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J/A+A/536/A71     Atmospheric parameters of nearby giant stars    (Jones+, 2011)

Study of the impact of the post-MS evolution of the host star on the orbits of close-in planets. I. Sample definition and physical properties. Jones M.I., Jenkins J.S., Rojo P., Melo C.H.F. <Astron. Astrophys. 536, A71 (2011)> =2011A&A...536A..71J
ADC_Keywords: Stars, giant ; Abundances, [Fe/H] ; Rotational velocities ; Spectroscopy Keywords: stars: fundamental parameters - stars: horizontal-branch - planet-star interactions Abstract: We are conducting a precision radial velocity study of a sample of 164 nearby giant stars in the southern hemisphere. In this work we present the spectroscopic atmospheric parameters (Teff, logg , vmic and [Fe/H]) for all of our targets. By comparing the position on the HR diagram with stellar evolutionary tracks, we derived the mass, radius and evolutionary status for every star in our sample. In addition, rotational velocities are also measured. Description: We used high resolution and high S/N spectra to measure the equivalent widths of many FeI and FeII lines, which were used to derive the atmospheric parameters by imposing local thermodynamic and ionization equilibrium. The effective temperatures and metallicities were used, along with stellar evolutionary tracks to determine the physical properties and evolutionary status of each star. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 86 164 Spectroscopic atmospheric parameters for all of our targets
See also: I/239 : The Hipparcos and Tycho Catalogues (ESA 1997) I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HIP The Hipparcos identification number (1) 8- 11 F4.2 mag B-V Hipparcos B-V color index (1) 13- 16 F4.2 mag Vmag Hipparcos apparent V magnitude (1) 18- 22 F5.2 mas plx Hipparcos parallax (2) 24- 27 F4.2 mas e_plx Error in parallax (2) 29- 33 F5.3 mag AV Visual extinction (3) 35- 38 I4 K Teff Effective temperature 40- 43 F4.2 [cm/s2] logg Spectroscopic surface gravity 45- 48 F4.2 km/s vt Microturbulent velocity ξ 50- 54 F5.2 [Sun] [Fe/H] Iron abundance relative to the sun 56- 59 F4.2 [Sun] e_[Fe/H] Error in [Fe/H] 61- 65 F5.3 [Lsun] logL Logarithmic absolute luminosity 67- 70 F4.2 Msun Mass Mass derived from spectral parameters and evolutionary tracks (4) 72- 77 F6.3 Rsun Rad Stellar radius (4) 79- 81 A3 --- St [RGB HB] Evolutionary status (Red Giant or Horizontal Branch star) 83- 86 F4.2 km/s vsini Projected rotational velocity
Note (1): Hipparcos catalogue. Perryman et al. (1997A&A...323L..49P, Cat. I/239) Note (2): Improved reduction of Hipparcos data. van Leeuwen (2007A&A...474..653V, Cat. I/311) Note (3): Computed from Arenou et al. (1992A&A...258..104A) 3-D extinction maps. Note (4): Physical parameters derived comparing the position in the HR diagram with evolutionary tracks from Salasnich et al. (2000, Cat. J/A+A/361/1023)
Acknowledgements: Matias Jones, mjones(at)das.uchile.cl
(End) Patricia Vannier [CDS] 03-Nov-2011
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