Results 11 to 20 of about 83,821 (294)

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.
openaire   +2 more sources

A Search for wide visual companions of exoplanet host stars - The Calar Alto Survey [PDF]

, 2006
We have carried out a search for co-moving stellar and substellar companions around 18 exoplanet host stars with the infrared camera MAGIC at the 2.2m Calar Alto telescope, by comparing our images with images from the all sky surveys 2MASS, POSS I and II.
Broeg, C., Fernandez, M., Guenther, E., Mazeh, T., Mugrauer, Markus, Neuhaeuser, R.   +5 more
core   +1 more source

Searching for faint companions with VLTI/PIONIER. II. 92 main sequence stars from the Exozodi survey [PDF]

, 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 ...
Absil, Olivier, Augereau, Jean-Charles, Blind, Nicolas, Bouquin, Jean-Baptiste Le, Defrere, Denis, Ertel, Steve, Lebreton, Jeremy, Marion, Lindsay, Milli, Julien   +8 more
core   +4 more sources

Investigation Limb darkening for short period AB Andromeda eclipsing binary star

Polytechnic Journal, 2023
This work deal with characterizing the limb darkening coefficients for the short period binary stars AD Andromeda to determine the size, luminosities and masses of the Individual stars as well as orbital size and orientation of the binary system ...
Chiman Ibrahim Hussein Mrs
doaj   +1 more source

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.
Scardia, Marco, Prieur, Jean-Louis, Koechlin, Laurent, Aristidi, Eric   +3 more
openaire   +2 more sources

Atmospheric and Fundamental Parameters of the Individual Components of Multiple Stellar Systems

The Astronomical Journal, 2023
We present detailed analyses of eight triple stellar systems (lying between 20 and 155 pc) and nine quadruple stellar systems (lying between 20 and 250 pc) with different configurations. Most of these systems are hierarchical.
Enas M. Abu-Alrob, Abdallah M. Hussein, Mashhoor A. Al-Wardat   +2 more
doaj   +1 more source

On-Sky Demonstration of a Linear Band-limited Mask with Application to Visual Binary Stars [PDF]

, 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 ...
Andersen, Benedict, Boden, Boss, Crepp, Crepp, Crepp, Ducati, Duchêne, Duquennoy, Dutrey, E. Serabyn, Eggenberger, Gerchberg, Greaves, Guyon, Hatzes, Hatzes, Heinze, Hinkley, Holman, I. Kravchenko, Ida, Ireland, Itoh, J. Carson, J. Crepp, J. Ge, Janson, Kennedy, Konacki, Kraus, Kuchner, Kuchner, Kuchner, Lafrenière, Lee, Levine, Macintosh, Mason, Mawet, Muterspaugh, Pascucci, Proffitt, Serabyn, Shaklan, Song, Tokovinin, Trilling, Xie, Zimmerman   +50 more
core   +2 more sources

The mass ratio distribution of B-type visual binaries in the Sco OB2 association [PDF]

, 2001
The sample of 115 B-type stars in Sco OB2 association is examined for existence of visual companions with ADONIS near-infrared adaptive optics system and coronograph in J and K bands. Practically all components in the separation range 0.3"-6" (45-900 A.U.
A. Tokovinin, Abt, Abt, Augereau, Baraffe, Beuzit, Bouvier, Bouvier, Brandner, Brown, D'Antona, de Geus, de Zeeuw, Duchêne, Duquennoy, Durisen, Fabricius, Fischer, Hubrig, Kroupa, Köhler, Mason, Meeus, N. Shatsky, Otero, Patience, Preibisch, Preibisch, Racine, Steffen, Stetson, Söderhjelm, Tokovinin, Walter, Weigelt   +34 more
core   +2 more sources

Carina OB Stars: X-ray Signatures of Wind Shocks and Magnetic Fields [PDF]

, 2011
The Chandra Carina Complex contains 200 known O- and B type stars. The Chandra survey detected 68 of the 70 O stars and 61 of 127 known B0-B3 stars. We have assembled a publicly available optical/X-ray database to identify OB stars that depart from the ...
Anthony F. J. Moffat, Antokhin, Babel, Benaglia, Berghoefer, Bessell, Broos, Cassinelli, Cassinelli, Castelli, Cohen, Cohen, Cohen, Corcoran, Daniel, David H. Cohen, de Jager, DeGioia-Eastwood, Evans, Evans, Feigelson, Feldmeier, Forte, Freyhammer, Gagne, Gagné, Gamen, Garrett Fehon, Gayley, Getman, Hamaguchi, Hillier, Hoffmeister, Ignace, Leisa K. Townsley, Leutenegger, Lida M. Oskinova, Lépine, Lépine, Maiz Apellaniz, Marc Gagné, Massey, Matthew S. Povich, Maíz Apellániz, Mermilliod, Michael F. Corcoran, Michael R. Savoy, Miroshnichenko, Moffat, Mullan, Nancy Remage Evans, Nelan, Nelan, Nolan R. Walborn, Owocki, Patience, Patrick S. Broos, Pollock, Puls, Rauw, Reed, Robitaille, Robitaille, Sanchawala, Schulz, Skiff, Skinner, Skinner, Smith, Smith, Sota, Stelzer, Turner, ud-Doula, Vazquez, Walborn, Walborn, Walborn, Walborn, Walborn, Waldron, Wegner, Wojdowski, Wolk, Wright, Yaël Nazé, Zinnecker   +86 more
core   +4 more sources

Central Star of NGC 3132: A Visual Binary [PDF]

Symposium - International Astronomical Union, 1978
A faint companion to HD 87892 (V=10.07, B-V=+0.09, U-B=+0.10, Sp.A2) has been discovered with the 3.6 m telescope (prime focus) of the European Southern Observatory at La Silla having the following parameters: separation ψ = 1″.65, position angle θ = 226°.3.
L. Kohoutek, S. Laustsen
openaire   +1 more source