J/ApJ/693/1084 Ten new and updated multiplanet systems (Wright+, 2009)
Ten new and updated multiplanet systems and a survey of exoplanetary systems.
Wright J.T., Upadhyay S., Marcy G.W., Fischer D.A., Ford E.B., Johnson J.A.
<Astrophys. J., 693, 1084-1099 (2009)>
=2009ApJ...693.1084W 2009ApJ...693.1084W
ADC_Keywords: Stars, double and multiple ; Planets ; Radial velocities
Keywords: planetary systems
Abstract:
We present the latest velocities for ten multiplanet systems,
including a re-analysis of archival Keck and Lick data, resulting in
improved velocities that supersede our previously published
measurements. We derive updated orbital fits for 10 Lick and Keck
systems, including two systems (HD 11964, HD 183263) for which we
provide confirmation of second planets only tentatively identified
elsewhere, and two others (HD 187123 and HD 217107) for which we
provide a major revision of the outer planet's orbit. We compile
orbital elements from the literature to generate a catalog of the 28
published multiple-planet systems around stars within 200pc.
Description:
We consider here the 28 known multiple-planet systems among the 205
known, normal exoplanet host stars within 200pc. This is the sample
of the Catalog of Nearby Exoplanets (CNE, Butler et al. 2006, Cat.
J/ApJ/646/505). We provide up-to-date fits with radial velocities as
recent as 2008 June for those multiplanet systems with no significant
planet-planet interactions (see Section 2.4), and for which we have
Lick and Keck data from our planet search (see Butler et al. 2006,
Cat. J/ApJ/646/505, for details).
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
stars.dat 76 10 Properties of host stars from Butler et al.,
2006, Cat. J/ApJ/646/505
table1.dat 154 68 List of exoplanets in multiplanet systems
table2.dat 42 1283 Updated RV data for multiple planet systems
--------------------------------------------------------------------------------
See also:
J/A+A/493/639 : Velocity curves of HD 40307 (Mayor+, 2009)
J/A+A/491/883 : Radial velocities of HD 60532 (Desort+, 2008)
J/A+A/469/L43 : Radial velocities of Gl 581 (Udry+, 2007)
J/ApJ/646/505 : Catalog of nearby exoplanets (Butler+, 2006)
J/ApJ/634/625 : Radial velocities and photometry of GJ 876 (Rivera+, 2005)
J/A+A/415/391 : The CORALIE survey for extrasolar planets. XII (Mayor+, 2004)
J/A+A/414/351 : ELODIE survey for northern extrasolar planets III (Naef+,
2004)
http://exoplanets.org/ : Exoplanet Data Explorer home page
http://exoplanet.eu/ : Extrasolar Planets Encyclopaedia home page
Byte-by-byte Description of file: stars.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- Star Star name
13- 14 I2 h RAh Hour of Right Ascension (J2000)
16- 17 I2 min RAm Minute of Right Ascension (J2000)
19- 24 F6.3 s RAs Second of Right Ascension (J2000)
26 A1 --- DE- Sign of the Declination (J2000)
27- 28 I2 deg DEd Degree of Declination (J2000)
30- 31 I2 arcmin DEm Arcminute of Declination (J2000)
33- 38 F6.3 arcsec DEs Arcsecond of Declination (J2000)
40- 43 F4.2 mag B-V Hipparcos catalog (B-V) color index
45- 48 F4.2 mag Vmag Hipparcos catalog V band magnitude
50- 54 F5.2 pc Dist Heliocentric distance
56- 59 I4 K Teff Effective temperature
61- 65 F5.3 [cm/s2] log(g) Log of the surface gravity
67- 71 F5.3 [Sun] [Fe/H] The [Fe/H] abundance
73- 76 F4.2 Msun Mass Mass of the host star
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- Star Star system name
13 A1 --- Pl [b-f] Planetary component
15- 27 F13.7 d Per Period
29- 39 F11.7 d e_Per ? Period uncertainty
41- 46 F6.2 m/s K ? Stellar reflex motion semi-amplitude
48- 52 F5.2 m/s e_K ? K uncertainty
54- 59 F6.4 --- e Eccentricity of exoplanet (1)
61- 66 F6.4 --- e_e ? e uncertainty
68- 74 F7.2 deg omega ? Planet's longitude of periastron (1)
76- 81 F6.2 deg e_omega ? ω uncertainty
83- 93 F11.5 d Tp ? Julian date (JD-2440000) of periastron
95-103 F9.5 d e_Tp ? Tp uncertainty
105-111 F7.4 jovMass Msini Minimum mass in Jupiter masses (see text)
113-118 F6.4 jovMass e_Msini ? Msini uncertainty
120-125 F6.4 AU a Semi-major axis of planet orbit
127-132 F6.4 AU e_a ? a uncertainty
134-138 F5.2 m/s rms Fit quality as the rms. of the residuals
140-144 F5.3 --- chi2 ? Square root of the reduced χ2
146-148 I3 --- Nobs ? Number of observations
150 A1 --- Note [c-j] Notes (2)
152-154 A3 --- Ref References (3)
--------------------------------------------------------------------------------
Note (1): When the uncertainty in e is comparable to e, uncertainties
in ω and e become non-Gaussian. See Butler et al. 2006,
Cat. J/ApJ/646/505 for details.
