2021A&A...650A.151G

Query : 2021A&A...650A.151G

2021A&A...650A.151G - Astronomy and Astrophysics, volume 650A151-151 (2021/6-1)

A homogeneous spectroscopic analysis of a Kepler legacy sample of dwarfs for gravity-mode asteroseismology.

GEBRUERS S., STRAUMIT I., TKACHENKO A., MOMBARG J.S.G., PEDERSEN M.G., VAN REETH T., LI G., LAMPENS P., ESCORZA A., BOWMAN D.M., DE CAT P., VERMEYLEN L., BODENSTEINER J., RIX H.-W. and AERTS C.

Abstract (from CDS):


Context. Asteroseismic modelling of the internal structure of main-sequence stars born with a convective core has so far been based on homogeneous analyses of space photometric Kepler light curves of four years in duration, to which most often incomplete inhomogeneously-deduced spectroscopic information was added to break degeneracies.
Aims. Our goal is twofold: (1) to compose an optimal sample of gravity-mode pulsators observed by the Kepler space telescope for joint asteroseismic and spectroscopic stellar modelling, and (2) to provide spectroscopic parameters for its members, deduced in a homogeneous way.
Methods. We assembled HERMES high-resolution optical spectroscopy at the 1.2m Mercator telescope for 111 dwarfs, whose Kepler light curves allowed for the determination of their near-core rotation rates. Our spectroscopic information offers additional observational input to also model the envelope layers of these non-radially pulsating dwarfs.
Results. We determined stellar parameters and surface abundances from atmospheric analysis with spectrum normalisation based on a new machine-learning tool. Our results suggest a systematic overestimation of metallicity ([M/H]) in the literature for the studied F-type dwarfs, presumably due to normalisation limitations caused by the dense line spectrum of these rotating stars. CNO surface abundances were found to be uncorrelated with the rotation properties of the F-type stars. For the B-type stars, we find a hint of deep mixing from C and O abundance ratios; N abundance uncertainties are too great to reveal a correlation of N with the rotation of the stars.
Conclusions. Our spectroscopic stellar parameters and abundance determinations allow for the future joint spectroscopic, astrometric (Gaia), and asteroseismic modelling of this legacy sample of gravity-mode pulsators, with the aim of improving our understanding of transport processes in the core-hydrogen burning phase of stellar evolution.

Abstract Copyright: © ESO 2021

Journal keyword(s): asteroseismology - stars: variables: general - stars: oscillations - stars: fundamental parameters - stars: abundances - techniques: spectroscopic

