GravSphere2 extends Jeans modeling to fourth order with LOS and PM data plus flexible anisotropy forms to recover mass density, anisotropy, and density slope in spherical stellar systems while breaking the mass-anisotropy degeneracy.
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The binary 2M0508-21 has an eccentric orbit (e=0.71, P=2.19 yr) and total dynamical mass 0.459±0.007 M⊙ derived from VLBA astrometry, 119 radial velocities, and one Keck AO point, assuming Gaia parallax.
citing papers explorer
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GravSphere2: A higher-order Jeans method for mass-modeling spherical stellar systems
GravSphere2 extends Jeans modeling to fourth order with LOS and PM data plus flexible anisotropy forms to recover mass density, anisotropy, and density slope in spherical stellar systems while breaking the mass-anisotropy degeneracy.
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Orbital motion and dynamical mass of the complex periodic variable binary system 2MASS J05082729-2101444
The binary 2M0508-21 has an eccentric orbit (e=0.71, P=2.19 yr) and total dynamical mass 0.459±0.007 M⊙ derived from VLBA astrometry, 119 radial velocities, and one Keck AO point, assuming Gaia parallax.