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HD 100367


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Frequency analysis and pulsation mode identification of the Delta Scuti star HD101158
The results of 13 quasi-consecutive nights of observation of the DeltaScuti star HD101158 are presented. The observations are carried out on a50-cm reflector and are subjected to 1234B measurements, a frequencyanalysis, and a Stromgen analysis. Three terms and their correspondingsemiamplitudes are identified: f1 = 12.16222c/d, f2 = 10.83219c/d, andf3 = 9.27215c/d, corresponding to semiamplitudes of 0.0155 mag, 0.007mag, and 0.006 mag, respectively. The ratios of these terms, consideredin conjunction with the pulsational constants Qi, offer the possibilitythat the star is pulsating in both the first overtone and thefundamental radial mode with the excitation of a nonradial mode.Comparisons with earlier observations show that the star has been stablefor a time interval of four years. The measurements show that the staris well inside the instability strip, and it is very close to the hotborderline of the fundamental radial mode.

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Observation and Astrometry data

Constellation:Centaurus
Right ascension:11h32m34.42s
Declination:-47°03'34.8"
Apparent magnitude:7.766
Distance:281.69 parsecs
Proper motion RA:-23.1
Proper motion Dec:-0.4
B-T magnitude:7.817
V-T magnitude:7.771

Catalogs and designations:
Proper Names
HD 1989HD 100367
TYCHO-2 2000TYC 8218-295-1
USNO-A2.0USNO-A2 0375-13950792
HIPHIP 56304

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