2019A&A...622A.130B

Query : 2019A&A...622A.130B

2019A&A...622A.130B - Astronomy and Astrophysics, volume 622A130-130 (2019/2-1)

Stellar ages, masses, and radii from asteroseismic modeling are robust to systematic errors in spectroscopy.

BELLINGER E.P., HEKKER S., ANGELOU G.C., STOKHOLM A. and BASU S.

Abstract (from CDS):


Context. The search for twins of the Sun and Earth relies on accurate characterization of stellar and the exoplanetary parameters age, mass, and radius. In the modern era of asteroseismology, parameters of solar-like stars are derived by fitting theoretical models to observational data, which include measurements of their oscillation frequencies, metallicity [Fe/H], and effective temperature Teff. Furthermore, combining this information with transit data yields the corresponding parameters for their associated exoplanets.
Aims. While values of [Fe/H] and Teff are commonly stated to a precision of ∼0.1dex and ∼100K, the impact of systematic errors in their measurement has not been studied in practice within the context of the parameters derived from them. Here we seek to quantify this.
Methods. We used the Stellar Parameters in an Instant (SPI) pipeline to estimate the parameters of nearly 100 stars observed by Kepler and Gaia, many of which are confirmed planet hosts. We adjusted the reported spectroscopic measurements of these stars by introducing faux systematic errors and, separately, artificially increasing the reported uncertainties of the measurements, and quantified the differences in the resulting parameters.
Results. We find that a systematic error of 0.1 dex in [Fe/H] translates to differences of only 4%, 2%, and 1% on average in the resulting stellar ages, masses, and radii, which are well within their uncertainties (∼11%, 3.5%, 1.4%) as derived by SPI. We also find that increasing the uncertainty of [Fe/H] measurements by 0.1dex increases the uncertainties of the ages, masses, and radii by only 0.01Gyr, 0.02M☉, and 0.01R☉, which are again well below their reported uncertainties (∼0.5Gyr, 0.04M☉, 0.02R☉). The results for Teff at 100K are similar.
Conclusions. Stellar parameters from SPI are unchanged within uncertainties by errors of up to 0.14dex or 175K. They are even more robust to errors in Teff than the seismic scaling relations. Consequently, the parameters for their exoplanets are also robust.

Abstract Copyright: © ESO 2019

Journal keyword(s): asteroseismology - stars: abundances - stars: low-mass - planets and satellites: fundamental parameters - stars: oscillations - stars: evolution

Errata: erratum vol. 635, art. C2 (2020)

