2001A&A...371..932H

Query : 2001A&A...371..932H

2001A&A...371..932H - Astronomy and Astrophysics, volume 371, 932-942 (2001/6-1)

Hα emission line spectroscopy in NGC 330. On the hybrid model for global oscillations in Be star circumstellar disks.

HUMMEL W., GAESSLER W., MUSCHIELOK B., SCHINK H., NICKLAS H., CONTI G., MATTAINI E., KELLER S., MANTEL K.-H., APPENZELLER I., RUPPRECHT G., SEIFERT W., STAHL O. and TARANTIK K.

Abstract (from CDS):

We perform an observational test on global oscillations in Be star circumstellar disks in the metal deficient environment of the SMC. According to the hybrid model of disk oscillations early-type Be stars require an optically thin line force to establish a density wave. The low metallicity in the SMC should therefore diminish or prevent the formation of disk oscillations in early-type Be stars. We present short wavelength range spectra around Hα of 48 Be stars in the young open cluster NGC 330 in the SMC. We find that the fraction of early-type Be stars in NGC 330 which host a global disk oscillation does not differ from the known fraction of Galactic field Be stars. This observational result is in contradiction to the theoretical prediction. We discuss several interpretations and propose a further observational test.

Abstract Copyright: ∼

Journal keyword(s): line: formation, profiles - stars: circumstellar matter, emission-line, Be

