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J/BaltA/11/153   HIP visual binaries kinematics. II. (Bartkevicius+, 2002)

Kinematics of Hipparcos visual binaries. II. Stars with ground-based orbital solutions. Bartkevicius A., Gudas A. <Baltic Astronomy, 11, 153 (2002)> =2002BaltA..11..153B
ADC_Keywords: Stars, double and multiple ; Photometry, UBV ; Proper motions ; Parallaxes, trigonometric; Radial velocities ; Space velocities Keywords: stars: binaries: visual - stars: kinematics - stars: Population II Abstract: This paper continues kinematical investigation of the Hipparcos visual binaries with known orbits. A sample, consisting of 804 binary systems with orbital elements determined from ground-based observations, is selected. The mean relative error of their parallaxes is about 12% and the mean relative error of proper motions is about 4%. However, even 41% of the sample stars lack radial velocity measurements. The computed Galactic velocity components and other kinematical parameters are used to divide the stars with known radial velocities into kinematical age groups. The majority (92%) of binaries from the sample are thin disk stars, 7.6% have thick disk kinematics and only two binaries have halo kinematics. Among them, the long-period variable Mira Ceti has a very discordant Hipparcos and ground-based parallax values. From the whole sample, 60 stars are ascribed to the thick disk and halo population. There is an urgent need to increase the number of the identified halo binaries with known orbits and substantially improve the situation with radial velocity data for stars with known orbits. Based on the data from the Hipparcos astrometry satellite (ESA) Description: The sample, consisting of 804 Hipparcos visual binary systems with known orbits which were determined from ground-based observations and not analyzed in Paper I (Bartkevicius and Gudas, 2001, Cat. J/BaltA/10/481), is selected from the Fifth Catalog of Orbits of Visual Binary Stars (Hartkopf et al., 2000). Hipparcos catalogue number, the identification of the star in other catalogues, the equatorial coordinates for 2000.0, 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, Cat. I/239). The trigonometric parallaxes are compiled from the Hipparcos Celestia Catalogue . For several stars the improved Hipparcos results are used and the dynamical parallaxes are also calculated. The mean relative error of the weighted mean parallaxes is about 12%. 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 4%. Radial velocities for 474 stars are compiled from several radial velocity catalogues. The mean value of the standard error of the sample is about 2.5km/s. 330 (41%) 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 kinematical age groups. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 78 804 Data of selected start table2.dat 28 956 Individual values of parallaxes table3.dat 22 804 Mean values of parallaxes table4.dat 48 1715 Individual values of proper motions table5.dat 38 804 Mean values of proper motions table6.dat 28 672 Individual values of radial velocities table7.dat 23 474 Mean values of radial velocities table8.dat 81 474 Kinematical parameters of stars with known radial velocities table9.dat 22 330 Transverse velocities of stars without measured radial velocities table12.dat 74 38 Halo and thick disk binaries table13.dat 38 22 Thick disk transverse velocity candidate binaries
See also: I/239 : The Hipparcos and Tycho Catalogues (ESA 1997) J/BaltA/10/481 : HIP visual binaries kinematics. I. (Bartkevicius+, 2001) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HIP Hipparcos number 7 A1 --- n_HIP [*] *: Individual note (1) 9- 23 A15 --- Name Name of the star 25- 26 I2 h RAh Right ascension (J2000.0) 28- 29 I2 min RAm Right ascension (J2000.0) 31- 35 F5.2 s RAs Right ascension (J2000.0) 37 A1 --- DE- Declination sign (J2000.0) 38- 39 I2 deg DEd Declination (J2000.0) 41- 42 I2 arcmin DEm Declination (J2000.0) 44- 47 F4.1 arcsec DEs Declination (J2000.0) 49- 53 F5.2 mag Vmag Johnson's V magnitude 55- 60 F6.3 --- B-V ? B-V color index 62- 73 A12 --- SpType Spectral type 75- 77 A3 --- Class Population class (G2)
Note (1): Individual notes: HD 26965 = HIP 19849: A-component of orbital binary, HD 26976 = WDS 04153-0739BC HD 80633 = HIP 45838 C-component of orbital binary, HD 80615 = WDS 09207-0742AB
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HIP Hipparcos number 7 A1 --- m_HIP Multiplicity index on HIP 8 A1 --- n_HIP [*] *: Individual note (1) 9- 14 F6.2 mas Plx Parallax 16- 20 F5.2 mas e_Plx Parallax error 22- 27 A6 --- r_Plx Literature sources of the parallaxes (G1)
Note (1): Individual notes: HIP 43820: Missed target. Solution obtained after main catalogue finalization.
