1998A&A...337L..29F

Query : 1998A&A...337L..29F

1998A&A...337L..29F - Astronomy and Astrophysics, volume 337, L29-33 (1998/9-2)

A nonlinear model for RR Lyrae double mode pulsation.

FEUCHTINGER M.U.

Abstract (from CDS):

The Vienna nonlinear code for modelling pulsating stars is applied to the problem of RR Lyrae double mode pulsation. For stellar parameters of M=0.65M☉, log(L/L☉)=1.72 and XYZ=(0.760, 0.239, 0.001) we find a stable double mode solution in a small effective temperature range around 6820K. The fundamental period is given by P0=0.5279 days and period and amplitude ratios corresponding to P1/P0=0.7468 and A1/A0=2.943 lie within the range of observed RR Lyrae double mode parameters.

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Journal keyword(s): stars: variables: RR Lyrae - stars: oscillations - methods: nonlinear - methods: numerical

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 M 68 GlC 12 39 27.98 -26 44 38.6     7.96     ~ 997 0
2 IC 4499 GlC 15 00 18.57 -82 12 49.6     8.56     ~ 351 0
3 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3138 0

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