Simbad objects: 97

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Number of rows : 97
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 BD+47 2683 * 18 43 42.4230433392 +47 56 16.009897416   9.85 9.26     G0V 96 0
2 HD 173701 PM* 18 44 35.1191008536 +43 49 59.790008892   8.37 7.52     G8V 210 0
3 KOI-263 Ro* 18 45 05.7919625976 +47 46 27.922365300   11.57 10.82     G0V 57 0
4 BD+46 2555 Em* 18 47 39.2486448504 +46 41 09.979229364   9.98 9.52     F6IV 63 0
5 BD+47 2703 PM* 18 49 33.6586835784 +47 42 39.607192296   10.16 9.54 9.473   F9IV-V 61 0
6 Kepler-128 Er* 18 49 58.1342142288 +43 58 48.694489320   11.984 11.380 11.280   F2 105 0
7 BD+43 3102 Er* 18 51 39.5934542496 +43 38 09.727323360   10.10 9.44 9.326   G5V 78 0
8 HD 175226 * 18 52 16.4984285976 +43 42 35.801031636   7.91 7.42     F6IV 84 0
9 HD 175289 PM* 18 52 36.1604006928 +45 08 23.345639700   9.95 9.50 9.44   F6IV 126 0
10 BD+44 3020 Em* 18 56 14.3076037320 +44 31 05.389610412   10.45 9.77     G8V 158 1
11 BD+45 2796 PM* 18 56 21.2642726544 +45 30 53.234154468   9.80 9.29     G0.5IV 110 0
12 HD 176071 PM* 18 56 22.1268370056 +45 30 25.361404632   8.81 8.33     F8IV 100 0
13 HD 176153 * 18 56 36.6514583496 +47 39 23.133492756   9.20 8.68     F9IV-V 95 0
14 Kepler-95 Er* 18 57 55.7883819888 +44 23 52.818842400   13.313 12.481 12.268   G5V 102 0
15 HD 176693 Er* 18 59 08.6844743448 +48 25 23.600359776   9.34 8.83 8.996   F8V 148 0
16 TYC 3132-1582-1 * 19 00 06.9395680104 +44 01 45.057208980   11.53 11.05     F8V 38 0
17 Kepler-129 Er* 19 01 14.7043468776 +47 50 54.901789800   12.67 11.81 11.603   G4V 106 0
18 HD 177153 PM* 19 01 39.6780721176 +41 29 24.328113936   7.76 7.21     G0 133 0
19 BD+40 3567 * 19 01 45.0508649856 +41 04 50.082446568   9.77 9.27     G0.5IV 43 0
20 TYC 3541-2345-1 Em* 19 02 09.8972932896 +45 16 39.357745608   10.90 10.21     G3V 57 0
21 Kepler-4 Er* 19 02 27.6979514832 +50 08 08.703945600   13.114 12.293 12.195   G0 119 1
22 HD 177412 SB* 19 02 39.4175915928 +43 07 02.940702096   8.38 7.86     F6IV 76 0
23 Kepler-10 Em* 19 02 43.0613892904 +50 14 28.701617339       11.00   G2V 238 1
24 KOI-268 ** 19 02 54.9120176040 +38 30 25.083958896   11.13 10.59 10.583   ~ 68 0
25 HD 177723 Em* 19 03 45.1355799960 +45 36 30.189464856   9.54 9.10     F8IV 75 0
26 BD+38 3428 PM* 19 05 45.2617733112 +38 31 22.560830328   9.77 9.22     F9IV-V 78 0
27 Kepler-25 Er* 19 06 33.2141354736 +39 29 16.358725104   11.337 10.623 10.622   F6 192 1
28 Kepler-1655 Er* 19 06 45.4641571944 +39 12 42.966734328   11.62 11.05 11.011   F5 87 0
29 HD 178509 * 19 06 55.9481056080 +42 40 19.342963020   9.39 8.86     F8IV 66 0
30 BD+42 3247 SB* 19 06 58.3280630808 +42 26 08.260897020   10.32 9.75     G0.5IV 81 0
31 HD 178688 * 19 07 43.5917202168 +41 56 15.730146420   9.48 9.02     F6IV 58 0
32 Kepler-1713 Er* 19 09 22.9787972016 +43 22 42.207634092   11.474 10.982 10.901   F6IV 82 0
