1. PULSATION MODES OF LONG-PERIOD VARIABLES IN THE PERIOD-LUMINOSITY PLANE.
- Author
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Soszyński, I., Wood, P. R., and Udalski, A.
- Subjects
- *
STARS , *LONG-period variables , *GIANT stars , *STELLAR oscillations , *LARGE magellanic cloud - Abstract
We present a phenomenological analysis of long-period variables (LPVs) in the Large Magellanic Cloud with the aim of detecting pulsation modes associated with different period-luminosity (PL) relations. Among brighter LPVs, we discover a group of triple-mode semi-regular variables with the fundamental, first-overtone, and second-overtone modes simultaneously excited, which fall on PL sequences C, C′, and B, respectively. The mode identification in the fainter red giants is more complicated. We demonstrate that the fundamental-mode pulsators partly overlap with the first-overtone modes. We show a possible range of fundamental mode and first overtone periods in the PL diagram. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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