2014MNRAS.442.1844B

Query : 2014MNRAS.442.1844B

2014MNRAS.442.1844B - Mon. Not. R. Astron. Soc., 442, 1844-1862 (2014/August-1)

Discrepancies between isochrone fitting and gyrochronology for exoplanet host stars?

BROWN D.J.A.

Abstract (from CDS):

Using a sample of 68 planet-hosting stars, I carry out a comparison of isochrone fitting and gyrochronology to investigate whether tidal interactions between the stars and their planets are leading to underestimated ages using the latter method. I find a slight tendency for isochrones to produce older age estimates but find no correlation with tidal time-scale, although for some individual systems the effect of tides might be leading to more rapid rotation than expected from the stars' isochronal age, and therefore an underestimated gyrochronology age. By comparing to planetary systems in stellar clusters, I also find that in some cases isochrone fitting can overestimate the age of the star. The evidence for any bias on a sample-wide level is inconclusive. I also consider the subset of my sample for which the sky-projected alignment angle between the stellar rotation axis and the planet's orbital axis has been measured, finding similar patterns to those identified in the full sample. However, small sample sizes for both the misaligned and aligned systems prevent strong conclusions from being drawn.

Abstract Copyright: © 2014 The Author Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): stars: evolution - planetary systems - stars: rotation

