1996A&A...315..481M

Query : 1996A&A...315..481M

1996A&A...315..481M - Astronomy and Astrophysics, volume 315481-484 (1996/11-3)

BS Lyrae: a double mode Mira star with a dominant first overtone mode.

MANTEGAZZA L.

Abstract (from CDS):

The frequency analysis of the photographic B light curve of the Mira star BS Lyr reveals besides the dominant period (P1=304.7d) the unambiguous presence of a second one with P2=272.3d. The analysis shows also the presence of the non-linear coupling terms between the two periodicities (1/P1+1/P2 and 1/P2-1/P1). The ratio between the two periods P1/P2=1.119±0.005 indicates that the two modes are the first (P1) and the second (P2) radial overtones. A third periodicity with P=179d could be also present, even if it is only marginally significant. It could correspond to the third overtone mode.

Abstract Copyright: ∼

Journal keyword(s): data analysis - stars: AGB: post-AGB - stars: individual: BS Lyr - stars: oscillations

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 - 2026 		#notes
1 V* S CMi Mi* 07 32 43.0693155312 +08 19 05.197531404     6.60     M7-8e 166 0
2 V* BS Lyr Mi* 19 12 16.6063600656 +29 14 33.240251508       13.40   ~ 15 0
3 * chi Cyg S* 19 50 33.9213430345 +32 54 50.575531294 7.02 6.06 4.24 1.81 -0.01 S6-9/1-2e 721 0

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