Simbad objects: 70

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Number of rows : 70
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 11149 1
2 Cl* NGC 330 G 68 Be* 00 55 48.7650192264 -72 27 12.852089820 16.62 17.24 17.30   17.37 B5IV 4 0
3 Cl* NGC 330 G 59 Be* 00 55 52.2665751552 -72 26 03.880522428 16.19 17.07 17.07   17.07 B2IV 7 0
4 Cl* NGC 330 G 111 * 00 55 55.9 -72 25 20     18.824     ~ 2 0
5 [MA93] 893 Be* 00 55 59.9022819120 -72 26 21.423477228 14.54 15.45 15.51   15.51 B3III 8 0
6 Cl* NGC 330 G 109 Be* 00 56 01.510 -72 25 25.78   18.66 18.76     B9III 4 0
7 Cl* NGC 330 ELS 123 * 00 56 03.70 -72 27 12.8   15.57 15.79   15.945 O9.5V 17 0
8 Cl* NGC 330 G 78 * 00 56 06.21 -72 28 19.6   17.10 17.24   17.571 ~ 5 0
9 Cl* NGC 330 ARP 46 Em* 00 56 06.6504303432 -72 27 36.331899660   14.36 14.47 14.489 14.213 B1/B2II/IIIe 18 1
10 Cl* NGC 330 BAL 271 Be* 00 56 07.5110523384 -72 27 43.861538700 15.79 16.65 16.69   16.50 B2III-IV 11 0
11 Cl* NGC 330 G 96 * 00 56 09.02 -72 27 23.0   17.65 17.64   17.918 ~ 3 0
12 Cl* NGC 330 ARP 2 EB* 00 56 09.4223722008 -72 28 09.469886916 15.07 15.23 14.28   13.13 Mepec 27 0
13 OGLE SMC-SC7 206133 Em* 00 56 10.3062233184 -72 27 53.326047888   17.21 17.32   17.384 Be 4 0
14 Cl* NGC 330 G 31 Be* 00 56 11.77 -72 28 42.7 15.29 16.16 16.20   16.20 B2IV 5 0
15 Cl* NGC 330 ARP 44 Be* 00 56 12.1320541032 -72 27 17.073630432 14.24 15.15 15.21   15.18 B2III 15 0
16 Cl* NGC 330 G 108 * 00 56 13.4 -72 28 53     18.578     ~ 2 0
17 Cl* NGC 330 ARP 6 Be* 00 56 14.25 -72 28 30.0 14.94 15.81 15.90   15.82 B3III 17 0
18 LIN 303 Be* 00 56 14.9103329712 -72 28 47.666698428 14.41 15.28 15.35   15.29 B3II-III 17 0
19 Cl* NGC 330 KWBBE 233 * 00 56 17.1 -72 27 58     16.36     ~ 2 0
20 Cl* NGC 330 KWBBE 459 Be* 00 56 17.1918293722 -72 27 29.751308053   17.161 17.267   17.339 B5e 5 0
21 Cl* NGC 330 ARP 7 Pu* 00 56 17.7291515496 -72 28 32.536424928   15.54 15.60   15.554 ~ 11 0
22 OGLE SMC-SC7 205947 Be* 00 56 18.1441803648 -72 27 13.655282940 14.58 15.45 15.51   15.49 B2IV 14 0
23 NGC 330 Cl* 00 56 18.55 -72 27 45.1 9.37 9.76 9.55   8.89 ~ 410 0
24 Cl* NGC 330 G 77 * 00 56 18.93 -72 28 21.9   17.04 17.15   17.879 B3e 5 0
25 Cl* NGC 330 G 5 Be* 00 56 19.8836606664 -72 27 36.080580960   15.20 15.29   15.328 B3e 10 0
26 Cl* NGC 330 G 28 Be* 00 56 20.33 -72 28 06.7 14.75 15.77 15.65   16.16 B2IV 7 0
27 Cl* NGC 330 G 44 Be* 00 56 22.4263980432 -72 28 15.845772612   16.609 16.646   16.534 B5e 7 0
28 Cl* NGC 330 G 41 Be* 00 56 22.6088362032 -72 25 47.387688096   16.73 16.76     B2IV 6 0
29 Cl* NGC 330 G 38 Be* 00 56 23.1466098066 -72 27 35.852292098   16.26 16.41   16.557 B2e 6 0
30 Cl* NGC 330 G 64 * 00 56 23.3 -72 26 53     17.10     ~ 4 0
31 OGLE SMC-SC7 206113 Pu* 00 56 24.38 -72 27 56.9   16.70 16.61   16.863 ~ 3 0
32 OGLE SMC-SC7 206236 Be* 00 56 24.6337409088 -72 26 24.906788988 16.00 16.81 16.84   16.78 B2IV 7 0
33 Cl* NGC 330 ARP 27 Be* 00 56 25.4613952176 -72 27 07.167806172 14.38 15.32 15.36   15.34 B2III 21 0
34 OGLE SMC-SC7 206186 Pu* 00 56 25.8301608912 -72 27 30.960630720   17.13 17.23   17.157 ~ 4 0
35 Cl* NGC 330 ROB B41 Be* 00 56 26.60 -72 28 09.2 14.62 15.45 15.66   15.50 B2III 12 0
36 OGLE SMC-SC7 206167 Em* 00 56 27.17 -72 27 40.8   17.35 17.41   17.408 ~ 5 0
37 Cl* NGC 330 HSG F1 Be* 00 56 28.1856617808 -72 30 37.018298340 15.78 16.81 16.82   16.68 B1V 4 0
38 LIN 305 PN 00 56 30.750 -72 27 02.00   17.14 17.32   18.023 ~ 38 0
39 Cl* NGC 330 ROB B5 Be* 00 56 31.1608391376 -72 27 58.053588156 14.53 15.36 15.45   15.34 B3III 20 0
40 Cl* NGC 330 ROB B6 Be* 00 56 32.2789984224 -72 27 50.302399032   15.44 17.45   15.32 B1III 18 0
41 Cl* NGC 330 KWBBE 821 * 00 56 32.5 -72 26 05     16.72     ~ 3 0
42 Cl* NGC 330 ROB B9 Be* 00 56 33.1239444960 -72 27 05.126744916 15.22 15.97 16.05   16.07 B3III 13 0
43 Cl* NGC 330 G 115 Be* 00 56 33.898 -72 28 43.92   18.08 18.15     B5IV 4 0
44 Cl* NGC 330 KWBBE 799 * 00 56 38.5 -72 28 26     16.92     ~ 3 0
45 Cl* NGC 330 KWBBE 798 * 00 56 38.9 -72 29 48     17.30     ~ 3 0
46 Cl* NGC 330 SW 95 Be* 00 56 44.3422559544 -72 29 06.512775972 13.49 14.68 14.76   14.92 O6.5-7.5IIIe 16 0
47 Cl* NGC 330 KWBBE 754 Be* 00 56 54.0131946984 -72 28 50.361242700 16.05 16.96 16.96   16.86 B1IV 5 0
48 * 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 571 0
49 * 28 Tau Be* 03 49 11.2165977912 +24 08 12.156712008 4.73 5.01 5.09   5.08 B8Vne 468 0
50 * zet Tau Be* 05 37 38.6854231 +21 08 33.158804 2.22 2.84 3.03 3.06 3.15 B1IVe_shell 730 0
51 HD 41335 Be* 06 04 13.5003372120 -06 42 32.225392980 4.31 5.14 5.21 5.13 5.09 B1V 299 0
52 * 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 224 0
53 * bet Mon A Be* 06 28 49.0704018024 -07 01 59.013827328 3.87 4.50 4.60     B4Veshell 247 0
54 * 66 Oph Be* 18 00 15.7957050537 +04 22 07.122326765 3.77 4.58 4.60 4.47 4.49 B2Ve 347 0
55 Cl* NGC 330 ROB A20 * ~ ~     14.62     ~ 2 0
56 Cl* NGC 330 KBD 3-16 * ~ ~           ~ 1 0
57 Cl* NGC 330 KBD 4-31 * ~ ~           ~ 1 0
58 Cl* NGC 330 KBD 2-79 * ~ ~           ~ 1 0
59 Cl* NGC 330 G 114 * ~ ~           ~ 1 0
60 Cl* NGC 330 G 113 * ~ ~           ~ 1 0
61 Cl* NGC 330 G 112 * ~ ~           ~ 1 0
62 Cl* NGC 330 G 110 * ~ ~           ~ 1 0
63 Cl* NGC 330 A 30 * ~ ~           ~ 1 0
64 Cl* NGC 330 G 104 * ~ ~           ~ 1 0
65 Cl* NGC 330 G 99 * ~ ~           ~ 1 0
66 Cl* NGC 330 G 98 * ~ ~           ~ 1 0
67 Cl* NGC 330 G 84 * ~ ~           ~ 1 0
68 Cl* NGC 330 G 71 * ~ ~           ~ 1 0
69 Cl* NGC 330 G 56 * ~ ~           ~ 1 0
70 Cl* NGC 330 G 51 * ~ ~           ~ 1 0

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