J/AJ/163/198 Radial velocities & activity index for HD107148 (Eberhardt+, 2022)
Dynamical Architecture of the HD107148 Planetary System.
Eberhardt J., Trifonov T., Kurster M., Stock S., Henning T., Wollbold A.,
Reffert S., Lee M.H., Zechmeister M., Rodler F., Zakhozhay O., Heeren P.,
Gandolfi D., Barragan O., Tala Pinto M., Wolthoff V., Sarkis P., Brems S.S.
<Astron. J., 163, 198 (2022)>
=2022AJ....163..198E 2022AJ....163..198E
ADC_Keywords: Exoplanets; Stars, G-type; Spectra, optical; Spectra, infrared;
Radial velocities
Keywords: Exoplanet astronomy ; Exoplanet detection methods ; Exoplanet
dynamics ; Radial velocity ; Exoplanet systems
Abstract:
We present an independent Doppler validation and dynamical orbital
analysis of the two-planet system HD107148, which was recently
announced in Rosenthal et al. Our detailed analyses are based on
literature HIRES data and newly obtained HARPS and CARMENES
radial-velocity (RV) measurements as part of our survey in search for
additional planets around single-planet systems. We perform a
periodogram analysis of the available HIRES and HARPS precise RVs and
stellar activity indicators. We do not find any apparent correlation
between the RV measurements and the stellar activity indicators, thus
linking the two strong periodicities to a moderately compact
multiplanet system. We carry out orbital fitting analysis by testing
various one- and two-planet orbital configurations and studying the
posterior probability distribution of the fitted parameters. Our
results solidify the existence of a Saturn-mass planet (HD107148b,
discovered first) with a period of Pb∼77.2days and a second, eccentric
(ec∼0.4), Neptune-mass exoplanet (HD107148c) with an orbital period of
Pc∼18.3days. Finally, we investigate the two- planet system's
long-term stability and overall orbital dynamics with the posterior
distribution of our preferred orbital configuration. Our N-body
stability simulations show that the system is long-term stable and
exhibits large secular osculations in eccentricity but in no
particular mean motion resonance configuration. The HD107148 system,
consisting of a solar-type main-sequence star with two giant planets
in a rare configuration, features a common proper-motion white dwarf
companion and is therefore a valuable target for understanding the
formation and evolution of planetary systems.
Description:
We obtained a total of 92 high signal-to-noise ratio spectra of
HD107148 with the High Accuracy Radial velocity Planet Searcher
spectrograph (HARPS), mounted at the ESO 3.6m Telescope, La Silla,
Chile. We also found a total of 13 archival HARPS spectra of HD107148
in the official ESO archive.
We obtained 12 high signal-to-noise ratio spectra of HD107148 with the
CARMENES 14 instrument, mounted on the 3.5m telescope in Calar Alto,
Spain. These spectra were acquired on 2017 January 15, 2017 March 1,
and 2017 April 11.
Objects:
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RA (2000) DE Designation(s)
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12 19 13.49 -03 19 11.2 HD 107148 = HD 107148
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 128 104 HARPS doppler measurements and activity index of
HD 107148
tablea2.dat 128 12 CARMENES doppler measurements and activity index of
HD 107148 in visible light
tablea3.dat 128 12 CARMENES doppler measurements and activity index of
HD 107148 in near-infrared
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See also:
I/337 : Gaia DR1 (Gaia Collaboration, 2016)
I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
J/A+A/415/391 : The CORALIE survey for extrasolar planets. XII (Mayor+, 2004)
J/ApJ/646/505 : Catalog of nearby exoplanets (Butler+, 2006)
J/ApJ/709/168 : Eccentric orbits in exoplanets (Anglada-Escude+, 2010)
J/ApJ/719/890 : Keck radial velocities of GJ 876 (Rivera+, 2010)
J/AJ/144/102 : Catalog wide companions to Hipparcos stars (Tokovinin+, 2012)
J/ApJS/208/9 : Intrinsic colors and temperatures of PMS stars (Pecaut+, 2013)
J/ApJS/210/5 : The twenty-five year Lick planet search (Fischer+, 2014)
J/AJ/153/208 : LCES HIRES/Keck Rvel Exoplanet Survey (Butler+, 2017)
J/MNRAS/480/2846 : 95 RV-discovered single-planet systems (Boisvert+, 2018)
J/A+A/618/A115 : HD 147379 radial velocities (Kaminski+, 2018)
J/A+A/612/A49 : 324 CARMENES M dwarfs velocities (Reiners+, 2018)
J/A+A/615/A76 : Spectroscopic parameters of stars (SPECIES). I. (Soto+, 2018)
J/A+A/609/A117 : CARMENES radial velocity curves of 7 M-dwarf (Trifonov+, 2018)
J/MNRAS/484/L8 : Correcting HIRES/Keck RVs systematic errors (Tal-Or+, 2019)
J/A+A/643/A112 : CARMENES VIS RVs of 3 M dwarfs (Stock+, 2020)
J/A+A/636/A74 : HARPS radial velocity database (Trifonov+, 2020)
Byte-by-byte Description of file: tablea[123].dat
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Bytes Format Units Label Explanations
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1- 13 F13.5 d JD Julian date
15- 20 F6.2 m/s RVel Radial velocity
22- 26 F5.2 m/s e_RVel Error on RVel
28- 33 F6.2 m/s CRX Stellar activity indicators chromatic index
35- 39 F5.2 m/s e_CRX Error on CRX
41- 46 F6.2 --- dLW Differential line width (m/s*km/s)
48- 51 F4.2 --- e_dLW Error on dLW
53- 58 F6.4 --- Ha ? Hα index
60- 65 F6.4 --- e_Ha ? Error on Ha
67- 72 F6.4 --- NaD1 ? Sodium doublet index, Na D1
74- 79 F6.4 --- e_NaD1 ? Error on NaD1
81- 86 F6.4 --- NaD2 ? Sodium doublet index, Na D2
88- 93 F6.4 --- e_NaD2 ? Error on NaD2
95- 99 F5.3 km/s FWHM ? Full Width at Half Maximum
101-105 F5.3 km/s e_FWHM ? Error on FWHM
107-111 F5.2 --- Cont ? Contrast
113-116 F4.2 --- e_Cont ? Error on Cont
118-123 F6.2 --- BIS ? Cross-correlation function bisector slope
125-128 F4.2 --- e_BIS ? Negative error on BIS
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History:
From electronic version of the journal
(End) Prepared by Fix Coralie [CDS], 10-Oct-2022