Construction of an Inexpensive High Resolution Littrow Spectrograph for Be Star H Alpha Analysis

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

Be spectral classification stars typically show variable and complex emission detail in the H alpha spectral line. These emission phenomena are not from the star itself but are thought to originate from a circumstellar disk of material that has formed around the star due to a combination of mass loss, rapid rotation, a magnetically torqued disk of the surrounding material and nonradial stellar pulsation. To analyze these H Alpha line characteristics a high resolution spectrograph is required to display the subtle changes over time. The construction of an inexpensive high resolution Littrow spectrograph for that analysis process is herein described.

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