2005A&A...441..235Z

Query : 2005A&A...441..235Z

2005A&A...441..235Z - Astronomy and Astrophysics, volume 441235 (2005/10-1)

On the evolutionary status of Be stars. I. Field Be stars near the Sun.

ZOREC J., FREMAT Y. and CIDALE L.

Abstract (from CDS):

A sample of 97 galactic field Be stars were studied by taking into account the effects induced by the fast rotation on their fundamental parameters. All program stars were observed in the BCD spectrophotometric system in order to minimize the perturbations produced by the circumstellar environment on the spectral photospheric signatures. This is one of the first attempts at determining stellar masses and ages by simultaneously using model atmospheres and evolutionary tracks, both calculated for rotating objects. The stellar ages (τ) normalized to the respective inferred time that each rotating star can spend in the main sequence phase (τMS) reveal a mass-dependent trend. This trend shows that: a) there are Be stars spread over the whole interval 0<τ/τMS<1 of the main sequence evolutionary phase; b) the distribution of points in the (τ/τMS,M/M☉) diagram indicates that in massive stars (M>12M☉) the Be phenomenon is present at smaller τ/τMS age ratios than for less massive stars (M<12M☉). This distribution can be due to: i) higher mass-loss rates in massive objets, which can act to reduce the surface fast rotation; ii) circulation time scales to transport angular momentum from the core to the surface, which are longer the lower the stellar mass.

Abstract Copyright: ∼

Journal keyword(s): stars: emission-line, Be - stars: evolution - stars: rotation - stars: fundamental parameters (classification, colors, luminosities, masses, radii, temperatures, etc.)

