1999A&A...352L..31H

Query : 1999A&A...352L..31H

1999A&A...352L..31H - Astronomy and Astrophysics, volume 352, L31-35 (1999/12-1)

A spectroscopic study of Be stars in the SMC cluster NGC 330.

HUMMEL W., SZEIFERT T., GAESSLER W., MUSCHIELOK B., SEIFERT W., APPENZELLER I. and RUPPRECHT G.

Abstract (from CDS):

We present a spectroscopic study of early type emission line stars in the field of the young open SMC cluster NGC 330 which have been identified as Be stars by CCD imaging photometry by Grebel et al. (1992A&A...254L...5G). 18 of the 20 program stars investigated can be confirmed to show Balmer emission lines superimposed on an early type spectrum. Two new Be stars in the field of NGC 330 have been detected. Hα emission equivalent width, FWHM and profile shapes (as far as resolved) do not differ from galactic Be stars, hence we suggest that rotation axis of Be stars in NGC 330 are not aligned, rather they are distributed randomly. Quantitative spectral analysis for Be40 and Be59 results in Teff=18000±1500K, logg=3.3±0.2 and Teff=17000±1500K, logg=3.1±0.2 respectively.

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

Nomenclature: Table 2: Cl* NGC 330 G NNN N=22 among N>115. Table 2: Cl* NGC 330 HSG FN (Nos F1-F2).

Simbad objects: 25

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Number of rows : 25
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     ~ 11146 1
2 Cl* NGC 330 G 40 Be* 00 55 34.6441654128 -72 29 13.301551500 15.71 16.48 16.61   16.75 B2/8e 6 0
3 [MA93] 864 Be* 00 55 40.1331235560 -72 26 41.806132440 15.49 16.45 16.34   16.33 B2III-IV 8 0
4 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
5 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
6 Cl* NGC 330 G 111 * 00 55 55.9 -72 25 20     18.824     ~ 2 0
7 [MA93] 893 Be* 00 55 59.9022819120 -72 26 21.423477228 14.54 15.45 15.51   15.51 B3III 8 0
8 Cl* NGC 330 G 109 Be* 00 56 01.510 -72 25 25.78   18.66 18.76     B9III 4 0
9 Cl* NGC 330 G 78 * 00 56 06.21 -72 28 19.6   17.10 17.24   17.571 ~ 5 0
10 [MA93] 906 Ae* 00 56 06.4513637040 -72 28 27.893294436   17.63 17.13   16.330 B[e] 20 0
11 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
12 Cl* NGC 330 G 96 * 00 56 09.02 -72 27 23.0   17.65 17.64   17.918 ~ 3 0
13 Cl* NGC 330 G 108 * 00 56 13.4 -72 28 53     18.578     ~ 2 0
14 NGC 330 Cl* 00 56 18.55 -72 27 45.1 9.37 9.76 9.55   8.89 ~ 410 0
15 Cl* NGC 330 G 77 * 00 56 18.93 -72 28 21.9   17.04 17.15   17.879 B3e 5 0
16 OGLE SMC-SC7 206326 Em* 00 56 20.1170 -72 28 22.155   17.875 17.972   17.815 ~ 2 0
17 Cl* NGC 330 G 41 Be* 00 56 22.6088362032 -72 25 47.387688096   16.73 16.76     B2IV 6 0
18 Cl* NGC 330 ARP 15 Be* 00 56 23.0340876720 -72 27 54.067829184 14.06 15.06 14.98   15.24 B2III 14 0
19 Cl* NGC 330 G 64 * 00 56 23.3 -72 26 53     17.10     ~ 4 0
20 OGLE SMC-SC7 206236 Be* 00 56 24.6337409088 -72 26 24.906788988 16.00 16.81 16.84   16.78 B2IV 7 0
21 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
22 OGLE SMC-ECL- 7185 EB* 00 56 28.23 -72 28 33.5     18.051   18.165 ~ 3 0
23 Cl* NGC 330 HSG F2 * 00 56 28.8 -72 28 33           ~ 1 0
24 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
25 Cl* NGC 330 G 115 Be* 00 56 33.898 -72 28 43.92   18.08 18.15     B5IV 4 0

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