2021MNRAS.505.2427L

Query : 2021MNRAS.505.2427L

2021MNRAS.505.2427L - Mon. Not. R. Astron. Soc., 505, 2427-2446 (2021/August-1)

Hierarchically modelling Kepler dwarfs and subgiants to improve inference of stellar properties with asteroseismology.

LYTTLE A.J., DAVIES G.R., LI T., CARBONEAU L.M., LEUNG H.-H., WESTWOOD H., CHAPLIN W.J., HALL O.J., HUBER D., NIELSEN M.B., BASU S. and GARCIA R.A.

Abstract (from CDS):

With recent advances in modelling stars using high-precision asteroseismology, the systematic effects associated with our assumptions of stellar helium abundance (Y) and the mixing-length theory parameter (αMLT) are becoming more important. We apply a new method to improve the inference of stellar parameters for a sample of Kepler dwarfs and subgiants across a narrow mass range (0.8 < M < 1.2 M☉). In this method, we include a statistical treatment of Y and the αMLT. We develop a hierarchical Bayesian model to encode information about the distribution of Y and αMLT in the population, fitting a linear helium enrichment law including an intrinsic spread around this relation and normal distribution in αMLT. We test various levels of pooling parameters, with and without solar data as a calibrator. When including the Sun as a star, we find the gradient for the enrichment law, ΔY/ΔZ = 1.05+0.28–0.25 and the mean αMLT in the population, µα=1.90+0.10–0.09. While accounting for the uncertainty in Y and αMLT, we are still able to report statistical uncertainties of 2.5 per cent in mass, 1.2 per cent in radius, and 12 per cent in age. Our method can also be applied to larger samples that will lead to improved constraints on both the population level inference and the star-by-star fundamental parameters.

Abstract Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): asteroseismology - stars: fundamental parameters - stars: statistics

