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1995A&A...297..461G - Astronomy and Astrophysics, volume 297461-464 (1995/5-2)
T Ursae Minoris: a Mira star with rapidly decreasing period.
GAL J. and SZATMARY K.
Abstract (from CDS):
Light curve analysis of the Mira star T UMi showed that the period of the star strongly decreases: between JD 2440000 and 2449250 the period dropped from 314.5days to 283.2days. Comparing the results with model calculations it seems that the period decreasing of T UMi may be due to a change in luminosity resulting from a shell flash in the helium burning shell. The rate of the period variation suggests that this Mira is just after the beginning of the shell flash.
Abstract Copyright: ∼
Journal keyword(s): methods: data analysis - stars: AGB - stars: individual: T UMi
Simbad objects: 4
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