J/A+A/624/A18 nu Oph radial velocity curve (Quirrenbach+, 2019)
Precise radial velocities of giant stars.
XI. Two brown dwarfs in 6:1 mean motion resonance around the K giant star
nu Ophiuchi.
Quirrenbach A., Trifonov T., Lee M.H., Reffert S.
<Astron. Astrophys. 624, A18 (2019)>
=2019A&A...624A..18Q 2019A&A...624A..18Q (SIMBAD/NED BibCode)
ADC_Keywords: Stars, giant ; Radial velocities
Keywords: techniques: radial velocities - planets and satellites: detection -
planets and satellites: dynamical evolution and stability -
brown dwarfs - planetary systems
Abstract:
We present radial-velocity (RV) measurements for the K giant nu Oph
(=HIP 88048, HD 163917, HR 6698), which reveal two brown dwarf
companions with a period ratio close to 6:1. For our orbital analysis
we use 150 precise RV measurements taken at the Lick Observatory
between 2000 and 2011, and we combine them with RV data for this star
available in the literature. Using a stellar mass of M=2.7M☉ for
nu Oph and applying a self-consistent N-body model we estimate the
minimum dynamical companion masses to be m1sini∼22.2MJup and
m2sini∼24.7MJup, with orbital periods P1∼530d and P2∼3185d.
Description:
The radial velocities of nu Oph measured at Lick Observatory are
presented. Their zero point is arbitrary.
Objects:
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RA (2000) DE Designation(s)
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17 59 01.59 -09 46 25.1 nu Oph = HR 6698
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 22 150 Radial velocities and errors
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See also:
J/A+A/475/1003 : Stellar parameters of G and K giant stars (Hekker+, 2007)
J/A+A/574/A116 : G and K giant stars stellar parameters (Reffert+, 2015)
J/A+A/595/A55 : Radial velocity data of HD 59686 A (Ortiz+, 2016)
J/A+A/616/A33 : Stellar parameters of 372 giant stars (Stock+, 2018)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 11 F11.3 d JD Julian Date
13- 18 F6.1 m/s RV Radial velocity
20- 22 F3.1 m/s e_RV Radial velocity error
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Acknowledgements:
Andreas Quirrenbach, A.Quirrenbach(at)lsw.uni-heidelberg.de
References:
Hekker et al., Paper I 2006A&A...454..943H 2006A&A...454..943H
Reffert et al., Paper II 2006ApJ...652..661R 2006ApJ...652..661R
Hekker & Melendez, Paper III 2007A&A...475.1003H 2007A&A...475.1003H, Cat. J/A+A/475/1003
Hekker et al., Paper IV 2008A&A...480..215H 2008A&A...480..215H
Mitchell et al., Paper V 2013A&A...555A..87M 2013A&A...555A..87M
Trifonov et al., Paper VI 2014A&A...568A..64T 2014A&A...568A..64T
Reffert et al., Paper VII 2015A&A...574A.116R 2015A&A...574A.116R, Cat. J/A+A/574/A116
Trifonov et al., Paper VIII 2015A&A...582A..54T 2015A&A...582A..54T
Ortiz et al., Paper IX 2016A&A...595A..55O 2016A&A...595A..55O, Cat. J/A+A/595/A55
Stock et al., Paper X 2018A&A...616A..33S 2018A&A...616A..33S, Cat. J/A+A/616/A33
(End) Patricia Vannier [CDS] 06-Feb-2019