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 - 2026 		#notes
1 TYC 3544-1740-1 * 18 46 08.2027895928 +47 29 58.033176828   11.94 11.20     G6V 18 0
2 TYC 3126-596-1 Er* 18 46 34.6265527224 +42 45 33.541917408   12.128 11.543 11.356   G8IV-V 23 0
3 TYC 3544-2625-1 * 18 53 43.9615346736 +47 24 30.710336796   11.54 11.06     F8V 24 0
4 TYC 3123-1218-1 * 18 54 53.2378646880 +40 29 30.706382184   11.37 10.68     G2V 20 0
5 TYC 3123-1088-1 PM* 18 54 55.8843889776 +40 46 31.216294848   10.84 10.15     G3V 36 0
6 TYC 3541-870-1 * 18 58 39.8600494656 +45 47 47.579298000   11.89 11.26     F6IV 20 0
7 TYC 3541-246-1 * 18 59 08.0156533176 +45 40 56.186662080   11.59 10.74     G5V 19 0
8 HD 176693 Er* 18 59 08.6844743448 +48 25 23.600359776   9.34 8.83 8.996   F8V 148 0
9 TYC 3131-1998-1 * 18 59 13.4435523024 +43 53 42.672420096   11.34 10.76     G5V 21 0
10 TYC 3541-1003-1 * 18 59 50.3179594176 +46 35 14.828983116   11.92 11.34     K0IV-V 22 0
11 TYC 3541-728-1 * 19 00 23.9366101584 +45 19 04.590482592   12.15 11.35     F6IV 19 0
12 TYC 3541-58-1 * 19 00 50.8092858288 +46 01 16.927001436   11.88 11.31     G2V 21 0
13 BD+39 3610 PM* 19 01 08.6287588872 +39 29 52.805925024   10.58 10.09     F8V 33 0
14 TYC 3124-598-1 SB* 19 01 26.0208973368 +39 33 55.062754740   11.58 10.90     G8IV 22 0
15 TYC 3541-2345-1 Em* 19 02 09.8972932896 +45 16 39.357745608   10.90 10.21     G3V 57 0
16 TYC 3132-1655-1 SB* 19 05 08.7938975064 +44 48 31.106176632   11.82 11.63     ~ 23 0
17 KOI-4260 * 19 05 35.0044225128 +43 04 32.828477412   12.15 11.49     G0V 30 0
18 BD+38 3428 PM* 19 05 45.2617733112 +38 31 22.560830328   9.77 9.22     F9IV-V 78 0
19 TYC 3541-2887-1 * 19 06 37.3045133448 +45 35 45.849536772   11.78 11.33     ~ 16 0
20 TYC 3124-2460-1 * 19 06 45.1879169376 +40 13 59.397174372   12.38 11.56     G2V 22 0
21 BD+42 3247 SB* 19 06 58.3280630808 +42 26 08.260897020   10.32 9.75     G0.5IV 81 0
22 TYC 3128-1887-1 PM* 19 07 16.9236395352 +42 18 44.491033584   12.20 11.63     G5V 17 0
23 KOI-3168 Er* 19 09 15.5673202632 +39 32 17.487606444   11.248 10.63 10.443   ~ 49 0
24 TYC 3546-576-1 PM* 19 09 47.1668904504 +48 32 46.071534516   11.16 10.33     G8V 15 0
25 TYC 3129-2855-1 * 19 11 06.1656034848 +42 02 43.678277700   11.99 11.40     G3V 19 0
26 BD+38 3470 SB* 19 11 51.0573317544 +38 23 43.950969240   9.95 9.49     G0IV 27 0
27 TYC 3121-1848-1 SB* 19 11 58.1867303952 +39 02 13.468518060   11.55 10.86     ~ 22 0
28 TYC 3129-1587-1 PM* 19 12 02.2414844760 +42 40 18.811066440   11.49 10.84     ~ 40 0
29 TYC 3121-559-1 Er* 19 12 16.6298175336 +38 49 03.612586404   10.35 9.75 9.675   G0 50 0
30 TYC 3129-3292-1 * 19 15 08.0773876584 +41 17 55.520968020   11.59 11.00     G8V 40 0
31 HD 181207 PM* 19 17 46.3565007888 +41 24 36.838219932   9.06 8.47     F9IV-V 105 0
32 TYC 3125-3591-1 * 19 18 12.9128861928 +39 33 55.803331008   12.10 11.14     ~ 18 0
33 BD+44 3101 Em* 19 18 33.2045067096 +44 24 16.268768568   11.06 10.37     G2V 54 0
34 TYC 3121-846-1 * 19 19 02.4614262264 +38 34 30.945446076   12.24 11.42     ~ 17 0
35 TYC 3547-813-1 PM* 19 19 41.7246298584 +48 26 09.886882848   11.85 11.05     G3V 23 0
36 TYC 3551-681-1 * 19 22 32.6878857864 +49 02 15.490524264   12.58 12.61     G4V 21 0
37 TYC 3547-1671-1 Em* 19 22 52.3900197576 +48 32 27.075915168   11.00 10.44     G0V 21 0
38 TYC 3547-1673-1 * 19 23 29.6057946144 +48 06 52.883053308   11.06 10.45     F9V 23 0
39 BD+43 3228 PM* 19 23 56.4112114464 +43 18 52.537486464   10.830 10.170 10.035   G0V 72 0
40 BD+41 3338 Em* 19 24 11.1933479232 +42 03 09.726975180   9.97 9.19     G8IV-V 85 0
