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 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:
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RA (2000) DE Designation(s)
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10 00 47.7 -09 31 00 BD-08 2823 = HIP 49067
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 48 83 HARPS measurements of BD-08 2823
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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
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Bytes Format Units Label Explanations
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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)
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Acknowledgements:
Guillaume Hebrard, hebrard(at)iap.fr
References:
Pepe et al., Paper I 2004A&A...423..385P 2004A&A...423..385P
Lovis et al., Paper III 2005A&A...437.1121L 2005A&A...437.1121L
Moutou et al., Paper IV 2005A&A...439..367M 2005A&A...439..367M
Udry et al., Paper V 2006A&A...447..361U 2006A&A...447..361U
Bonfils et al., Paper VI 2005A&A...443L..15B 2005A&A...443L..15B
Lo Curto et al., Paper VII 2006A&A...451..345L 2006A&A...451..345L
Pepe et al., Paper VIII 2007A&A...462..769P 2007A&A...462..769P
Naef et al., Paper IX 2007A&A...470..721N 2007A&A...470..721N
Bonfils et al., Paper X 2007A&A...474..293B 2007A&A...474..293B, Cat. J/A+A/474/293
Udry et al., Paper XI 2007A&A...469L..43U 2007A&A...469L..43U, Cat. J/A+A/469/L43
Santos et al., Paper XII 2007A&A...474..647S 2007A&A...474..647S
Mayor et al., Paper XIII 2009A&A...493..639M 2009A&A...493..639M, Cat. J/A+A/493/639
Forveille et al., Paper XIV 2009A&A...493..645F 2009A&A...493..645F, Cat. J/A+A/493/645
Moutou et al., Paper XV 2009A&A...496..513M 2009A&A...496..513M, Cat. J/A+A/496/513
Correia et al., Paper XVI 2009A&A...496..521C 2009A&A...496..521C, Cat. J/A+A/496/521
Bouchy et al., Paper XVII 2009A&A...496..527B 2009A&A...496..527B, Cat. J/A+A/496/527
Mayor et al., Paper XVIII 2009A&A...507..487M 2009A&A...507..487M, Cat. J/A+A/507/487
Correia et al., Paper XIX 2010A&A...511A..21C 2010A&A...511A..21C
Santos et al., Paper XXI 2010A&A...512A..47S 2010A&A...512A..47S, Cat. J/A+A/512/A47
Lo Curto et al., Paper XXII 2010A&A...512A..48L 2010A&A...512A..48L, Cat. J/A+A/512/A48
Naef et al., Paper XXIII 2010A&A...523A..15N 2010A&A...523A..15N, Cat. J/A+A/523/A15
Mordasini et al., Paper XXIV 2011A&A...526A.111M 2011A&A...526A.111M, Cat. J/A+A/526/A111
Santos et al., Paper XXV 2011A&A...526A.112S 2011A&A...526A.112S, Cat. J/A+A/526/A112
Forveille et al., Paper XXVI 2011A&A...526A.141F 2011A&A...526A.141F, Cat. J/A+A/526/A141
Moutou et al., Paper XXVII 2011A&A...527A..63M 2011A&A...527A..63M, Cat. J/A+A/527/A63
Lovis et al., Paper XXVIII 2011A&A...528A.112L 2011A&A...528A.112L, Cat. J/A+A/528/A112
(End) Patricia Vannier [CDS] 29-Dec-2009