33 HD 179070 Er* 19 09 26.8349590368 +38 42 50.455534860   8.767 8.25 8.00   F6IV 200 1
34 HD 179260 V* 19 10 11.6372611944 +38 04 55.831675296   8.94 8.49     F5IV-V 80 0
35 Kepler-510 Er* 19 10 37.1971512528 +39 14 39.414057504   12.84 12.07 11.987   G5V 74 0
36 HD 179732 * 19 11 53.4817713600 +42 06 27.748644156   9.19 8.74     F5IV-V 61 0
37 TYC 3129-1587-1 PM* 19 12 02.2414844760 +42 40 18.811066440   11.49 10.84     ~ 40 0
38 TYC 3121-559-1 Er* 19 12 16.6298175336 +38 49 03.612586404   10.35 9.75 9.675   G0 50 0
39 Kepler-50 Er* 19 12 24.2128368312 +50 02 01.374741852   11.02 10.54 10.387   F5 131 1
40 BD+40 3638 Er* 19 14 45.2915908224 +41 09 04.210237980   11.643 11.115 11.009   F6IV 159 1
41 TYC 3129-3292-1 * 19 15 08.0773876584 +41 17 55.520968020   11.59 11.00     G8V 40 0
42 HD 180867 * 19 15 54.6866907216 +47 03 40.230679068   8.75 8.24     F6IV 67 0
43 Kepler-103 Er* 19 15 56.2939334304 +40 03 52.285818168   13.136 12.360 12.254   G5Ib 114 0
44 Kepler-92 Er* 19 16 20.6546892216 +41 33 46.654315236   12.460 11.849 11.777   G0IV 101 0
45 BD+39 3706 SB* 19 16 34.9026130056 +40 02 50.359631244       9.1   G1.5V 92 0
46 Kepler-126 Er* 19 17 23.3505657144 +44 12 30.709225008   11.182 10.566 10.515   F7IV 108 0
47 HD 234856 Em* 19 17 45.8018919144 +50 28 48.274775580   9.87 9.32     F9IV-V 94 0
48 HD 181207 PM* 19 17 46.3565007888 +41 24 36.838219932   9.06 8.47     F9IV-V 105 0
49 BD+44 3101 Em* 19 18 33.2045067096 +44 24 16.268768568   11.06 10.37     G2V 54 0
50 Kepler-509 Er* 19 18 39.4600939944 +48 42 22.287851136   12.606 12.010 11.785   G0V 69 0
51 KOI-5 EB* 19 18 57.5306473320 +44 38 50.618934060   12.560 11.735 11.613   G2V 91 0
52 BD+41 3306 PM* 19 19 00.5489000285 +41 38 04.582441681 10.01 9.67 8.86 8.18 7.66 K0V 331 0
53 KOI-319 Er* 19 20 28.2085336008 +44 52 22.548870588   13.043 12.226 12.136   G2V 69 0
54 BD+43 3221 Em* 19 20 47.9392965792 +44 09 18.751522032   10.03 9.50     F9IV-V 93 0
55 Kepler-109 Er* 19 21 34.2534438336 +40 17 05.498443284   13.162 12.388 12.320   G4V 94 0
56 BD+48 2887 Em* 19 22 20.2267974168 +48 41 43.496977812   9.43 9.01     F5IV 59 0
57 BD+43 3228 PM* 19 23 56.4112114464 +43 18 52.537486464   10.830 10.170 10.035   G0V 72 0
58 BD+48 2893 Er* 19 24 07.7659706688 +49 02 24.928348272   10.73 10.08 9.914   G1V 161 1
59 BD+41 3338 Em* 19 24 11.1933479232 +42 03 09.726975180   9.97 9.19     G8IV-V 85 0
60 HD 182756 * 19 24 30.3488274144 +40 19 23.671912908   9.01 8.31     G1V 78 0
61 Kepler-36 Er* 19 25 00.0428079600 +49 13 54.630900876   12.795 12.174 12.094   F2 251 1
62 Kepler-100 Er* 19 25 32.6432787456 +41 59 24.945100548   12.009 11.278 11.128   G8IV 142 0
63 Kepler-145 Er* 19 25 33.0613997040 +44 31 44.752299852   12.737 12.035 11.903   G1V 88 0
64 BD+38 3583 Er* 19 25 40.3885404552 +38 40 20.413186860   10.73 10.00 9.853   G5V 148 0
65 BD+42 3339 Er* 19 25 59.3297612712 +42 43 42.485027700   11.427 10.872 10.742   F8V 88 1
