2017A&A...601A..82W


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.20CEST00:50:53

2017A&A...601A..82W - Astronomy and Astrophysics, volume 601A, 82-82 (2017/5-1)

Kepler observations of the asteroseismic binary HD 176465.

WHITE T.R., BENOMAR O., SILVA AGUIRRE V., BALL W.H., BEDDING T.R., CHAPLIN W.J., CHRISTENSEN-DALSGAARD J., GARCIA R.A., GIZON L., STELLO D., AIGRAIN S., ANTIA H.M., APPOURCHAUX T., BAZOT M., CAMPANTE T.L., CREEVEY O.L., DAVIES G.R., ELSWORTH Y.P., GAULME P., HANDBERG R., HEKKER S., HOUDEK G., HOWE R., HUBER D., KAROFF C., MARQUES J.P., MATHUR S., McQUILLAN A., METCALFE T.S., MOSSER B., NIELSEN M.B., REGULO C., SALABERT D. and STAHN T.

Abstract (from CDS):

Binary star systems are important for understanding stellar structure and evolution, and are especially useful when oscillations can be detected and analysed with asteroseismology. However, only four systems are known in which solar-like oscillations are detected in both components. Here, we analyse the fifth such system, HD 176465, which was observed by Kepler. We carefully analysed the system's power spectrum to measure individual mode frequencies, adapting our methods where necessary to accommodate the fact that both stars oscillate in a similar frequency range. We also modelled the two stars independently by fitting stellar models to the frequencies and complementaryparameters. We are able to cleanly separate the oscillation modes in both systems. The stellar models produce compatible ages and initial compositions for the stars, as is expected from their common and contemporaneous origin. Combining the individual ages, the system is about 3.0±0.5Gyr old. The two components of HD 176465 are young physically-similar oscillating solar analogues, the first such system to be found, and provide important constraints for stellar evolution and asteroseismology.

Abstract Copyright: © ESO, 2017

Journal keyword(s): asteroseismology - methods: data analysis - stars: individual: HD 176465 - stars: individual: HD 176465

Simbad objects: 13

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Number of rows : 13

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 * alf Cen B PM* 14 39 35.06311 -60 50 15.0992 2.89 2.21 1.33     K1V 864 1
2 * alf Cen A SB* 14 39 36.49400 -60 50 02.3737 0.96 0.72 0.01     G2V 1106 0
3 BD+45 2796 PM* 18 56 21.2644967292 +45 30 53.232987726   9.80 9.29     G0.5IV 61 0
4 HD 176071 PM* 18 56 22.1269692202 +45 30 25.359126300   8.81 8.33     F8IV 60 0
5 HD 176465B * 18 58 03.431 +47 11 29.18   9.24 8.60     ~ 4 0
6 HD 176465 ** 18 58 03.46393 +47 11 30.6471   8.7 8.1     G4V 42 0
7 HD 176465A * 18 58 03.487 +47 11 30.75   9.06 8.47     ~ 5 0
8 HD 177412 ** 19 02 39.4182581022 +43 07 02.952679093   8.38 7.86     F6IV 43 0
9 TYC 3139-2289-1 * 19 34 07.3701908240 +39 34 19.498209867   12.49 12.17     ~ 2 0
10 KIC 10080943 gD* 19 36 27.3038490416 +47 05 02.151901935   12.40 11.65     F6II 32 0
11 * 16 Cyg A ** 19 41 48.9539315338 +50 31 30.218780803 6.79 6.59 5.95 5.50 5.17 G1.5Vb 664 1
12 * 16 Cyg ** 19 41 49.09 +50 31 31.6           ~ 111 0
13 * 16 Cyg B PM* 19 41 51.9731830550 +50 31 03.086127222 7.07 6.86 6.20 5.76 5.42 G3V 781 1

    Equat.    Gal    SGal    Ecl

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2019.10.20-00:50:53

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