J/ApJS/182/97 Radial velocities of multi-planet systems (Wittenmyer+, 2009)
A search for multi-planet systems using the Hobby-Eberly telescope.
Wittenmyer R.A., Endl M., Cochran W.D., Levison H.F., Henry G.W.
<Astrophys. J. Suppl. Ser., 182, 97-119 (2009)>
=2009ApJS..182...97W 2009ApJS..182...97W
ADC_Keywords: Radial velocities ; Spectroscopy ; Planets
Keywords: methods: N-body simulations - planetary systems
techniques: radial velocities
Abstract:
Extrasolar multiple-planet systems provide valuable opportunities for
testing theories of planet formation and evolution. The architectures
of the known multiple-planet systems demonstrate a fascinating level
of diversity, which motivates the search for additional examples of
such systems in order to better constrain their formation and
dynamical histories. Here we describe a comprehensive investigation of
22 planetary systems in an effort to answer three questions: (1) are
there additional planets? (2) where could additional planets reside in
stable orbits? and (3) what limits can these observations place on
such objects? We find no evidence for additional bodies in any of
these systems; indeed, these new data do not support three previously
announced planets (HD 20367 b: Udry et al., 2003ASPCC..294...17U;
HD 74156 d: Bean et al., 2008ApJ...672.1202B 2008ApJ...672.1202B; and 47 UMa c: Fischer et
al., 2002ApJ...564.1028F 2002ApJ...564.1028F). The dynamical simulations show that nearly
all of the 22 systems have large regions in which additional planets
could exist in stable orbits. The detection-limit computations
indicate that this study is sensitive to close-in Neptune-mass planets
for most of the systems targeted. We conclude with a discussion on the
implications of these nondetections.
Description:
22 targets were chosen for this project from the list of ∼150 planet
hosts known in 2004 September. A majority of the observational data
were obtained at McDonald Observatory with the 9.2m Hobby-Eberly
Telescope (HET) using its High Resolution Spectrograph from 2004
December through 2007 November. During the three years of this study,
supplemental observations were also made using the 2.7m Harlan J.
Smith telescope at McDonald Observatory.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
stars.dat 54 22 Simbad targets
table10.dat 41 1337 McDonald observatory radial velocities
--------------------------------------------------------------------------------
See also:
J/A+A/506/303 : CoRoT-7 radial velocities (Queloz+, 2009)
J/A+A/498/L5 : Photometry and spectroscopy of HD 80606b (Moutou+, 2009)
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: stars.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- Name Source identification
12- 13 I2 h RAh Simbad Hour of Right Ascension (J2000.0)
15- 16 I2 min RAm Simbad Minute of Right Ascension (J2000.0)
18- 21 F4.1 s RAs Simbad Second of Right Ascension (J2000.0)
23 A1 --- DE- Simbad Sign of the Declination (J2000.0)
24- 25 I2 deg DEd Simbad Degree of Declination (J2000.0)
27- 28 I2 arcmin DEm Simbad Arcminute of Declination (J2000.0)
30- 31 I2 arcsec DEs Simbad Arcsecond of Declination (J2000.0)
35- 39 F5.3 mag Bmag Simbad B band magnitude
41- 45 F5.3 mag Vmag Simbad V band magnitude
47- 54 A8 --- SpType Simbad MK spectral type
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table10.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- Name Source identification
12- 24 F13.5 d JD Julian Date
26- 31 F6.1 m/s RV Radial velocity
33- 36 F4.1 m/s e_RV Uncertainty in RV
38- 41 A4 --- Tel Telescope
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 24-Nov-2009