2021A&A...655A..29J

Query : 2021A&A...655A..29J

2021A&A...655A..29J - Astronomy and Astrophysics, volume 655A29-29 (2021/11-1)

One size does not fit all: Evidence for a range of mixing efficiencies in stellar evolution calculations.

JOHNSTON C.

Abstract (from CDS):


Context. Internal chemical mixing in intermediate- and high-mass stars represents an immense uncertainty in stellar evolution models. In addition to extending the main sequence lifetime, chemical mixing also appreciably increases the mass of the stellar core. Several studies have made attempts to calibrate the efficiency of different convective boundary mixing mechanisms, with sometimes seemingly conflicting results.
Aims. We aim to demonstrate that stellar models regularly under-predict the masses of convective stellar cores.
Methods. We gather convective core mass and fractional core hydrogen content inferences from numerous independent binary and asteroseismic studies, and compare them to stellar evolution models computed with the MESA stellar evolution code.
Results. We demonstrate that core mass inferences from the literature are ubiquitously more massive than predicted by stellar evolution models with no or with little convective boundary mixing.
Conclusions. Independent of the form of internal mixing, stellar models require an efficient mixing mechanism that produces more massive cores throughout the main sequence in order to reproduce high-precision observations. This has implications for the post-main sequence evolution of all stars that have a well-developed convective core on the main sequence.

Abstract Copyright: © ESO 2021

Journal keyword(s): stars: evolution - stars: interiors - binaries: eclipsing - stars: oscillations - asteroseismology

