical Journal, 2002
Using the Tycho Double Star Catalogue and the Hipparcos Catalogue, I compare the rates of occurrence of resolved visual doubles among the brightest X-ray stars from the ROSAT All-Sky Survey Bright Source Catalog (RASS-BSC) and generally in these two catalogs. A strong correlation between visual binarity and brightness in X-rays is found.
В. В. Макаров
openalex   +3 more sources