2017A&A...607A..85L


Query : 2017A&A...607A..85L

2017A&A...607A..85L - Astronomy and Astrophysics, volume 607A, 85-85 (2017/11-1)

Asteroseismology of Kepler Algol-type oscillating eclipsing binaries.

LIAKOS A.

Abstract (from CDS):

Context. This research paper contains light curve modelling, spectroscopy, and detailed asteroseismic studies for four out of a total of five semi-detached eclipsing binaries with a δ Scuti component that have been detected to date through Kepler mission; these objects are KIC 06669809, KIC 10581918, KIC 10619109, and KIC 11175495.
Aims. The goal is to study the pulsational characteristics of the oscillating stars of the systems and to estimate their absolute parameters and enrich the, thus far, poor sample of such systems.
Methods. Ground-based spectroscopic observations provided the means to estimate the spectral types of the primary components and to model the light curves with higher certainty. The photometric data were analysed using eclipsing binary modelling techniques, while Fourier analysis was applied on their residuals to reveal the pulsation frequency modes.
Results. The results of analyses show that the primaries are pulsating stars of δ Scuti type and that all systems belong to the group of Algol-type binaries that have an oscillating star (oEA stars). The primaries of KIC 06669809, KIC 10581918, and KIC 10619109 pulsate in three, two, and five frequencies, respectively, and more than 200 others are detected as combination frequencies. The pulsator of KIC 11175495 is the youngest and fastest δ Scuti star that has ever been found in a binary system and oscillates in three main non-radial frequencies and in another 153 dependent frequencies. Moreover, comparisons of the properties of these binaries with other systems of the same type and with theoretical models of pulsating stars are also presented and discussed.

Abstract Copyright: © ESO, 2017

Journal keyword(s): asteroseismology - binaries: eclipsing - stars: variables: δ Scuti - stars: oscillations (including pulsations) - stars: fundamental parameters - binaries: close - binaries: close

Simbad objects: 26

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Number of rows : 26
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 * c Psc PM* 00 02 29.7019165 +08 29 07.667311   5.996 5.690     F1V 75 0
2 * mu. And PM* 00 56 45.2121113 +38 29 57.638044 4.14 3.99 3.87 3.72 3.64 A6V 213 0
3 * 38 Cet PM* 01 14 49.1725004760 -00 58 25.659970248   6.12 5.69     F3V 112 0
4 HD 8671 PM* 01 26 18.6862929120 +43 27 27.869935680   6.464 5.978     F7V 73 0
5 HD 14221 PM* 02 19 22.6777319784 +48 57 19.657981440 6.800 6.820 6.410     F4V 59 0
6 * nu. Ari * 02 38 48.9924474480 +21 57 41.047395876   5.608 5.451     A7V 67 0
7 * mu. Ari ** 02 42 21.9357953640 +20 00 41.275791648 5.640 5.710 5.740     A0V 89 0
8 HD 18660 * 02 59 01.3515591432 -34 11 20.655263580   8.26 6.68     K5/M0III 13 0
9 * psi Tau PM* 04 07 00.4569539328 +29 00 04.709274660   5.57 5.2     F0 91 0
10 2MASS J12460812-0009085 * 12 46 08.1304174392 -00 09 08.523376416   16.50       ~ 3 0
11 HD 169840 PM* 18 26 00.9999541008 +15 45 30.361601196   7.82 7.40     F3V 24 0
12 * nu. Lyr * 18 49 52.9173189144 +32 33 03.817037196   5.316 5.226     A3V 64 0
13 2MASS J18501133+4851229 EB* 18 50 11.3302579632 +48 51 23.062804956           A4V 20 0
14 V* WX Dra EB* 18 52 10.4970148776 +47 48 16.780805352   13.260 12.794 13.495 12.381 A7V 43 0
15 TYC 3127-1399-1 EB* 18 55 38.3391597600 +42 07 51.638916756   10.96 10.51   10.310 ~ 20 0
16 * 1 Sge * 19 15 17.3609310864 +21 13 55.622676936   5.756 5.642     A4V 37 0
17 HD 184977 Er* 19 34 39.8602533072 +48 09 52.374863016 7.110 7.040 6.780     A9V 34 0
18 UCAC4 658-078826 EB* 19 44 39.5447651280 +41 33 21.137314752   15.151 14.671 14.602   ~ 14 0
19 [DCO2008] T-Cyg1-01956 EB* 19 53 29.111664 +47 48 49.81320   12.07 11.62 11.75   ~ 26 0
20 * 4 Cep * 20 43 11.0211392808 +66 39 26.810352432 5.880 5.810 5.600     A8V 52 0
21 HD 198109 PM* 20 47 38.4029918472 +16 14 18.383311068   8.05 7.60     F9Vw 41 0
22 HD 210855 PM* 22 11 48.7670966976 +56 50 21.684542208   5.75   4.9   F8V 123 0
23 * alf Lac PM* 22 31 17.5013090 +50 16 56.968200 3.78 3.78 3.77 3.77 3.80 A1V 248 0
24 HD 214035 * 22 32 16.2246408240 +76 13 35.187719268 5.740 5.710 5.700     A2V 38 0
25 HD 213660 * 22 32 26.3768839080 +39 46 47.034286932 6.180 6.030 5.880     A6V 40 0
26 HD 221970 * 23 36 30.5129112192 +32 54 15.166973556   6.792 6.335     F6V 46 0

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2022.05.25-18:45:11

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