1998A&AS..129..289M

Query : 1998A&AS..129..289M

1998A&AS..129..289M - Astron. Astrophys., Suppl. Ser., 129, 289-311 (1998/April-2)

Long-term visual spectrophotometric behaviour of Be stars.

MOUJTAHID A., ZOREC J., HUBERT A.M., GARCIA A. and BURKI G.

Abstract (from CDS):

The long-term spectrophotometric variations of 49 Be stars are studied using the U and V magnitudes of the UBV system, the total Balmer discontinuity D and the visible gradient {PHI}rb. BCD spectrophotometric and photometric data in five different photometric systems, obtained in most cases since 1950 and reduced to the BCD system, were used. The (U,D), (V,D), ({PHI}rb,D) and ({PHI}rb,V) correlations obtained differ from star to star and they can be single or double-valued. They differ clearly for Be phases or Be-shell phases. Be stars with small Vsin i showing the "spectrophotometric shell behaviour": D>D*, were found. This finding implies either that strongly flattened models of circumstellar envelopes are in doubt for these stars, or that not all Be stars are rapid rotators. Comparison of observed variations with those predicted for model Be stars with spherical circumstellar envelopes of variable densities and dimensions implies that spectrophotometric patterns of Be phases are due to circumstellar envelopes in low opacity regimes, while those of spectrophotometric shell phases are due to circumstellar envelopes in high opacity regimes. In a given star, the envelope regions responsible for the observed variations of D and {PHI}rb in spectrophotometric shell phases seem to be smaller and denser than those producing the observed variations of these parameters in spectrophotometric Be phases. The high positive RV found in strong shell phases might favor the formation of compact circumstellar layers near the star.

Abstract Copyright: ∼

Journal keyword(s): stars: variable - stars: Be

VizieR on-line data: <Available at CDS (J/A+AS/129/289): stars.dat table1.dat refs.dat fig/*>