Simbad objects: 94

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Number of rows : 94
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 V* V621 Per EB* 02 22 09.7108878600 +57 07 02.305907292 9.14 9.68 9.4000   7.9369 B1.5I 85 0
2 HD 43317 Pu* 06 15 47.0134228488 +04 17 01.095049500 5.82 6.456 6.614     B3IV 129 0
3 * bet CMa bC* 06 22 41.9853527 -17 57 21.307352 0.77 1.73 1.97 2.11 2.35 B1II-III 748 0
4 V* V578 Mon Y*O 06 32 00.6076651296 +04 52 40.886334120 8.01 8.72 8.55 8.09 8.28 B0V+B1V 127 0
5 CPD-59 2628 SB* 10 45 08.2244134080 -59 40 49.413975060 8.791 9.571 9.460 9.87 9.219 O9.5V(n)+B0.5V(n) 88 0
6 V* V346 Cen EB* 11 42 49.6742604288 -62 26 05.401617756 7.64 9.58 9.57 9.28 8.471 B1/3II/III 99 0
7 * bet Cru bC* 12 47 43.26877 -59 41 19.5792 0.03 1.02 1.25 1.38 1.64 B1IV 360 1
8 V* V1032 Sco bC* 16 53 58.6055666592 -41 48 41.790648132 9.327 9.920 9.767 9.811 9.445 B2V 42 0
9 V* U Oph SB* 17 16 31.7137908168 +01 12 37.998551304   5.941 5.921     B3V 388 1
10 V* V2052 Oph bC* 17 56 18.4001168880 +00 40 13.273317228 5.28 5.874 5.820     B3III 222 0
11 HD 165246 SB* 18 06 04.6792554840 -24 11 43.890335448 6.90 7.70 7.60 8.77   O8V(n) 93 0
12 TYC 3540-1251-1 gD* 18 45 59.4908800752 +46 30 43.220586924   11.32 10.95     Am 20 0
13 2MASS J18465745+4316153 gD* 18 46 57.4608655344 +43 16 15.261625956           ~ 18 0
14 TYC 3130-1355-1 gD* 18 49 11.9650486872 +43 47 53.499344244   12.19 11.91     F1V 18 0
15 HD 176153 * 18 56 36.6514583496 +47 39 23.133492756   9.20 8.68     F9IV-V 95 0
16 HD 176562 Pu* 18 59 00.2110724352 +41 15 55.311048216   9.05 9.12   9.226 B9 23 0
17 BD+40 3567 * 19 01 45.0508649856 +41 04 50.082446568   9.77 9.27     G0.5IV 43 0
18 HD 177412 SB* 19 02 39.4175915928 +43 07 02.940702096   8.38 7.86     F6IV 76 0
19 UCAC4 700-065436 SB* 19 05 57.9247248120 +49 56 33.542968092   12.647 12.155 12.114   kA7hF0mF0 17 0
20 TYC 3128-1500-1 Pu* 19 08 39.9879531936 +42 27 11.752221924   11.33 10.91     F4V 17 0
21 TYC 3129-3189-1 gD* 19 10 05.7168174768 +42 09 54.589627156   12.03 11.72     ~ 16 0
22 HD 179506 gD* 19 10 57.7607883552 +41 46 33.421683180   7.87 7.91     B8VsHestr(B6) 44 0
23 TYC 3550-369-1 gD* 19 11 29.4137959896 +50 14 29.689592532   11.82 11.72     F1V 24 0
24 2MASS J19120273+4742364 Em* 19 12 02.7395758512 +47 42 36.406192932           B8.3V 72 0
25 TYC 3125-2566-1 Pu* 19 12 23.3843371344 +40 42 14.006113488   10.73 10.42     ~ 14 0
26 BD+42 3281 gD* 19 13 42.0647011272 +42 31 13.040195484   11.13 10.82     F1V 23 0
27 TYC 3129-2465-1 Pu* 19 13 57.9409700304 +43 04 57.941776668   12.59 12.18     F5Vaw 19 0
28 HD 234856 Em* 19 17 45.8018919144 +50 28 48.274775580   9.87 9.32     F9IV-V 94 0
29 2MASS J19185013+4837138 gD* 19 18 50.1442224456 +48 37 13.888752924           F0V 20 0
30 BD+43 3221 Em* 19 20 47.9392965792 +44 09 18.751522032   10.03 9.50     F9IV-V 93 0
31 2MASS J19220605+4740493 gD* 19 22 06.0490438416 +47 40 49.298206836           F1V 18 0
32 TYC 3551-405-1 gD* 19 22 45.4021467288 +49 04 48.010155528   12.26 11.67     F1V 19 0
33 TYC 3134-1158-1 Er* 19 23 33.3122029575 +37 59 00.564770971   11.91 11.74     ~ 17 0
34 TYC 3138-167-1 Pu* 19 24 11.0703856512 +41 00 41.571716832   12.24 11.73     F1V 22 0
35 HD 182756 * 19 24 30.3488274144 +40 19 23.671912908   9.01 8.31     G1V 78 0
36 2MASS J19251682+4423467 gD* 19 25 16.8181718232 +44 23 46.715917920           F1V 18 0
37 2MASS J19253699+4523448 Pu* 19 25 36.9899720424 +45 23 44.902125744           ~ 17 0
38 HD 234893 V* 19 25 57.5499530016 +50 54 03.384749052   9.23 9.33     B5.5IV-V 28 0
39 HD 183298 PM* 19 26 22.0906256352 +50 59 14.334181836   8.71 8.16     G0.5IV 112 0
40 TYC 3547-1358-1 Pu* 19 29 11.9215359864 +47 44 43.041300324   11.43 11.48     B2III 18 0
41 2MASS J19301049+4920280 gD* 19 30 10.5082520640 +49 20 28.074825204           F2IV 16 0
42 BD+42 3365 gD* 19 30 35.2323316632 +42 58 10.667202312   9.41 9.15     F0IV 24 0
43 BD+38 3623 gD* 19 30 35.7783151344 +38 35 16.641418560   10.28 9.91     F1V 23 0
44 TYC 3143-1491-1 Pu* 19 30 54.6974297376 +42 15 20.344875408   9.87 9.94     B6III 23 0
45 TYC 3139-428-1 gD* 19 31 03.4961644056 +40 56 13.936587792   12.25 11.85     F1V 19 0
46 TYC 3135-115-1 bC* 19 31 06.7281742056 +38 19 41.718615204   10.07 10.15     B2V 25 0
