2006ApJ...647..558B

Query : 2006ApJ...647..558B

2006ApJ...647..558B - Astrophys. J., 647, 558-563 (2006/August-2)

Solar-like oscillations in the metal-poor subgiant ν Indi: constraining the mass and age using asteroseismology.

BEDDING T.R., BUTLER R.P., CARRIER F., BOUCHY F., BREWER B.J., EGGENBERGER P., GRUNDAHL F., KJELDSEN H., McCARTHY C., NIELSEN T.B., RETTER A. and TINNEY C.G.

Abstract (from CDS):

Asteroseismology is a powerful method for determining fundamental properties of stars. We report the first application to a metal-poor object, namely the subgiant star ν Ind. We measured precise velocities from two sites, allowing us to detect oscillations and infer a large frequency separation of Δν=24.25±0.25 µHz. Combining this value with the location of the star in the H-R diagram and comparing with standard evolutionary models, we were able to place constraints on the stellar parameters. In particular, our results indicate that ν Ind has a low mass (0.85±0.04 M☉) and is at least 9 Gyr old.

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Journal keyword(s): stars: individual (ν Indi) - stars: oscillations - Sun: helioseismology

Simbad objects: 6

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Number of rows : 6
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 49933 PM* 06 50 49.8309774552 -00 32 27.167495244   6.147 5.771 7.04   F3V 407 2
2 * bet Vir PM* 11 50 41.7185158616 +01 45 53.001539131 4.26 4.15 3.60 3.13 2.85 F9V 973 0
3 * eta Boo SB* 13 54 41.07892 +18 23 51.7946 3.440 3.250 2.680 2.24 1.95 G0IV 733 0
4 * alf Cen B PM* 14 39 35.06311 -60 50 15.0992 2.89 2.21 1.33     K1V 1092 2
5 * alf Cen A SB* 14 39 36.49400 -60 50 02.3737 0.96 0.72 0.01     G2V 1352 1
6 * nu. Ind ** 22 24 36.8853892493 -72 15 19.488237466   5.94 5.29     G9VFe-3.1CH-1.5 290 0

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