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J/A+A/526/A127 Velocities of M67 main-sequence and giant stars (Pasquini+, 2011)

Gravitational redshifts in main-sequence and giant stars. Pasquini L., Melo C., Chavero C., Dravins D., Ludwig H.-G., Bonifacio P., De La Reza R. <Astron. Astrophys. 526, A127 (2011)> =2011A&A...526A.127P
ADC_Keywords: Clusters, open ; Stars, dwarfs ; Stars, giant ; Radial velocities ; Rotational velocities Keywords: stars: fundamental parameters - galaxies: star clusters : individual: M67 - stars: late-type - stars: atmospheres - techniques: radial velocities - gravitation Abstract: Precise analyses of stellar radial velocities is able to reveal intrinsic causes of the wavelength shifts of spectral lines (other than Doppler shifts due to radial motion), such as gravitational redshifts and convective blueshifts. Aims. Gravitational redshifts in solar-type main-sequence stars are expected to be some 500m/s greater than those in giants. We search for this difference in redshifts among groups of open-cluster stars that share the same average space motion and thus have the same average Doppler shift. Description: We observed 144 main-sequence stars and cool giants in the M67 open cluster using the ESO FEROS spectrograph and obtained radial velocities by means of cross-correlation with a spectral template. Binaries and doubtful members were not analyzed, and average spectra were created for different classes of stars. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 42 163 Observed targets in M67
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 9 A9 --- Name Object name (1) 11- 15 F5.3 mag B-V ?=- B-V colour index 17- 21 F5.2 mag Vmag ?=- V magnitude 23- 28 F6.2 km/s RV Radial velocity (accuracy ∼ 20m/s) 30 A1 --- l_vsini Limit flag on vsini 31- 34 F4.1 km/s vsini Projected rotational velocity 36- 42 A7 --- Source Source of the data (2)
Note (1): For object identifications: * S NNNN are from Sanders (1977A&AS...27...89S), <Cl* NGC 2682 Sand NNNN> in Simbad * MMJNNNN from Montgomery et al. (1993, Cat. J/AJ/106/181), <Cl* NGC 2682 MMJ NNNN> in Simbad Note (2): Data source are either Paper I (Melo et al., 2001A&A...375..851M) or the observing runs described in Section 3.
Acknowledgements: Luca Pasquini, lpasquin(at) References: Melo et al., Paper I 2001A&A...375..851M
(End) Patricia Vannier [CDS] 06-Jan-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

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