41 TYC 3551-1949-1 Em* 19 25 05.2695383088 +49 19 37.490969496   11.07 10.52     F8V 17 0
42 TYC 3547-478-1 PM* 19 26 29.0625819360 +48 42 43.526835576   11.66 10.95     G5IV-V 41 0
43 TYC 3134-54-1 SB* 19 27 17.9806227048 +38 06 47.526326028   11.48 10.75     G4V 27 0
44 TYC 3551-149-1 Em* 19 27 20.4900952416 +48 57 12.010523580   10.59 9.85     G5IV 59 0
45 TYC 3138-1861-1 * 19 27 33.9265148760 +39 34 51.727759320   11.82 11.49     G0.5V 20 0
46 TYC 3547-2224-1 SB* 19 28 47.3084183208 +48 02 15.458627544   12.59 12.22     G3Va 22 0
47 TYC 3551-1158-1 * 19 29 01.8626404752 +49 51 54.860504292   11.39 10.83     G2V 30 0
48 TYC 3143-1733-1 * 19 30 08.9195925168 +42 09 14.147161956   12.12 11.40     G2V 28 0
49 HD 184401 Em* 19 32 14.5949892072 +45 18 38.308886100   9.63 8.95     G4V 69 0
50 TYC 3135-138-1 * 19 32 17.6543396592 +37 42 59.269412340   11.39 10.74     F9V 17 0
51 TYC 3135-712-1 * 19 32 20.4425184720 +38 20 30.178396212   10.98 10.35     G9IV 25 0
52 TYC 3143-826-1 PM* 19 33 03.9573361248 +41 23 33.350550864   10.97 10.46     ~ 17 0
53 TYC 3135-603-1 PM* 19 33 28.9217538744 +39 15 46.817208360   12.23 11.35     G0 18 0
54 TYC 3560-2509-1 Em* 19 33 52.7745159792 +47 02 44.511974340   10.76 10.21     G0V 69 0
55 TYC 3556-2991-1 * 19 34 11.9316526200 +45 21 41.419581948   11.72 11.29     G1.5IV-V 22 0
56 BD+46 2726 Er* 19 34 43.0022454096 +46 51 09.938179044   10.36 9.64 9.438   K0V 156 0
57 TYC 3139-649-1 * 19 34 54.6430379952 +39 54 26.410411260   12.20 11.29     ~ 21 0
58 BD+41 3406 PM* 19 35 05.9678282136 +41 25 10.477321536   10.810 10.150 10.027   ~ 20 0
59 TYC 3135-624-1 PM* 19 36 48.8136243480 +38 42 56.789855496   10.35 9.55     G5IV 88 0
60 TYC 3556-909-1 PM* 19 37 56.6968217208 +45 57 52.273038852   11.31 10.78 10.643   F6V 63 0
61 TYC 3147-303-1 * 19 38 04.3900416288 +44 48 54.917347968   11.41 10.81     ~ 20 0
62 TYC 3139-650-1 PM* 19 38 33.2876183736 +40 42 22.891460004   11.68 11.28     F6IV 21 0
63 TYC 3560-3006-1 * 19 39 15.4227321312 +47 14 54.427800084   11.26 10.62     G2V 26 0
64 BD+38 3698 * 19 39 52.1727586272 +39 02 51.584522244   11.16 10.55     G0V 22 0
65 TYC 3148-2230-1 PM* 19 40 03.3591350928 +43 59 53.115201348   12.36 11.68     F8V 19 0
66 TYC 3568-986-1 * 19 40 16.9574000616 +50 54 13.429444896   11.61 11.10     F7IV 23 0
67 TYC 3556-3445-1 SB* 19 40 21.2108930904 +45 29 20.963746392   10.48 9.91     G3V 87 0
68 TYC 3568-959-1 Em* 19 41 00.3007494768 +50 41 41.466858288   11.19 10.54     F6IV 24 0
69 TYC 3136-901-1 PM* 19 41 03.2480975568 +38 44 45.521253384   11.65 11.01     ~ 22 0
70 TYC 3144-1086-1 * 19 42 44.8390836432 +42 55 18.999860520   12.57 11.54     ~ 15 0
71 KOI-364 Er* 19 43 29.3535442392 +42 52 52.083279732   10.678 10.244 10.005   G2.5IVa 77 0
72 TYC 3557-496-1 PM* 19 45 21.3062158656 +46 49 29.712192096   11.85 11.32     G2V 19 0
73 TYC 3561-1519-1 * 19 46 55.3943724336 +47 34 45.374828988   12.12 11.57     G5V 17 0
74 TYC 3148-170-1 * 19 47 51.2070965328 +44 36 51.711051132   12.03 11.28     ~ 17 0
75 TYC 3148-352-1 * 19 48 30.3666909168 +43 54 05.116767372   12.23 11.37     ~ 19 0
76 BD+42 3478 * 19 48 57.0112272360 +42 58 31.183454676   11.64 11.05     F8V 25 0
77 TYC 3149-1216-1 * 19 54 04.5351377928 +44 17 30.500354544   11.65 10.97     G2V 17 0
78 HD 226597 * 19 55 29.1893092344 +41 34 59.773095516   9.338 8.92     F2 24 0
79 TYC 3149-211-1 PM* 19 56 55.1349099480 +44 56 15.349717788   11.73 11.08     G0 22 0
80 HD 190166 PM* 20 01 51.4248305136 +44 21 14.147515008   10.13 9.581 9.523   F8V 69 0
81 TYC 3558-1714-1 * 20 03 12.6439141416 +45 26 23.197785108   11.96 11.10     ~ 13 0

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