Simbad objects: 98

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Number of rows : 98
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 * omi Cas Be* 00 44 43.5186007265 +48 17 03.731037403 3.91 4.44 4.50 4.45 4.50 B5IIIe 291 0
2 * 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
3 * alf Eri Be* 01 37 42.84548 -57 14 12.3101 -0.36 0.30 0.46 0.49 0.60 B6Vpe 495 1
4 * 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
5 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
6 * psi Per Be* 03 36 29.3797327450 +48 11 33.484405927 3.60 4.17 4.23     B5Ve 431 0
7 * 13 Tau Be* 03 42 18.9476782488 +19 42 00.918475956 5.41 5.68 5.69     B7Ve 107 0
8 * 17 Tau Be* 03 44 52.5370897890 +24 06 48.016260072 3.19 3.59 3.70 3.71 3.80 B6IIIe 415 1
9 * 23 Tau Be* 03 46 19.5858871361 +23 56 54.092177220 3.70 4.12 4.18   4.16 B6IV(e) 446 2
10 * eta Tau Be* 03 47 29.0765529 +24 06 18.488347 2.44 2.78 2.87 2.84 2.88 B7III 557 1
11 * 28 Tau Be* 03 49 11.2165977912 +24 08 12.156712008 4.73 5.01 5.09   5.08 B8Vne 494 0
12 V* X Per HXB 03 55 23.0777456088 +31 02 45.039836148 6.090 6.840 6.720     O9.5III 1037 0
13 * c Per Be* 04 08 39.6935695869 +47 42 45.038007366 3.45 4.00 4.03 3.91 3.93 B3Ve 394 0
14 * 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
15 * 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
16 * 11 Cam Be* 05 06 08.4527318736 +58 58 20.543222820 4.31 5.00 5.08     B3Ve 221 0
17 * 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
18 * psi01 Ori Be* 05 24 44.8273848312 +01 50 47.201915688 3.83 4.76 4.96 5.04 5.26 B1Vn 372 0
19 * 120 Tau Be* 05 33 31.6304227080 +18 32 24.827431848 4.94 5.70 5.69     B2IV-Ve 156 0
20 * 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
21 * ome Ori Be* 05 39 11.1457980782 +04 07 17.288290296 3.73 4.48 4.59 4.57 4.67 B3Ve 424 1
22 * alf Col Be* 05 39 38.9410319 -34 04 26.794991 2.10 2.53 2.65 2.65 2.74 B9Ve 251 0
23 HD 37657 Be* 05 42 19.8666978768 +43 03 34.517994084 6.66 7.25 7.25     B3Vne 77 0
24 HD 37967 Be* 05 43 19.5024321168 +23 12 15.748208100 5.51 6.15 6.21     B4Ve 112 0
25 HD 38010 Be* 05 43 39.0600065208 +25 26 22.369296552 6.15 6.83 6.82     B1Vep 80 1
26 HD 41335 Be* 06 04 13.5003372120 -06 42 32.225392980 4.31 5.14 5.21 5.13 5.09 B1V 314 0
27 HD 40978 Be* 06 04 38.4089582760 +46 35 06.404686404 6.44 7.189 7.286     B3Ve 52 0
28 * f01 Ori Be* 06 12 03.2799360825 +16 07 49.453623814 4.21 4.80 4.92 4.94 5.08 B5Vn 130 0
29 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
30 HD 45314 Be* 06 27 15.7784072112 +14 53 21.212913660 5.91 6.79 6.64     O9:npe 183 0
31 * 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
32 * bet Mon A Be* 06 28 49.0704018024 -07 01 59.013827328 3.87 4.50 4.60     B4Veshell 253 0
33 * nu. Gem Be* 06 28 57.7861342 +20 12 43.685624 3.51 4.00 4.14 4.17 4.28 B6IVe 269 0
34 HD 45910 Be* 06 30 32.9373877056 +05 52 01.204796244 6.64 7.18 6.85 6.31 5.81 B2IIIe 234 0
35 HD 45995 Be* 06 31 09.5621343984 +11 15 04.953226644 5.20 6.06 6.14     B1.5Vne 164 0
36 HD 47054 Be* 06 36 35.3296522656 -05 12 40.103033112 5.05 5.44 5.52     B8IVe 108 0
37 * 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
38 HD 50083 Be* 06 51 45.7534246176 +05 05 03.862857048 6.22 6.98 6.92     B3 114 0
39 HD 53974 ** 07 06 40.76672 -11 17 38.4396 4.59 5.44 5.39 6.80   B0IIIn 186 1
40 * 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
41 * 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
42 * ups02 Pup Be* 07 18 38.1853955232 -36 44 33.854932104 4.28 4.95 5.11 5.17 5.38 B3Vne 127 1
43 HD 58050 Be* 07 24 27.6487438296 +15 31 01.908288624 5.39 6.23 6.41     B2Ve 138 0
44 HD 58343 Be* 07 24 40.1873324160 -16 12 05.302248804 4.52 5.15 5.19 5.05 5.06 B2Vne 222 0
45 * bet CMi Be* 07 27 09.0417373 +08 17 21.536745 2.52 2.80 2.89 2.90 2.96 B8Ve 400 0
46 HD 60848 Be* 07 37 05.7325392528 +16 54 15.300327852 5.55 6.67 6.87     O8:V:pe 150 0
47 * omi Pup Be* 07 48 05.1686329933 -25 56 13.810593657 3.42 4.43 4.49 4.37 4.37 B1IVe 228 0
48 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
49 * r Pup Be* 08 13 29.5172754003 -35 53 58.265647773 3.68 4.66 4.77 4.68 4.77 B1V 199 0
