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J/ApJ/785/126        HIRES radial velocity measurements         (Knutson+, 2014)

Friends of hot Jupiters. I. A radial velocity search for massive, long-period companions to close-in gas giant planets. Knutson H.A., Fulton B.J., Montet B.T., Kao M., Ngo H., Howard A.W., Crepp J.R., Hinkley S., Bakos G.A., Batygin K., Johnson J.A., Morton T.D., Muirhead P.S. <Astrophys. J., 785, 126 (2014)> =2014ApJ...785..126K (SIMBAD/NED BibCode)
ADC_Keywords: Planets ; Radial velocities ; Stars, double and multiple Stars, masses ; Abundances, [Fe/H] Keywords: binaries: eclipsing - instrumentation: adaptive optics - planetary systems - techniques: radial velocities Abstract: In this paper we search for distant massive companions to known transiting gas giant planets that may have influenced the dynamical evolution of these systems. We present new radial velocity observations for a sample of 51 planets obtained using the Keck HIRES instrument, and find statistically significant accelerations in fifteen systems. Six of these systems have no previously reported accelerations in the published literature: HAT-P-10, HAT-P-22, HAT-P-29, HAT-P-32, WASP-10, and XO-2. We combine our radial velocity fits with Keck NIRC2 adaptive optics (AO) imaging data to place constraints on the allowed masses and orbital periods of the companions responsible for the detected accelerations. The estimated masses of the companions range between 1-500 MJup, with orbital semi-major axes typically between 1-75 AU. A significant majority of the companions detected by our survey are constrained to have minimum masses comparable to or larger than those of the transiting planets in these systems, making them candidates for influencing the orbital evolution of the inner gas giant. We estimate a total occurrence rate of 51%±10% for companions with masses between 1-13 MJup and orbital semi-major axes between 1-20 AU in our sample. We find no statistically significant difference between the frequency of companions to transiting planets with misaligned or eccentric orbits and those with well-aligned, circular orbits. We combine our expanded sample of radial velocity measurements with constraints from transit and secondary eclipse observations to provide improved measurements of the physical and orbital characteristics of all of the planets included in our survey. Description: We observed our target stars using the High Resolution Echelle Spectrometer (HIRES) (Vogt et al. 1994SPIE.2198..362V) on the 10 m Keck I telescope over a period of two years beginning in 2011; many of our targets also had existing HIRES observations taken prior to 2011 by other programs. We used the standard HIRES setup and reduction pipeline employed by the California Planet Search (CPS) consortium (Wright et al. 2004, J/ApJS/152/261; Howard et al. 2009ApJ...696...75H; Johnson et al. 2010PASP..122..149J). Observations were typically obtained with a slit width of 0.86" with integration times optimized to obtain typical signal to noise ratios of 70 per pixel. An iodine cell mounted in front of the spectrometer entrance slit provided a wavelength scale and instrumental profile for the observations (Marcy & Butler, 1992PASP..104..270M; Valenti et al. 1995PASP..107..966V). We obtained a total of approximately 270 new radial velocity measurements for our target sample, with a minimum of four observations per target separated by at least six months. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 91 51 Stellar Parameters table3.dat 41 1054 HIRES Radial Velocity Measurements refs.dat 63 44 References
See also: III/185 : Search for Jupiter-Mass Companions (Walker+, 1995) III/211 : Keck/HIRES Sky Line Atlas (Osterbrock+ 1997) J/ApJS/152/261 : Chromospheric Ca II emission in nearby stars (Wright+, 2004) J/MNRAS/426/739 : Velocities for seven transiting hot Jupiters (Hellier+, 2012) J/A+A/563/A22 : Radial velocities of 3 new hot Jupiters (Moutou+, 2014) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 8 A8 --- Name Star name 11- 15 F5.3 Msun Mass Mass 17- 21 F5.3 Msun e_Mass Error in Mass 23- 27 F5.2 [-] [Fe/H] Metallicity 29- 32 F4.2 [-] e_[Fe/H] Error in [Fe/H] 34- 43 A10 --- Sample Sample identification (1) 45- 91 A47 --- Ref Reference(s) (listed in refs.dat file)
Note (1): The misaligned sample consists of planets with either eccentric or misaligned orbits, while the control sample contains planets that appear to have circular and/or well-aligned orbits.
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 15 F15.7 d BJD Barycentric Julian Date; TDB 17- 25 F9.3 m/s RV Radial velocity 27- 32 F6.3 m/s e_RV Error in RV 34- 41 A8 --- Name Star name
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 25 A25 --- Ref Reference 29- 47 A19 --- Bibcode Reference bibcode 49- 63 A15 --- Com Comment on reference
History: From electronic version of the journal References: Ngo et al. Paper II 2015ApJ...800..138N Piskorz et al. Paper III 2015ApJ...814..148P Ngo et al. Paper IV 2016ApJ...827....8N
(End) Prepared by [AAS], Tiphaine Pouvreau [CDS] 13-Jun-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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