2005A&A...440..305F

Query : 2005A&A...440..305F

2005A&A...440..305F - Astronomy and Astrophysics, volume 440305-320 (2005/9-2)

Effects of gravitational darkening on the determination of fundamental parameters in fast-rotating B-type stars.

FREMAT Y., ZOREC J., HUBERT A.-M. and FLOQUET M.

Abstract (from CDS):

In this paper we develop a calculation code to account for the effects carried by fast rotation on the observed spectra of early-type stars. Stars are assumed to be in rigid rotation, and the grid of plane-parallel model atmospheres used to represent the gravitational darkening are calculated by means of a non-LTE approach. Attention is paid to the relation between the apparent and parent non-rotating counterpart stellar fundamental parameters and apparent, and true Vsin i parameters as a function of the rotation rate Ω/Ωc, stellar mass, and inclination angle. It is shown that omitting of gravitational darkening in the analysis of chemical abundances of CNO elements can produce systematic overestimation or underestimation, depending on the lines used, rotational rate, and inclination angle. The proximity of Be stars to the critical rotation is revised while correcting not only the Vsini of 130 Be stars, but also their effective temperature and gravity to account for stellar rotationally induced geometrical distortion and for the concomitant gravitational darkening effect. We concluded that the Vsin i increase is accompanied by an even higher value for the stellar equatorial critical velocity, so that the most probable average rate of the angular velocity of Be stars attains Ω/Ωc≃0.88.

Abstract Copyright: ∼

Journal keyword(s): stars: abundances - stars: atmospheres - stars: early-type - stars: emission-line, Be - stars: fundamental parameters

