ZZ Canis Minoris as a symbiotic star

Astronomy and Astrophysics – Astronomy

Scientific paper

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Stellar Spectrophotometry, Symbiotic Stars, Variable Stars, Astronomical Photometry, Giant Stars, H Alpha Line, Late Stars, Semiregular Variable Stars, Stellar Magnitude

Scientific paper

The H-aplha and Na I D-line regions of the M6 giant star ZZ Canis Minoris (ZZ CMi) were observed with the Kitt Peak coude feed telescope and a CCD detector. It is shown that ZZ CMi has similar spectroscopic and photoproperties to the symbiotic star EG And. The data are used to argue for the classification of ZZ CMi as a symbiotic star despite its current listing in the General Catalog of Variable Stars (GCVS) as a semi-regular variable. The infrared magnitudes of ZZ CMi and the known symbiotic stars are compared in a table.

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