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Geometry of the Draco C1 Symbiotic Binary

  • Authors: Hannah M. Lewis, Borja Anguiano, Keivan G. Stassun, Steven R. Majewski, Phil Arras, Craig L. Sarazin, Zhi-Yun Li, Nathan De Lee, Nicholas W. Troup, Carlos Allende Prieto, Carles Badenes, Katia Cunha, D. A. García-Hernández, David L. Nidever, Pedro A. Palicio, Joshua D. Simon, and Verne V. Smith

2020 The Astrophysical Journal Letters 900 L43.

  • Provider: AAS Journals

Caption: Figure 4.

Radius of the Roche lobe, RL, of the RG (solid line) and the semimajor axis, a, of the Draco C1 orbit (dashed line) versus the mass ratio, q (lower x-axis), and inclination, i (upper x-axis). The radius of the photosphere of the Draco C1 RG RRG and minimum mass ratio q = 0.344 are indicated by the blue star. Note that RL depends very weakly on q (and therefore i), so that for any inclination the orbital separation is expected to be large enough that the RG’s photosphere is inside the Roche lobe.

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