Access to Astronomical Catalogues

← Click to display the menu
J/A+A/535/A107  Spectroscopic survey of 479 thick disc stars (Kordopatis+, 2011)

A spectroscopic survey of thick disc stars outside the solar neighbourhood. Kordopatis G., Recio-Blanco A., de Laverny P., Gilmore G., Hill V., Wyse R.F.G., Helmi A., Bijaoui A., Ordenovic C., Zoccali M., Bienayme O. <Astron. Astrophys. 535, A107 (2011)> =2011A&A...535A.107K
ADC_Keywords: Stars, nearby ; Positional data ; Space velocities ; Abundances ; Effective temperatures ; Photometry Keywords: Galaxy: evolution - Galaxy: kinematics and dynamics - stars: abundances - methods: observational Abstract: In the era of large spectroscopic surveys, Galactic archaeology aims to understand the formation and evolution of the Milky Way by means of large datasets. In particular, the kinematic and chemical study of the thick disc can give valuable information on the merging history of the Milky Way. Our aim is to detect and characterise the Galactic thick disc chemically and dynamically by analysing F, G and K stars, whose atmospheres reflect their initial chemical composition. We performed a spectroscopic survey of nearly 700 stars probing the Galactic thick disc far from the solar neighbourhood towards the Galactic coordinates (l∼277°, b∼47°). The derived effective temperatures, surface gravities and overall metallicities were then combined with stellar evolution isochrones, radial velocities and proper motions to derive the distances, kinematics and orbital parameters of the sample stars. The targets belonging to each Galactic component (thin disc, thick disc, halo) were selected either on their kinematics or according to their position above the Galactic plane, and the vertical gradients were also estimated. Description: These tables contain all the parameters that have been computed, based on the LR8 spectra of targets selected in order to investigate the galactic thick disc outside the solar neighbourhood. The atmospheric parameters and the signal-to-noise ratio (SNR) were computed using the pipeline presented in Kordopatis et al. (2011A&A...535A.106K). The line-of-sight distances were computed by projecting the atmospheric parameters on the Yonsei-Yale isochrones. The velocities and eccentricities were computed using the radial velocities derived by cross-correlation of the spectra with a synthetic mask, and using the proper motions of Ojha et al. (1996A&A...311..456O) No selection has been made on SNR in these tables. A value of -999.99 is meaning that the data for that star is not available File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 100 479 Kinematic parameters of the targets table2.dat 61 479 Atmospheric parameters of the targets table4.dat 73 479 Positions and coordinates of the targets
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Sequential number of the star 5- 12 F8.3 10mas/yr pmGlon ?=-999.990 Proper motion along galactic longitude 14- 21 F8.3 10mas/yr pmGlat ?=-999.990 Proper motion along galactic latitude 23- 27 F5.1 km/s HRV Heliocentric radial velocity 29- 31 F3.1 km/s e_HRV Error on radial velocity 33- 37 I5 km/s Uvel ?=-999 U cartesian velocity coordinate w.r.t. the LSR 39- 42 I4 km/s e_Uvel ?=-999 Error on Uvel 44- 48 I5 km/s Vvel ?=-999 V cartesian velocity coordinate w.r.t. the LSR 50- 53 I4 km/s e_Vvel ?=-999 Error on Vvel 55- 58 I4 km/s Wvel ?=-999 W cartesian velocity coordinate w.r.t. the LSR 60- 63 I4 km/s e_Wvel ?=-999 Error on Wvel 65- 68 I4 km/s Vg.r ?=-999 Radial component VR of galactocentric cylindrical velocity 70- 73 I4 km/s e_Vg.r ?=-999 Error on Vg.r 75- 79 I5 km/s Vphi ?=-999 Orthoradial component V_φ of galactocentric cylindrical velocity 81- 84 I4 km/s e_Vphi ?=-999 Error on Vphi 86- 92 F7.2 --- ecc ?=-999.99 Eccentricity of the galactic orbit 94-100 F7.2 --- e_ecc ?=-999.99 Error on eccentricity
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Sequential number of the star 5- 8 I4 K Teff Effective temperature 10- 12 I3 K e_Teff Error on effective temperature 14- 17 F4.2 [cm/s2] logg Surface gravity 19- 22 F4.2 [cm/s2] e_logg Error on surface gravity 24- 28 F5.2 [Sun] [M/H] Overall metallicity 30- 33 F4.2 [Sun] e_[M/H] Error on overall metallicity 35- 39 F5.2 mag Vmag Relative V magnitude 41- 45 F5.2 mag B-V ?=-9.99 B-V colour index 47- 51 F5.2 mag VMAG Absolute V magnitude 53- 56 F4.2 mag e_VMAG Error on the absolute V magnitude 58- 61 I4 --- SNR Measured signal-to-noise ratio
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Sequential number of the star 5- 11 F7.3 deg Glon Galactic longitude 12- 18 F7.3 deg Glat Galactic latitude 20- 24 I5 pc Dist Line-of-sight distance 26- 29 I4 pc e_Dist Error on line-of-sight distance 31- 34 I4 pc X Heliocentric X position (toward galactic center) 36- 39 I4 pc e_X Error on the X position 41- 46 I6 pc Y Heliocentric Y position 48- 51 I4 pc e_Y Error on the Y position 53- 57 I5 pc Z Heliocentric Z position (toward galactic North) 59- 62 I4 pc e_Z Error on the Z position 64- 68 I5 pc R Galactocentric cylindrical R coordinate 70- 73 I4 pc e_R Error galactocentric cylindrical R coordinate
Acknowledgements: Georges Kordopatis, Georges.Kordopatis(at)
(End) Patricia Vannier [CDS] 24-Oct-2011
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

catalogue service