The locations of Alpha-2 Herculis and Alpha-2 Scorpii along the line of sight

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astrometry, Companion Stars, Line Spectra, M Stars, Position (Location), Stellar Spectra, Astronomical Coordinates, Stellar Atmospheres, Stellar Envelopes, Stellar Mass Ejection, Stellar Models

Scientific paper

The theory of line formation along the line of sight to the visual companions of M stars undergoing spherically symmetric mass loss is developed. The theory is then used to determine the position of the companions relative to the primary. It is found that Alpha-2 Her is 1470 AU further along the line of sight than Alpha-1 Her for an adopted distance of 150 pc; Alpha-2 Sco is 420 AU closer than Alpha-1 Sco for an adopted distance of 185 pc.

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