J/BaltA/10/481 HIP visual binaries kinematics. I. (Bartkevicius+, 2001)
Kinematics of Hipparcos visual binaries. I. Stars with orbital solutions.
Bartkevicius A., Gudas A.
<Baltic Astronomy, 10, 481 (2001)>
=2001BaltA..10..481B 2001BaltA..10..481B
ADC_Keywords: Stars, double and multiple ; Photometry, UBV ; Proper motions ;
Parallaxes, trigonometric ; Radial velocities ; Space velocities
Keywords: stars: binaries: visual, kinematics - Galaxy: population -
orbiting observatories: Hipparcos
Abstract:
A sample consisting of 570 binary systems is compiled from several
sources of visual binary stars with well-known orbital elements.
High-precision trigonometric parallaxes (mean relative error about 5%)
and proper motions (mean relative error about 3%) are extracted from
the Hipparcos Catalogue or from the reprocessed Hipparcos data.
However, 13% of the sample stars lack radial velocity measurements.
Computed galactic velocity components and other kinematic parameters
are used to divide the sample stars into kinematic age groups. The
majority (89%) of the sample stars, with known radial velocities, are
the thin disk stars, 9.5% binaries have thick disk kinematics and only
1.4% are halo stars. 85% of thin disk binaries are young or medium age
stars and almost 15% are old thin disk stars. There is an urgent need
to increase the number of the identified halo binary stars with known
orbits and substantially improve the situation with their radial
velocity data.
Based on the data from the Hipparcos astrometry satellite (ESA)
Description:
The sample, consisting of 570 Hipparcos visual binary systems with
known orbits, is selected from several sources based on Hipparcos
measurements. Hipparcos catalogue number, the identification of the
star in other catalogues, the magnitude V, the color index B-V for the
combined light of the system, and a spectral type are taken from the
Hipparcos Celestia Catalogue (ESA 1998, see Cat. I/239). The
trigonometric parallaxes are compiled from the Hipparcos Celestia
Catalogue. For several stars the improved Hipparcos results are also
used. The mean relative error of the weighted mean parallaxes is about
3%. For the bulk of the stars proper motions are taken from the
Hipparcos and Tycho-2 catalogues. The average relative error of the
weighted means of proper motion is about 3%. Radial velocities for 497
stars are compiled from several radial velocity catalogues. The mean
value of the standard error of the sample is about 2.5 km/s. 73 (18%)
of the stars belonging to the sample lack radial velocity
determinations. The computed galactic velocity components and other
kinematical parameters are used to divide the stars into kinematic age
groups.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 73 570 Data of selected stars
table2.dat 54 8 Spectroscopic parallaxes
table3.dat 48 882 Individual values of the parallaxes
table4.dat 25 570 Mean values of parallaxes
table5.dat 42 1013 Individual values of proper motions
table6.dat 38 570 Mean values of proper motions
table7.dat 53 789 Individual values of radial velocities
table8.dat 49 497 Mean values of radial velocities
table9.dat 81 497 Kinematical parameters of stars with known radial
velocities
table10.dat 49 73 Transverse velocities of stars without velocities
table13a.dat 68 54 Halo and thick disk Hipparcos binaries with
orbital transition
table13b.dat 27 5 Thick disk transverse velocity candidate binaries
refs.dat 159 23 References
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See also:
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
J/BaltA/11/153 : HIP visual binaries kinematics. II. (Bartkevicius+ 2002)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP HIP number
8- 19 A12 ---- Name Other name
21- 25 F5.2 mag Vmag V magnitude
27- 32 F6.3 mag B-V B-V colour index
34- 48 A15 --- SpType Spectral type
50- 68 A19 --- Source Sources (comma-separated list), see refs.dat
70- 72 A3 --- Class Population class (1)
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Note (1): Population class:
D1a: young thin disk
D1b: intermediate age thin disk
D2f: old thin disk
D3f: thick disk
H: halo
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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- 6 I6 --- HIP HIP number
8- 15 A8 --- SpType Spectral type
17- 20 F4.2 mag Vmag V magnitude
22- 26 F5.2 mag B-V B-V colour index
28- 32 F5.2 mag VMAG Absolute V magnitude
34- 37 F4.2 mag E(B-V) Color excess
39- 42 F4.2 mag AV Extinction