Simbad objects: 131

goto Full paper

goto View the references in ADS

Number of rows : 131
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 HD 21071 Pu* 03 25 57.3820460520 +49 07 14.729885580 5.53 6.02 6.09     B7V 180 0
2 * pi.03 Ori PM* 04 49 50.4112051485 +06 57 40.600622266 3.620 3.630 3.190 2.77 2.51 F6V 601 0
3 * eta UMa PM* 13 47 32.43776 +49 18 47.7602 0.99 1.67 1.86 1.98 2.16 B3V 630 0
4 BD+47 2677 gD* 18 41 04.3495591056 +47 26 26.615010840   9.68 9.35     A5 8 0
5 TYC 3540-1251-1 gD* 18 45 59.4908800752 +46 30 43.220586924   11.32 10.95     Am 20 0
6 2MASS J18465745+4316153 gD* 18 46 57.4608655344 +43 16 15.261625956           ~ 18 0
7 TYC 3130-497-1 gD* 18 48 35.0495052480 +43 23 21.678146484   10.20 9.91     F2.5V 24 0
8 TYC 3130-1355-1 gD* 18 49 11.9650486872 +43 47 53.499344244   12.19 11.91     F1V 18 0
9 TYC 3544-2289-1 gD* 18 53 47.1918032688 +47 23 34.927339524   12.59 12.30     F1V 11 0
10 UCAC4 653-068746 Pu* 18 56 08.3678639160 +40 27 12.883652640   13.541 12.973 12.847   ~ 8 0
11 HD 176562 Pu* 18 59 00.2110724352 +41 15 55.311048216   9.05 9.12   9.226 B9 23 0
12 TYC 3119-1304-1 * 18 59 38.2262986704 +38 43 20.598033144   11.27 10.82     ~ 10 0
13 TYC 3541-1172-1 gD* 19 02 56.9341368432 +45 11 42.108886932   11.19 10.75     ~ 14 0
14 UCAC4 700-065436 SB* 19 05 57.9247248120 +49 56 33.542968092   12.647 12.155 12.114   kA7hF0mF0 17 0
15 TYC 3128-1500-1 Pu* 19 08 39.9879531936 +42 27 11.752221924   11.33 10.91     F4V 17 0
16 TYC 3133-1549-1 gD* 19 10 01.6225348488 +44 22 29.820714204   10.68 10.44     F2V 14 0
17 TYC 3129-3189-1 gD* 19 10 05.7168174768 +42 09 54.589627156   12.03 11.72     ~ 16 0
18 TYC 3129-2494-1 * 19 10 27.5730874656 +42 14 29.733271368   11.36 11.05     ~ 9 0
19 HD 179506 gD* 19 10 57.7607883552 +41 46 33.421683180   7.87 7.91     B8VsHestr(B6) 44 0
20 TYC 3133-1922-1 Pu* 19 11 09.7540668456 +43 59 57.141140640   11.75 11.71     B6III 14 0
21 BD+38 3468 gD* 19 11 29.3017261968 +39 04 42.980540016   10.28 9.87     F2Vs 15 0
22 TYC 3550-369-1 gD* 19 11 29.4137959896 +50 14 29.689592532   11.82 11.72     F1V 24 0
23 TYC 3121-1389-1 Er* 19 11 38.5335463752 +38 20 43.797979752   12.60 13.05     kA8hF2mF2 12 0
24 TYC 3125-1185-1 gD* 19 12 18.5346248400 +40 52 39.730925676   10.24 9.88     F2Vswkmet(A7) 22 0
25 TYC 3125-2566-1 Pu* 19 12 23.3843371344 +40 42 14.006113488   10.73 10.42     ~ 14 0
26 TYC 3129-2589-1 gD* 19 12 39.7900204656 +42 38 40.436771316   10.66 10.43     F1V 13 0
27 TYC 3121-669-1 Pu* 19 13 06.8195019240 +38 59 20.517436716   10.66 10.79     B3V 16 0
28 BD+38 3482 gD* 19 13 07.7560119048 +38 27 34.321871412   10.35 10.06     F0.5Vs 14 0
29 BD+42 3281 gD* 19 13 42.0647011272 +42 31 13.040195484   11.13 10.82     F1V 23 0
30 TYC 3554-1916-1 gD* 19 13 49.2065980392 +51 46 48.427834332   11.83 11.64     F1V 18 0
31 TYC 3129-2465-1 Pu* 19 13 57.9409700304 +43 04 57.941776668   12.59 12.18     F5Vaw 19 0
32 TYC 3542-291-1 Pu* 19 14 04.5166666008 +45 39 09.016228116   12.26 11.82     F2IV 16 0