Simbad objects: 131

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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 * gam Peg bC* 00 13 14.1523490172 +15 11 00.954346538 1.75 2.61 2.84 2.94 3.13 B2IV 720 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 * 68 Cas Pu* 00 44 26.1915514056 +47 51 50.342883408   5.520 5.648     B5V 113 0
4 * omi Cas Be* 00 44 43.5186007265 +48 17 03.731037403 3.91 4.44 4.50 4.45 4.50 B5IIIe 291 0
5 * 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
6 * 1 Per SB* 01 51 59.3200840608 +55 08 50.583693732 4.51 5.34 5.52     B1.5V 156 0
7 * del Cet bC* 02 39 28.9568473856 +00 19 42.631195332 2.97 3.85 4.07     B2IV 395 0
8 * bet Per SB* 03 08 10.1324535 +40 57 20.328013 1.70 2.07 2.12 2.08 2.11 B8V 1265 1
9 * 29 Per Pu* 03 18 37.7416927200 +50 13 19.834697676 6.232 5.074 5.157     B3V 167 0
10 * 31 Per Pu* 03 19 07.6392847536 +50 05 41.889763428 4.44 4.962 5.032     B5V 146 0
11 HD 21071 Pu* 03 25 57.3820460520 +49 07 14.729885580 5.53 6.02 6.09     B7V 180 0
12 HD 21278 SB* 03 28 03.0707602272 +49 03 46.325803896   4.89 4.97     B5V 220 0
13 * 34 Per * 03 29 22.0494961351 +49 30 32.230623601 4.01 4.610 4.735     B3V 172 0
14 HD 21856 Pu* 03 32 40.0150232424 +35 27 42.207495156 4.96 5.807 5.900     B1V 192 0
15 * o Per * 03 42 22.6459308614 +33 57 54.093701142 4.13 4.912 4.972     B0.5V 315 0
16 * del Per Be* 03 42 55.4928046977 +47 47 14.988257477 2.38 2.89 3.01 2.99 3.10 B5III 328 0
17 * 16 Tau V* 03 44 48.2149362048 +24 17 22.083331452 5.09 5.42 5.46 5.42 5.47 B7V 272 0
18 * q Tau SB* 03 45 12.4999931614 +24 28 02.185543730 3.73 4.19 4.30 4.30 4.40 B6IV 288 0
19 * 20 Tau PM* 03 45 49.6081548365 +24 22 03.877565838 3.40 3.80 3.87 3.85 3.90 B7III 451 1
20 * 21 Tau PM* 03 45 54.4764507648 +24 33 16.235698248 5.49 5.72 5.76 5.71 5.74 B8V 234 0
21 HD 23753 PM* 03 48 20.8167826752 +23 25 16.495877028 5.06 5.38 5.45 5.42 5.48 B8V 194 0
22 * 27 Tau SB* 03 49 09.7430578114 +24 03 12.301679809 3.18 3.54 3.63 3.62 3.68 B8III 387 0
23 * 28 Tau Be* 03 49 11.2165977912 +24 08 12.156712008 4.73 5.01 5.09   5.08 B8Vne 494 0
24 HD 23923 * 03 49 43.5315887616 +23 42 42.667696476   6.104 6.153   6.18 B8.5V 173 0
25 HD 24131 * 03 51 53.7187356648 +34 21 32.823349956 4.96 5.730 5.772     B1V 183 0
26 V* X Per HXB 03 55 23.0777456088 +31 02 45.039836148 6.090 6.840 6.720     O9.5III 1037 0
27 HD 24640 Ce* 03 56 28.6917914309 +35 04 51.215445412 4.7 5.426 5.488     B1.5V 138 1
28 * eps Per bC* 03 57 51.2393818140 +40 00 36.719213615 1.71 2.71 2.89 2.96 3.14 B0.5III 533 0
29 HD 25639 * 04 07 51.3928669512 +62 19 48.385984944 6.87 7.24 6.86     B0III 130 0
30 * c Per Be* 04 08 39.6935695869 +47 42 45.038007366 3.45 4.00 4.03 3.91 3.93 B3Ve 394 0
31 * 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
32 * mu. Eri SB* 04 45 30.1514281206 -03 15 16.775320589 3.26 3.87 4.00     B5IV 170 0
