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J/MNRAS/410/190    Young runaway stars within 3kpc          (Tetzlaff+, 2011)

A catalogue of young runaway stars within 3 kpc from Hipparcos Tetzlaff N., Neuhaeuser R., Hohle M.M. <Mon. Not. R. Astron. Soc. 410, 190 (2011)> =2011MNRAS.410..190T
ADC_Keywords: Stars, early-type ; Stars, pre-main sequence ; Space velocities Keywords: catalogues - stars: early-type - stars: kinematics Abstract: Traditionally runaway stars are O and B type stars with large peculiar velocities. We want to extend this definition to young stars (up to ∼50Myr) of any spectral type and identify those present in the Hipparcos catalogue applying different selection criteria such as peculiar space velocities or peculiar one-dimensional velocities. Runaway stars are important to study the evolution of multiple star systems or star clusters as well as to identify origins of neutron stars. We compile distances, proper motions, spectral types, luminosity classes, V magnitudes and B-V colours and utilise evolutionary models from different authors to obtain star ages and study a sample of 7663 young Hipparcos stars within 3kpc from the Sun. Radial velocities are obtained from the literature. We investigate the distributions of the peculiar spatial velocity, the peculiar radial velocity as well as the peculiar tangential velocity and its one-dimensional components and obtain runaway star probabilities for each star in the sample. In addition, we look for stars that are situated outside any OB association or OB cluster and the Galactic plane as well as stars of which the velocity vector points away from the median velocity vector of neighbouring stars or the surrounding local OB association/cluster although the absolute velocity might be small. We find a total of 2547 runaway star candidates (with a contamination of normal Population I stars of 20 per cent at most). Thus, after subtraction of those 20 per cent, the runaway frequency among young stars is about 27 per cent. We compile a catalogue of runaway stars which will be available via VizieR. Description: We give Tables 1, 4, 5 (two parts) and 6 of the Paper as well as one additional table summarising all runaway star candidates found. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 74 7663 Ages, masses and spectral types for 7663 young stars table4.dat 104 2353 Runaway probabilities for 2353 runaway star candidates as found from their space velocities table5a.dat 81 326 Runaway probabilities from 3D velocities table5b.dat 81 321 Runaway probabilities from 2D velocity vectors table6.dat 74 6 Additional young stars situated well outside OB associations/clusters and the Galactic plane all.dat 42 2547 Runaway star candidates identified in the paper
See also: III/84 : Galactic O Stars (Cruz-Gonzalez+ 1974) I/239 : The Hipparcos and Tycho Catalogues (ESA 1997) I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007) J/A+A/331/949 : Wolf-Rayet and O-star runaways kinematics (Moffat+ 1998) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
2- 7 I6 --- HIP Hipparcos number 9- 27 A19 --- OName other designation 30- 33 F4.1 solMass Mass ? Mass (median from different evolutionary models) (1) 36- 39 F4.1 solMass e_Mass ? Median mass deviation (1) 48- 51 F4.1 Myr Age ? Age (median from different evolutionary models) (1) 56- 59 F4.1 Myr e_Age ? Median age deviation (1) 62- 74 A13 --- SpType MK spectral type
Note (1): if no value is given, the star entered the list due to its spectral type.