50 * I Hya Be* 09 41 17.0067101149 -23 35 29.451517089 4.07 4.65 4.76 4.75 4.84 B5V 182 0
51 HD 91120 Be* 10 30 59.8371178656 -13 35 18.495281472 5.38 5.54 5.58     B9IIIe 111 0
52 * p Car Be* 10 32 01.4650915230 -61 41 07.195030368 2.46 3.18 3.27 3.22 3.28 B4Vne 243 0
53 * kap Dra Be* 12 33 28.9433168544 +69 47 17.659892220 3.18 3.75 3.89 3.84 3.92 B6IIIe 395 0
54 HD 110432 HXB 12 42 50.2663572384 -63 03 31.052981412 4.79 5.58 5.31     B0.5IVpe 334 0
55 * 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
56 * mu. Cen Be* 13 49 36.9886872492 -42 28 25.440271450 2.37 3.27 3.43 3.41 3.50 B2Vnpe 453 0
57 HD 120991 Be* 13 53 57.2397645360 -47 07 41.390612184 5.11 6.03 6.10 6.24 6.34 B2Ve 145 0
58 HD 124367 Be* 14 14 57.1383087504 -57 05 10.049405532 4.36 4.99 5.07     B4Vne 153 0
59 * eta Cen Be* 14 35 30.4241610 -42 09 28.170782 1.30 2.12 2.31 2.41 2.59 B2Ve 361 1
60 * tet Cir Be* 14 56 43.9850523987 -62 46 51.675365388 4.34 5.11 5.11 4.87 4.79 B2III 120 0
61 * mu. Lup Be* 15 18 32.02296 -47 52 30.9957 3.82         B8Ve 112 0
62 * kap01 Aps Be* 15 31 30.8221293192 -73 23 22.529543604 4.60 5.37 5.49     B2Vnpe 126 0
63 * tet CrB Be* 15 32 55.78214 +31 21 32.8762 3.45 4.00 4.13 4.18 4.29 B6Vnne 297 0
64 HD 142184 Be* 15 53 55.8637866220 -23 58 41.143370530 4.77 5.352 5.402     B2V 261 1
65 * 4 Her Be* 15 55 30.5919435384 +42 33 58.291421364 5.23 5.64 5.75   5.82 B9pe 184 0
66 * 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
67 * chi Oph Be* 16 27 01.4355697915 -18 27 22.499961252 3.95 4.71 4.43 3.97 3.73 B2Vne 624 0
68 * tau Sco * 16 35 52.9528530 -28 12 57.661515 1.55 2.56 2.81 2.93 3.18 B0V 959 0
69 * 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
70 * iot Ara Be* 17 23 16.0762402440 -47 28 05.505681720 4.32 5.14 5.25 5.12 5.20 B1V 157 0
71 * alf Ara Be* 17 31 50.4915282 -49 52 34.122041 2.09 2.78 2.95 3.05 3.29 B2Vne 269 0
72 * z Her Be* 17 50 03.3345672768 +48 23 38.948985636 6.380 6.790 6.890     B6IIInp_sh 168 0
73 * 66 Oph Be* 18 00 15.7957050537 +04 22 07.122326765 3.77 4.58 4.60 4.47 4.49 B2Ve 358 0
74 HD 174237 Be* 18 46 43.0891606728 +52 59 16.654686648 5.06 5.80 5.90     B3+F5III 212 0
75 * lam Pav Be* 18 52 13.0338312065 -62 11 15.327318320 3.19 4.048 4.207     B2Ve 159 0
76 HD 178175 Be* 19 08 16.7018664360 -19 17 25.037957508 4.79 5.43 5.49 5.50 5.51 B2Ve 150 0
77 HD 183656 Be* 19 30 33.1219108488 +03 26 39.860267784 5.69 6.064 6.082     B7III 133 0
78 * kap Aql * 19 36 53.4488871022 -07 01 38.924816492 4.050 4.930 4.960 4.90 4.94 B0.5IIIn 354 0
79 * 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
80 * 20 Vul Be* 20 12 00.7015131216 +26 28 43.703768388 5.38 5.81 5.92     B7Ve 115 0
81 HD 194335 Be* 20 23 44.3690462664 +37 28 35.209455780 4.82 5.70 5.90     B2IIIe 161 0
82 * 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
83 * ups Cyg Be* 21 17 55.0858548408 +34 53 48.825463560 3.50 4.32 4.42 4.37 4.45 B2Vne 321 0
84 HD 203374 Be* 21 19 07.3685524992 +61 51 30.436799148 6.23 6.908 6.674     B0IVpe 135 0
85 * eps Cap Be* 21 37 04.8311169408 -19 27 57.640399810 3.69 4.35 4.55 4.60 4.74 B3V 266 0
86 HD 206773 Be* 21 42 24.1853979312 +57 44 09.795762276 6.30 7.10 6.87     B0V:pe 178 0
87 * eta PsA Be* 22 00 50.22537 -28 27 13.4639 4.96         B8III_sh+B8.5IV 106 0
88 * omi Aqr Be* 22 03 18.8440617830 -02 09 19.313835540 4.22 4.64 4.69 4.70 4.74 B5V 279 0
89 HD 209522 Be* 22 04 36.7663467696 -26 49 20.495440812 5.16 5.793 5.953     B4IVe 98 0
90 * 25 Peg Be* 22 07 50.3038755192 +21 42 10.536282684 5.27 5.68 5.78     B7Vne 119 0
91 * 31 Peg Be* 22 21 31.0751048 +12 12 18.662815 4.08 4.89 4.99 5.06 5.20 B3III 227 0
92 * 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
93 * eps PsA Be* 22 40 39.3482564136 -27 02 37.015051704 3.69 4.071 4.177     B7III 163 0
94 HD 217050 Be* 22 57 04.5020619144 +48 41 02.645623680 4.81 5.34 5.43     B4IIIpe 340 1
95 HD 217543 Be* 23 00 54.7485457920 +38 42 28.238625504 5.78 6.43 6.54     B2.5Vn 109 0
96 * 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
97 * bet Psc Be* 23 03 52.6132153632 +03 49 12.164302217 3.90 4.40 4.52 4.54 4.67 B6Ve 259 0
98 * 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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