33 * 11 Cam Be* 05 06 08.4527318736 +58 58 20.543222820 4.31 5.00 5.08     B3Ve 221 0
34 * eta Aur PM* 05 06 30.8941413263 +41 14 04.112669983 2.33 3.00 3.18 3.23 3.40 B3V 391 0
35 * 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
36 * psi01 Ori Be* 05 24 44.8273848312 +01 50 47.201915688 3.83 4.76 4.96 5.04 5.26 B1Vn 372 0
37 * gam Ori V* 05 25 07.86325 +06 20 58.9318 0.54 1.42 1.64 1.73 1.95 B2III 542 1
38 HD 35600 s*b 05 27 08.2723588272 +30 12 30.969836964 5.56 5.861 5.720     B9Ib 88 0
39 * chi Aur s*b 05 32 43.6743764213 +32 11 31.280527096 4.68 5.15 4.79 4.42 4.15 B4Ia 219 0
40 HD 36959 Y*O 05 35 01.0070120496 -06 00 33.366713364 4.52 5.33 5.53     B1V 223 0
41 HD 36960 * 05 35 02.6823091513 -06 00 07.308349203 3.52 4.50 4.72     B0.5V 283 0
42 HD 37016 ** 05 35 22.3136951928 -04 25 27.524552412 5.4         B9III/IV 120 0
43 * iot Ori SB* 05 35 25.9861932063 -05 54 35.598684624 1.45 2.53 2.77     O9IIIvar 793 0
44 HD 37040A * 05 35 31.0756116265 -04 21 50.563049764   6.31 6.45     B3V 97 0
45 HD 37040 ** 05 35 31.0791596 -04 21 50.577378 5.50 6.24 6.38     B3V+B7V 100 0
46 HD 37209A bC? 05 36 35.6933463600 -06 03 53.102455123 4.61 5.535 5.750     B2IV 142 0
47 * 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
48 HD 37481 bC? 05 38 37.9735682376 -06 34 26.246963640 4.82 5.73 5.96     B1.5IV 141 0
49 * sig Ori Y*O 05 38 44.7653828520 -02 36 00.283179888 2.54 3.58 3.79 3.87 4.11 O9.5V+B0.2V(n) 855 0
50 HD 37744 V* 05 40 37.2968503824 -02 49 30.852237396 5.14 6.02 6.22     B1.5V 164 0
51 HD 37967 Be* 05 43 19.5024321168 +23 12 15.748208100 5.51 6.15 6.21     B4Ve 112 0
52 * mu. Col V* 05 45 59.8950238944 -32 18 23.162261796 3.84 4.90 5.18 5.30 5.57 O9.5V 523 0
53 * 139 Tau s*b 05 57 59.6569390499 +25 57 14.083803544 3.82 4.76 4.82 4.76 4.87 B1Ia 290 0
54 HD 40589 sg* 06 01 00.4535810760 +27 34 20.501820480 6.06 6.250 6.040     A0Iab 75 0
55 * nu. Ori SB* 06 07 34.3251233989 +14 46 06.510739548 3.6 4.240 4.397     B3IV 239 0
56 HD 43112 * 06 15 08.4727512648 +13 51 03.959285616 4.7 5.676 5.894     B1V 126 0
57 * 9 Gem s*b 06 16 58.7058631680 +23 44 27.284070336 6.31 6.70 6.25 5.78 5.38 B3Iab 253 0
58 * 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
59 HD 45563 * 06 28 16.7675500392 +01 54 45.642111408   6.403 6.450     B9IV 56 1
60 HD 46075 * 06 31 39.3798829272 +11 47 32.175475836   6.53 6.65     B8IV 53 0
61 HD 47240 Pu* 06 37 52.7038930896 +04 57 24.003132228 5.65 6.35 6.20 5.98 5.87 B1Ib 167 0
62 HD 47432 Pu* 06 38 38.1872868432 +01 36 48.675208608 5.67 6.44 6.31 6.11 6.04 O9.7Ib 194 1
63 HD 47756 * 06 40 31.9464201288 +06 22 16.506295536 5.91 6.358 6.498     B8pSiCrSr 77 0
64 HD 47964 ** 06 41 05.4409639536 +00 29 43.160425584 5.32 5.669 5.765     B8III 67 0
65 HD 48434 s*b 06 43 38.6456583720 +03 55 57.109225980 4.99 5.88 5.90     B0III 166 0
