2023ApJ...955..123S

Query : 2023ApJ...955..123S

2023ApJ...955..123S - Astrophys. J., 955, 123 (2023/October-1)

Variability of Magnetic Hot Stars from the TESS Observations.

SHEN D.-X., LI G., ABDUSAMATJAN I., FU J.-N., ZHU C.-H., YU J.-L., ZHANG Y., LU G.-L., ZHAI N.-N. and LIU J.-Z.

Abstract (from CDS):

Magnetic hot stars refer to stars that have effective temperatures approximately in the range from 7000-50,000 K, and with large-scale globally organized magnetic fields. These magnetic fields exhibit strengths ranging from tens of Gauss to tens of kilo-Gauss. They are key in understanding the effects caused by magnetic fields in the stellar evolution. However, there are only three magnetic hot stars studied via a combination of spectropolarimetric and asteroseismic modeling. Combined with Transiting Exoplanet Survey Satellite sectors 1-56 data sets, we provided a photometric variability and stochastic low-frequency (SLF) variability study of 118 magnetic hot stars. Nine new rotating variable stars are identified. Using the Bayesian Markov Chain Monte Carlo framework, we fitted the morphologies of SLF variability for magnetic hot stars. Our analysis reveals that the magnetic hot stars in our sample have γ < 5.5 with the vast majority having 1 ≤ γ ≤ 3. The νchar is primarily in the ranges of 0 day–1 < νchar < 6.3 day–1. The amplitude of SLF variability, log α0, shows a dominant distribution ranging from 0.8-3. No significant correlations are observed between the luminosity and fitting parameters, suggesting no clear dependence of SLF variability on stellar mass for our sample of magnetic hot stars with masses between approximately 1.5 M⊙ < M < 20 M⊙. We found a significant negative correlation between the Bp and νchar. This suppression effect of magnetic fields on νchar may be a result of their inhibition of macroturbulence.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Magnetic fields - Early-type variable stars - Early-type stars - Asteroseismology

VizieR on-line data: <Available at CDS (J/ApJ/955/123): table1.dat table2.dat>

Status at CDS : Tables of objects will be appraised for possible ingestion in SIMBAD.

