J/ApJ/800/22 Radial velocities of long-period planets (Feng+, 2015)
The California planet survey IV: a planet orbiting the giant star HD 145934 and
updates to seven systems with long-period planets.
Feng Y.K., Wright J.T., Nelson B., Wang S.X., Ford E.B., Marcy G.W.,
Isaacson H., Howard A.W.
<Astrophys. J., 800, 22 (2015)>
=2015ApJ...800...22F 2015ApJ...800...22F
ADC_Keywords: Radial velocities ; Stars, double and multiple ; Planets
Keywords: planetary systems; stars: individual: (HD 145934, GJ 849);
techniques: radial velocities
Abstract:
We present an update to seven stars with long-period planets or
planetary candidates using new and archival radial velocities from
Keck-HIRES and literature velocities from other telescopes. Our
updated analysis better constrains orbital parameters for these
planets, four of which are known multi-planet systems. HD24040b and
HD183263c are super-Jupiters with circular orbits and periods longer
than 8yr. We present a previously unseen linear trend in the residuals
of HD 66428 indicative of an additional planetary companion. We
confirm that GJ 849 is a multi-planet system and find a good orbital
solution for the c component: it is a 1MJup planet in a 15yr orbit
(the longest known for a planet orbiting an M dwarf). We update the
HD74156 double-planet system. We also announce the detection of
HD145934b, a 2MJup planet in a 7.5yr orbit around a giant star. Two
of our stars, HD187123 and HD217107, at present host the only known
examples of systems comprising a hot Jupiter and a planet with a well
constrained period greater than 5yr, and with no evidence of giant
planets in between. Our enlargement and improvement of long-period
planet parameters will aid future analysis of origins, diversity, and
evolution of planetary systems.
Description:
We combine previously published data from other telescopes to
complement the time span and quantity of Keck-HIRES observations
obtained by the California Planet Survey (Howard et al.
2010ApJ...721.1467H 2010ApJ...721.1467H; Johnson et al. 2010PASP..122..149J 2010PASP..122..149J; Wright et al.
2011ApJ...730...93W 2011ApJ...730...93W) for many purposes, including as part of the
η⊕ survey (Howard et al. 2009ApJ...696...75H 2009ApJ...696...75H,
2010, J/other/Sci/330.653, 2011ApJ...726...73H 2011ApJ...726...73H, 2011ApJ...730...10H 2011ApJ...730...10H).
We make use of literature data from ELODIE, SOPHIE, CORALIE, HARPS,
HRS, Hamilton spectrographs. See section 2.1
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 131 8 List of stellar parameters
table3.dat 135 13 List of Keplerian orbital parameters
table4.dat 46 999 Radial velocities measured for the 8 stars of table2
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See also:
I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)
III/185 : Search for Jupiter-Mass Companions (Walker+, 1995)
J/A+A/576/A48 : 5 HARPS long-period giant planets RV (Moutou+, 2015)
J/ApJS/210/19 : Kepler planetary candidates. IV. 22 months (Burke+, 2014)
J/ApJS/210/5 : The twenty-five year Lick planet search (Fischer+, 2014)
J/A+A/549/A109 : HARPS XXXI. The M-dwarf sample (Bonfils+, 2013)
J/ApJ/761/46 : HD 37605 radial velocities and photometry (Wang+, 2012)
J/A+A/545/A55 : Exoplanets. Radial velocities of 5 stars (Boisse+, 2012)
J/A+A/541/A9 : M dwarfs activity and radial velocity (Gomes da Silva+, 2012)
J/ApJ/748/93 : K-band spectra for 133 nearby M dwarfs (Rojas-Ayala+, 2012)
J/A+A/535/A55 : 4 stars with long-period planets (Dumusque+, 2011)
J/ApJ/727/117 : RVs of four exoplanet candidates (Meschiari+, 2011)
J/ApJ/725/875 : Chromospheric activity for CPS stars (Isaacson+, 2010)
J/other/Sci/330.653 : Detected planets in the Eta-Earth Survey (Howard+, 2010)
J/other/A+ARV/18.67 : Accurate masses and radii of normal stars (Torres+, 2010)
J/A+A/511/A54 : Magnetic cycles & radial-velocity for 8 stars (Santos+, 2010)
J/A+A/496/513 : RV of 6 stars with long-period giant planets (Moutou+, 2009)
J/ApJS/182/97 : Radial velocities of multi-planet systems (Wittenmyer+, 2009)
J/ApJ/693/1084 : Ten new and updated multiplanet systems (Wright+, 2009)
J/ApJS/168/297 : Stellar parameters of nearby cool stars (Takeda+, 2007)
J/ApJ/654/625 : Radial velocities of 9 long-period objects (Wittenmyer+, 2007)
J/ApJ/646/505 : Catalog of nearby exoplanets (Butler+, 2006)
J/ApJS/159/141 : Spectroscopic properties of cool stars. I. (Valenti+, 2005)
J/ApJS/152/261 : Chromospheric Ca II emission in nearby stars (Wright+, 2004)