VizieR on-line data: <Available at CDS (J/A+A/440/305): table9.dat>

Simbad objects: 130

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Number of rows : 130
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 * 10 Cas Be* 00 06 26.5373262768 +64 11 46.168691820 5.37 5.56 5.59     B9IIIe 118 0
2 * omi Cas Be* 00 44 43.5186007265 +48 17 03.731037403 3.91 4.44 4.50 4.45 4.50 B5IIIe 291 0
3 * gam Cas HXB 00 56 42.5310945 +60 43 00.264089 1.18 2.29 2.39 2.32 2.40 B0.5IVpe 1253 0
4 * phi And Be* 01 09 30.12562 +47 14 30.4594 3.84 4.18 4.25 4.22 4.27 B5IIIe 244 0
5 * phi Per Be* 01 43 39.6379691568 +50 41 19.433124998 3.10 4.02 4.06 3.90 3.88 B1.5V:e-shell 594 0
6 HD 11606 Be* 01 55 42.8535736272 +59 16 24.421983852 6.22 7.08 7.02     B2Vne 90 0
7 HD 18552 Be* 03 00 11.8861086336 +38 07 54.197462964 5.67 6.05 6.11     B7IVe 94 0
8 HD 19243 Be* 03 08 54.1761981696 +62 23 04.549808184 7.778 6.719 6.498     B1V:e 102 0
9 HD 20336 Be* 03 19 59.2693390128 +65 39 08.285606820 3.93 4.70 4.85 4.88 5.01 B2.5Vn(e) 226 0
10 * psi Per Be* 03 36 29.3797327450 +48 11 33.484405927 3.60 4.17 4.23     B5Ve 431 0
11 HD 22780 Be* 03 41 07.8571995216 +37 34 48.707896728 5.09 5.50 5.57     B7Vn 101 0
12 * 13 Tau Be* 03 42 18.9476782488 +19 42 00.918475956 5.41 5.68 5.69     B7Ve 107 0
13 * 17 Tau Be* 03 44 52.5370897890 +24 06 48.016260072 3.19 3.59 3.70 3.71 3.80 B6IIIe 415 1
14 * 23 Tau Be* 03 46 19.5858871361 +23 56 54.092177220 3.70 4.12 4.18   4.16 B6IV(e) 446 2
15 * eta Tau Be* 03 47 29.0765529 +24 06 18.488347 2.44 2.78 2.87 2.84 2.88 B7III 557 1
16 HD 23552 Be* 03 48 18.0746021928 +50 44 12.357606372 5.88 6.20 6.14     B8V 93 0
17 * 28 Tau Be* 03 49 11.2165977912 +24 08 12.156712008 4.73 5.01 5.09   5.08 B8Vne 494 0
18 V* X Per HXB 03 55 23.0777456088 +31 02 45.039836148 6.090 6.840 6.720     O9.5III 1037 0
19 * c Per Be* 04 08 39.6935695869 +47 42 45.038007366 3.45 4.00 4.03 3.91 3.93 B3Ve 394 0
20 * 228 Eri Be* 04 29 06.9254098152 -13 02 54.127769208 4.45 5.23 5.41 5.46 5.63 B2(V)ne 286 0
21 * 56 Eri Be* 04 44 05.3207274312 -08 30 12.852684720 4.97 5.75 5.81 5.72 5.74 B2(V)nne 186 0
22 * 11 Cam Be* 05 06 08.4527318736 +58 58 20.543222820 4.31 5.00 5.08     B3Ve 221 0
23 * lam Eri Be* 05 09 08.7840557047 -08 45 14.701594805 3.17 4.07 4.27 4.35 4.55 B2III(e)p 316 1
24 * eta Ori bC* 05 24 28.61672 -02 23 49.7311 2.25 3.18 3.35 3.44 3.65 B1V+B2: 412 0
25 * psi01 Ori Be* 05 24 44.8273848312 +01 50 47.201915688 3.83 4.76 4.96 5.04 5.26 B1Vn 372 0
26 * 120 Tau Be* 05 33 31.6304227080 +18 32 24.827431848 4.94 5.70 5.69     B2IV-Ve 156 0
27 * zet Tau Be* 05 37 38.6854231 +21 08 33.158804 2.22 2.84 3.03 3.06 3.15 B1IVe_shell 751 0
28 * alf Col Be* 05 39 38.9410319 -34 04 26.794991 2.10 2.53 2.65 2.65 2.74 B9Ve 251 0
29 HD 37657 Be* 05 42 19.8666978768 +43 03 34.517994084 6.66 7.25 7.25     B3Vne 77 0
30 HD 37967 Be* 05 43 19.5024321168 +23 12 15.748208100 5.51 6.15 6.21     B4Ve 112 0
31 HD 38010 Be* 05 43 39.0600065208 +25 26 22.369296552 6.15 6.83 6.82     B1Vep 80 1