Simbad objects: 81

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Number of rows : 81
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 WASP-96 EB* 00 04 11.1376764240 -47 21 38.320831728     12.2     G8 35 0
2 WASP-44 EB* 00 15 36.7694650296 -11 56 17.284833996   13.823 13.054 12.988 12.19 ~ 35 1
3 WASP-32 * 00 15 50.8077262344 +01 12 01.588900896   12.06 11.26 11.63 10.89 ~ 50 1
4 WASP-26 * 00 18 24.7008060816 -15 16 02.275778784   11.62 11.30 10.99 10.46 G0 54 1
5 CD-24 102 * 00 20 38.5350433008 -23 56 08.602809216   11.388 10.779 10.765   ~ 44 1
6 WASP-1 V* 00 20 40.0745768856 +31 59 23.954809596   12.06 11.31     F7V 121 1
7 WASP-45 EB* 00 20 56.9941303416 -35 59 53.746646676   13.33 11.80 12.20   ~ 31 1
8 HAT-P-16 * 00 38 17.5584024024 +42 27 47.216738232   11.38 10.91     F8 65 1
9 CD-56 324 EB* 01 38 25.0565551464 -55 46 19.525595664   11.31 10.57     G5 38 0
10 BD+00 316 * 01 57 03.2039481048 +00 45 31.875052896   11.35 10.56     G2 34 1
11 HAT-P-32 * 02 04 10.2774374568 +46 41 16.212315084   11.79 11.44 11.23   ~ 73 1
12 BD-07 436A PM* 02 28 37.2277668480 -07 03 38.376446076   11.07 10.29     G8 50 1
13 CD-50 777 * 02 39 35.4433933368 -50 00 28.879171596   10.08 9.48     F8 24 0
14 NGC 1039 OpC 02 42 07.4 +42 43 19           ~ 430 0
15 HD 17156 PM* 02 49 44.4871034544 +71 45 11.629235988   8.78 8.16     F9V 174 2
16 WASP-50 EB* 02 54 45.1341750384 -10 53 53.025224640   12.43 11.44 11.599   G9V 49 1
17 WASP-22 EB* 03 31 16.3267124400 -23 49 10.840600632   12.38 11.99 11.41   G 66 1
18 WASP-98 EB* 03 53 42.9206066712 -34 19 41.585663208     13.0     G7 30 0
19 HD 285507 PM* 04 07 01.2255871032 +15 20 06.105707556   11.670 10.473     K4 87 0
20 Cl Melotte 25 OpC 04 29 47.3 +16 56 53           ~ 3076 0
21 BD-06 1077 EB* 05 04 19.6323194352 -06 13 47.378185788   11.55 10.94     ~ 39 1
22 WASP-49 EB* 06 04 21.4735743408 -16 57 55.108744668   11.93 11.35     ~ 47 1
23 NGC 2168 OpC 06 09 05.3 +24 20 10           ~ 558 0
24 CD-38 2551 EB* 06 17 20.7484979472 -38 19 23.754062640   11.74 11.15     G8 37 1
25 CoRoT-19 * 06 28 08.0586807504 -00 10 14.532816504   14.780 14.007 14.17 13.00 ~ 31 1
26 WASP-12 EB* 06 30 32.7966092352 +29 40 20.263502460   12.14 11.57     G0V 309 1
27 CoRoT-18 * 06 32 41.3776636176 -00 01 53.725599732   15.8 15.00 14.9 14.05 ~ 47 2
28 WASP-64 EB* 06 44 27.6050701128 -32 51 30.179289384           ~ 32 1
29 HAT-P-13 * 08 39 31.8072358440 +47 21 07.273799280   11.15 10.42 10.40   G4 136 2
30 NGC 2632 OpC 08 40 13.0 +19 37 16           ~ 1566 0
31 BD+20 2184 Ro* 08 41 43.8160475073 +20 13 36.752729096   10.988 10.431     G2 91 1
32 Cl* NGC 2632 JC 278 Ro* 08 42 11.4988704792 +19 16 37.237499940   13.060 12.143     K1V 74 1
33 BD+02 2056 * 08 44 25.7031511896 +01 51 36.105474888   11.64 10.83     K1 32 0
34 WASP-36 EB* 08 46 19.2977439552 -08 01 37.015743396   13.1 12.7   12.05 G2 58 1
35 WASP-65 * 08 53 17.8288214088 +08 31 22.809193788   12.39 12.45 11.76   F9 23 1
36 HD 80606 PM* 09 22 37.5768032712 +50 36 13.435326684   9.78 9.00     G8V 330 2
37 WASP-19 EB* 09 53 40.0765648584 -45 39 33.057187596   13.05 12.31 12.12 11.35 G8V 182 2
38 WASP-19b Pl 09 53 40.0765648584 -45 39 33.057187596           ~ 370 1
39 CD-23 9677 EB* 11 01 35.8978277184 -23 51 38.386984896   11.05 10.28 10.21 9.66 ~ 61 1
40 Cl Melotte 111 OpC 12 24 03.4 +25 39 07           ~ 480 0
41 CD-29 9873 * 12 42 28.4949559632 -30 38 23.529045948   12.36 11.63 11.39 10.78 G8V 64 1