33 TYC 3121-50-1 Er* 19 18 31.3889829264 +39 22 05.786956596   11.21 10.72     F0III-IV 8 0
34 TYC 3133-225-1 ** 19 18 45.137232 +43 24 01.71900   12.429 11.947 12.091   F5V 12 0
35 2MASS J19185013+4837138 gD* 19 18 50.1442224456 +48 37 13.888752924           F0V 20 0
36 UCAC4 699-065701 Er* 19 19 05.0797250328 +49 38 04.061059800   11.908 11.675 11.764   ~ 5 0
37 HD 181654 gD* 19 19 27.2126905392 +41 13 25.536001296   8.52 8.16     F1IV-V 25 0
38 TYC 3134-1466-1 * 19 20 09.3149687640 +38 02 54.610233432   11.460 11.041 10.970   ~ 3 0
39 HD 181985 dS* 19 20 38.2162608984 +43 29 03.703881444   9.81 9.54     F1VmF0 23 0
40 TYC 3555-240-1 Pu* 19 20 49.1243557176 +51 20 09.214971972   12.60 11.61     ~ 8 0
41 2MASS J19220605+4740493 gD* 19 22 06.0490438416 +47 40 49.298206836           F1V 18 0
42 TYC 3551-405-1 gD* 19 22 45.4021467288 +49 04 48.010155528   12.26 11.67     F1V 19 0
43 2MASS J19230559+3848519 Pu* 19 23 05.5992167112 +38 48 51.894935604           ~ 10 0
44 TYC 3134-1158-1 Er* 19 23 33.3122029575 +37 59 00.564770971   11.91 11.74     ~ 17 0
45 TYC 3142-733-1 gD* 19 24 03.2569416312 +41 56 54.401193024   10.76 10.38     F1IV-Vs 22 0
46 TYC 3138-167-1 Pu* 19 24 11.0703856512 +41 00 41.571716832   12.24 11.73     F1V 22 0
47 2MASS J19251682+4423467 gD* 19 25 16.8181718232 +44 23 46.715917920           F1V 18 0
48 BD+37 3452 ** 19 25 17.676792 +37 49 25.21128   10.500 10.160 10.064   F0 8 0
49 HD 234893 V* 19 25 57.5499530016 +50 54 03.384749052   9.23 9.33     B5.5IV-V 28 0
50 TYC 3547-2352-1 gD* 19 27 23.9538517248 +47 41 49.432573284   11.27 11.10     ~ 8 0
51 2MASS J19280661+4215296 dS* 19 28 06.6206993040 +42 15 29.622539340           ~ 12 0
52 BD+38 3609 * 19 29 10.3529434200 +38 43 42.972928176   9.88 9.47     F2V 11 0
53 TYC 3547-1358-1 Pu* 19 29 11.9215359864 +47 44 43.041300324   11.43 11.48     B2III 18 0
54 TYC 3138-1355-1 gD* 19 29 53.3154503088 +40 37 26.252230620   10.40 10.00     ~ 9 0
55 2MASS J19301049+4920280 gD* 19 30 10.5082520640 +49 20 28.074825204           F2IV 16 0
56 TYC 3556-768-1 dS* 19 30 25.6174826568 +46 22 52.185473688   11.31 10.98     A7III 21 0
57 BD+42 3365 gD* 19 30 35.2323316632 +42 58 10.667202312   9.41 9.15     F0IV 24 0
58 BD+38 3623 gD* 19 30 35.7783151344 +38 35 16.641418560   10.28 9.91     F1V 23 0
59 TYC 3564-1819-1 gD* 19 30 41.5445241960 +49 39 10.624802724   10.81 10.44     A7III 17 0
60 TYC 3143-1491-1 Pu* 19 30 54.6974297376 +42 15 20.344875408   9.87 9.94     B6III 23 0
61 TYC 3139-428-1 gD* 19 31 03.4961644056 +40 56 13.936587792   12.25 11.85     F1V 19 0
62 TYC 3135-115-1 bC* 19 31 06.7281742056 +38 19 41.718615204   10.07 10.15     B2V 25 0
63 TYC 3135-265-1 dS* 19 31 55.2386661240 +38 22 03.787404096   10.78 10.45     A9III 5 0
64 TYC 3135-203-1 dS* 19 32 44.5935712752 +37 35 36.186528768   10.19 10.02     kA5hA4 V 13 0
65 TYC 3139-1513-1 gD* 19 32 50.4502828824 +39 46 37.846291368   11.24 10.68     ~ 7 0
66 2MASS J19325124+4228465 gD* 19 32 51.2385295320 +42 28 46.505971020           F0IV 20 0
