J/AJ/163/273 Radial velocity of HD 83443 (Errico+, 2022)
HD 83443c; A Highly Eccentric Giant Planet on a 22yr Orbit.
Errico A., Wittenmyer R.A., Horner J., Li Z., Brandt G.M., Kane S.R.,
Fetherolf T., Holt T.R., Carter B., Clark J.T., Butler R.P., Tinney C.G.,
Ballard S., Bowler B.P., Kielkopf J., Liu H., Plavchan P.P., Shporer A.,
Zhang H., Wright D.J., Addison B.C., Mengel M.W., Okumura J.
<Astron. J., 163, 273 (2022)>
=2022AJ....163..273E 2022AJ....163..273E
ADC_Keywords: Exoplanets; Stars, K-type; Spectra, optical; Radial velocities
Keywords: Planet hosting stars ; Radial velocity ; Exoplanet astronomy ;
Exoplanet dynamics ; Subgiant stars ; Astrometry
Abstract:
We report the discovery of a highly eccentric long-period Jovian
planet orbiting the hot-Jupiter host HD83443. By combining radial
velocity data from four instruments (AAT/UCLES, Keck/HIRES, HARPS,
Minerva-Australis) spanning more than two decades, we find evidence
for a planet with msini=1.35-0.06+0.07MJ, moving on an orbit
with a=8.0±0.8au and eccentricity e=0.76±0.05. We combine our
radial velocity analysis with Gaia EDR3/Hipparcos proper motion
anomalies and derive a dynamical mass of 1.5-0.2+0.5MJ. We
perform a detailed dynamical simulation that reveals locations of
stability within the system that may harbor additional planets,
including stable regions within the habitable zone of the host star.
HD83443 is a rare example of a system hosting a hot Jupiter and an
exterior planetary companion. The high eccentricity of HD83443c
suggests that a scattering event may have sent the hot Jupiter to its
close orbit while leaving the outer planet on a wide and eccentric
path.
Description:
The Anglo-Australian Planet Search (AAPS) survey started in 1998. The
survey was carried out using the 3.9m Anglo-Australian Telescope (AAT)
and the University College London Echelle Spectrograph (UCLES) with a
limiting Doppler precision of 3m/s. AAPS obtained 25 observations of
HD83443 between UT 1999 February 2 and UT 2015 March 13.
High Accuracy Radial velocity Planet Searcher (HARPS) is a highly
stabilized spectrometer that began operations in 2003. The HARPS fiber
feed was upgraded in 2015; here we use 45 observations taken prior to
this correction, from UT 2003 December 28 to 2015 May 1, and 11
observations that were obtained afterward, from 2015 December 10 to
2016 May 28.
From HIgh-REsolution Spectrograph (Keck/HIRES) Radial Velocity Survey
database, we obtain 45 observations of HD83443, taken between UT 2000
December 19 and 2014 December 11.
Minerva-Australis consists of an array of four independently operated
0.7m Planewave CDK700 telescopes situated at the Mount Kent
Observatory in Queensland, Australia. Each telescope simultaneously
feeds stellar light via fiber optic cables to a single KiwiSpec R4-100
high-resolution (R=80000) spectrograph with wavelength coverage from
480 to 620nm. A total of 22 individual spectra for HD83443 were
obtained between 2019 February 8 and 2021 February 22 using
Minerva-Australis telescope 4.
Objects:
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RA (2000) DE Designation(s) (Period)
--------------------------------------------------------------
09 37 11.83 -43 16 19.9 HD 83443 = HD 83443 (Period=8241d)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 56 148 Radial velocities for HD 83443
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See also:
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)
J/A+A/415/391 : The CORALIE survey for extrasolar planets. XII (Mayor+, 2004)
J/A+A/415/1153 : [Fe/H] for 98 extra-solar planet-host stars (Santos+, 2004)
J/ApJ/622/1102 : The planet-metallicity correlation. (Fischer+, 2005)
J/ApJS/159/141 : Spectroscopic properties of cool stars. I. (Valenti+, 2005)
J/ApJ/654/625 : Radial velocities of 9 long-period objects (Wittenmyer+, 2007)
J/A+A/487/373 : Spectroscopic parameters of 451 HARPS-GTO stars (Sousa+, 2008)
J/ApJ/703/L99 : Outlandish orbit of HAT-P-7b (Winn+, 2009)
J/ApJS/182/97 : Radial velocities of multi-planet systems (Wittenmyer+, 2009)
J/ApJ/720/1290 : Abundances of stars hosting planets (Ghezzi+, 2010)
J/A+A/552/A78 : Solar like stars radial velocities (Zechmeister+, 2013)
J/ApJ/785/126 : HIRES radial velocity measurements (Knutson+, 2014)
J/ApJ/821/89 : 12yrs of rvel obs. of exoplanet systems (Bryan+, 2016)
J/ApJ/817/104 : Keck/HIRES radial velocity obs. of HD32963 (Rowan+, 2016)
J/A+A/602/A107 : 231 transiting planets eccentricity and mass (Bonomo+, 2017)
J/AJ/153/208 : LCES HIRES/Keck rvel Exoplanet Survey (Butler+, 2017)
J/ApJ/834/17 : Mass & radius of planets, moons, low mass stars (Chen+, 2017)
J/AJ/153/136 : Planets & host stars with Gaia parallaxes (Stassun+, 2017)
J/ApJ/860/109 : Keck HIRES obs. 245 subgiants (retired Astars) (Ghezzi+, 2018)
J/AJ/158/181 : Radial velocities & S-index values for HR 5183 (Blunt+, 2019)
J/A+A/624/A78 : Masses and ages of 1059 HARPS-GTO stars (Delgado Mena+, 2019)
J/MNRAS/484/L8 : Correcting HIRES/Keck RVs systematic errors (Tal-Or+, 2019)
J/AJ/159/63 : New AO obs. of exoplanets & brown dwarf comps. (Bowler+, 2020)
J/AJ/159/120 : Transit time of K2-146b & K2-146c with K2 and HPF (Lam+, 2020)
J/A+A/636/A74 : HARPS radial velocity database (Trifonov+, 2020)
J/AJ/160/155 : Light curve segments of 22 host stars with TESS (Wong+, 2020)
J/ApJS/254/42 : Hipparcos-Gaia (EDR3) Catalog of Accelerations (Brandt, 2021)
J/ApJS/254/42 : Hipparcos-Gaia (EDR3) Catalog of Accelerations (Brandt, 2021)
J/A+A/649/A26 : TOI-178 six transiting planets (Leleu+, 2021)
J/AJ/162/127 : Lightcurve phases 2nd year TESS primary mission (Wong+, 2021)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 16 F16.8 d BJD [2451212/2459268] Barycentric Julian Date
18- 27 F10.4 m/s RVel [-77.9/28317] Radial velocity
29- 34 F6.3 m/s e_RVel [0.5/14] Error in RVel
36- 56 A21 --- Inst Instrument used
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 30-Sep-2022