J/A+A/546/A69 Orbits of visual binaries and dynamical masses (Malkov+, 2012)
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 2012A&A...546A..69M
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 1981Ap&SS..80..353S. Main orbital elements, parallax, components
magnitudes, spectral classes
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 170 3139 *Orbit list
table2.dat 146 652 System list, includes masses estimates
--------------------------------------------------------------------------------
Note on table1.dat: The list is based on current versions of Sixth Catalog of
Orbits of Visual Binary Stars (2001AJ....122.3472H 2001AJ....122.3472H) and Observatorio
Astronomico Ramon Maria Aller Catalogue of Orbits and Ephemerides of Visual
Double Stars (2001AcA....51..353D 2001AcA....51..353D).
--------------------------------------------------------------------------------
See also:
B/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2012)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------
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 2007A&A...474..653V, Cat. I/311.
Note (G3): Estimate from Parenago's formula
--------------------------------------------------------------------------------
Acknowledgements:
Dmitry Chulkov, chulkovd(at)gmail.com
(End) Dmitry Chulkov [INASAN, Russia], Patricia Vannier [CDS] 01-Oct-2012