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Izmailov, A. M.

doi:10.1023/a:1016079808421

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Application To the Wide Binary System Hip 4731

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2021

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“…Despite this effort and many decades of observation, MAKAROV there is some ambiguity about the orbit. A much shorter-period orbit with a higher eccentricity was proposed by Izmailov (2019): P = 370.7 yr, e = 0.48. Consequently, the total mass for this version is substantially smaller, yielding a mass of ≈ 0.6 M for each component, when equally divided.…”

Section: Application To the Wide Binary System Hip 473mentioning

confidence: 93%

Mass Ratios of Long-Period Binary Stars Resolved in Precision Astrometry Catalogs of Two Epochs

Makarov

2021

RMxAA

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Mass ratios of widely separated, long-period, resolved binary stars can be directly estimated from the available data in major space astrometry catalogs, such as the ESA's Hipparcos and Gaia mission results. The method is based on the universal principle of inertial motion of the system's center of mass in the absence of external forces, and is independent of any assumptions about the physical parameters or stellar models. The application is limited by the precision of input astrometric data, the orbital period and distance to the system, and possible presence of other attractors in the vicinity, such as in triple systems. A generalization of this technique to triples is proposed, as well as approaches to estimation of uncertainties. The known long-period binary HIP 473 AB is discussed as an application example, for which a m2/ m1 = 0.996+0.026 −0.026 is obtained.

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Section: Application To the Wide Binary System Hip 473mentioning

confidence: 93%

Mass Ratios of Long-Period Binary Stars Resolved in Precision Astrometry Catalogs of Two Epochs

Makarov

2021

RMxAA

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Mass Ratios of Long-Period Binary Stars Resolved in Precision Astrometry Catalogs of Two Epochs

Mass Ratios of Long-Period Binary Stars Resolved in Precision Astrometry Catalogs of Two Epochs

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