Note (2): Notes as follows:
c = The fit for this system includes a trend of -0.51±0.1m/s/yr.
d = The planets in HD 73526 are in a 2:1 mean motion resonance, and
planet-planet interactions are important, rendering Keplerian elements
inadequate. In addition to the elements reported here, Tinney et al.
(2006ApJ...647..594T 2006ApJ...647..594T) report a mean anomaly to be 86±13° and
82±27° at a Julian Date of 2451212.1302. There is considerable
degeneracy between K and e because the orbital period of HD 73526c
differs from 1 year by only 12d.
e = Barnes et al. (2008ApJ...680L..57B 2008ApJ...680L..57B) found that the orbit presented in
Bean et al. (2008ApJ...672.1202B 2008ApJ...672.1202B) for the d component is unstable, and
provide multiple stable solutions without uncertainties in the orbital
parameters.
f = Planet-planet interactions are strong in 55 Cnc. The osculating orbital
elements here are from the dynamical fit at Julian Date 2447578.730 of
Fischer et al. (2008ApJ...675..790F 2008ApJ...675..790F). That work puts no errors on these
parameters, however, so the errors quoted here are those from the
Keplerian (kinematic) fit there.
g = The exoplanets in HD 82946 have significant interactions, which render
Keplerian orbital elements inadequate for describing their orbits, since
these elements are time variable. Lee et al. (2006ApJ...641.1178L 2006ApJ...641.1178L) report
the mean anomaly of the inner and outer planets to be 353° and
207°, respectively, at a Julian Date of 2451185.1.
h = This solution includes a linear trend with magnitude -3.08±0.16m/s/yr.
i = The exoplanets in HD 202206 have significant interactions, which renders
Keplerian orbital elements inadequate for describing their orbits, since
these elements are time variable. Correia et al. (2005A&A...440..751C 2005A&A...440..751C)
report the mean longitude to be 266.23±0.06° and 30.59±2.84°
for the inner and outer planets, respectively, at a Julian Date of
2452250.
j = The outer two exoplanets GJ 876 have significant interactions, which
renders Keplerian orbital elements inadequate for describing their
orbits, since these elements are time variable. Rivera et al. (2005,
Cat. J/ApJ/634/625) report the mean anomaly of the planets to be
Md=309.5±5.1°, Mc=308.5±1.4°, and Mb=175.5±6.0°,
respectively, at a Julian Date of 2452490. The solution quoted here
assumes i=90°.
Note (3): References indicate which orbital parameters are taken from the
literature as follows:
Be8 = Bean et al. (2008ApJ...672.1202B 2008ApJ...672.1202B);
Bu6 = Butler et al. (2006, Cat. J/ApJ/646/505);
Cc7 = Cochran et al. (2007ApJ...665.1407C 2007ApJ...665.1407C);
Cr5 = Correia et al. (2005A&A...440..751C 2005A&A...440..751C);
Ds8 = Desort et al. (2008, Cat. J/A+A/491/883);
Fi2 = Fischer et al. (2002PASP..114..529F 2002PASP..114..529F);
Fi8 = Fischer et al. (2008ApJ...675..790F 2008ApJ...675..790F);
Le6 = Lee et al. (2006ApJ...641.1178L 2006ApJ...641.1178L);
Lv6 = Lovis et al. (2006Natur.441..305L 2006Natur.441..305L);
My4 = Mayor et al. (2004, Cat. J/A+A/415/391);
My8 = Mayor et al. (2009, Cat. J/A+A/493/639);
Ni8 = Niedzielski et al. (2009ApJ...693..276N 2009ApJ...693..276N);
Nf4 = Naef et al. (2004, Cat. J/A+A/414/351);
Pp7 = Pepe et al. (2007A&A...462..769P 2007A&A...462..769P);
R5 = Rivera et al. (2005, Cat. J/ApJ/634/625);
T6 = Tinney et al. (2006ApJ...647..594T 2006ApJ...647..594T);
U7 = Udry et al. (2007, Cat. J/A+A/469/L43);
Vo5 = Vogt et al.(2005ApJ...632..638V 2005ApJ...632..638V);
Wr7 = Wright et al. (2007ApJ...657..533W 2007ApJ...657..533W).
All other orbital solutions are new Keplerian (kinematic) fits to the
data in Table 2.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- Star Star name
13- 26 F14.6 d JD Julian Date of observation
28- 34 F7.2 m/s RV Radial Velocity
36- 40 F5.2 m/s e_RV Uncertainty in RV
42 A1 --- Tel Telescope code (L for Lick or K for Keck
Observatory)
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 14-Mar-2011