44- 48 F5.2 mas Plx Spectroscopic parallax
50- 53 F4.2 mas e_Plx rms uncertainty on Plx
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP Hipparcos number
8- 13 F6.2 mas Plx Trigonometric parallax
15- 19 F5.2 mas e_Plx rms uncertainty on Plx
21- 26 A6 --- r_Plx Literature source of the parallaxes, see refs.dat
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP Hipparcos number
8- 13 F6.2 mas Plx Parallax mean value
15- 19 F5.2 mas e_Plx Parallax mean value error
21 I1 --- o_Plx Number of different parallaxes estimations
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP Hipparcos number
7- 8 A2 --- m_HIP Component designation
9- 16 F8.2 mas/yr pmRA Proper motion in right ascension
18- 22 F5.2 mas/yr e_pmRA Proper motion error in right ascension
24- 31 F8.2 mas/yr pmDE Proper motion in declination
33- 37 F5.2 mas/yr e_pmDE Proper motion error in declination
39- 44 A6 --- r_pmRA Literature sources of the proper motions,
see refs.dat
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP Hipparcos number
8- 15 F8.2 mas/yr pmRA Proper motion in right ascension
17- 21 F5.2 mas/yr e_pmRA Proper motion error in right ascension
23- 30 F8.2 mas/yr pmDE Proper motion in declination
32- 36 F5.2 mas/yr e_pmDE Proper motion error in declination
38 I1 --- o_pmRA Number of different proper motion estimations
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP Hipparcos number
8- 14 F7.2 km/s RV Radial velocity
16- 20 F5.2 km/s e_RV Error of radial velocity
22- 23 I2 --- o_RV Number of different radial velocity
estimations in the literature sources
25- 30 A6 --- r_RV Literature sources of radial velocities,
in refs.dat file
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Byte-by-byte Description of file: table8.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP Hipparcos number
8- 14 F7.2 km/s RV Radial velocity mean value
16- 20 F5.2 km/s e_RV Error of radial velocity mean value
22- 23 I2 --- o_RV Number of different radial velocity estimations
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Byte-by-byte Description of file: table9.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP Hipparcos number
8- 14 F7.2 km/s Uvel Galactic velocity component U
16- 20 F5.2 km/s e_Uvel Error of galactic velocity component U
22- 28 F7.2 km/s Vvel Galactic velocity component V
30- 34 F5.2 km/s e_Vvel Error of galactic velocity component V
36- 42 F7.2 km/s Wvel Galactic velocity component W
44- 48 F5.2 km/s e_Wvel Error of galactic velocity component W
50- 55 F6.2 km/s Vtot Total velocity
57- 62 F6.2 km/s e_Vtot Error of total velocity
64- 67 F4.2 --- fG Grenon's parameter fG (1)
69- 74 F6.2 km/s Vt Transverse velocity
76- 81 F6.2 km/s e_Vt Error of transverse velocity
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Note (1): Grenon's parameter:
fG = 1/300 * sqrt(U2+2.5V2+3.5W2)
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Byte-by-byte Description of file: table10.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP HIP number
8- 13 F6.2 km/s Vt Transverse velocity
15- 18 F4.2 km/s e_Vt rms uncertainty on Vt
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Byte-by-byte Description of file: table13a.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP HIP number
8- 18 A11 --- SpType Spectral type
21- 24 F4.2 --- fG Grenon's parameter (1)
26- 31 F6.2 km/s Vtot Total velocity
33- 38 F6.2 km/s e_Vtot rms uncertainty on Vtot
40- 45 F6.2 km/s |Wvel| Absolute space velocity W
47- 53 F7.2 km/s Vrot Rotational velocity
55- 58 A4 --- Crit Selection criteria of population groups (2)
61- 68 A8 --- Note Notes
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Note (1): Grenon's parameter:
fG = 1/300 * sqrt(U2+2.5V2+3.5W2)
Note (2): Selection criteria of population groups:
fG: according to Grenon's population age criteria
U, VROT, W: for the velocity component criterion
VT: for the high transverse velocity when radial velocities are unknown
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Byte-by-byte Description of file: table13b.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP HIP number
8- 15 A8 --- SpType Spectral type
17- 22 F6.2 km/s Vt Transverse velocity
24- 27 F4.2 km/s e_Vt rms uncertainty on Vt
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- Ref Reference code
8- 26 A19 --- BibCode BibCode
28- 52 A25 ---- Aut Author's name
54-159 A106 --- Com Comments
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Acknowledgements: Arturas Gudas
(End) Patricia Bauer [CDS] 21-Nov-2002