The close circumstellar environment of Betelgeuse - V. Rotation velocity and molecular envelope properties from ALMA

Pierre Kervella; Leen Decin; Anita M. S. Richards; Graham M. Harper; Iain McDonald; Eamon O’Gorman; Miguel Montargès; Ward Homan; Keiichi Ohnaka

doi:10.1051/0004-6361/201731761

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Fig. 2

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Channel map of the continuum subtracted emission from the ²⁸SiO(ν= 2, J = 8−7) line. The velocity offset from the LSR systemic velocity of ν_sys = + 4.52 km s^-1 is given in the upper right corner of each panel in km s^-1. The field of view is 100 mas × 100 mas.

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