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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
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:
FileName Lrecl Records Explanations
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 44 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
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
Bytes Format Units Label Explanations
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)
Note (1): Population class: D1a: young thin disk D1b: intermediate age thin disk D2f: old thin disk D3f: thick disk H: halo
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
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
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
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
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
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
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
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
Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
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
Byte-by-byte Description of file: table7.dat
Bytes Format Units Label Explanations
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
Byte-by-byte Description of file: table8.dat
Bytes Format Units Label Explanations
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
Byte-by-byte Description of file: table9.dat
Bytes Format Units Label Explanations
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
Note (1): Grenon's parameter: fG = 1/300 * sqrt(U2+2.5V2+3.5W2)
Byte-by-byte Description of file: table10.dat
Bytes Format Units Label Explanations
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
Byte-by-byte Description of file: table13a.dat
Bytes Format Units Label Explanations
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
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
Byte-by-byte Description of file: table13b.dat
Bytes Format Units Label Explanations
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
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 6 A6 --- Ref Reference code 8- 26 A19 --- BibCode BibCode 28- 52 A25 ---- Aut Author's name 54-159 A106 --- Com Comments
Acknowledgements: Arturas Gudas
(End) Patricia Bauer [CDS] 21-Nov-2002
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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