Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994dssn....7q...4m&link_type=abstract
Delta Scuti Star Newsletter, Issue 7, p. 4-4.
Astronomy and Astrophysics
Astrophysics
Scientific paper
53 hours of photometric observations and 7 hours of consecutive high resolution spectroscopic observations of the Delta Scuti star HD 106384 = FG Vir have been obtained. From photometry we were able to detect 7 pulsation modes, 4 of which were also seen in the time series describing the variations of line profiles. From spectroscopy we also derived v sin i = 21 km/s and estimated i ~ 30. The ensuing discussion of the combined results of the analyses of photometric and spectroscopic data suggests that the dominant 12.72 c/d term is probably the first radial overtone mode, two other terms (9.66 and 19.86 c/d) are nonradial non-axisymmetric modes, while a fourth term (24.22 c/d) is an axisymmetric mode (possibly radial). Problems connected to mode typing and possible effects due to rotational splitting are also discussed in a paper which will appear in Astronomy and Astrophysics.
Bossi Mariano
Mantegazza Luciano
Poretti Ennio
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