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HIP Hipparcos number 8- 24 A17 --- OName Other designation 26- 29 F4.2 --- PVpec ? Runaway probability (peculiar 3D spatial velocity vpec) 31- 34 F4.2 --- PU ? Runaway probability (peculiar 1D U) 36- 39 F4.2 --- PV ? Runaway probability (peculiar 1D V) 41- 44 F4.2 --- PW ? Runaway probability (peculiar 1D W) 46- 49 F4.2 --- PRVpec ? Runaway probability (peculiar 1D radial velocity vrpec) 51- 54 F4.2 --- PVtpec ? Runaway probability (peculiar 2D tangential velocity vtpec) 56- 61 F6.2 --- PVlpec ? Runaway probability (peculiar 1D vlpec) 63- 68 F6.2 --- PVbpec ? Runaway probability (peculiar 1D vbpec) 70- 74 F5.1 km/s Vpec ? Peculiar spatial velocity 76- 80 F5.1 km/s E_Vpec ? Error on Vpec (upper value) 82- 86 F5.1 km/s e_Vpec ? Error on vpec (lower value) 88- 92 F5.1 km/s Vtpec ? Peculiar tangential velocity 94- 98 F5.1 km/s E_Vtpec ? Error on vtpec (upper value) 100-104 F5.1 km/s e_Vtpec ? Error on vtpec (lower value)
Byte-by-byte Description of file: table5[ab].dat
Bytes Format Units Label Explanations
1- 6 I6 --- HIP Hipparcos number (Cat. I/311) 8- 22 A15 --- OName Other designation 26- 29 F4.2 --- Prun Runaway probability (comparison of 3D spatial velocity vectors of star and association) (1) 31- 40 A10 --- Clust Association or cluster name 42- 46 F5.1 km/s Vpec ? Peculiar spatial velocity 48- 52 F5.1 km/s E_Vpec ? Error on vpec (upper value) 54- 58 F5.1 km/s e_Vpec ? Error on vpec (lower value) 60- 64 F5.1 km/s Vtpec ? Peculiar tangential velocity 66- 70 F5.1 km/s E_Vtpec ? Error on vtpec (upper value) 72- 76 F5.1 km/s e_Vtpec ? Error on vtpec (lower value) 78- 81 A4 --- New "prev" if star present in table4, "new" otherwise
Note (1): Runaway probability is computed from the comparison of the velocities of the star and association: * comparison of 3D spatial velocity vectors in table5a * comparison of 2D tangential velocity vectors in table5b
Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HIP Hipparcos number (Cat. I/311) 8- 16 A9 --- OName Other designation 18- 21 I4 pc z Distance to the Galactic plane (pc) 23- 25 I3 pc E_z Error on z (pc) 27- 29 I3 pc e_z Error on z (pc) 31- 35 F5.1 km/s Wpec ?=- W velocity component in z direction (1) 37- 40 F4.1 km/s E_Wpec ?=- Error on Wpec (upper value) (1) 42- 45 F4.1 km/s e_Wpec ?=- Error on Wpec (lower value) (1) 47- 50 F4.1 km/s Vpec ?=- Peculiar spatial velocity (1) 52- 54 F3.1 km/s E_Vpec ?=- Error on Vpec (upper value) (1) 56- 59 F4.1 km/s e_Vpec ?=- Error on Vpec (lower value) (1) 61- 64 F4.1 km/s Vtpec ?=- Peculiar tangential velocity 66- 69 F4.1 km/s E_Vtpec ?=- Error on Vtpec (upper value) 71- 74 F4.1 km/s e_Vtpec ?=- Error on Vtpec (lower value)
Note (1): If no value is given ("-") the star has no radial velocity measured.
Byte-by-byte Description of file: all.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HIP Hipparcos number (Cat. I/311) 8- 12 F5.1 km/s Vpec ?=- Peculiar spatial velocity (1) 14- 18 F5.1 km/s E_Vpec ?=- Error on Vpec (upper value) (1) 20- 24 F5.1 km/s e_Vpec ?=- Error on Vpec (lower value) (1) 26- 30 F5.1 km/s Vtpec Peculiar tangential velocity 32- 36 F5.1 km/s E_Vtpec Error on Vtpec (upper value) 38- 42 F5.1 km/s e_Vtpec Error on Vtpec (lower value)
Note (1): If no value is given ("-") the star has no radial velocity measured.
Author's address: Nina Tetzlaff, nina(at)astro.uni-jena.de References: Stone, 1979ApJ...232..520S, Kinematics, close binary evolution, and ages of the O stars
(End) Nina Tetzlaff [AIU Jena] 16-Aug-2010
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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