32 HD 41335 Be* 06 04 13.5003372120 -06 42 32.225392980 4.31 5.14 5.21 5.13 5.09 B1V 314 0
33 HD 40978 Be* 06 04 38.4089582760 +46 35 06.404686404 6.44 7.189 7.286     B3Ve 52 0
34 * f01 Ori Be* 06 12 03.2799360825 +16 07 49.453623814 4.21 4.80 4.92 4.94 5.08 B5Vn 130 0
35 HD 44458 Be* 06 21 24.7165403448 -11 46 23.666159604 4.74 5.56 5.55 5.38 5.34 B1.5IVe 165 0
36 HD 45314 Be* 06 27 15.7784072112 +14 53 21.212913660 5.91 6.79 6.64     O9:npe 183 0
37 * bet Mon ** 06 28 49.06971 -07 01 59.0101 2.85 3.59 3.74 3.75 3.91 B4Ve+B2Vn(e)+B3V:nne 227 0
38 * bet Mon A Be* 06 28 49.0704018024 -07 01 59.013827328 3.87 4.50 4.60     B4Veshell 253 0
39 * nu. Gem Be* 06 28 57.7861342 +20 12 43.685624 3.51 4.00 4.14 4.17 4.28 B6IVe 269 0
40 HD 45910 Be* 06 30 32.9373877056 +05 52 01.204796244 6.64 7.18 6.85 6.31 5.81 B2IIIe 234 0
41 HD 45995 Be* 06 31 09.5621343984 +11 15 04.953226644 5.20 6.06 6.14     B1.5Vne 164 0
42 HD 47054 Be* 06 36 35.3296522656 -05 12 40.103033112 5.05 5.44 5.52     B8IVe 108 0
43 * 10 CMa Be* 06 44 28.4671043496 -31 04 13.892357820 4.18 5.08 5.17 5.15 5.17 B2V 150 0
44 * kap CMa Be* 06 49 50.4591124672 -32 30 30.523820933 2.73 3.68 3.89 3.91 4.05 B1.5Ve 298 0
45 HD 50083 Be* 06 51 45.7534246176 +05 05 03.862857048 6.22 6.98 6.92     B3 114 0
46 HD 53974 ** 07 06 40.76672 -11 17 38.4396 4.59 5.44 5.39 6.80   B0IIIn 186 1
47 HD 54309 Be* 07 07 22.5873962184 -23 50 26.573827884 4.83 5.68 5.83 5.83 5.95 B3Vne 140 0
48 * 27 CMa Be* 07 14 15.2117197408 -26 21 09.028965559 3.76 4.45 4.65 4.64 4.73 B4Ve_sh 240 0
49 * ome CMa Be* 07 14 48.6540133346 -26 46 21.603204215 2.90 3.64 3.82 3.80 3.90 B2.5Ve 373 0
50 * ups02 Pup Be* 07 18 38.1853955232 -36 44 33.854932104 4.28 4.95 5.11 5.17 5.38 B3Vne 127 1
51 HD 58050 Be* 07 24 27.6487438296 +15 31 01.908288624 5.39 6.23 6.41     B2Ve 138 0
52 HD 58343 Be* 07 24 40.1873324160 -16 12 05.302248804 4.52 5.15 5.19 5.05 5.06 B2Vne 222 0
53 HD 58978 Be* 07 26 59.4826856664 -23 05 09.689679528 4.51 5.45 5.56 7.05   B0.5IVe 248 0
54 * bet CMi Be* 07 27 09.0417373 +08 17 21.536745 2.52 2.80 2.89 2.90 2.96 B8Ve 400 0
55 * z Pup Be* 07 33 51.0415389912 -36 20 18.212736408 4.67 5.37 5.44 5.33 5.32 B2Vne 135 0
56 HD 60848 Be* 07 37 05.7325392528 +16 54 15.300327852 5.55 6.67 6.87     O8:V:pe 150 0
57 * omi Pup Be* 07 48 05.1686329933 -25 56 13.810593657 3.42 4.43 4.49 4.37 4.37 B1IVe 228 0
58 HD 65875 Be* 08 00 44.1338106480 -02 52 54.913100736 5.68 6.49 6.59 6.48 6.50 B2.5Ve 143 0
59 * r Pup Be* 08 13 29.5172754003 -35 53 58.265647773 3.68 4.66 4.77 4.68 4.77 B1V 199 0
60 * f Car Be* 08 46 42.5482603396 -56 46 11.194513753 3.58 4.31 4.49 4.59 4.78 B3V(n) 152 0
61 HD 77320 Be* 09 00 22.2552895536 -43 10 26.376862224 5.16 5.93 6.08 6.07 6.19 B2Vnn(e) 98 1
62 * I Hya Be* 09 41 17.0067101149 -23 35 29.451517089 4.07 4.65 4.76 4.75 4.84 B5V 182 0
63 HD 86612 Be* 09 59 06.3044206872 -23 57 02.767063320 5.51 6.13 6.25 6.14 6.19 B5IVe 104 0
64 HD 88661 Be* 10 11 46.4595963216 -58 03 37.958712444 4.77 5.66 5.75 5.66 5.70 B5Vne 161 0