47 2MASS J19325124+4228465 gD* 19 32 51.2385295320 +42 28 46.505971020           F0IV 20 0
48 TYC 3564-346-1 Pu* 19 34 22.5640094208 +50 15 46.286368848   11.62 11.14     F1V 16 0
49 TYC 3143-53-1 SB* 19 35 03.7372740120 +42 44 16.724850540   10.31 9.85     F8IV 83 0
50 HD 184939 SB* 19 35 07.8332799936 +40 01 28.891242084   8.79 8.86     A2 29 0
51 UCAC4 683-072334 Be* 19 35 52.6165617000 +46 27 25.531894188   13.078 12.988 13.040   B2.5IV 15 0
52 TYC 3560-2433-1 dS* 19 36 27.3036735096 +47 05 02.149341756   12.40 11.65     F6II 62 0
53 TYC 3564-16-1 Pu* 19 37 03.2104066656 +50 30 20.417184432   10.64 10.23     ~ 25 0
54 BD+43 3310 Pu* 19 37 29.7688619736 +43 24 57.369736800   10.32 10.28     B9IV 62 0
55 TYC 3135-416-1 * 19 38 10.6797868344 +38 31 00.667275996   10.20 9.72     F5IV-V 43 0
56 TYC 3139-1321-1 gD* 19 39 19.0310201352 +39 55 10.670435976   12.74 12.63     ~ 15 0
57 TYC 3556-3387-1 Pu* 19 39 19.2286090872 +46 14 57.464998476   12.06 11.812   11.42 ~ 16 0
58 TYC 3564-2927-1 gD* 19 39 57.1045031568 +50 13 32.046786192   10.16 9.86     F1V 19 0
59 TYC 3140-2401-1 Pu* 19 40 22.3422722928 +40 02 23.974979208   11.85 11.93     B9.5III 14 0
60 BD+44 3210 Pu* 19 40 47.6250694104 +44 20 11.860432548   11.31 11.00     G0 21 0
61 2MASS J19405445+3834503 Pu* 19 40 54.4541104248 +38 34 50.348300448           B6.5IV 21 0
62 TYC 3136-312-1 Pu* 19 41 20.0015659344 +38 56 43.609757244   11.09 11.17     B3III 20 0
63 TYC 3140-1590-1 gD* 19 42 43.5450213000 +40 15 00.654172164   11.98 11.56     ~ 15 0
64 HD 186567 * 19 42 48.8430567072 +50 21 39.806399160   9.07 9.21   9.191 F 33 0
65 LS II +39 2 Pu* 19 43 10.8208355736 +40 01 38.553642876   11.6       B 20 0
66 TYC 3565-1474-1 gD* 19 43 27.8459534976 +49 51 25.396514964   11.96 11.73     F2V 19 0
67 BD+43 3349 * 19 45 23.9642658792 +44 04 35.865815844   10.01 9.51     F6IV 53 0
68 HD 187035 Pu* 19 45 52.1256208152 +44 55 07.116092076   8.79 8.83     B7III 28 0
69 TYC 3565-98-1 dS* 19 46 02.9590116312 +49 07 59.601005724   10.52 10.62     B3V 26 0
70 TYC 3144-1294-1 gD* 19 46 41.5861162776 +42 59 35.301181776   12.58 12.46     F1V 23 0
71 TYC 3144-646-1 gD* 19 48 33.7195391280 +41 49 49.233521964   10.78 10.83     B3V 29 0
72 BD+43 3371 dS* 19 48 46.9711348440 +44 21 20.901706884   11.03 10.96     B2V 28 0
73 HD 187637 PM* 19 49 18.1388793264 +41 34 56.859084552       7.2   F8V 132 0
74 TYC 3557-200-1 gD* 19 49 34.5542468208 +46 04 20.860773708   13.74 11.83     ~ 18 0
75 BD+49 3115 Pu* 19 49 50.4959273376 +50 00 57.364523352   10.62 10.21     F0 18 0
76 V* V380 Cyg SB* 19 50 37.3267754400 +40 35 59.135141652 4.86 5.613 5.680     B1.1III+B2.5/3V: 305 0
77 2MASS J19511230+4501340 Pu* 19 51 12.2977983312 +45 01 34.138410492           F0IV 18 0
78 2MASS J19512834+4314063 Pu* 19 51 28.3404892368 +43 14 06.309266280           ~ 9 0
79 TYC 3562-121-1 Pu* 19 52 37.5094311336 +48 38 43.971786744   10.42 10.02     F5IV 17 0
80 HD 188565 dS* 19 53 51.7230650664 +44 43 09.469359732   10.35 9.92     F0 19 0
81 HD 226446 gD* 19 54 04.2405250560 +41 48 31.021976628   10.36 9.96     F1V 21 0
82 KOI-7238 EB* 19 54 22.1649249624 +46 41 25.923599016           F1V 36 0
83 2MASS J19542680+4411387 * 19 54 26.8009664040 +44 11 38.696099136           B2.5V 10 0
84 2MASS J19544900+4148135 gD* 19 54 48.9986085624 +41 48 13.570741512           ~ 18 0
85 HD 188819 * 19 54 54.1810396872 +47 08 42.949406328   9.12 8.66     F8IV 78 0
86 TYC 3141-1958-1 gD* 19 59 06.8819786112 +40 27 01.150759260   11.93 11.79     B3V 15 0
87 HD 189637 Em* 19 59 10.1846532552 +44 51 44.816244336   10.99 10.86     B2.5V 36 0
88 LS III +43 1 dS* 20 00 17.9895268056 +43 49 55.815794616   11.70 11.75     B2III 30 0
89 HD 190254 bC* 20 02 13.3712854440 +44 26 46.860076968 8.15 8.64 8.68     B4.5IV 34 0
90 V* V453 Cyg SB* 20 06 34.9661707872 +35 44 26.269865844 7.83 8.52 8.40     B0.4IV+B0.7IV 215 0
91 ** A 1426B * 20 19 38.4412768080 +38 20 08.460455100           ~ 1 0
92 V* V478 Cyg SB* 20 19 38.7476920032 +38 20 09.195280836   9.16 8.767     B0Vp 195 0
93 V* AH Cep SB* 22 47 52.9412851944 +65 03 43.795145556 6.53 7.10 6.88     B0.2V+B2V 227 0
94 HD 218066 Be* 23 04 02.2270838832 +63 23 48.722060508 7.50 7.97 7.6     B1.5Vn 290 0

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