J/AJ/164/188 1998-2015 UCLES radial velocity for Gliese 86 (Zeng+, 2022)
The Gliese 86 Binary System; A Warm Jupiter Formed in a Disk Truncated at ∼2au.
Zeng Y., Brandt T.D., Li G., Dupuy T.J., Li Y., Brandt G.M., Farihi J.,
Horner J., Wittenmyer R.A., Butler R.P., Tinney C.G., Carter B.D.,
Wright D.J., Jones H.R.A., O'Toole S.J.
<Astron. J., 164, 188 (2022)>
=2022AJ....164..188Z 2022AJ....164..188Z
ADC_Keywords: Exoplanets; Stars, K-type; Spectra, optical; Radial velocities
Keywords: Protoplanetary disks ; Planetary system formation ; Planet
formation ; Stellar evolution ; Close binary stars
Abstract:
Gliese86 is a nearby K-dwarf hosting a giant planet on a ∼16day orbit
and an outer white dwarf companion on a ∼century-long orbit. In this
study we combine radial velocity data (including new measurements
spanning more than a decade) with high angular resolution imaging and
absolute astrometry from Hipparcos and Gaia to measure the current
orbits and masses of both companions. We then simulate the evolution
of the Gl86 system to constrain its primordial orbit when both stars
were on the main sequence; the closest approach between the two stars
was then about 9au. Such a close separation limited the size of the
protoplanetary disk of Gl86A and dynamically hindered the formation of
the giant planet around it. Our measurements of Gl86B and Gl86Ab's
orbits reveal Gl86 as a system in which giant planet formation took
place in a disk truncated at ∼2au. Such a disk would be just big
enough to harbor the dust mass and total mass needed to assemble
Gl86Ab's core and envelope, assuming a high disk accretion rate and a
low viscosity. Inefficient accretion of the disk onto Gl86Ab, however,
would require a disk massive enough to approach the Toomre stability
limit at its outer truncation radius. The orbital architecture of the
Gl86 system shows that giant planets can form even in severely
truncated disks and provides an important benchmark for planet
formation theory.
Description:
The radial velocity (RV) data come from the UCLES echelle spectrograph
on the Anglo-Australian Telescope. Those results spanning 1998-2005
were published in Butler+, 2006, J/ApJ/646/505. We also include a
further 34 previously unpublished UCLES RVs spanning 2006-2015, for a
total time baseline of 17.8yr.
Objects:
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RA (2000) DE Designation(s) (Period)
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02 10 25.91 -50 49 25.4 Gliese 86 = TIC 220017951 (P=15.8d)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 26 74 Radial velocity data of Gl 86
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See also:
I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)
J/A+A/420/183 : Spectroscopic survey solar neighborhood (Allende Prieto+ 2004)
J/A+A/415/1153 : [Fe/H] for 98 extra-solar planet-host stars (Santos+, 2004)
J/ApJ/646/505 : Catalog of nearby exoplanets (Butler+, 2006)
J/A+A/465/271 : Oxygen abundances in nearby stars (Ramirez+, 2007)
J/other/Nat/481.475 : Radial velocities Kepler-34b & Kepler-35b (Welsh+, 2012)
J/ApJ/764/78 : Oxygen abundances in nearby FGK stars (Ramirez+, 2013)
J/ApJ/783/4 : Properties Kepler multi-planet candidate systems (Wang+, 2014)
J/AJ/152/8 : Impact of stellar mult. on planetary systems I. (Kraus+, 2016)
J/MNRAS/460/3706 : Radial velocity curves of ν Oct (Ramm+, 2016)
J/AJ/152/167 : Radial velocities of HD 133131A and HD 133131B (Teske+, 2016)
J/AJ/157/174 : Transit planets Kepler-47 circumbinary system (Orosz+, 2019)
J/AJ/159/120 : Transit time of K2-146b & K2-146c with K2 and HPF (Lam+, 2020)
J/ApJS/254/42 : Hipparcos-Gaia (EDR3) Catalog of Accelerations (Brandt, 2021)
J/AJ/161/190 : Radial Velocities of binary population in M67 (Geller+, 2021)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 13 F13.5 d JD [2450831/2457348] Julian date of observation
15- 21 F7.2 m/s RVel [-692/1283] Radial velocity
23- 26 F4.2 m/s e_RVel [0.6/6] Uncertainty of radial velocity
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 29-Nov-2022