66 HD 183298 PM* 19 26 22.0906256352 +50 59 14.334181836   8.71 8.16     G0.5IV 112 0
67 TYC 3547-1205-1 Em* 19 26 30.4913226360 +48 05 34.858459896   10.90 10.38     F5IV 32 0
68 BD+36 3570 * 19 28 19.8441075024 +37 03 35.403120000   9.40 8.97     F8IV 74 0
69 BD+47 2846 Er* 19 28 59.3538826128 +47 58 10.217007804   10.97 10.48     F6V 343 1
70 HD 184401 Em* 19 32 14.5949892072 +45 18 38.308886100   9.63 8.95     G4V 69 0
71 TYC 3560-2509-1 Em* 19 33 52.7745159792 +47 02 44.511974340   10.76 10.21     G0V 69 0
72 BD+46 2726 Er* 19 34 43.0022454096 +46 51 09.938179044   10.36 9.64 9.438   K0V 156 0
73 Kepler-1714 EB* 19 34 51.9513700320 +46 13 35.876312328   11.54 11.04 10.934   F7V 85 0
74 TYC 3143-53-1 SB* 19 35 03.7372740120 +42 44 16.724850540   10.31 9.85     F8IV 83 0
75 BD+44 3183 Em* 19 35 50.5739000112 +44 52 50.022974316   9.38 8.92     hF6mF2gF5V 70 0
76 TYC 3135-624-1 PM* 19 36 48.8136243480 +38 42 56.789855496   10.35 9.55     G5IV 88 0
77 BD+44 3197 PM* 19 37 54.5252033200 +44 59 04.630621506   10.287 9.641 9.546   G0IV 82 0
78 TYC 3556-909-1 PM* 19 37 56.6968217208 +45 57 52.273038852   11.31 10.78 10.643   F6V 63 0
79 TYC 3135-416-1 * 19 38 10.6797868344 +38 31 00.667275996   10.20 9.72     F5IV-V 43 0
80 TYC 3556-3445-1 SB* 19 40 21.2108930904 +45 29 20.963746392   10.48 9.91     G3V 87 0
81 TYC 3564-2971-1 * 19 41 12.7935225264 +50 33 54.730755720   11.31 10.81     F5V 45 0
82 HD 186306 Em* 19 41 45.6454247760 +43 44 51.716276232   8.70 7.96     G9V 75 0
83 * 16 Cyg A ** 19 41 48.9534996168 +50 31 30.219536784 6.79 6.59 5.95 5.50 5.17 G1.5Vb 814 0
84 * 16 Cyg B PM* 19 41 51.9726777456 +50 31 03.089030916 7.07 6.86 6.20 5.76 5.42 G3V 949 1
85 BD+45 2960 Er* 19 43 12.6574592352 +45 59 17.085937164   10.16 9.64 9.575   F6IV 90 0
86 KOI-364 Er* 19 43 29.3535442392 +42 52 52.083279732   10.678 10.244 10.005   G2.5IVa 77 0
87 HD 186700 PM* 19 43 39.6223173216 +48 55 43.808906244   8.86 8.47     F5IV-V 84 0
88 TYC 3557-1752-1 * 19 44 10.6859489280 +45 53 21.115385016   11.39 10.86     ~ 38 0
89 BD+43 3349 * 19 45 23.9642658792 +44 04 35.865815844   10.01 9.51     F6IV 53 0
90 TYC 3565-1235-1 PM* 19 45 45.9639229488 +49 59 18.851817444   10.68 9.84 9.677   K1V 53 0
91 HD 234998 PM* 19 46 37.7417153592 +51 01 13.527778440   9.16 8.75     F5 67 0
92 HD 187160 SB* 19 46 41.3411982432 +44 20 54.601189476   7.650 7.083     F9IV-V 114 0
93 HD 187637 PM* 19 49 18.1388793264 +41 34 56.859084552       7.2   F8V 132 0
94 BD+46 2785 Em* 19 49 19.9798259088 +46 49 36.018970176   9.962 9.225 9.234   F2V 41 0
95 TYC 3148-521-1 * 19 49 28.8561901056 +43 25 46.431332256   11.22 10.89     F7IV 45 0
96 HD 188819 * 19 54 54.1810396872 +47 08 42.949406328   9.12 8.66     F8IV 78 0
97 HD 190166 PM* 20 01 51.4248305136 +44 21 14.147515008   10.13 9.581 9.523   F8V 69 0

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