Simbad objects: 123

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Number of rows : 123
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 108 SB* 00 06 03.3890541936 +63 40 46.771220928 6.79 7.58 7.40     O4-8f?p 338 0
2 * zet Cas bC? 00 36 58.2844874846 +53 53 48.877599163 2.58 3.47 3.66 3.74 3.95 B2IV 470 0
3 V* BW Cet a2* 01 31 16.4742701952 -11 07 07.935608352   9.63 9.38     ApSrEu 43 0
4 * 49 Cet PM* 01 34 37.7786780856 -15 40 34.898673000   5.667 5.607   5.54 A1V 348 0
5 V* BM Hyi a2* 01 44 32.9704165392 -61 01 07.339971828   6.71 6.79     ApSi 44 0
6 V* BN Cet a2* 02 06 15.8004336360 -19 07 26.305108608   10.56 10.17     ApSrEuCr 54 0
7 V* BT Hyi a2* 03 00 37.0849651248 -81 54 07.305942240   9.64 9.35     ApSrEuCr 55 0
8 V* CT Hyi a2* 03 45 23.7356758848 -71 39 29.274503652   6.137 6.255     ApSi 59 0
9 HD 23478 Be* 03 46 40.8712236312 +32 17 24.675566784 6.17 6.708 6.671     B3IV 168 0
10 * 40 Tau ** 04 03 44.6044538328 +05 26 08.225802924 4.68 5.25 5.33     B5V 141 0
11 NGC 1624 OpC 04 40 36.0 +50 27 42     11.8     ~ 79 1
12 NGC 1624 2 * 04 40 37.2758720568 +50 27 41.040508572 11.9 12.47 11.57     O7f?cp 62 0
13 HD 34797 a2* 05 19 18.3112191840 -18 30 34.391115684 6.02 6.43 6.54     B7Vp 111 0
14 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
15 V* V1156 Ori Ro* 05 23 50.3591328504 +02 04 55.824899052   7.78 7.91     B7IV 150 0
16 HD 35502 SB* 05 25 01.2041767248 -02 48 55.690705872 6.76 7.30 7.34 7.32 7.40 B5IVsnp 135 0
17 HD 35912 * 05 28 01.4701489584 +01 17 53.700185940 5.52 6.212 6.380     B2V 167 0
18 * del02 Ori SB* 05 32 00.4064140728 -00 17 04.347484800 5.97 6.67 6.83     B2Vsn 296 0
19 V* V1099 Ori Pu* 05 32 13.0812769464 -01 36 01.745707500 7.6 8.18 8.29     B8II 107 0
20 HD 36982 Or* 05 35 09.8363878512 -05 27 53.216296776 8.00 8.58 8.46     B2V 225 0
21 * tet01 Ori C SB* 05 35 16.4662967280 -05 23 22.921811880 4.20 5.15 5.13 4.91 4.73 O7Vp 1479 1
22 HD 37017 SB* 05 35 21.8667428568 -04 29 39.024375324 5.66 6.43 6.56 6.61 6.74 B2/3V 318 0
23 HD 37058 Or* 05 35 33.3539646576 -04 50 15.181113696 6.40 7.18 7.30     B3/5II 177 0
24 * sig Ori E Y*O 05 38 47.2050040320 -02 35 40.521424812 5.66 6.38 6.46 6.84 7.08 B2IV-Vp_He 486 0
25 HD 37633 a2* 05 39 46.1985525288 -02 40 32.112574536   9.07 8.99   8.940 B9.5IIIpSi 67 0
26 * zet Ori ** 05 40 45.52666 -01 56 33.2649 0.50 1.56 1.77 1.85 2.05 O9.7Ib+B0III 375 0
27 * zet Ori A SB* 05 40 45.527143 -01 56 33.26036   1.79 1.90     O9.2IbvarNwk 680 0
28 V* V901 Ori Ro* 05 40 56.3704617744 -01 30 25.856677224 5.96 6.82 6.96     B2V 354 2
29 HD 43317 Pu* 06 15 47.0134228488 +04 17 01.095049500 5.82 6.456 6.614     B3IV 129 0
30 * 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
31 V* V682 Mon a2* 06 28 10.7659506576 -04 53 56.511231684   7.85 7.97     ApSi 100 0
32 * ksi01 CMa bC* 06 31 51.3662820799 -23 25 06.319934859 3.10 4.09 4.33 4.45 4.72 B0.7IV 336 0
33 HD 47129 SB* 06 37 24.0420854544 +06 08 07.369104444 5.23 6.11 6.06     O8I+O7.5III 420 0
34 HD 47777 Y*O 06 40 42.2934096648 +09 39 21.310266708 6.95 7.79 7.93   7.721 B2IV 125 0
35 HD 49299 a2* 06 46 56.6073872856 -20 39 07.067717244   10.22 10.20     ApSi 46 0
36 * eps CMa * 06 58 37.54876 -28 58 19.5102 0.36 1.29 1.50 1.59 1.80 B1.5II 519 0
37 HD 53921 SB* 07 03 15.09928 -59 10 41.1857           B9III+B8V 71 0
38 HD 54879 SB* 07 10 08.1487629504 -11 48 09.838940004 6.8 7.60 7.65     O9.7V 98 0
39 * 26 CMa Pu* 07 12 12.2147085456 -25 56 33.316082736 5.03 5.736 5.897     B2IV/V 93 0
40 V* V387 Car a2* 07 13 39.8753760240 -53 40 04.131228252   6.62 6.69     ApEuCrSr 41 0
41 HD 57682 * 07 22 02.0546074728 -08 58 45.766323408 5.20 6.24 6.43     O9.2IV 275 0
