J/ApJ/727/102 On the frequency of Jupiter analogs (Wittenmyer+, 2011)
On the frequency of Jupiter analogs.
Wittenmyer R.A., Tinney C.G., O'Toole S.J., Jones H.R.A., Butler R.P.,
Carter B.D., Bailey J.
<Astrophys. J., 727, 102 (2011)>
=2011ApJ...727..102W 2011ApJ...727..102W
ADC_Keywords: Planets ; Stars, double and multiple
Keywords: planetary systems - techniques: radial velocities
Abstract:
The Anglo-Australian Planet Search has now accumulated 12 years of
radial-velocity data with long-term instrumental precision better than
3m/s. In this paper, we expand on earlier simulation work, to probe
the frequency of near-circular, long-period gas-giant planets residing
at orbital distances of 3-6AU -the so-called Jupiter analogs. We
present the first comprehensive analysis of the frequency of these
objects based on radial-velocity data. We find that 3.3% of stars in
our sample host Jupiter analogs; detailed, star-by-star simulations
show that no more than 37% of stars host a giant planet between 3 and
6AU.
Description:
The Anglo-Australian Planet Search (AAPS) target list contains 254
stars, of which 180 have been observed for more than 8 years. We
further restrict the sample to those stars which have been observed
more than 30 times (N=123) which are summarized in table 1. Of the 123
AAPS program targets, 25 are known to host at least one planet (plus
one brown dwarf host: HD 164427). The planetary parameters are listed
in Table 3.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 22 123 Summary of radial-velocity data
table2.dat 46 492 *Summary of detection limits
table3.dat 151 27 Substellar companions from this sample
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Notes on table2.dat: The detection limits were computed using the method
of Wittenmyer et al. (2006AJ....132..177W 2006AJ....132..177W). See section 3.1 for explanations.
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See also:
III/185 : Search for Jupiter-Mass Companions (Walker+, 1995)
J/A+A/535/A55 : 4 stars with long-period planets (Dumusque+, 2011)
J/A+A/534/A58 : HD20794, HD85512, HD192310 HARPS RVs (Pepe+, 2011)
J/A+A/528/A112 : Radial velocities of HD 10180 (Lovis+, 2011)
J/ApJ/708/1366 : Radial velocities for 61 Vir (Vogt+, 2010)
J/A+A/523/A88 : A Jupiter-mass companion around HD 109246 (Boisse+, 2010)
J/ApJS/182/97 : Radial velocities of multi-planet systems (Wittenmyer+, 2009)
J/A+A/496/513 : RV of 6 stars with long-period giant planets (Moutou+, 2009)
J/A+A/415/391 : The CORALIE survey for extrasolar planets. XII (Mayor+, 2004)
J/A+A/388/632 : Radial-velocity of HD 108147 and HD 168746 (Pepe+, 2002)
J/A+A/379/999 : The CORALIE survey for extrasolar planets. VI (Santos+ 2001)
J/A+A/356/590 : The CORALIE survey for extrasolar planets II (Udry+, 2000)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [HD]
4- 10 A7 --- HD Star name
12- 14 I3 --- N Number of observations
16- 19 F4.1 m/s rms RMS velocity
20- 22 A3 --- f_rms [abc, ] type of rms (1)
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Note (1): Flag as follows:
a = Residuals after removal of known planet(s) orbit.
b = Residuals to a linear fit.
c = Residuals to a quadratic fit.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [HD]
4- 10 A7 --- HD Star name
12- 13 I2 % RRate Recovery rate
15- 19 F5.1 m/s e0.0 Mean K velocity amplitude detectable at e=0.0
21- 24 F4.1 m/s e_e0.0 Uncertainty in e0.0
26- 30 F5.1 m/s e0.1 Mean K velocity amplitude detectable at e=0.1
32- 35 F4.1 m/s e_e0.1 Uncertainty in e0.1
37- 41 F5.1 m/s e0.2 Mean K velocity amplitude detectable at e=0.2
43- 46 F4.1 m/s e_e0.2 Uncertainty in e0.2
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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- 11 A11 --- Name Planet designation
13 A1 --- n_Name [J] J: Jupiter analog ((P≳8yr and e<0.2)
15- 24 F10.5 d Per Period (P)
26- 35 F10.6 d e_Per Per uncertainty
37- 43 F7.1 d T0 Periastron passage T0 (JD-2400000)
45- 51 F7.3 d e_T0 T0 uncertainty
53- 57 F5.3 --- e Eccentricity (e)
59- 63 F5.3 --- e_e Eccentricity uncertainty
65- 69 F5.1 deg omega Periastron argument ω
71- 75 F5.1 deg e_omega ? omega uncertainty
77- 82 F6.1 m/s K The velocity amplitude K
84- 88 F5.2 m/s e_K K uncertainty
90- 95 F6.3 Mjup Msini Minimum mass of the planet
97-101 F5.3 Mjup e_Msini Msini uncertainty
103-108 F6.4 AU a Semimajor axis
110-115 F6.4 AU e_a ? a uncertainty
117-131 A15 --- Aut Discovery author's name
133-151 A19 --- BibCode Discovery reference
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 29-Aug-2012