67 TYC 3139-309-1 Er* 19 33 22.6271794872 +39 37 01.821993888   11.30 10.80     ~ 8 0
68 TYC 3564-346-1 Pu* 19 34 22.5640094208 +50 15 46.286368848   11.62 11.14     F1V 16 0
69 TYC 3135-619-1 bC* 19 35 05.8089272592 +38 52 50.074067892   9.95 10.00     B2.5V 24 0
70 HD 184939 SB* 19 35 07.8332799936 +40 01 28.891242084   8.79 8.86     A2 29 0
71 BD+39 3836 gD* 19 35 44.8203589224 +40 07 22.854077724   10.12 9.84     F0.5V 14 0
72 UCAC4 683-072334 Be* 19 35 52.6165617000 +46 27 25.531894188   13.078 12.988 13.040   B2.5IV 15 0
73 BD+41 3411 ** 19 36 21.861552 +41 38 28.33224   10.180 9.869 9.845   kA3hA7mA7VAm: 15 0
74 TYC 3560-2433-1 dS* 19 36 27.3036735096 +47 05 02.149341756   12.40 11.65     F6II 62 0
75 BD+41 3413 ** 19 36 29.829960 +41 24 08.63100   9.80 9.32 9.31   F5 17 0
76 TYC 3564-16-1 Pu* 19 37 03.2104066656 +50 30 20.417184432   10.64 10.23     ~ 25 0
77 UCAC4 683-072646 gD* 19 37 18.8438989128 +46 24 06.372553464   13.700 13.163 13.043   ~ 12 0
78 BD+43 3310 Pu* 19 37 29.7688619736 +43 24 57.369736800   10.32 10.28     B9IV 62 0
79 TYC 3139-499-1 Pu* 19 38 36.9200606496 +39 50 26.084419764   12.05 11.69     ~ 12 0
80 Cl* NGC 6811 SAN 256 dS* 19 38 41.7039727223 +46 07 21.621989426   13.20 12.854 12.830   kA2hF0mA9 54 0
81 TYC 3139-1321-1 gD* 19 39 19.0310201352 +39 55 10.670435976   12.74 12.63     ~ 15 0
82 TYC 3556-3387-1 Pu* 19 39 19.2286090872 +46 14 57.464998476   12.06 11.812   11.42 ~ 16 0
83 TYC 3564-2927-1 gD* 19 39 57.1045031568 +50 13 32.046786192   10.16 9.86     F1V 19 0
84 TYC 3568-996-1 gD* 19 40 37.2332594664 +50 38 31.517646684   11.07 10.74     F5Vaw 10 0
85 BD+44 3210 Pu* 19 40 47.6250694104 +44 20 11.860432548   11.31 11.00     G0 21 0
86 TYC 3140-2068-1 gD* 19 40 52.4910856392 +41 06 34.252006428   11.27 10.84     F1V 11 0
87 TYC 3136-312-1 Pu* 19 41 20.0015659344 +38 56 43.609757244   11.09 11.17     B3III 20 0
88 TYC 3569-134-1 dS* 19 42 06.9582436392 +51 06 12.167631936   12.12 11.58     ~ 9 0
89 TYC 3148-1126-1 gD* 19 42 09.2906087712 +43 23 37.487303268   11.17 10.94     A5IV–V 10 0
90 HD 225447 gD* 19 42 12.6333322008 +40 17 45.907870236   9.286 9.173     A3IV-V 31 0
91 HD 225479 dS* 19 42 38.3938128600 +39 33 40.365258696   10.56 10.27     A9Vwkmet(A5) 27 0
92 TYC 3140-1590-1 gD* 19 42 43.5450213000 +40 15 00.654172164   11.98 11.56     ~ 15 0
93 HD 186567 * 19 42 48.8430567072 +50 21 39.806399160   9.07 9.21   9.191 F 33 0
94 TYC 3565-1474-1 gD* 19 43 27.8459534976 +49 51 25.396514964   11.96 11.73     F2V 19 0
95 TYC 3561-2050-1 dS* 19 44 02.7214460976 +47 21 16.877904588   10.98 11.21     B3V 17 0
96 TYC 3144-1656-1 gD* 19 44 11.6403789960 +42 45 09.503269632   10.91 10.46     F5IV 11 0
97 TYC 3557-1023-1 gD* 19 45 24.0389158536 +46 52 19.571243124   10.40 10.11     ~ 12 0
98 TYC 3144-787-1 gD* 19 45 51.3642186456 +41 37 53.924474532   11.35 11.15     F1V 14 0
99 HD 187035 Pu* 19 45 52.1256208152 +44 55 07.116092076   8.79 8.83     B7III 28 0