42 HD 58260 * 07 23 19.5997521648 -36 20 24.538554852 5.87 6.61 6.73     B2/3Vp 108 0
43 * k02 Pup V* 07 38 49.8707332608 -26 48 13.849787556   4.26 4.429     B5IV 66 0
44 V* OX Pup a2* 07 47 05.7565479792 -39 19 51.585710340   6.171 6.322     ApSi 93 0
45 HD 63425 * 07 47 07.1906927832 -41 30 13.426451532 5.82 6.76 6.94     B1/2Ib/II 71 0
46 HD 64740 * 07 53 03.6344819483 -49 36 46.956285817 3.48 4.40 4.63 4.76 4.97 B2V 223 0
47 CD-28 5104 s*b 07 55 52.8512069760 -28 37 46.791254424 9.39 10.13 9.94 10.12   O6Ifp 93 0
48 V* V607 Car a2* 07 56 22.6795854768 -61 17 02.136961464   9.365 9.340     ApSi 54 0
49 CPD-60 944B Pu* 07 56 46.2620797099 -60 48 58.296559706   8.77 8.76     B8III 53 0
50 V* V356 Car SB* 07 58 02.9117451672 -60 36 53.230792248 7.22 7.55 7.59     B9.5IVpSi 109 0
51 V* V422 Car a2* 07 59 21.2942838672 -60 48 56.393118468   9.13 9.08     B8/9pSi 84 0
52 HD 66318 * 07 59 27.4731907320 -60 47 47.144978988   9.69 9.56   9.555 A2:IV:pSiSrCr 99 0
53 HD 66522 * 08 01 35.1013259760 -50 36 20.164873212 6.61 7.26 7.19     B2III 62 0
54 HD 66765 ** 08 02 55.7155901784 -48 19 29.981984880 5.69 6.470 6.624     B1/2V 52 0
55 HD 66665 bC? 08 04 47.8516524576 +06 11 09.803109264 6.5 7.58 7.81     B1V 85 0
56 HD 67621 Y*O 08 06 41.6076511032 -48 29 50.600034816 5.31 6.143 6.317     B2IV 62 0
57 Ass Vel OB 2 As* 08 09 22.478 -47 21 03.46           ~ 307 0
58 HD 69067 a2* 08 13 46.5958798080 -37 43 27.374622852 7.72 8.13 8.22     ApSi 33 0
59 V* IO Vel a2* 09 38 03.2159284704 -54 13 08.778650664   6.771 6.871     ApSi 59 0
60 V* V423 Car a2* 09 55 05.9996548464 -57 22 58.525055328   6.62 6.74     ApSi 42 0
61 HD 87240 * 10 01 44.0901709680 -59 51 00.176879232   9.69 9.91     ApSi 46 0
62 V* V495 Car a2* 10 07 56.6284444848 -62 13 17.099698800   6.335 6.440     ApSi 42 0
63 HD 88385 a2* 10 09 49.4475936384 -56 44 53.245713372 8.02 8.11 8.09     ApCrEu(Sr) 47 0
64 HD 89103 * 10 15 34.4235698160 -49 13 26.916692052   7.69 7.78     ApSi 39 0
65 HD 92499 * 10 40 08.5912210416 -43 04 50.514871224   9.29 8.88     ApSrEuCr 43 0
66 CD-59 3239 bC? 10 42 36.1526752608 -59 59 26.058515532 10.16 10.85 10.80 10.77 10.655 B0.5V 33 0
67 CPD-59 2629 * 10 45 08.2352224872 -59 46 06.976659612 10.780 11.336 10.848   9.971 O8.5Vp 78 0
68 V* KQ Vel a2* 10 55 01.0131717072 -42 15 03.962480184 5.78 6.03 6.11     Ap(SiCr) 142 0
69 HD 96446 bC? 11 06 05.8219128840 -59 56 59.564064444 5.81 6.57 6.69     B2IIIp 177 0
70 CPD-62 2124 * 11 35 36.8614624296 -63 15 48.516783840 10.30 11.15 11.01 11.14   B2IIIHe 52 0
71 HD 306795 * 11 35 51.9938438400 -61 39 39.678067512   10.689 10.671     A 19 0
72 HD 101412 Be* 11 39 44.4564911064 -60 10 27.719780304   9.465 9.288     A3VaekA0mA0_lB 151 0
73 HD 105382 Be* 12 08 05.2222663992 -50 39 40.575451536 3.65 4.32 4.47 4.53 4.70 B5V 186 0
74 V* CU Oct a2* 12 11 09.4105991088 -83 46 41.502685008   7.47 7.37     ApSi 41 0
75 HD 115226 a2* 13 18 00.0189897768 -72 57 00.947433276   8.84 8.50     ApSr(Eu) 40 0
76 HD 115440 a2* 13 20 04.5028306680 -76 25 09.074880912   8.30 8.24     Ap(Si) 39 0
77 V* EZ Mus a2* 13 28 46.7866924608 -69 37 37.635408696   6.163 6.179     B8pSi 61 0
78 HD 117025 PM* 13 29 07.9098687240 -64 40 32.882662236 6.23 6.20 6.07     ApSrEuCr 54 0
79 HD 118913 * 13 42 26.9555218248 -69 14 48.912765900   7.76 7.69     ApEuCrSr 35 0
80 HD 119308 * 13 43 12.7839118464 -35 17 24.888812064   7.90 7.86     ApSrCrEu 38 0
81 * phi Cen Pu* 13 58 16.2661773764 -42 06 02.724906325 2.79 3.608 3.802     B2IV 166 0
82 HD 122983 Ro* 14 06 13.7010707688 -48 23 12.684451920 9.770 9.91 9.79     B9/A0IV/V 31 0