66 * 10 CMa Be* 06 44 28.4671043496 -31 04 13.892357820 4.18 5.08 5.17 5.15 5.17 B2V 150 0
67 V* V505 Mon SB* 06 45 49.9771800456 +02 29 57.397214904 6.85 7.16 7.22     B6Ib 64 0
68 * 16 Mon SB* 06 46 32.4145190352 +08 35 13.767386136   5.76 5.92     B3V 99 0
69 HD 49567 * 06 49 03.6560827200 +01 00 07.442689536 5.34 6.001 6.150     B3III 81 0
70 V* HZ CMa Be* 06 50 23.3482557912 -31 42 21.808309320   5.829 5.747     B6IVe+A 96 0
71 * 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
72 * 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
73 HD 58050 Be* 07 24 27.6487438296 +15 31 01.908288624 5.39 6.23 6.41     B2Ve 138 0
74 HD 58978 Be* 07 26 59.4826856664 -23 05 09.689679528 4.51 5.45 5.56 7.05   B0.5IVe 248 0
75 HD 60855 Be* 07 36 03.8931067344 -14 29 33.978895368 4.87 5.58 5.70 5.72 5.81 B2Ve 160 0
76 HD 60848 Be* 07 37 05.7325392528 +16 54 15.300327852 5.55 6.67 6.87     O8:V:pe 150 0
77 * omi Pup Be* 07 48 05.1686329933 -25 56 13.810593657 3.42 4.43 4.49 4.37 4.37 B1IVe 228 0
78 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
79 * r Pup Be* 08 13 29.5172754003 -35 53 58.265647773 3.68 4.66 4.77 4.68 4.77 B1V 199 0
80 * 30 Mon PM* 08 25 39.6318651278 -03 54 23.137987255 3.85 3.88 3.90 3.87 3.92 A0Va 289 0
81 * eta Hya bC* 08 43 13.4757536071 +03 23 55.182801587 3.380 4.100 4.300 4.37 4.56 B3V 418 1
82 * kap Hya V* 09 40 18.3631874929 -14 19 56.239612796   4.909 5.052     B3/5IV/V 165 0
83 * I Hya Be* 09 41 17.0067101149 -23 35 29.451517089 4.07 4.65 4.76 4.75 4.84 B5V 182 0
84 * alf Leo PM* 10 08 22.31099 +11 58 01.9516 0.88 1.24 1.40 1.37 1.47 B8IVn 891 1
85 * J Vel Be* 10 20 54.7957129824 -56 02 35.655748188 3.80 4.38 4.51 6.02   B5II 112 0
86 HD 91120 Be* 10 30 59.8371178656 -13 35 18.495281472 5.38 5.54 5.58     B9IIIe 111 0
87 * p Car Be* 10 32 01.4650915230 -61 41 07.195030368 2.46 3.18 3.27 3.22 3.28 B4Vne 243 0
88 * 90 Leo ** 11 34 42.49024 +16 47 48.8956 5.150 5.780 5.940     B6.6(IV)+B3.7(V) 152 0
89 * kap Dra Be* 12 33 28.9433168544 +69 47 17.659892220 3.18 3.75 3.89 3.84 3.92 B6IIIe 395 0
90 * eta UMa PM* 13 47 32.43776 +49 18 47.7602 0.99 1.67 1.86 1.98 2.16 B3V 630 0
91 HD 120991 Be* 13 53 57.2397645360 -47 07 41.390612184 5.11 6.03 6.10 6.24 6.34 B2Ve 145 0
92 * tet Cir Be* 14 56 43.9850523987 -62 46 51.675365388 4.34 5.11 5.11 4.87 4.79 B2III 120 0
93 * 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
94 * tau Her Pu* 16 19 44.4367980146 +46 18 48.102135319 3.190 3.73 3.87 4.00 4.16 B5V 417 0
95 * chi Oph Be* 16 27 01.4355697915 -18 27 22.499961252 3.95 4.71 4.43 3.97 3.73 B2Vne 624 0
96 * iot Her bC* 17 39 27.8868980278 +46 00 22.792978043 2.940 3.630 3.800     B3IV 470 1
97 HD 162428 Be* 17 50 01.2322158096 +24 28 05.086357032   7.016 7.098     B7IV/Vn(e)_(sh) 44 0
98 * z Her Be* 17 50 03.3345672768 +48 23 38.948985636 6.380 6.790 6.890     B6IIInp_sh 168 0
99 * 102 Her * 18 08 45.4919267342 +20 48 52.404584093 3.38 4.177 4.347     B2IV 194 0
