1995A&AS..111..423B

Query : 1995A&AS..111..423B

1995A&AS..111..423B - Astron. Astrophys., Suppl. Ser., 111, 423-455 (1995/June-2)

High-resolution spectroscopy of southern and equatorial Be stars: flux excess at λ4471 A.

BALLEREAU D., CHAUVILLE J. and ZOREC J.

Abstract (from CDS):

We present a catalogue of high-resolution He I 4471, Mg II 4481 and Hγ line profiles observed simultaneously for 37 southern and equatorial Be stars. In this paper we focus on the He I 4471 line, which is studied using non-LTE model line profiles. A systematic difference is found between the observed and the theoretical He I 4471 line equivalent widths. This difference strongly correlates with the Hγ emission and we interpret it as being due mainly to the veiling effect produced by the continuum emission excess originating in the circumstellar envelope. To determine the continuum flux excess we use two methods. One method enables us to obtain simultaneously the V sin i parameter. The flux excess we determined is overestimated by about 9% on average, because in the line profile analysis we neglected the gravity darkening effect due to stellar rotation. We find that 14 program stars present two possible solutions for V sin i. The second solution is, on average, 14% smaller and produces a small residual or emission-like difference between the observed He I 4471 line profile and the model profile.

Abstract Copyright: ∼

Journal keyword(s): line profile - stars: emission-line, Be - stars: atmosphere - atlases

Simbad objects: 39

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Number of rows : 39
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 * 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
2 * 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
3 * 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
4 * ome Ori Be* 05 39 11.1457980782 +04 07 17.288290296 3.73 4.48 4.59 4.57 4.67 B3Ve 424 1
5 HD 41335 Be* 06 04 13.5003372120 -06 42 32.225392980 4.31 5.14 5.21 5.13 5.09 B1V 314 0
6 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
7 * 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
8 * bet Mon A Be* 06 28 49.0704018024 -07 01 59.013827328 3.87 4.50 4.60     B4Veshell 253 0
9 HD 47054 Be* 06 36 35.3296522656 -05 12 40.103033112 5.05 5.44 5.52     B8IVe 108 0
10 * 10 CMa Be* 06 44 28.4671043496 -31 04 13.892357820 4.18 5.08 5.17 5.15 5.17 B2V 150 0
11 * 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
12 * eps CMa * 06 58 37.54876 -28 58 19.5102 0.36 1.29 1.50 1.59 1.80 B1.5II 519 0
13 HD 54309 Be* 07 07 22.5873962184 -23 50 26.573827884 4.83 5.68 5.83 5.83 5.95 B3Vne 140 0
14 * 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
15 * ups02 Pup Be* 07 18 38.1853955232 -36 44 33.854932104 4.28 4.95 5.11 5.17 5.38 B3Vne 127 1
16 HD 58343 Be* 07 24 40.1873324160 -16 12 05.302248804 4.52 5.15 5.19 5.05 5.06 B2Vne 222 0
17 HD 58978 Be* 07 26 59.4826856664 -23 05 09.689679528 4.51 5.45 5.56 7.05   B0.5IVe 248 0
18 * z Pup Be* 07 33 51.0415389912 -36 20 18.212736408 4.67 5.37 5.44 5.33 5.32 B2Vne 135 0
19 * omi Pup Be* 07 48 05.1686329933 -25 56 13.810593657 3.42 4.43 4.49 4.37 4.37 B1IVe 228 0
20 HD 66194 Be* 07 58 50.5509433080 -60 49 28.060460040 4.92 5.72 5.81 5.77 5.83 B3Vn 153 0
21 * r Pup Be* 08 13 29.5172754003 -35 53 58.265647773 3.68 4.66 4.77 4.68 4.77 B1V 199 0
22 * 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
23 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
24 * I Hya Be* 09 41 17.0067101149 -23 35 29.451517089 4.07 4.65 4.76 4.75 4.84 B5V 182 0
25 HD 86612 Be* 09 59 06.3044206872 -23 57 02.767063320 5.51 6.13 6.25 6.14 6.19 B5IVe 104 0
26 HD 88661 Be* 10 11 46.4595963216 -58 03 37.958712444 4.77 5.66 5.75 5.66 5.70 B5Vne 161 0
27 HD 91120 Be* 10 30 59.8371178656 -13 35 18.495281472 5.38 5.54 5.58     B9IIIe 111 0
28 * p Car Be* 10 32 01.4650915230 -61 41 07.195030368 2.46 3.18 3.27 3.22 3.28 B4Vne 243 0
29 * del Cen Be* 12 08 21.4976373 -50 43 20.738614 1.51 2.39 2.52 2.48 2.62 B2Vne 320 0
30 HD 110432 HXB 12 42 50.2663572384 -63 03 31.052981412 4.79 5.58 5.31     B0.5IVpe 334 0
31 * 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
32 * lam Cru Be* 12 54 39.1827302030 -59 08 48.129223088 3.86 4.451 4.602     B3Vne 150 1
33 HD 113120 Be* 13 03 05.3358171458 -71 28 32.642280570 5.21 6.08 6.03     B2IVne 132 0
34 * mu. Cen Be* 13 49 36.9886872492 -42 28 25.440271450 2.37 3.27 3.43 3.41 3.50 B2Vnpe 453 0
35 HD 124367 Be* 14 14 57.1383087504 -57 05 10.049405532 4.36 4.99 5.07     B4Vne 153 0
36 * eta Cen Be* 14 35 30.4241610 -42 09 28.170782 1.30 2.12 2.31 2.41 2.59 B2Ve 361 1
37 * 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
38 * chi Oph Be* 16 27 01.4355697915 -18 27 22.499961252 3.95 4.71 4.43 3.97 3.73 B2Vne 624 0
39 * 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

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