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J/A+A/512/A46       Radial velocities of BD-08 2823          (Hebrard+, 2010)

The HARPS search for southern extra-solar planets. XX. Planets around the active star BD-08 2823 Hebrard G., Udry S., Lo Curto G., Robichon N., Naef D., Ehrenreich D., Benz W., Bouchy F., Lecavelier des Etangs A., Lovis C., Mayor M., Moutou C., Pepe F., Queloz D., Santos N.C., Segransan D. <Astron. Astrophys. 512, A46 (2010)> =2010A&A...512A..46H
ADC_Keywords: Planets ; Radial velocities Keywords: planetary systems - techniques: radial velocities - stars: individual: BD-08 2823 - techniques: photometric Abstract: We report the detection of a planetary system around BD-08 2823, that includes at least one Uranus-mass planet and one Saturnmass planet. This discovery serendipitously originates from a search for planetary transits in the Hipparcos photometry database. This program preferentially selected active stars and did not allow the detection of new transiting planets. It allowed however the identification of the K3V star BD-08 2823 as a target harboring a multiplanet system, that we secured and characterized thanks to an intensive monitoring with the HARPS spectrograph at the 3.6-m ESO telescope in La Silla. The stellar activity level of BD-08 2823 complicates the analysis but does not prohibit the detection of two planets around this star. BD-08 2823b has a minimum mass of 14.4±2.1M{earth} and an orbital period of 5.60days, whereas BD-08 2823c has a minimum mass of 0.33±0.03M{Jup} and an orbital period of 237.6days. This new system strengthens the fact that low-mass planets are preferentially found in multiplanetary systems, but not around high-metallicity stars as this is the case for massive planets. It also supports the belief that active stars should not be neglected in exoplanet searches, even when searching for low-mass planets. Description: We observed BD -08 2823 using the HARPS spectrograph at the 3.6-m ESO telescope in La Silla. The bandpass of the spectra ranges from 3800Å to 6900Å and the resolution power is R=115000, with a fiber diameter of 1arcsec. Objects: ------------------------------------------------- RA (2000) DE Designation(s) ------------------------------------------------- 10 00 47.7 -09 31 00 BD-08 2823 = HIP 49067 ------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 48 83 HARPS measurements of BD-08 2823
See also: J/A+A/469/L43 : Radial velocities of Gl 581 (Udry+, 2007) J/A+A/474/293 : Radial velocities of GJ 674 (Bonfils+, 2007) J/A+A/493/639 : Velocity curves of HD 40307 (Mayor+, 2009) J/A+A/493/645 : Gl 176 radial velocities (Forveille+, 2009) J/A+A/496/513 : RV of 6 stars with long-period giant planets (Moutou+, 2009) J/A+A/496/521 : Radial velocities of HD45364 (Correia+, 2009) J/A+A/496/527 : Radial velocity curves of HD 47186 & HD 181433 (Bouchy+, 2009) J/A+A/507/487 : GJ 581 radial velocity curve (Mayor+, 2009) J/A+A/512/A47 : Radial velocites 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 metail-poor sample (Santos+ 2011) J/A+A/526/A141 : HIP 85647 & Gl 676A radial velocities (Forveille+, 2011) J/A+A/527/A63 : 7 new HARPS planetary systems radial velocities (Moutou+ 2011) J/A+A/528/A112 : Radial velocities of HD 10180 (Lovis+, 2011) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 13 F13.5 d BJD Barycentric Julian Day of the observations 15- 21 F7.4 km/s RV Radial velocity 23- 28 F6.4 km/s e_RV rms uncertainty of RV 30- 34 F5.3 km/s FWHM Full width at half maximum of the cross-correlation function (CCF) 36- 41 F6.4 km/s Span Bisector span of the cross-correlation function (CCF) 43- 48 F6.3 --- logR'(HK) Activity index Log R'(HK)
Acknowledgements: Guillaume Hebrard, hebrard(at) References: Pepe et al., Paper I 2004A&A...423..385P Lovis et al., Paper III 2005A&A...437.1121L Moutou et al., Paper IV 2005A&A...439..367M Udry et al., Paper V 2006A&A...447..361U Bonfils et al., Paper VI 2005A&A...443L..15B Lo Curto et al., Paper VII 2006A&A...451..345L Pepe et al., Paper VIII 2007A&A...462..769P Naef et al., Paper IX 2007A&A...470..721N Bonfils et al., Paper X 2007A&A...474..293B, Cat. J/A+A/474/293 Udry et al., Paper XI 2007A&A...469L..43U, Cat. J/A+A/469/L43 Santos et al., Paper XII 2007A&A...474..647S Mayor et al., Paper XIII 2009A&A...493..639M, Cat. J/A+A/493/639 Forveille et al., Paper XIV 2009A&A...493..645F, Cat. J/A+A/493/645 Moutou et al., Paper XV 2009A&A...496..513M, Cat. J/A+A/496/513 Correia et al., Paper XVI 2009A&A...496..521C, Cat. J/A+A/496/521 Bouchy et al., Paper XVII 2009A&A...496..527B, Cat. J/A+A/496/527 Mayor et al., Paper XVIII 2009A&A...507..487M, Cat. J/A+A/507/487 Correia et al., Paper XIX 2010A&A...511A..21C Santos et al., Paper XXI 2010A&A...512A..47S, Cat. J/A+A/512/A47 Lo Curto et al., Paper XXII 2010A&A...512A..48L, Cat. J/A+A/512/A48 Naef et al., Paper XXIII 2010A&A...523A..15N, Cat. J/A+A/523/A15 Mordasini et al., Paper XXIV 2011A&A...526A.111M, Cat. J/A+A/526/A111 Santos et al., Paper XXV 2011A&A...526A.112S, Cat. J/A+A/526/A112 Forveille et al., Paper XXVI 2011A&A...526A.141F, Cat. J/A+A/526/A141 Moutou et al., Paper XXVII 2011A&A...527A..63M, Cat. J/A+A/527/A63 Lovis et al., Paper XXVIII 2011A&A...528A.112L, Cat. J/A+A/528/A112
(End) Patricia Vannier [CDS] 29-Dec-2009
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