A variety of binary targets for small telescopes
CONTRIBUTIONS OF THE ASTRONOMICAL OBSERVATORY SKALNATE PLESO(2024)
Abstract
Results are reviewed of a long-term program of binary systems observing since 2013 at the 0.81 m telescope of the Three College Observatory in North Carolina, USA, with an e ' chelle spectrograph at a medium spectral resolution. The target list includes recognized and suspected binary systems with normal stars (no spectral lines in emission), classical Be stars, and objects with the B[e] phenomenon. The results include refinement of the orbital elements of bright binaries previously observed with photographic plates, further evidence for phased -locked peak intensity variations of double -peaked line profiles in Be binaries, and recent discoveries of binaries among objects with the B[e] phenomenon.
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Key words
spectroscopy,emission-line stars,binary systems
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