100 TYC 3565-98-1 dS* 19 46 02.9590116312 +49 07 59.601005724   10.52 10.62     B3V 26 0
101 TYC 3144-1294-1 gD* 19 46 41.5861162776 +42 59 35.301181776   12.58 12.46     F1V 23 0
102 HD 225808 gD* 19 47 12.5075196816 +40 28 02.432697240   11.04 10.71     F2V 17 0
103 TYC 3561-1295-1 Em* 19 48 02.8305580656 +46 53 44.563876224   10.51 10.61     B2IV 18 0
104 BD+43 3370 gD* 19 48 33.1062545928 +43 27 04.248525276   10.01 9.81     A6IV 18 0
105 TYC 3144-646-1 gD* 19 48 33.7195391280 +41 49 49.233521964   10.78 10.83     B3V 29 0
106 BD+43 3371 dS* 19 48 46.9711348440 +44 21 20.901706884   11.03 10.96     B2V 28 0
107 BD+45 2978 gD* 19 49 21.8525440152 +45 56 03.865558668   9.56 9.21     F2V 18 0
108 TYC 3557-200-1 gD* 19 49 34.5542468208 +46 04 20.860773708   13.74 11.83     ~ 18 0
109 TYC 3148-597-1 dS* 19 49 50.4895397688 +43 46 28.537465368   11.68 11.35     F0IV 13 0
110 BD+49 3115 Pu* 19 49 50.4959273376 +50 00 57.364523352   10.62 10.21     F0 18 0
111 TYC 3561-399-1 gD* 19 50 06.6366797832 +47 17 06.651659832   12.35 12.53     ~ 12 0
112 HD 226162 Er* 19 50 59.5167869904 +41 19 54.387735672   10.92 10.49     ~ 8 0
113 2MASS J19511230+4501340 Pu* 19 51 12.2977983312 +45 01 34.138410492           F0IV 18 0
114 TYC 3145-759-1 gD* 19 51 12.9788913240 +42 56 03.393880980   11.20 10.77     ~ 6 0
115 TYC 3562-121-1 Pu* 19 52 37.5094311336 +48 38 43.971786744   10.42 10.02     F5IV 17 0
116 HD 226394 Er* 19 53 19.7962651752 +40 51 21.847007736   11.35 10.90     ~ 8 0
117 TYC 3145-2809-1 dS* 19 53 37.8290298336 +41 49 05.083652676   13.01 12.14     F0III-IV 17 0
118 HD 188538 dS* 19 53 45.5746985808 +45 13 09.285444840   9.82 9.48     A7IV 22 0
119 HD 188565 dS* 19 53 51.7230650664 +44 43 09.469359732   10.35 9.92     F0 19 0
120 HD 226446 gD* 19 54 04.2405250560 +41 48 31.021976628   10.36 9.96     F1V 21 0
121 2MASS J19544900+4148135 gD* 19 54 48.9986085624 +41 48 13.570741512           ~ 18 0
122 2MASS J19565240+4415531 * 19 56 52.4071916328 +44 15 53.186895972           ~ 8 0
123 TYC 3149-534-1 gD* 19 57 04.1339790216 +43 55 31.690180056   11.46 10.99     F1V 14 0
124 HD 226766 dS* 19 57 09.9096799008 +40 22 50.570615424   9.51 9.28     kA1hA5mA7Sr 28 0
125 HD 189637 Em* 19 59 10.1846532552 +44 51 44.816244336   10.99 10.86     B2.5V 36 0
126 TYC 3149-307-1 gD* 19 59 54.1894343736 +44 42 18.560402604   11.26 10.90     F0IV 12 0
127 TYC 3558-1208-1 gD* 20 00 12.8625159480 +46 03 33.098696964   11.00 10.67     F5V 10 0
128 LS III +43 1 dS* 20 00 17.9895268056 +43 49 55.815794616   11.70 11.75     B2III 30 0
129 HD 190254 bC* 20 02 13.3712854440 +44 26 46.860076968 8.15 8.64 8.68     B4.5IV 34 0
130 KOI-6175 gD* 20 04 09.3034057056 +44 04 15.978763164 11.055 10.977 10.639 10.415 10.15 F1V 42 1
131 * iot Psc PM* 23 39 57.0406036160 +05 37 34.653911951 4.640 4.620 4.120 3.68 3.37 F7V 641 0

To bookmark this query, right click on this link: simbad:objects in 2021A&A...650A.151G and select 'bookmark this link' or equivalent in the popup menu