2012A&A...537A.134A


Query : 2012A&A...537A.134A

2012A&A...537A.134A - Astronomy and Astrophysics, volume 537A, 134-134 (2012/1-1)

Oscillation mode linewidths of main-sequence and subgiant stars observed by Kepler.

APPOURCHAUX T., BENOMAR O., GRUBERBAUER M., CHAPLIN W.J., GARCIA R.A., HANDBERG R., VERNER G.A., ANTIA H.M., CAMPANTE T.L., DAVIES G.R., DEHEUVELS S., HEKKER S., HOWE R., SALABERT D., BEDDING T.R., WHITE T.R., HOUDEK G., SILVA AGUIRRE V., ELSWORTH Y.P., VAN CLEVE J., CLARKE B.D., HALL J.R. and KJELDSEN H.

Abstract (from CDS):

Solar-like oscillations have been observed by Kepler and CoRoT in several solar-type stars. We study the variations in the stellar p-mode linewidth as a function of effective temperature. We study a time series of nine months of Kepler data. We analyse the power spectra of 42 cool main-sequence stars and subgiants using both maximum likelihood estimators and Bayesian estimators to recover individual mode characteristics such as frequencies, linewidths, and mode heights. We report on the mode linewidth at both maximum power and maximum mode height for these 42 stars as a function of effective temperature. We show that the mode linewidth at either maximum mode height or maximum amplitude follows a scaling relation with effective temperature, which is a combination of a power law and a lower bound. The typical power-law index is about 13 for the linewidth derived from the maximum mode height, and about 16 for the linewidth derived from the maximum amplitude, while the lower bound is about 0.3 µHz and 0.7 µHz, respectively. We stress that this scaling relation is only valid for cool main-sequence stars and subgiants, and does not have any predictive power outside the temperature range of these stars.

Abstract Copyright:

Journal keyword(s): methods: data analysis - asteroseismology - stars: solar-type

Simbad objects: 42

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Number of rows : 42
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 BD+47 2683 * 18 43 42.4230433392 +47 56 16.009897416   9.85 9.26     G0V 73 0
2 HD 173701 PM* 18 44 35.1191008536 +43 49 59.790008892   8.37 7.52     G8V 170 0
3 BD+46 2555 Ro* 18 47 39.2486448504 +46 41 09.979229364   9.98 9.52     F6IV 49 0
4 BD+43 3102 Er* 18 51 39.5934542496 +43 38 09.727323360   10.10 9.44 9.326   G5V 63 0
5 BD+45 2796 PM* 18 56 21.2642726544 +45 30 53.234154468   9.80 9.29     G0.5IV 91 0
6 HD 176071 Er* 18 56 22.1268370056 +45 30 25.361404632   8.81 8.33     F8IV 83 0
7 HD 176153 Ro* 18 56 36.6514583496 +47 39 23.133492756   9.20 8.68     F9IV-V 82 0
8 HD 176693 Er* 18 59 08.6844743448 +48 25 23.600359776   9.34 8.83 8.996   F8V 121 0
9 TYC 3120-180-1 * 19 00 42.9751446288 +38 34 24.884003820   10.33 9.84     G0IV 24 0
10 HD 177723 * 19 03 45.1355799960 +45 36 30.189464856   9.54 9.10     F8IV 59 0
11 TYC 3545-1033-1 * 19 04 45.6026995824 +48 21 33.390090000   11.349 10.909 10.871   F6IV 25 0
12 BD+38 3428 PM* 19 05 45.2617733112 +38 31 22.560830328   9.77 9.22     F9IV-V 62 0
13 HD 178509 Ro* 19 06 55.9481056080 +42 40 19.342963020   9.39 8.86     F8IV 51 0
14 BD+42 3247 SB* 19 06 58.3280630808 +42 26 08.260897020   10.32 9.75     G0.5IV 65 0
15 HD 178688 * 19 07 43.5917202168 +41 56 15.730146420   9.48 9.02     F6IV 43 0
16 HD 178971 Ro* 19 09 01.9438328856 +38 53 59.485809012   8.79 8.36     F5IV-V 71 0
17 HD 179260 * 19 10 11.6372611944 +38 04 55.831675296   8.94 8.49     F5IV-V 64 0
18 HD 179732 * 19 11 53.4817713600 +42 06 27.748644156   9.19 8.74     F5IV-V 46 0
19 TYC 3129-1587-1 PM* 19 12 02.2414844760 +42 40 18.811066440   11.49 10.84     ~ 29 0
20 TYC 3121-559-1 Er* 19 12 16.6298175336 +38 49 03.612586404   10.35 9.75 9.675   ~ 36 0
21 HD 234856 Ro* 19 17 45.8018919144 +50 28 48.274775580   9.87 9.32     F9IV-V 79 0
22 HD 181207 PM* 19 17 46.3565007888 +41 24 36.838219932   9.06 8.47     F9IV-V 86 0
23 BD+43 3221 * 19 20 47.9392965792 +44 09 18.751522032   10.03 9.50     F9IV-V 76 0
24 BD+48 2887 * 19 22 20.2267974168 +48 41 43.496977812   9.43 9.01     F5IV 44 0
25 BD+41 3338 * 19 24 11.1933479232 +42 03 09.726975180   9.97 9.19     G8IV-V 70 0
26 HD 183298 PM* 19 26 22.0906256352 +50 59 14.334181836   8.71 8.16     G0.5IV 97 0
27 TYC 3551-149-1 PM* 19 27 20.4900952416 +48 57 12.010523580   10.59 9.85     G5IV 51 0
28 BD+36 3570 Ro* 19 28 19.8441075024 +37 03 35.403120000   9.40 8.97     F8IV 60 0
29 HD 184401 PM* 19 32 14.5949892072 +45 18 38.308886100   9.63 8.95     G4V 52 0
30 BD+46 2726 Er* 19 34 43.0022454096 +46 51 09.938179044   10.36 9.64 9.438   K0V 122 0
31 TYC 3143-53-1 Ro* 19 35 03.7372740120 +42 44 16.724850540   10.31 9.85     F8IV 64 0
32 BD+44 3183 PM* 19 35 50.5739000112 +44 52 50.022974316   9.38 8.92     hF6mF2gF5V 59 0
33 TYC 3556-909-1 Er* 19 37 56.6968217208 +45 57 52.273038852   11.31 10.78 10.643   F6V 47 0
34 HD 185834 * 19 39 00.6724153968 +46 54 06.984718740   9.26 8.78     F6IV 41 0
35 TYC 3556-3445-1 PM* 19 40 21.2108930904 +45 29 20.963746392   10.48 9.91     G3V 72 0
36 HD 186700 PM* 19 43 39.6223173216 +48 55 43.808906244   8.86 8.47     F5IV-V 71 0
37 TYC 3565-1235-1 Er* 19 45 45.9639229488 +49 59 18.851817444   10.68 9.84 9.677   K1V 39 0
38 HD 234998 PM* 19 46 37.7417153592 +51 01 13.527778440   9.16 8.75     F5 52 0
39 HD 187160 SB* 19 46 41.3411982432 +44 20 54.601189476   7.650 7.083     F9IV-V 98 0
40 BD+47 2934 Ro* 19 50 14.2728443568 +47 28 25.166654760   9.68 9.24     F5IV-V 46 0
41 HD 188819 Ro* 19 54 54.1810396872 +47 08 42.949406328   9.12 8.66     F8IV 65 0
42 HD 190166 Er* 20 01 51.4248305136 +44 21 14.147515008   10.13 9.581 9.523   F8V 55 0

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