65 * ome Car Be* 10 13 44.2205948661 -70 02 16.463210640 2.92 3.25 3.33 3.29 3.32 B7III 129 0
66 HD 91120 Be* 10 30 59.8371178656 -13 35 18.495281472 5.38 5.54 5.58     B9IIIe 111 0
67 * p Car Be* 10 32 01.4650915230 -61 41 07.195030368 2.46 3.18 3.27 3.22 3.28 B4Vne 243 0
68 * del Cen Be* 12 08 21.4976373 -50 43 20.738614 1.51 2.39 2.52 2.48 2.62 B2Vne 320 0
69 HD 105521 Be* 12 08 54.5892904200 -41 13 53.771811240 4.87 5.402 5.498     B3IVe 87 0
70 * kap Dra Be* 12 33 28.9433168544 +69 47 17.659892220 3.18 3.75 3.89 3.84 3.92 B6IIIe 395 0
71 HD 110432 HXB 12 42 50.2663572384 -63 03 31.052981412 4.79 5.58 5.31     B0.5IVpe 334 0
72 * mu.02 Cru Be* 12 54 36.8841589536 -57 10 07.193918388 4.59 5.09 5.20 5.00 5.06 B5Vne 189 0
73 * lam Cru Be* 12 54 39.1827302030 -59 08 48.129223088 3.86 4.451 4.602     B3Vne 150 1
74 * mu. Cen Be* 13 49 36.9886872492 -42 28 25.440271450 2.37 3.27 3.43 3.41 3.50 B2Vnpe 453 0
75 HD 120991 Be* 13 53 57.2397645360 -47 07 41.390612184 5.11 6.03 6.10 6.24 6.34 B2Ve 145 0
76 HD 124367 Be* 14 14 57.1383087504 -57 05 10.049405532 4.36 4.99 5.07     B4Vne 153 0
77 * eta Cen Be* 14 35 30.4241610 -42 09 28.170782 1.30 2.12 2.31 2.41 2.59 B2Ve 361 1
78 * tet Cir Be* 14 56 43.9850523987 -62 46 51.675365388 4.34 5.11 5.11 4.87 4.79 B2III 120 0
79 * mu. Lup Be* 15 18 32.02296 -47 52 30.9957 3.82         B8Ve 112 0
80 * kap01 Aps Be* 15 31 30.8221293192 -73 23 22.529543604 4.60 5.37 5.49     B2Vnpe 126 0
81 * tet CrB Be* 15 32 55.78214 +31 21 32.8762 3.45 4.00 4.13 4.18 4.29 B6Vnne 297 0
82 HD 142184 Be* 15 53 55.8637866220 -23 58 41.143370530 4.77 5.352 5.402     B2V 261 1
83 * 4 Her Be* 15 55 30.5919435384 +42 33 58.291421364 5.23 5.64 5.75   5.82 B9pe 184 0
84 * 48 Lib Be* 15 58 11.3682502453 -14 16 45.681109093 4.61 4.77 4.87 4.91 4.96 B5IIIp_sh 446 0
85 * chi Oph Be* 16 27 01.4355697915 -18 27 22.499961252 3.95 4.71 4.43 3.97 3.73 B2Vne 624 0
86 * tau Sco * 16 35 52.9528530 -28 12 57.661515 1.55 2.56 2.81 2.93 3.18 B0V 959 0
87 * zet Oph Be* 16 37 09.5400587698 -10 34 01.509742704 1.73 2.58 2.56 2.46 2.50 O9.2IVnn 1908 0
88 * iot Ara Be* 17 23 16.0762402440 -47 28 05.505681720 4.32 5.14 5.25 5.12 5.20 B1V 157 0
89 * alf Ara Be* 17 31 50.4915282 -49 52 34.122041 2.09 2.78 2.95 3.05 3.29 B2Vne 269 0
90 * z Her Be* 17 50 03.3345672768 +48 23 38.948985636 6.380 6.790 6.890     B6IIInp_sh 168 0
91 * 66 Oph Be* 18 00 15.7957050537 +04 22 07.122326765 3.77 4.58 4.60 4.47 4.49 B2Ve 358 0
92 HD 167128 Be* 18 17 07.5324253562 -56 01 24.057583523 4.62 5.30 5.36 5.32 5.36 B3IIIe 175 0
93 HD 174237 Be* 18 46 43.0891606728 +52 59 16.654686648 5.06 5.80 5.90     B3+F5III 212 0
94 * lam Pav Be* 18 52 13.0338312065 -62 11 15.327318320 3.19 4.048 4.207     B2Ve 159 0
95 * 64 Ser Be* 18 57 16.5900397800 +02 32 07.245780324 5.29 5.545 5.551     B8/9II 114 0
96 HD 178175 Be* 19 08 16.7018664360 -19 17 25.037957508 4.79 5.43 5.49 5.50 5.51 B2Ve 150 0
97 HD 183656 Be* 19 30 33.1219108488 +03 26 39.860267784 5.69 6.064 6.082     B7III 133 0
