What is recorded here?
VLT GRAVITY interferometry and CRIRES+ spectroscopy independently indicated that Gliese 229B is a close binary. A joint orbital fit gave a period of 12.134 ± 0.003 days and component masses of 38.1 ± 1.0 and 34.4 ± 1.5 Jupiter masses in the authors’ frequentist analysis.
Source-linked catalogue note. A detailed explanatory guide has not yet been prepared for this entry.
Scientific scope
The orbit is inferred from interferometric closure phases and modeled radial velocities; calibration, spectral templates and covariance handling enter the fit. The alternative Bayesian analysis gives somewhat different values. Component temperatures, luminosities and age use evolutionary models or empirical calibrations rather than being direct measurements. This 2024 result changes the interpretation of older combined-light measurements.
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People and systems
Jerry W. Xuan; A. Mérand; W. Thompson
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English catalogue narrative
Gliese 229B resolved as a close brown-dwarf binary
VLT GRAVITY interferometry and CRIRES+ spectroscopy independently indicated that Gliese 229B is a close binary. A joint orbital fit gave a period of 12.134 ± 0.003 days and component masses of 38.1 ± 1.0 and 34.4 ± 1.5 Jupiter masses in the authors’ frequentist analysis.
Scientific scope
The orbit is inferred from interferometric closure phases and modeled radial velocities; calibration, spectral templates and covariance handling enter the fit. The alternative Bayesian analysis gives somewhat different values. Component temperatures, luminosities and age use evolutionary models or empirical calibrations rather than being direct measurements. This 2024 result changes the interpretation of older combined-light measurements.
Reading status
This is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.
People and systems
Jerry W. Xuan; A. Mérand; W. Thompson
These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.