J/A+A/414/351 : ELODIE survey for northern exoplanets III (Naef+, 2004)
J/A+A/379/999 : The CORALIE survey for extrasolar planets. VI (Santos+ 2001)
J/A+A/375/205 : The CORALIE survey for extrasolar planets V (Naef+ 2001)
http://exoplanetarchive.ipac.caltech.edu/ : NASA exoplanet archive
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Star name
11- 12 I2 h RAh SIMBAD hour of right ascension (J2000)
14- 15 I2 min RAm Minute of right ascension (J2000)
17- 20 F4.1 s RAs Second of right ascension (J2000)
22 A1 --- DE- SIMBAD sign of declination (J2000)
23- 24 I2 deg DEd SIMBAD degree of declination (J2000)
26- 27 I2 arcmin DEm Arcminute of declination (J2000)
29- 32 F4.1 arcsec DEs Arcsecond of declination (J2000)
34- 38 A5 --- SpT SIMBAD MK spectral type
40- 43 F4.1 mag Vmag [6.2/10.4] SIMBAD V-band magnitude
45- 48 F4.2 mag B-V [0.5/1.5] SIMBAD B-V color index
50- 54 F5.2 pc Dist [9/65]? Distance from HIP (van Leeuwen 2007,
Cat. I/311)
56- 59 F4.1 pc e_Dist [1.2/17]? Dist uncertainty
61- 64 I4 K Teff [3601/6068]? Effective temperature (1)
66- 67 I2 K e_Teff [19/44]? Teff uncertainty
69 A1 --- r_Teff [a] Flag for GJ 849 (2)
71- 75 F5.3 [cm/s2] logg [3.2/4.6]? Log of surface gravity (1)
77- 81 F5.3 [cm/s2] e_logg [0.06]? logg uncertainty
83- 87 F5.3 [Sun] [Fe/H] [0.1/0.4]? Metallicity (1)
89- 93 F5.3 [Sun] e_[Fe/H] [0.03/0.2]? [Fe/H] uncertainty
95 A1 --- r_[Fe/H] [a] a: Flag for GJ 849 (2)
97-100 F4.2 km/s vsini [0/4.4]? Rotational velocity (1)
102-105 F4.2 km/s e_vsini [0.5]? vsini uncertainty
107-111 F5.3 Msun M* [0.4/1.8] Mass from Takeda et al. (2007,
J/ApJS/168/297)
113-117 F5.3 Msun e_M* [0.02/0.2] M* uncertainty
119 A1 --- r_M* [a] a: Flag for GJ 849 (2)
121-125 F5.3 Rsun R* [0.9/5.4]? Radius (3)
127-131 F5.3 Rsun e_R* [0.03/0.5]? R* uncertainty
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Note (1): from Valenti & Fischer (2005, J/ApJS/159/141).
Note (2):
a = For GJ 849, Teff is from Rojas-Ayala et al. (2012, J/ApJ/748/93),
[Fe/H] is from Terrien et al. (2012ApJ...747L..38T 2012ApJ...747L..38T), while M* is from
Montet et al. (2014ApJ...781...28M 2014ApJ...781...28M).
Note (3): We calculated the stellar radii based on Torres et al. (2010,
J/other/A+ARV/18.67).
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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- 9 A9 --- Name Star name
11 A1 --- m_Name [bc] Planet identifier
13 A1 --- n_Name Remark about the orbits (1)
15- 26 F12.7 d Per Orbital period
28- 38 F11.7 d e_Per Per uncertainty
40 A1 --- f_Per [d] Estimated uncertainties (1)
42- 50 F9.3 d Tp BJD (BJD-2440000) of periastron
52- 58 F7.3 d e_Tp Tp uncertainty
60- 65 F6.4 --- e [0/0.7] Orbital eccentricity
67- 72 F6.4 --- E_e Positive error on e
74- 79 F6.4 --- e_e Negative error on e
81- 86 F6.2 deg Omega [0/360] Angle of periastron ω
88- 93 F6.2 deg e_Omega [0.9/200] Omega uncertainty
95-100 F6.2 m/s K [17/141] Semi-amplitude K
102-105 F4.2 m/s e_K [0.3/3] K uncertainty
107-112 F6.4 Mjup Msini [0.5/8] Planet mass (in Jupiter)
114-119 F6.4 Mjup e_Msini [0.002/0.3] Msini uncertainty
121-127 F7.5 AU a [0.04/6.1] semi-major axis
129-135 F7.5 AU e_a [0.0003/0.3] a uncertainty
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Note (1): Flag as follows:
a = The fit includes a linear trend of 1.8±0.4m/s/yr.
b = The fit includes a linear trend of -3.4±0.2m/s/yr.
c = Except where noted, these parameter uncertainties were computed using
only the stable bootstrapping realizations.
d = This parameter uncertainty was computed using the χ2 map.
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Star name
11- 21 F11.5 --- BJD Barycentric Julian date (BJD-2440000)
23- 29 F7.2 m/s RVel [-553/3961] Radial Velocity
31- 35 F5.2 m/s e_RVel [0.6/25] The 1σ uncertainty in RVel
37- 44 A8 --- Tel Instrument used (1)
46 I1 --- f_Tel [1]? 1 = HIRES (post-upgrade) observation
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Note (1): Instruments are:
HIRES = High Resolution Echelle Spectrometer at Keck
CORALIE = echelle spectrograph at ESO/La Silla (Swiss 1.2m telescope)
ELODIE = echelle spectrograph at Observatoire de Haute Provence (1.93m)
HRS = High Resolution Spectrograph McDonald Observatory (2.7m)
HAMILTON = spectrograph at Lick Observatory (3m)
HARPS = High Accuracy Radial velocity Planet Searcher at ESO/La Silla (3.6m)
SOPHIE = echelle spectrograph at Observatoire de Haute Provence (1.93m)
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 29-Jun-2015