2002A&A...394L...5F


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.26CET18:40:39

2002A&A...394L...5F - Astronomy and Astrophysics, volume 394, L5-8 (2002/10-4)

Detection of Solar-like oscillations in the G7 giant star ξ Hya.

FRANDSEN S., CARRIER F., AERTS C., STELLO D., MAAS T., BURNET M., BRUNTT H., TEIXEIRA T.C., DE MEDEIROS J.R., BOUCHY F., KJELDSEN H., PIJPERS F. and CHRISTENSEN-DALSGAARD J.

Abstract (from CDS):

We report the firm discovery of solar-like oscillations in a giant star. We monitored the star ξ Hya (G7III) continuously during one month with the CORALIE spectrograph attached to the 1.2m Swiss Euler telescope. The 433 high-precision radial-velocity measurements clearly reveal multiple oscillation frequencies in the range 50-130µHz, corresponding to periods between 2.0 and 5.5 hours. The amplitudes of the strongest modes are slightly smaller than 2m/s. Current model calculations are compatible with the detected modes.

Abstract Copyright:

Journal keyword(s): asteroseismology - solar type oscillations - giant stars

Simbad objects: 7

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Number of rows : 7

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 * bet Hyi PM* 00 25 45.07036 -77 15 15.2860 3.52 3.41 2.79 2.28 1.94 G0V 557 0
2 * del Eri RS* 03 43 14.9008787 -09 45 48.208444 5.13 4.46 3.54 2.82 2.32 K0+IV 551 0
3 * alf CMi SB* 07 39 18.11950 +05 13 29.9552 0.82 0.79 0.37 -0.05 -0.28 F5IV-V+DQZ 1777 0
4 * alf UMa SB* 11 03 43.67152 +61 45 03.7249 3.78 2.86 1.79 0.98 0.40 G9III+A7.5 425 0
5 * ksi Hya ** 11 33 00.1150559 -31 51 27.443449 5.17 4.47 3.54 2.84 2.36 G7IIIb 237 0
6 * alf Boo RG* 14 15 39.67207 +19 10 56.6730 2.46 1.18 -0.05 -1.03 -1.68 K1.5IIIFe-0.5 2165 0
7 * alf Cen A SB* 14 39 36.49400 -60 50 02.3737 0.96 0.72 0.01     G2V 1157 0

    Equat.    Gal    SGal    Ecl

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2021.02.26-18:40:39

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