98 * bet02 Cyg Be* 19 30 45.3961817904 +27 57 54.989118612 4.69 5.01 5.11     B8Ve 170 0
99 * 11 Cyg Be* 19 35 48.3043356552 +36 56 40.346673756 5.42 5.939 6.034     B8Vne 82 0
100 * kap Aql * 19 36 53.4488871022 -07 01 38.924816492 4.050 4.930 4.960 4.90 4.94 B0.5IIIn 354 0
101 * 12 Vul Be* 19 51 04.1083085616 +22 36 36.172997964 4.15 4.84 4.96 4.98 5.12 B2.5Ve 192 0
102 * 25 Cyg Be* 19 59 55.1953945704 +37 02 34.387660896 4.33 5.02 5.19     B3IVe 161 1
103 * b02 Cyg Be* 20 09 25.6190611128 +36 50 22.633958400 4.03 4.80 4.93     B2.5Ve 281 0
104 * 20 Vul Be* 20 12 00.7015131216 +26 28 43.703768388 5.38 5.81 5.92     B7Ve 115 0
105 * 25 Vul Be* 20 22 03.4304260608 +24 26 45.964990644 5.06 5.45 5.56 5.59 5.58 B6IVe 110 0
106 HD 194335 Be* 20 23 44.3690462664 +37 28 35.209455780 4.82 5.70 5.90     B2IIIe 161 0
107 * lam Cyg ** 20 47 24.53766 +36 29 26.5737 3.93 4.43 4.54 4.58 4.69 B5V 312 0
108 * f01 Cyg Be* 20 59 49.5541247496 +47 31 15.363746436 3.77 4.71 4.75 4.62 4.63 B1.5Vnne 514 0
109 HD 201733 Be* 21 09 58.6315040496 +45 30 09.197208504 5.81 6.47 6.63     B4IVp 99 0
110 HD 203374 Be* 21 19 07.3685524992 +61 51 30.436799148 6.23 6.908 6.674     B0IVpe 135 0
111 * 6 Cep Be* 21 19 22.2207740260 +64 52 18.685242792 4.56 5.14 5.18     B3IVe 169 0
112 * eps Cap Be* 21 37 04.8311169408 -19 27 57.640399810 3.69 4.35 4.55 4.60 4.74 B3V 266 0
113 HD 206773 Be* 21 42 24.1853979312 +57 44 09.795762276 6.30 7.10 6.87     B0V:pe 178 0
114 * 16 Peg Be* 21 53 03.7686220732 +25 55 30.489021805 4.24 4.921 5.081     B6IIIe 175 0
115 HD 208682 Be* 21 55 30.99976 +65 19 14.9142 5.05 5.80 5.86     B2Ve 130 0
116 * eta PsA Be* 22 00 50.22537 -28 27 13.4639 4.96         B8III_sh+B8.5IV 106 0
117 * omi Aqr Be* 22 03 18.8440617830 -02 09 19.313835540 4.22 4.64 4.69 4.70 4.74 B5V 279 0
118 HD 209522 Be* 22 04 36.7663467696 -26 49 20.495440812 5.16 5.793 5.953     B4IVe 98 0
119 * 25 Peg Be* 22 07 50.3038755192 +21 42 10.536282684 5.27 5.68 5.78     B7Vne 119 0
120 * 31 Peg Be* 22 21 31.0751048 +12 12 18.662815 4.08 4.89 4.99 5.06 5.20 B3III 227 0
121 * pi. Aqr Be* 22 25 16.6230017410 +01 22 38.634449478 3.64 4.60 4.64 4.48 4.48 B1III-IVe 436 0
122 * 8 Lac B * 22 35 52.0990532376 +39 37 41.339738568 4.61 5.52 5.67 5.88 6.06 B1.Vs 120 0
123 * eps PsA Be* 22 40 39.3482564136 -27 02 37.015051704 3.69 4.071 4.177     B7III 163 0
124 HD 217050 Be* 22 57 04.5020619144 +48 41 02.645623680 4.81 5.34 5.43     B4IIIpe 340 1
125 HD 217543 Be* 23 00 54.7485457920 +38 42 28.238625504 5.78 6.43 6.54     B2.5Vn 109 0
126 * omi And Be* 23 01 55.2649954408 +42 19 33.655865640 3.00 3.53 3.62 3.61 3.69 B6IV/V_sh 437 0
127 * bet Psc Be* 23 03 52.6132153632 +03 49 12.164302217 3.90 4.40 4.52 4.54 4.67 B6Ve 259 0
128 HD 224559 Be* 23 58 46.4393230728 +46 24 47.443832676 5.84 6.444 6.538     B4Vne 140 1
129 HD 224544 Be* 23 58 49.2357605112 +32 22 54.145033284 5.84 6.395 6.515     B6IVe 72 0
130 * eps Tuc Be* 23 59 54.9771397256 -65 34 37.677425716 4.12 4.38 4.47 4.45 4.49 B8V 145 0

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