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J/A+A/534/A58  HD20794, HD85512, HD192310 HARPS radial velocities  (Pepe+, 2011)

The HARPS search for Earth-like planets in the habitable zone. I. Very low-mass planets around HD 20794, HD 85512 and HD 192310. Pepe F., Lovis C., Segransan D., Benz W., Bouchy F., Dumusque X., Mayor M., Queloz D., Santos N.C., Udry S. <Astron. Astrophys. 534, A58 (2011)> =2011A&A...534A..58P
ADC_Keywords: Stars, double and multiple ; Planets ; Radial velocities Keywords: planetary systems - instrumentation: spectrographs - techniques: radial velocities - stars: individual: HD 20794 - stars: individual: HD 85512 - stars: individual: HD 192310 Abstract: In 2009 we started, within the dedicated HARPS-Upgrade GTO program, an intense radial-velocity monitoring of a few nearby, slowly-rotating and quiet solar-type stars. The goal of this campaign is to gather, with high cadence and continuity, very-precise radial-velocity data in order to detect tiny signatures of very-low-mass stars potentially in the habitable zone of their parent stars. 10 stars have been selected among the most stable stars of the original HARPS high-precision program, uniformly spread in hour angle, such that three to four of them are observable at any time of the year. For each star we record 50 data points spread over the observing season. The data point consists of three nightly observations of a total integration time of 10 minutes each and separated by 2 hours. This is an observational strategy adopted to minimize stellar pulsation and granulation noise. In this paper we present the first results of this ambitious program. The radial-velocity data and the orbital parameters of five new and one confirmed low-mass planets around the stars HD 20794, HD 85512 and HD 192310, respectively, are reported and discussed, among which a system of three super-Earths and one harboring a 3.6-Earth-mass planet at the inner edge of the habitable zone. This result already confirms previous indications that low-mass planets seem to be very frequent around solar-type stars and that this occurrence frequency may be higher than 30%. Description: HARPS radial velocities, CCF FWHM, bisector span and log(R'HK) measurements for HD 20794, HD 85512 and HD 192310 and corresponding internal errors are provided in three separate tables. The radial velocities are corrected from the Earth barycentric motion and are given as nightly averages of several shorter measurements. Radial velocities, line width (FWHM) and line bisector are all computed on the cross-correlation function (CCF), which represents a sort of average spectral line. The log(R'HK) values are provided by the online HARPS data pipeline. Objects: ---------------------------------------------------------------------- RA (2000) DE Designation(s) (files) ---------------------------------------------------------------------- 03 19 55.7 -43 04 11 HD 20794 = HIP 15510 = GJ 139 (table1.dat) 09 51 07.1 -43 30 10 HD 85512 = HIP 48331 = GJ 370 (table2.dat) 20 15 17.4 -27 01 58 HD 192310 = HIP 99825 = GJ 785 (table3.dat) ---------------------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 80 187 HD 20794 HARPS data table2.dat 80 185 HD 85512 HARPS data table3.dat 80 142 HD 192310 HARPS data
See also: J/A+A/474/293 : Radial velocities of GJ 674 (Bonfils+, 2007) J/A+A/469/L43 : Radial velocities of Gl 581 (Udry+, 2007) J/A+A/496/513 : RV of 6 stars with long-period giant planets (Moutou+, 2009) J/A+A/496/521 : Radial velocities of HD 45364 (Correia+, 2009) J/A+A/496/527 : Radial velocity of HD 47186 and HD 181433 (Bouchy+, 2009) J/A+A/507/487 : GJ 581 radial velocity curve (Mayor+, 2009) J/A+A/512/A46 : Radial velocities of BD-08 2823 (Hebrard+, 2010) J/A+A/512/A47 : Radial velocities of 3 stars with giant planets (Santos+ 2010) J/A+A/512/A48 : HD125612, HD215497, HIP5158 HARPS RV curves (Lo Curto+, 2010) J/A+A/523/A15 : RV data for the 8 targets (Naef+, 2010) J/A+A/526/A111 : HD 85390, 90156 and 103197 radial velocity (Mordasini+, 2011) J/A+A/526/A112 : Radial velocities of HARPS metal-poor sample (Santos+ 2011) J/A+A/526/A141 : HIP 85647 & Gl 676A radial velocities (Forveille+, 2011) J/A+A/527/L11 : HAT-P-6 radial velocity curve (Hebrard+, 2011) J/A+A/527/A63 : 7 new HARPS planetary systems radial velocities (Moutou+ 2011) J/A+A/528/A111 : GJ3634 radial velocity and 4.5um flux (Bonfils+, 2011) J/A+A/528/A112 : Radial velocities of HD 10180 (Lovis+, 2011) J/A+A/531/A24 : WASP-23 photometric and radial velocity data (Triaud+, 2011) Byte-by-byte Description of file: table1.dat table2.dat table3.dat
Bytes Format Units Label Explanations
1- 13 F13.5 d BJD Barycentric Julian Date 16- 24 F9.5 km/s RV Radial velocity 26- 32 F7.5 km/s e_RV rms uncertainty on radial velocity 34- 40 F7.5 km/s FWHM Cross-correlation function (CCF) FWHM 42- 48 F7.5 km/s e_FWHM rms uncertainty on CCF FWHM 50- 57 F8.5 km/s Span Bisector span of the cross-correlation function 59- 65 F7.5 km/s e_Span rms uncertainty on bisector span 67- 73 F7.4 [-] logR'(HK) Activity index logR'(HK) 75- 80 F6.4 [-] e_logR'(HK) rms uncertainty on logR'(HK)
Acknowledgements: Christophe Lovis, christophe.lovis(at) Francesco Pepe, Francesco.Pepe(at)
(End) Patricia Vannier [CDS] 25-Aug-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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