42 WASP-25 EB* 13 01 26.3760406392 -27 31 19.922387484   12.27 11.87 11.82 11.08 G4 57 1
43 WASP-55 * 13 35 01.9537865424 -17 30 12.527623872   12.69 11.75     G1 55 1
44 BD+00 3088 * 13 41 49.0301166312 -00 07 41.032748568   11.01 10.41 10.0 9.773 F8 37 1
45 WASP-16 * 14 18 43.9225013904 -20 16 31.843626168   12.51 11.29 11.00 10.49 G3V 73 1
46 WASP-39 * 14 29 18.4151689656 -03 26 40.204480380   12.93 12.09 12.17 11.29 ~ 69 1
47 WASP-37 * 14 47 46.5619510032 +01 03 53.799541704   13.304 12.704 12.87 12.24 G2V 39 1
48 WASP-57 V* 14 55 16.8228361512 -02 03 27.599615424   13.6 13.04 12.90 12.243 G6 26 1
49 BD+36 2593 * 15 19 57.9203617176 +36 13 46.738078788   11.83 11.12     F 108 1
50 HD 146389 PM* 16 15 50.3653280520 +10 01 57.284258556   9.866 9.39 9.22   F8 57 1
51 HD 149026 PM* 16 30 29.6185771608 +38 20 50.308980864   8.75 8.14     G0IV 235 1
52 TYC 2620-648-1 * 17 53 13.0489562760 +37 12 42.586493328   12.112 11.592     F8 46 2
53 WASP-58 PM* 18 18 48.2529552984 +45 10 19.260291288   12.33 11.66     G2V 33 1
54 Kepler-30 Er* 19 01 08.0746104528 +38 56 50.218268856   16.50   15.767 14.55 ~ 154 1
55 Kepler-1 EB* 19 07 14.0375836512 +49 18 59.091482160   11.85 11.25     G0V 176 2
56 Kepler-63 Er* 19 16 54.2861367672 +49 32 53.451062520   12.449 11.733 11.701   G5 114 1
57 WASP-48 * 19 24 38.9614451424 +55 28 23.332107108   12.31 11.65 11.61   ~ 47 1
58 CoRoT-2 * 19 27 06.4944378024 +01 23 01.359897468   13.422 12.568 12.204 11.49 G7V+K9V 249 2
59 Kepler-66 Ro* 19 35 55.5742859415 +46 41 15.957071005     15.3 15.29   G3 58 1
60 Kepler-67 Ro* 19 36 36.8093759520 +46 09 59.166722448     16.4     ~ 41 1
61 NGC 6811 OpC 19 37 21.6 +46 22 41   7.47 6.8     ~ 378 0
62 Kepler-89 Ro* 19 49 19.9343204784 +41 53 28.006017936           ~ 148 1
63 Kepler-17 Ro* 19 53 34.8643397568 +47 48 54.049530564   14.6   13.6   G5V 151 1
64 HAT-P-23 * 20 24 29.7234392904 +16 45 43.811510112   13.05 11.94 12.27   G0 67 1
65 WASP-2 V* 20 30 54.1282355304 +06 25 46.341284844   13 11.98     K1.5 139 1
66 HD 358155 ** 21 01 54.480000 -13 25 59.71008   11.75 10.79 11.12   G4+K3 24 1
67 WASP-46 EB* 21 14 56.8598669520 -55 52 18.458085144   13.0   13.06 12.29 G6 44 1
68 HD 209458 V* 22 03 10.7727465312 +18 53 03.549393384   8.21 7.63     F9V 1115 1
69 WASP-47 * 22 04 48.7261549272 -12 01 07.998743676     11.99 11.82   ~ 164 1
70 CD-48 14223 EB* 22 29 49.7355107880 -48 00 11.048684184   10.78 10.09     G2 30 0
71 BD-11 5929 PM* 22 49 32.5676223552 -10 40 31.926201744   12.05 11.46     ~ 30 1
72 BD+34 4779 PM* 22 52 09.8636387352 +35 26 49.608422844   10.77 10.36 10.15   F8V 82 1
73 BD+37 4734B PM* 22 57 46.8442481880 +38 40 30.358351704   10.82 9.87     G0V 169 1
74 WASP-21 * 23 09 58.2534443016 +18 23 45.885822792   12.12 11.55 11.52   G3V 59 1
75 WASP-6 * 23 12 37.7368282608 -22 40 26.273805024   12.90 11.91     G8V 94 1
76 WASP-4 EB* 23 34 15.0857248317 -42 03 41.047972591   13.51 12.48 11.9   G7V 176 1
77 WASP-28 * 23 34 27.8814904872 -01 34 48.110067912   12.61     11.47 F8-G0 44 1
78 WASP-60 * 23 46 39.9747314352 +31 09 21.374361072   12.86 12.18     G1V 28 1
79 WASP-30 * 23 53 38.0549675760 -10 07 05.095516692   12.15 11.91 11.51 10.83 F8V 42 0
80 WASP-5 EB* 23 57 23.7564672192 -41 16 37.743700800   12.808 12.146 12.058 11.44 G4V 120 1
81 CD-35 16019 PM* 23 59 36.0711872328 -35 01 52.923618408   10.49 9.87 9.91   G6 111 0

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