Results 21 to 30 of about 83,821 (294)

Star-crossed Lovers DI Tau A and B: Orbit Characterization and Physical Properties Determination

The Astrophysical Journal, 2023
The stellar companion to the weak-line T Tauri star DI Tau A was first discovered by the lunar occultation technique in 1989 and was subsequently confirmed by a speckle imaging observation in 1991.
Shih-Yun Tang, Asa G. Stahl, L. Prato, G. H. Schaefer, Christopher M. Johns-Krull, Brian A. Skiff, Charles A. Beichman, Taichi Uyama   +7 more
doaj   +1 more source

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.
Scardia, M., Prieur, J.-L., Pansecchi, L., Argyle, R. W.   +3 more
openaire   +2 more sources

Visual binary stars with known orbits in Gaia EDR3

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, Oleg Malkov
openaire   +2 more sources

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, Steve B. Howell, Rachel A. Matson, Elise Furlan, Crystal L. Gnilka, Colin Littlefield, David R. Ciardi, Mark E. Everett, Sergio B. Fajardo-Acosta, Catherine A. Clark   +9 more
doaj   +1 more source

Visual Binaries: Cross-Matching and Compiling of a Comprehensive List

Open Astronomy, 2015
Visual binary stars make up the largest set among observed types of binaries (currently more than 110 000 systems are known containing more than 230 000 components).
Isaeva A. A., Kovaleva D. A., Malkov O. Yu.   +2 more
doaj   +1 more source

The High Angular Resolution Multiplicity of Massive Stars

, 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.
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
core   +1 more source

Symbiotic Stars in OGLE Data I. Large Magellanic Cloud Systems [PDF]

, 2013
Symbiotic stars are long-orbital-period interacting-binaries characterized by extended emission over the whole electromagnetic range and by complex photometric and spectroscopic variability.
Angeloni, R., Catelan, M., Di Mille, F., Guzman, D., Landi, R., Lopes, C. E. Ferreira, Masetti, N., Navarrete, C., Parisi, P., Pietrukowicz, P., Puzia, T. H., Schaefer, B. E., Udalski, A.   +12 more
core   +3 more sources

The triple degenerate star WD1704+481 [PDF]

, 2000
WD1704+481 is a visual binary in which both components are white dwarfs. We present spectra of the H-alpha line of both stars which show that one component (WD1704+481.2 = Sanduleak B = GR 577) is a close binary with two white dwarf components.
Han, Z., Marsh, T. R., Maxted, P. F. L., Moran, C. K. J.   +3 more
core   +4 more sources

JWST Observations of the Enigmatic Y-Dwarf WISE 1828+2650. I. Limits to a Binary Companion

The Astrophysical Journal, 2023
The Y-dwarf WISE 1828+2650 is one of the coldest known brown dwarfs with an effective temperature of ∼300 K. Located at a distance of just 10 pc, previous model-based estimates suggest WISE1828+2650 has a mass of ∼5–10 M _J , making it a valuable ...
Matthew De Furio, Ben Lew, Charles Beichman, Thomas Roellig, Geoffrey Bryden, David Ciardi, Michael Meyer, Marcia Rieke, Alexandra Greenbaum, Jarron Leisenring, Jorge Llop-Sayson, Marie Ygouf, Loic Albert, Martha Boyer, Daniel Eisenstein, Klaus Hodapp, Scott Horner, Doug Johnstone, Doug Kelly, Karl Misselt, George Rieke, John Stansberry, Erick Young   +22 more
doaj   +1 more source

Multiplicity of late-type B stars with HgMn peculiarity

, 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.
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
core   +1 more source