J/A+A/546/A69   Orbits of visual binaries and dynamical masses  (Malkov+, 2012)
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Dynamical masses of a selected sample of orbital binaries.
    Malkov O.Yu., Tamazian V.S., Docobo J.A., Chulkov D.A.
   <Astron. Astrophys. 546, A69 (2012)>
   =2012A&A...546A..69M
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ADC_Keywords: Stars, double and multiple ; Stars, masses
Keywords: binaries: visual

Abstract:
    Orbital binary stars are essential objects for determining dynamical
    and physical properties of stars through a combined analysis of
    photometric and astrometric data. We compiled a set of orbital
    binaries with known trigonometric parallaxes and orbits of high
    quality, using data from current versions of the Catalogue of Orbits
    and Ephemerides of Visual Double Stars and the Sixth Catalog of Orbits
    of Visual Binary Stars as well as including updated information from
    WDS and SIMBAD. We constructed distributions of orbital binaries among
    dynamical mass, period, semi-major axis, and eccentricity of systems,
    which characterize the set. Some problems related to the
    parameterization of orbital binaries are also discussed in the paper.


Description:
    To compile the orbit list, we combined data from both OARMAC (catalog
    of Orbits and Ephemerides of Visual Double Stars) and ORB6 (Sixth
    Catalog of Orbits of Visual Binary Stars). At this stage, we
    maintained systems without parallax, but removed systems without a
    period / semi-major axis. The resulting list contains 3139 orbits for
    2278 pairs: 1588 pairs have a single orbit, 548 pairs have two orbits,
    120 pairs have three orbits, 19 pairs have four orbits, one pair has
    five orbits, and two pairs have seven orbits.

    Table 1 contains a compiled set (1) of 3139 orbit solutions for visual
    binary stars. Separate entries are provided for different pairs in
    multiple systems. Several solutions per pair are possible. Each entry
    includes main orbital elements (Semi-major axis, period, eccentricity
    with corresponding uncertainties), indication of multiplicity and
    number of solutions, as well as visual magnitudes, spectral classes of
    the components, parallax and interstellar extinction estimate.

    Table 2 contains a refined set of 652 solely binary systems with
    reliable orbit and determined parallax. One entry corresponds to one
    system. 3 masses estimates are provided: 1) Dynamical mass with
    uncertainty derived from Kepler's third law and trigonometric
    parallax, 2) Photometric mass estimated from visual magnitudes,
    parallax and mass-luminosity relation, 3) Spectroscopic mass based on
    mass-spectrum relation introduced by Straizys V. & Kuriliene G.
    1981Ap&SS..80..353S. Main orbital elements, parallax, components
    magnitudes, spectral classes

File Summary:
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 FileName   Lrecl  Records   Explanations
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ReadMe         80        .   This file
table1.dat    170     3139  *Orbit list
table2.dat    146      652   System list, includes masses estimates
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Note on table1.dat: The list is based on current versions of Sixth Catalog of
   Orbits of Visual Binary Stars (2001AJ....122.3472H) and Observatorio
   Astronomico Ramon Maria Aller Catalogue of Orbits and Ephemerides of Visual
   Double Stars (2001AcA....51..353D).
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See also:
    B/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2012)

Byte-by-byte Description of file: table1.dat
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   Bytes Format Units    Label     Explanations
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   1- 10  A10   ---      WDS       WDS designation (HHMMm+DDMM, J2000)
  12- 25  A14   ---      Disc      Discoverer designation
  27- 32  I6    ---      HIP       ?=0 Hipparcos number
  34- 38  I5    ---      ADS       ?=0 ADS number
      40  I1    ---      Np        Number of pairs in system
      42  I1    ---      ip        Current number of pair
      44  I1    ---      No        Number of orbits per pair
      46  I1    ---      io        Current number of orbit
  48- 52  F5.2  mag      mag1      Visual magnitude of primary component (G1)
  54- 58  F5.2  mag      mag2      ?=99.99 Visual magnitude of secondary
                                           component (G1)
  60- 73  A14   ---      SpType    Spectral type(s) (G1)
  74- 79  F6.2  mas      plx       Trigonometric parallax (G2)
  81- 85  F5.2  mas    e_plx       Uncertainty of trigonometric parallax (G2)
  87- 91  F5.3  mag      Ext       ?=9.99 Interstellar extinction (G3)
  93-105  F13.6 yr       Per       ?=99.99 Period
 107-118  F12.6 yr     e_Per       ?=99.99 Uncertainty of period
 120-128  F9.5  arcsec   a         Semi-major axis of orbit
 130-137  F8.5  arcsec e_a         ?=99.99 Uncertainty of semi-major axis
 139-146  F8.6  ---      e         ?=9.99 Eccentricity of orbit
 147-156  F10.7 ---    e_e         ?=99.99 Uncertainty of eccentricity
     158  I1    ---      Gr1       [1/9]? Orbit quality grade in ORB6
     160  A1    ---      Gr2       [A-C] Orbit quality grade in OARMAC
     162  A1    ---      note1     [n] Note in ORB6 flag
 164-166  A3    ---      note2     Comment in OARMAC flag
     168  A1    ---      eb        [E] Eclipsing binary flag
     170  A1    ---      sb        [S] Spectroscopic binary flag
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Byte-by-byte Description of file: table2.dat
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   Bytes Format Units     Label     Explanations
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   1- 10  A10   ---       WDS       WDS designation
  12- 16  F5.2  mag       mag1      Visual magnitude of primary component (G1)
  18- 22  F5.2  mag       mag2      ?=99.99 Visual magnitude of secondary
                                             component (G1)
  25- 38  A14   ---       SpType    Spectral type(s) (G1)
  39- 44  F6.2  mas       plx       Trigonometric parallax (G2)
  46- 50  F5.2  mas     e_plx       Uncertainty of trigonometric parallax (G2)
  52- 56  F5.3  mag       Ext       Interstellar extinction (G3)
  59- 70  F12.6 yr        Per       ?=99.99 Period
  74- 83  F10.6 yr      e_Per       Uncertainty of period
  85- 93  F9.5  arcsec    a         Semi-major axis
  95-102  F8.5  arcsec  e_a         Uncertainty of semi-major axis
 104-111  F8.6  ---       e         Eccentricity
 112-120  F9.6  ---     e_e         ?=99.99 Uncertainty of eccentricity
 121-126  F6.2  Msun      Mdyn      Dynamical mass
 129-134  F6.2  Msun    e_Mdyn      Uncertainty of dynamical mass
 136-140  F5.2  Msun      Mph       ?=99.99 Photometric mass
 142-146  F5.2  Msun      Msp       ?=99.99 Spectroscopic mass
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Global notes:
Note (G1): From Washington Double Star Catalog, Cat. B/wds.
Note (G2): From new reduction of Hipparcos data by van Leeuwen
           2007A&A...474..653V, Cat. I/311.
Note (G3): Estimate from Parenago's formula
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Acknowledgements:
    Dmitry Chulkov, chulkovd(at)gmail.com

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(End)     Dmitry Chulkov [INASAN, Russia], Patricia Vannier [CDS]    01-Oct-2012
