J/A+A/526/A112 Radial velocities of HARPS metal-poor sample (Santos+, 2011)
The HARPS search for southern extrasolar planets.
XXV. Results from the metal-poor sample.
Santos N.C., Mayor M., Bonfils X., Dumusque X., Bouchy F., Figueira P.,
Lovis C., Melo C., Pepe F., Queloz D., Segransan D., Sousa S.G., Udry S.
<Astron. Astrophys. 526, A112 (2011)>
=2011A&A...526A.112S 2011A&A...526A.112S
ADC_Keywords: Stars, metal-deficient ; Planets ; Radial velocities ;
Abundances, [Fe/H]
Keywords: techniques: radial velocities - techniques: spectroscopic -
planetary and satellites: formation - planetary systems -
stars: abundances -
Abstract:
Searching for extrasolar planets around stars of different metallicity
may provide strong constraints to the models of planet formation and
evolution. In this paper we present the overall results of a HARPS (a
high-precision spectrograph mostly dedicated to deriving precise
radial velocities) program to search for planets orbiting a sample of
104 metal-poor stars (selected [Fe/H] below -0.5). Radial velocity
time series of each star are presented and searched for signals using
several statistical diagnostics. tars with detected signals are
presented, including 3 attributed to the presence of previously
announced giant planets orbiting the stars HD171028, HD181720, and
HD190984. Several binary stars and at least one case of a coherent
signal caused by activity-related phenomena are presented. One very
promising new, possible giant planet orbiting the star HD107094 is
discussed, and the results are analyzed in light of the
metallicity-giant planet correlation. We conclude that the frequency
of giant planets orbiting metal-poor stars may be higher than
previously thought, probably reflecting the higher precision of the
HARPS survey. In the metallicity domain of our sample, we also find
evidence that the frequency of planets is a steeply rising function of
the stellar metal content, as found for higher metallicity stars.
Description:
The tables contain the star list, its parameters, and the HARPS radial
velocity data.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 38 104 List of targets, coordinates and magnitudes
table3.dat 84 88 Sample star parameters
tablerv.dat 44 1184 Radial velocities for 91 stars
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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 HD45364 (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 radial velocities (Lo Curto+ 2010)
J/A+A/523/A15 : HARPS XXIII: 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/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- 10 A10 --- Star Star name
12- 13 I2 h RAh Right ascension (J2000.0)
15- 16 I2 min RAm Right ascension (J2000.0)
18- 21 F4.1 s RAs Right ascension (J2000.0)
23 A1 --- DE- Declination sign (J2000)
24- 25 I2 deg DEd Declination (J2000)
27- 28 I2 arcmin DEm Declination (J2000)
30- 31 I2 arcsec DEs Declination (J2000)
33- 36 F4.1 mag Vmag Visual magnitude
38 A1 --- RV [*] * indicates RV data in tablerv.dat
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Star Star name
12- 13 I2 --- Nmes Number of measurements
15- 18 I4 d Span Total span of the measurements
20- 25 F6.1 km/s Gamma Average radial velocity
27- 30 I4 K Teff Effective temperature
32- 34 I3 K e_Teff Error in effective temperature
36- 39 F4.2 [cm/s2] logg Surface gravity
41- 44 F4.2 [cm/s2] e_logg Error in surface gravity
46- 50 F5.2 [Sun] [Fe/H] Stellar metallicity
52- 55 F4.2 [Sun] e_[Fe/H] Error in stellar metallicity
57- 61 F5.3 --- SMW Activity level index SMW
63- 67 F5.3 --- e_SMW Error in activity level index SMW
69- 73 F5.3 mag B-V B-V colour index
75- 79 F5.2 --- log(R'HK) Activity index log(R'HK)
81 A1 --- l_vsini Limit flag on vsin
82- 84 F3.1 km/s vsini Projected rotational velocity
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Byte-by-byte Description of file: tablerv.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Star Star name
12- 25 F14.6 d JD Julian Date
27- 36 F10.5 km/s RV Radial velocity
38- 44 F7.5 km/s e_RV Error in radial velocity
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Acknowledgements:
Nuno C. Santos, nuno.santos(at)astro.up.pt
References:
Pepe et al., Paper I 2004A&A...423..385P 2004A&A...423..385P
Santos et al., Paper II 2004A&A...426L..19S 2004A&A...426L..19S
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
Hebrard et al., Paper XX 2010A&A...512A..46H 2010A&A...512A..46H, Cat. J/A+A/512/A46
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
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) Nuno Santos [CAUP, Portugal], Patricia Vannier [CDS] 15-Nov-2010