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 Parallax mean value 15- 19 F5.2 mas e_Plx Parallax mean value error 22 I1 --- o_Plx Number of different parallaxes estimations
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HIP Hipparcos number 7- 9 A3 --- m_HIP Multiplicity index on HIP 10 A1 --- n_HIP [*] *: Individual note (1) 12- 19 F8.2 mas/yr pmRA Proper motion in right ascension 21- 25 F5.2 mas/yr e_pmRA Proper motion error in right ascension 27- 34 F8.2 mas/yr pmDE Proper motion in declination 36- 40 F5.2 mas/yr e_pmDE Proper motion error in declination 42- 47 A6 --- r_pmRA Literature sources of the proper motions (G1)
Note (1): Individual notes: HIP 43820: Missed target. Solution obtained after main catalogue finalization (Celestia 2000)
Byte-by-byte Description of file: table5.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: table6.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HIP Hipparcos number 7 A1 --- n_HIP [*] *: Individual note (1) 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 26- 27 A2 --- r_RV Literature sources of radial velocities (G1)
Note (1): Individual notes: HIP 13772: RV=49.61±0.19 is binary system's C component radial velocity RV=50.63±0.09 is binary system's (AB) value. HIP 19849: RV=-42.38±4.685 and RV=-42.6±0.2 is binary system's A component radial velocity RV=-47.5±1.5 is binary system component C value.
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 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: table8.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 UV 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- 61 F5.2 km/s e_Vtot Error of total velocity 63- 68 F6.2 km/s Vrot Rotational velocity 70- 73 F4.2 --- fG Grenon's parameter fG (1) 75- 77 A3 --- Class Population class (G2)
Note (1): Grenon's parameter: fG= 1/300 * sqrt(U2+2.5V2+3.5W2)
Byte-by-byte Description of file: table9.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HIP Hipparcos number 8- 12 F5.2 km/s Vt Transverse velocity 14- 18 F5.2 km/s e_Vt Error of transverse velocity 20- 22 A3 --- Class Population class (G2)
Byte-by-byte Description of file: table12.dat
Bytes Format Units Label Explanations
1- 11 A11 --- Name Name of the star 13- 18 I6 --- HIP Hipparcos number 20- 30 A11 --- SpType Spectral type 32- 38 F7.2 km/s Uvel U velocity 40- 46 F7.2 km/s Wvel W velocity 48- 53 F6.2 km/s Vtot Total velocity 55- 60 F6.2 km/s Vrot Rotational velocity 62- 65 F4.2 --- fG Grenon's fG parameter 67- 68 A2 --- Class Population class (G2) 70- 71 A2 --- Crit [UW fG] Criteria of the population class (1) 73- 74 A2 --- Note Note about spectroscopical duplicity
Note (1): Criteria of the population class: fG: according to Grenon's population age criteria U, W: for the velocity component criterion
Byte-by-byte Description of file: table13.dat
Bytes Format Units Label Explanations
1- 11 A11 --- Name Name of the star 14- 19 I6 --- HIP Hipparcos number 21- 26 A6 --- SpType Spectral type 28- 32 F5.2 km/s Vt Transverse velocity 34- 38 F5.2 km/s e_Vt Error of transverse velocity
Global notes: Note (G1): References: HIP: ESA Team, 1997, Cat. I/239, Celestia 2000 FAL: Falin J.L., Mignard F. 1999, Cat. J/A+AS/135/231 FABRAS: Fabricius C., Makarov V.V., 2000, Cat. J/A+AS/144/45 Hei: Heintz W.D., 1993AJ....105.1188H GCTP: Van Altena W.F., Lee J.T., Hoffleit E.D., 1995, Cat. I/238 DYN: Dynamical parallaxes HIC: Hipparcos Input Catalogue, 1993, Cat. I/196 (Celestia 2000) TYC2: Hoeg et al., 2000, Cat. I/259 WDS: Mason et al., Washington Double Star Catalog. 2000 Version. Astrometry Department, U.S. Naval Observatory BF: Barbier-Brossat M., Figon P., 2000 , Cat. III/213 B1: Malaroda et al., 2000, Cat. J/A+AS/144/1 B2: Bartkevicius A., 2000, Population II and Late Type Star Radial velocities Bibliographic Catalogue (1995--2000), unpublished. Note (G2): Population class: D1, D1?: young-middle age thin disk D1a: young thin disk D1b: intermediate age thin disk D2, D2?: old thin disk D3, D3?: thick disk H: halo
Acknowledgements: Arturas Gudas
(End) Patricia Bauer [CDS] 21-Nov-2002
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