1994A&A...287...95M


Query : 1994A&A...287...95M

1994A&A...287...95M - Astronomy and Astrophysics, volume 28795-104 (1994/7-1)

Simultaneous intensive photometry and high resolution spectroscopy of δ Scuti stars I. Mode typing of HD 106384 = FG Virginis.

MANTEGAZZA L., PORETTI E. and BOSSI M.

Abstract (from CDS):

53 hours of photometric observations and 7 hours of consecutive high resolution spectroscopic observations of the δ 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 vsin i=21 km/sand estimated i≃30deg. 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 (may be radial). Problems connected to mode typing and possible effects due to rotational splitting are also discussed.

Abstract Copyright: ∼

Journal keyword(s): methods: data analysis - techniques: photometric - techniques: spectroscopic - stars: individual: HD 106384 - stars: oscillations - stars: δ Scu

Simbad objects: 8

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Number of rows : 8
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 HD 105654 * 12 09 47.7520117992 -05 13 32.679930036   7.58 7.21     F3/5III/IV 30 0
2 HD 105869 ** 12 11 08.6882524296 -06 33 11.554585668   8.74 8.34     F0IV/V 12 0
3 V* FG Vir dS* 12 14 15.4565381808 -05 42 59.750820036   6.807 6.558     A8/9V 223 0
4 * bet TrA PM* 15 55 08.5620636 -63 25 50.615531 3.19 3.14 2.85 2.53 2.38 F1V 174 0
5 * eta Sco PM* 17 12 09.1940948534 -43 14 21.082311424 3.83 3.74 3.33 2.97 2.77 F5IV 158 0
6 * alf Oph ** 17 34 56.06945 +12 33 36.1346 2.32 2.22 2.07 1.93 1.85 A5IVnn 495 0
7 * del Aql ** 19 25 29.90139 +03 06 53.2061 3.72 3.68 3.36 3.11 2.95 F1IV-V(n) 247 0
8 * alf Aql dS* 19 50 46.99855 +08 52 05.9563 1.07 0.98 0.76 0.62 0.49 A7Vn 919 1

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