J/A+A/511/A45 HD 147018, 171238 and 204313 radial velocities (Segransan+, 2010)
The CORALIE survey for southern extrasolar planets.
XVI. Discovery of a planetary system around HD 147018 and of two long period and
massive planets orbiting HD 171238 and HD 204313.
Segransan D., Udry S., Mayor M., Naef D., Pepe F., Queloz D., Santos N.C.,
Demory B-O., Figueira P., Gillon M., Marmier M., Megevand D., Sosnowska D.,
Tamuz O., Triaud A.H.M.J.
<Astron. Astrophys. 511, A45 (2010)>
=2010A&A...511A..45S 2010A&A...511A..45S
ADC_Keywords: Stars, G-type ; Radial velocities ; Planets
Keywords: planetary systems - binaries: visual - techniques: radial velocities -
stars: individual: HD 147018 - stars: individual: HD 171238 -
stars: individual: HD 204313
Abstract:
We report the detection of a double planetary system around HD140718
as well as the discovery of two long period and massive planets
orbiting HD171238 and HD204313. Those discoveries were made with the
CORALIE Echelle spectrograph mounted on the 1.2-m Euler Swiss
telescope located at La Silla Observatory, Chile. The planetary system
orbiting the nearby G9 dwarf HD147018 is composed of an eccentric
inner planet (e=0.47) with twice the mass of Jupiter (2.1MJup) and
with an orbital period of 44.24-days. The outer planet is even more
massive (6.6MJup) with a slightly eccentric orbit (e=0.13) and a
period of 1008-days. The planet orbiting HD171238 has a minimum mass
of 2.6MJup, a period of 1523-days and an eccentricity of 0.40. It
orbits a G8 dwarfs at 2.5AU. The last planet, HD204313 b, is a 4.0
MJup-planet with a period of 5.3-years and has a low eccentricity
(e=0.13). It orbits a G5 dwarfs at 3.1AU. The three parent stars are
metal rich, which further strengthened the case that massive planets
tend to form around metal rich stars.
Description:
We present here radial-velocity measurements for 3 low mass stars:
HD 147018, HD 171238 and HD204313. These radial velocities were
obtained using the CORALIE echelle spectrograph mounted on the 1.2-m
Euler Swiss telescope at the ESO-La Silla Observatory (Chile).
Objects:
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RA (2000) DE Designation(s) (files)
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16 23 00.1 -61 41 20 HD 147018 = HIP 80250 (table1.dat)
18 34 43.7 -28 04 20 HD 171238 = HIP 91085 (table2.dat)
21 28 12.2 -21 43 35 HD 204313 = HIP 106006 (table3.dat)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 37 101 Radial velocity measurements for HD 147018
table2.dat 37 99 Radial velocity measurements for HD 171238
table3.dat 37 97 Radial velocity measurements for HD 204313
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See also:
J/A+A/356/590 : CORALIE survey for extrasolar planets. II (Udry+, 2000)
J/A+A/375/205 : CORALIE survey for extrasolar planets. V (Naef+ 2001)
J/A+A/379/999 : CORALIE survey for extrasolar planets. VI (Santos+ 2001)
J/A+A/388/632 : CORALIE survey for extrasolar planets. VII (Pepe+, 2002)
J/A+A/390/267 : CORALIE survey for extrasolar planets. VIII (Udry+, 2002)
J/A+A/392/215 : CORALIE survey for extrasolar planets. IX (Santos+ 2002)
J/A+A/406/373 : CORALIE survey for extrasolar planets. XI (Santos+, 2003)
J/A+A/415/391 : CORALIE survey for extrasolar planets. XII (Mayor+, 2004)
J/A+A/447/1159 : CORALIE survey for extrasolar planets. XIV (Eggenberger+ 2006)
J/A+A/480/L33 : CORALIE survey for extrasolar planets. XV (Tamuz+ 2008)
Byte-by-byte Description of file: table1.dat table2.dat table3.dat
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Bytes Format Units Label Explanations
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1- 14 F14.6 d BJD Barycentric Julian date
17- 25 F9.5 km/s RV Barycentric radial velocity (1)
27- 33 F7.5 km/s e_RV Full RV uncertainty
35- 37 A3 -- Inst [C98,C07] Instrument (2)
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Note (1): The CORALIE Echelle spectrograph was upgraded in July 2007 which
affected the instrument zero point. We decided to refer to the
original CORALIE as CORALIE-98 and to the upgraded one as CORALIE-07.
When using both set of data, the instrumental zero point should be
adjusted.
Note (2): Instrument used as follows:
C98 = CORALIE-98
C07 = CORALIE-07
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Acknowledgements:
Damien Segransan, Damien.Segransan(at)unige.ch
References:
Queloz et al., Paper I 2000A&A...354...99Q 2000A&A...354...99Q
Udry et al., Paper II 2000A&A...356..590U 2000A&A...356..590U, Cat. J/A+A/356/590
Santos et al., Paper III 2000A&A...356..599S 2000A&A...356..599S
Santos et al., Paper IV 2000A&A...361..265S 2000A&A...361..265S
Santos et al., Paper V 2001A&A...375..205S 2001A&A...375..205S, Cat. J/A+A/375/205
Santos et al., Paper VI 2001A&A...379..999S 2001A&A...379..999S, Cat. J/A+A/379/999
Pepe et al., Paper VII 2002A&A...388..632P 2002A&A...388..632P, Cat. J/A+A/388/632
Udry et al., Paper VIII 2002A&A...390..267U 2002A&A...390..267U, Cat. J/A+A/390/267
Santos et al., Paper IX 2002A&A...392..215S 2002A&A...392..215S, Cat. J/A+A/392/215
Udry et al., Paper X 2003A&A...407..679U 2003A&A...407..679U
Santos et al., Paper XI 2003A&A...406..373S 2003A&A...406..373S, Cat. J/A+A/406/373
Mayor et al., Paper XII 2004A&A...415..391M 2004A&A...415..391M, Cat. J/A+A/415/391
Correia et al., Paper XIII 2005A&A...440..751C 2005A&A...440..751C
Eggenberger et al., Paper XIV 2006A&A...447.1159E 2006A&A...447.1159E, Cat. J/A+A/447/1159
Tamuz et al., Paper XV 2008A&A...480L..33T 2008A&A...480L..33T, Cat. J/A+A/480/L33
(End) Patricia Vannier [CDS] 29-Jan-2010