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J/A+A/495/959       Radial velocity curve of HD 189733       (Boisse+, 2009)

Stellar activity of planetary host star HD 189733. Boisse I., Moutou C., Vidal-Madjar A., Bouchy F., Pont F., Hebrard G., Bonfils X., Croll B., Delfosse X., Desort M., Forveille T., Lagrange A.-M., Loeillet B., Lovis C., Matthews J.M., Mayor M., Pepe F., Perrier C., Queloz D., Rowe J.F., Santos N.C., Segransan D., Udry S. <Astron. Astrophys. 495, 959 (2009)> =2009A&A...495..959B
ADC_Keywords: Stars, late-type; Planets ; Radial velocities Keywords: techniques: radial velocities - stars: planetary system - stars: individual: HD 189733 - stars: activity Abstract: Extra-solar planet search programs require high-precision velocity measurements. They need to study how to disentangle radial-velocity variations due to Doppler motion from the noise induced by stellar activity. We monitored the active K2V star HD 189733 and its transiting planetary companion that has a 2.2-day orbital period. We used the high-resolution spectrograph SOPHIE mounted on the 1.93-m telescope at the Observatoire de Haute-Provence to obtain 55 spectra of HD 189733 over nearly two months. We refined the HD 189733b orbit parameters and put limits on the eccentricity and on a long-term velocity gradient. After subtracting the orbital motion of the planet, we compared the variability of spectroscopic activity indices to the evolution of the radial-velocity residuals and the shape of spectral lines. The radial velocity, the spectral-line profile and the activity indices measured in HeI (5875.62Å), Halpha (6562.81Å) and the CaII H&K lines (3968.47Å and 393 3.66Å) show a periodicity around the stellar rotation period and the correlations between them are consistent with a spotted stellar surface in rotation. We used such correlations to correct for the radial-velocity jitter due to stellar activity. This results in achieving high precision on the orbit parameters, with a semi-amplitude K=200.56±0.88m/s and a derived planet mass of MP=1.13±0.03M{Jup}. Description: Radial velocity measurements of HD 189733. Measurements with too low signal to noise ratio, made during the transit of the planetary HD 189733b and those polluted by the Moon are removed. The error on radial velocity is a quadratical sum of the photon-noise error, the uncertainty on the wavelength calibration and an estimation of the SOPHIE current systematics. Objects: ------------------------------------------------- RA (2000) DE Designation(s) ------------------------------------------------- 20 00 43.7 +22 42 39 HD 189733 = V* V452 Vul ------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 29 33 Radial velocity measurements of HD 189733
See also: J/A+A/476/1347 : HST/ACS flux time series for HD 189733 (Pont+, 2007) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 12 F12.4 d BJD Barycentric Julian Date 15- 21 F7.4 km/s HRV Heliocentric radial velocity 24- 29 F6.4 km/s e_HRV Error on radial velocity
Acknowledgements: Isabelle Boisse, iboisse(at)iap.fr
(End) Patricia Vannier [CDS] 18-Oct-2008
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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