83 * a Cen Ro* 14 23 02.2387240143 -39 30 42.544559700 3.50 4.24 4.42 4.53 4.70 B2V 289 0
84 * sig Lup El* 14 32 37.0550628352 -50 27 25.733667127 3.39 4.240 4.423     B1/B2V 122 0
85 HD 127453 * 14 34 59.9683790616 -69 27 11.465001648   7.36 7.36     ApSi 38 0
86 V* CH Cir a2* 14 35 35.0882290512 -68 44 20.832248184   7.75 7.75     ApSi 40 0
87 V* IT Lup a2* 14 40 19.2710755512 -45 47 37.824571176   6.504 6.615     ApSi 68 0
88 HD 129899 a2* 14 51 30.0361856688 -77 10 33.495169116   6.41 6.44     ApSi 40 0
89 * omi Lup ** 14 51 38.3028905 -43 34 31.296546 3.59 4.164 4.313     B5IV 123 0
90 * eps Lup bC* 15 22 40.8682566 -44 41 22.614637 2.46 3.191 3.366     B3IV+B3:V 193 0
91 * ups Lup PM* 15 24 45.0168297736 -39 42 36.911050864   5.26 5.37     ApSi 78 0
92 HD 138758 * 15 40 27.2341578000 -74 26 35.551813884   7.86 7.89     ApSi 36 0
93 HD 146555 a2* 16 19 59.3505102216 -57 54 28.231388424   10.24 10.26     ApSi 32 0
94 HD 149277 SB* 16 35 48.1576287288 -45 40 43.537136484 7.77 8.41 8.41     B2VeHe 59 0
95 * tau Sco * 16 35 52.9528530 -28 12 57.661515 1.55 2.56 2.81 2.93 3.18 B0V 959 0
96 V* V773 Her a2* 16 36 42.9385265832 +15 29 50.827223688   6.296 6.355     A2VpSiSrCr 114 0
97 V* V1062 Sco a2* 16 38 30.9410484900 -39 09 08.389193766   6.92 6.95     ApSi 78 0
98 CD-48 11051 * 16 40 33.8980280640 -48 53 16.138367700 10.13 10.74 10.35 10.45   OB: 47 0
99 V* V835 Ara a2* 16 44 11.4498857664 -48 39 18.114773796   10.40 9.91     A/F(pEu) 39 0
100 HD 154708 a2* 17 10 28.5163457616 -58 00 17.416695708   9.23 8.76     ApSrEu 91 0
101 HD 156324 ** 17 18 23.4169659816 -32 24 14.486025672 8.28 8.86 8.81 9.49   B2V 34 0
102 HD 156424 ** 17 18 54.549192 -32 20 44.68632 8.17     9.471   B2Ib/II 34 0
103 HD 157751 * 17 26 41.1938555088 -34 05 32.487196416   7.60 7.62     ApSiCr(Sr) 47 0
104 V* V834 Ara a2* 17 48 29.5532022648 -51 55 02.538979464   10.81 10.39     ApEuSrCr 32 0
105 V* V2052 Oph bC* 17 56 18.4001168880 +00 40 13.273317228 5.28 5.874 5.820     B3III 222 0
106 V* V694 CrA a2* 18 12 25.8347418984 -37 45 09.271268532   8.34 7.92     ApSrCrEu 122 0
107 V* V686 CrA a2* 18 56 40.4859327624 -37 20 35.701261512 4.53 5.24 5.38     B3V 214 0
108 HD 176582 Er* 18 59 12.2918170752 +39 13 02.360908524 5.52 6.248 6.403     B5V 103 0
109 HD 172690 * 19 02 14.4154344264 -83 56 23.249728896   7.47 7.49     ApSi(SrCr) 35 0
110 HD 176196 * 19 06 56.1273970992 -74 45 26.801310564   7.45 7.51     ApEuCr(Sr) 27 0
111 V* V1671 Cyg Ro* 19 35 32.0102348112 +31 16 35.933414736 6.44 7.29 7.44     B2V 136 0
112 V* V3961 Sgr a2* 19 51 50.6106718344 -39 52 27.738309468 5.05 5.27 5.33     ApCr(Si) 191 0
113 HD 345439 Be* 19 58 48.4896519480 +23 05 21.559730172   11.61 11.11 11.37   B1V-B2V 41 0
114 V* V2100 Cyg a2* 19 59 15.3468080976 +52 03 20.488833576 5.29 5.954 6.125     B5III 66 0
115 HD 191612 SB* 20 09 28.6105997664 +35 44 01.286453904 7.40 8.07 7.80     O8fpe 250 0
116 V* CK Oct a2* 20 13 56.3652220104 -78 52 42.269446308   10.41 9.94     ApEuSr 51 0
117 HD 200775 Ae* 21 01 36.9205762896 +68 09 47.789578836 7.34 7.754 7.427 8.13   B2Ve 582 0
118 HD 201018 HS* 21 08 07.6128003360 -37 02 42.863192916 8.69 8.76 8.63     sdB+F 30 0
119 V* BI Mic a2* 21 26 03.8683509936 -29 55 48.145296468   9.10 8.81     ApSrEu 87 0
120 * bet Cep bC* 21 28 39.5968513 +70 33 38.574681 2.05 3.01 3.23 3.33 3.55 B0.5IIIs 756 0
121 V* BK Gru a2* 22 24 37.6103122272 -39 07 37.475207724   7.00 6.84     ApSrEuCr 66 0
122 V* CN Tuc a2* 23 09 27.7123518144 -63 39 12.107929716   9.62 9.38     ApEuSr 48 0
123 HD 218994 ** 23 13 16.03824 -60 35 02.8514           ApSr 40 0

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