The Double-Mode Semiregular Variable Uu-Herculis - 1990-1992 Photometry

Details The Double-Mode Semiregular Variable Uu-Herculis - 1990-1992 Photometry The Double-Mode Semiregular Variable Uu-Herculis - 1990-1992 Photometry

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...275..484z&link_type=abstract

Astronomy and Astrophysics, Vol.275, NO.2/AUG(II), P. 484, 1993

Astronomy and Astrophysics

Astrophysics

5

Stars: Uu Her, Stars: Oscillations, Stars: Variable

Scientific paper

New photoelectric photometry of UU Her made chiefly between 1990 and 1992 is presented. Period analysis of the 1984-1992 light curve supports the previous model of the star, i.e. UU Her is a double-mode variable, with periodically varying amplitudes. The amplitude variations are more or less sinusoidal. The double-mode nature of UU Her implies moderately high mass (14 Msun) for the star. Recent theoretical studies offer two possible explanations for the high galactic latitude of UU Her: (1) ejection from a binary system because of a supernova explosion, (2) star formation through phase transition at high galactic latitudes.

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