100 HD 168797 Be* 18 21 28.4010720600 +05 26 08.560470876 5.47 6.09 6.13     B2Vne 127 0
101 HD 171780 Be* 18 35 13.5051822840 +34 27 28.868125500 5.44 5.975 6.088     B5Ve 85 0
102 HD 173219 Be* 18 44 33.3405747264 -07 06 38.163359880 7.26 8.00 7.88     B1:V:npe 88 0
103 HD 178175 Be* 19 08 16.7018664360 -19 17 25.037957508 4.79 5.43 5.49 5.50 5.51 B2Ve 150 0
104 HD 183656 Be* 19 30 33.1219108488 +03 26 39.860267784 5.69 6.064 6.082     B7III 133 0
105 HD 184279 Be* 19 33 36.9185843448 +03 45 40.793081472 6.63 7.00 7.00     B0V 153 0
106 * kap Aql * 19 36 53.4488871022 -07 01 38.924816492 4.050 4.930 4.960 4.90 4.94 B0.5IIIn 354 0
107 * 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
108 * b02 Cyg Be* 20 09 25.6190611128 +36 50 22.633958400 4.03 4.80 4.93     B2.5Ve 281 0
109 * tet Aql SB* 20 11 18.2866917111 -00 49 17.268937491 3.03 3.15 3.22 3.29 3.33 B9.5III 206 1
110 * 1 Del ** 20 30 17.96064 +10 53 45.3233 5.94 6.05 6.08     A1:III 109 0
111 * 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
112 * sig Cyg s*b 21 17 24.9522700076 +39 23 40.847039148 3.98 4.37 4.24 4.06 3.92 B9Iab 272 0
113 * 69 Cyg s*b 21 25 47.0250895464 +36 40 02.584183260 4.89 5.86 5.94     B0.2Iab 207 0
114 * 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
115 * eps Cap Be* 21 37 04.8311169408 -19 27 57.640399810 3.69 4.35 4.55 4.60 4.74 B3V 266 0
116 * 9 Cep s*b 21 37 55.2241394424 +62 04 54.990376788 4.49 5.03 4.73 4.42 4.24 B2Ib 315 0
117 HD 208218 Y*? 21 52 35.1450252744 +62 42 43.819015428 6.3 6.894 6.708     B1III 77 0
118 HD 208440 Y*? 21 53 53.2978442568 +62 36 00.753455268 7.24 7.93 7.91     B1V 105 0
119 HD 209339 ** 22 00 39.2649125112 +62 29 16.063886004 5.9 8.73 8.51 7.61   O9.7IV 196 0
120 V* V365 Lac SB* 22 05 51.2185933968 +48 13 53.377700088 5.5 6.160 6.254     B2V 101 0
121 * 25 Peg Be* 22 07 50.3038755192 +21 42 10.536282684 5.27 5.68 5.78     B7Vne 119 0
122 HD 212978 ** 22 27 26.4985235856 +39 48 36.093227436 5.23 6.00 6.16     B2V 119 0
123 HD 214240 SB* 22 35 53.3825016096 +50 04 14.837285784 5.7 6.199 6.275     B3V 86 0
124 * 10 Lac ** 22 39 15.6786372 +39 03 00.971152 3.650 4.670 4.880 4.98 5.19 O9V 790 0
125 PN M 1-80 PN 22 56 19.89864 +57 09 20.8656           ~ 99 2
126 HD 217101 * 22 57 40.7378078160 +39 18 31.592840184 5.23 6.03 6.18     B2IV-V 123 0
127 HD 217543 Be* 23 00 54.7485457920 +38 42 28.238625504 5.78 6.43 6.54     B2.5Vn 109 0
128 * 1 Cas * 23 06 36.8177774777 +59 25 11.135356051 3.93 4.771 4.840     B0.5III 254 0
129 HD 218407 SB* 23 07 17.9993119296 +46 04 05.327603220 5.93 6.585 6.654     B2V 98 0
130 HD 218674 Be* 23 09 16.7457089472 +49 39 02.225619216 6.17 6.700 6.748     B4V(e) 92 0
131 * iot And Pu* 23 38 08.2003054524 +43 16 05.062997840 3.90 4.18 4.29 4.29 4.38 B8V 169 0

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