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orvara: Orbits from Radial Velocity, Absolute, and/or Relative Astrometry

Posted: Mon May 31, 2021 12:51 am
by Ada Coda
orvara: Orbits from Radial Velocity, Absolute, and/or Relative Astrometry

Abstract: orvara (Orbits from Radial Velocity, Absolute, and/or Relative Astrometry) fits orbits of bright stars and their faint companions (exoplanets, brown dwarfs, white dwarfs, and low-mass stars). It can use any combination of radial velocity, relative astrometry, and absolute astrometry data and offers a variety of plots from the orbital fit, such as the radial velocity orbit over an extended time baseline, position angle between two companions, and a density plot of the predicted position at a chosen epoch. orvara can also check convergence of fitted parameters in the HDU1 extension, save the results from the fitted and inferred parameters from the HDU1 extension, and plot the results of a three-body or multiple-body fit.

Credit: Brandt, Timothy D.; Dupuy, Trent J.; Li, Yiting; Brandt, G. Mirek; Zeng, Yunlin; Michalik, Daniel; Bardalez Gagliuffi, Daniella C.; Raposo-Pulido, Virginia

Site: https://github.com/t-brandt/orvara
https://ui.adsabs.harvard.edu/abs/2021arXiv210511671B

Bibcode: 2021ascl.soft05012B

ID: ascl:2105.012