J/A+A/624/A118 Fitted orbits and parameters of 51 Eridani b (Maire+, 2019)
Hint of curvature in the orbital motion of the exoplanet 51 Eridani b using 3 yr
of VLT/SPHERE.
Maire A.-L., Rodet L., Cantalloube F., Galicher R., Brandner W.,
Messina S., Lazzoni C., Mesa D., Melnick D., Carson J., Samland M.,
Biller B. A., Boccaletti A., Wahhaj Z., Beust H., Bonnefoy M.,
Chauvin G., Desidera S., Langlois M., Henning T., Janson M., Olofsson J.,
Rouan D., Menard F., Lagrange A.-M., Gratton R., Vigan A., Meyer M. R.,
Cheetham A., Beuzit J.-L., Dohlen K., Avenhaus H., Bonavita M.,
Claudi R., Cudel M., Daemgen S., D'Orazi V., Fontanive C., Hagelberg J.,
Le Coroller H., Perrot C., Rickman E., Schmidt T., Sissa E., Udry S.,
Zurlo A., Abe L., Origne A., Rigal F., Rousset G., Roux A., Weber L.
<Astron. Astrophys. 624, A118 (2019)>
=2019A&A...624A.118M 2019A&A...624A.118M (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Binaries, orbits ; Exoplanets
Keywords: planetary systems - methods: data analysis -
stars: individual: 51 Eridani -
techniques: high angular resolution - planet and satellites: dynamical
Abstract:
51 Eridani observations were performed with the VLT exoplanet imager
SPHERE for 3 years in order to monitor the orbital motion of the known
giant planet and refine its orbital parameters. We carried out an
orbital analysis using three complementary approaches (LSMC, MCMC,
Bayesian rejection sampling) and found broadly similar results. The
data suggest a period of 23-49yr (i.e. semi-major axis of 10-16au), an
inclination of 126-147°, an eccentricity of 0.30-0.55, and an
argument at periastron of 57-121° (mod 180°). The time at
periastron and the longitude of node exhibit bimodal distributions.
Description:
The fitted orbits and the histogram distributions of the orbital
parameters derived for each of the three fitting approaches are
provided.
Objects:
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RA (2000) DE Designation(s)
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04 37 36.13 -02 28 24.8 c Eri = ** 51 Eri
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 51 6 List of fits files
fits/* . 6 Individual fits files
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ncol Number of columns (1)
4- 9 I6 --- Nrow Number of rows (1)
11- 15 I5 Mbyte size Size of FITS file
17- 32 A16 --- FileName Name of FITS file, in subdirectory fits
34- 51 A18 --- Title Title of FITS file
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Note (1): NaN values should be removed before using the posterior data
for the LSMC and OFTI files.
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Acknowledgements:
Anne-Lise Maire, almaire(at)uliege.be
(End) Patricia Vannier [CDS] 26-Mar-2019