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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

Statistical Analysis of a Comprehensive List of Visual Binaries

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 +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.
openaire +6 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

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
openalex +5 more sources

Orbits Of Five Visual Binary Stars

, 2007
9 pages, 5 figures, 4 ...
Bojan Novaković
openalex +4 more sources

Spectroscopy of close visual binary components of the stable shell star 1 Delphini [PDF]

Astronomy & Astrophysics, 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
openaire +5 more sources

The Masses of Visual Binary Stars of Different Spectral Types [PDF]