2004PASP..116..909E

Query : 2004PASP..116..909E

2004PASP..116..909E - Publ. Astron. Soc. Pac., 116, 909-919 (2004/October-0)

The ultraviolet and optical spectra of luminous B-type stars in the Small Magellanic Cloud.

EVANS C.J., LENNON D.J., WALBORN N.R., TRUNDLE C. and RIX S.A.

Abstract (from CDS):

We present ultraviolet spectra from the Space Telescope Imaging Spectrograph (STIS) of 12 early B-type stars in the Small Magellanic Cloud (SMC), composed of nine supergiants and three giants. A morphological comparison with Galactic analogs is made using archival data from the International Ultraviolet Explorer (IUE). In general, the intensity of the P Cygni emission in the UV resonance lines is greater and is seen to later spectral types in the Galactic spectra than in their metal-deficient SMC counterparts. We attribute these effects as most likely arising from weaker stellar winds in the SMC targets, as predicted by radiatively driven wind theory. We also include unpublished STIS observations of two late O-type stars in the SMC. In combination with published O-type STIS data, we now have an extensive ultraviolet spectral library of metal-deficient stars to use in the study of unresolved starbursts and high-redshift star-forming galaxies. In this context, we present empirical measurements for the B-type spectra of the new ``1978 index'' suggested by Rix et al. as a probe of metallicity in such systems.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Individual: Name: Small Magellanic Cloud - Stars: Fundamental Parameters - Stars: Winds, Outflows - Stars: Early-Type

Simbad objects: 48

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Number of rows : 48
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 SK 10 s*b 00 46 42.1591125672 -73 24 55.494317340 11.903 12.984 13.176   13.35 O6.5III(f) 56 0
2 SK 13 s*b 00 47 12.2164410744 -73 06 33.111710784   12.52 12.48     B1.5Ia 83 0
3 BBB SMC 259 s*b 00 47 38.7409708152 -73 07 48.851948496   12.17 12.24     B3Ia 43 0
4 AzV 47 * 00 48 51.4911440520 -73 25 58.537753356 12.263 13.314 13.496   14.00 O8III((f)) 45 0
5 BBB SMC 1 * 00 50 17.2067283312 -72 53 30.259838832 12.093 13.144 13.326 13.39 13.47 OC7III 52 0
6 LIN 156 s*b 00 50 32.4050818488 -72 52 36.441355908 11.553 12.604 12.756   12.89 O5.5I(f) 58 0
7 AzV 80 * 00 50 43.8139294080 -72 47 41.547243120 12.22 13.24 13.376   13.59 O6IIInn(f)p 42 0
8 AzV 83 s*b 00 50 52.0015192368 -72 42 14.940550980 12.233 13.244 13.366   13.67 O7Iaf 58 0
9 AzV 95 * 00 51 21.6002057448 -72 44 14.875230300 12.67 13.64 13.83   13.95 O7.5III((f)) 53 0
10 AzV 104 s*b 00 51 38.4279675528 -72 48 06.081643404 12.053 13.064 13.226   13.57 B0.5Ia 43 0
11 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
12 AzV 170 s*b 00 55 42.4299731736 -73 17 30.523500780 12.86 13.82 14.11   14.25 O9.7I 41 0
13 Cl* NGC 330 ARP 45 s*b 00 56 10.0781111880 -72 27 32.553003924 13.2 14.15 14.29   14.444 B2IIe 26 0
14 NGC 330 Cl* 00 56 18.55 -72 27 45.1 9.37 9.76 9.55   8.89 ~ 445 0
15 Cl* NGC 330 ARP 8 s*b 00 56 20.8056348480 -72 28 34.134249540 12.043 12.364 12.656   13.62 B2.5Ib 32 0
16 Cl* NGC 330 ARP 14 s*b 00 56 24.8626714248 -72 27 41.928918516 12.07 12.85 12.93   12.972 B3Ib 26 0
17 Cl* NGC 330 ARP 13 * 00 56 25.8972816504 -72 27 53.471397096   14.52 14.71 14.967 14.883 B0.5Ve 20 0
18 Cl* NGC 346 MPG 12 * 00 58 14.0865065520 -72 10 44.292892764   19.15 17.98   16.72 B0III 43 0
19 Cl* NGC 346 ELS 28 * 00 58 31.7543622456 -72 10 57.965696544 13.58 14.73 14.94   15.23 OC6Vz 33 0
20 SK 73 s*b 00 58 35.7838206672 -72 16 25.018020660 11.73 12.63 12.66   12.69 B1Iab-Ib 38 0
21 SK 76 s*b 00 58 55.6254525024 -72 32 08.467356804 11.64 12.65 12.75   12.84 BN0Ia 52 0
22 Cl* NGC 346 ELS 7 * 00 58 57.3961905528 -72 10 33.660822720 12.68 13.82 14.13   14.28 O4V((f+)) 61 0
23 AzV 216 EB* 00 58 59.1397025928 -72 44 34.125224352 13.11 14.15 14.32 14.49 14.56 B0IIw 43 0
24 Cl* NGC 346 W 3 * 00 59 00.7591806336 -72 10 28.171806492 11.46 12.61 12.80   13.63 O2III(f) 69 0
25 Cl* NGC 346 NMC 28 * 00 59 01.8187292184 -72 10 31.216864152   13.95 14.18     O5.5V((f+)) 38 0
26 Cl* NGC 346 NMC 17 * 00 59 06.7498587648 -72 10 41.262204828 13.05 14.19 14.33   14.60 O8V 26 0
27 AzV 220 s*b 00 59 09.9690896976 -72 05 48.278525460 13.13 14.24 14.51   14.73 O7If 43 0
28 RMC 28 s*b 01 03 10.5480205584 -72 02 14.335031256 11.833 12.924 13.086   13.60 O9.7Ib 52 0
29 RMC 36 s*b 01 04 49.3494336384 -72 06 21.746153556 10.57 11.34 11.36     B3Ia 58 0
30 SK 132 s*b 01 07 40.3905611664 -72 51 00.061708428 12.08 13.13 13.31 13.30 13.45 O9.5II(n) 49 0
31 WDG 1 s*b 01 41 42.0683863272 -73 50 38.183979624   11.86 11.84     B1.5Ia 74 0
32 * 10 Per s*b 02 25 16.0283450208 +56 36 35.354429280 5.95 6.56 6.26 5.93 5.74 B2Ia 248 0
33 NAME NGC 1705 CL* A Cl* 04 54 13.24 -53 21 36.1           ~ 42 0
34 NGC 1705 Sy2 04 54 13.4661493464 -53 21 39.471592428 12.32 12.96 12.56 12.58 12.9 ~ 692 1
35 * 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
36 * kap Ori s*b 05 47 45.3888404 -09 40 10.577707 0.87 1.88 2.06 2.09 2.27 B0.5Ia 588 0
37 * iot CMa s*b 06 56 08.2245944314 -17 03 15.259069948 3.62 4.297 4.385 6.40   B3Ib 184 0
38 * eta CMa s*b 07 24 05.70228 -29 18 11.1798 1.65 2.37 2.45 2.38 2.44 B5Ia 379 0
39 HD 91969 * 10 35 49.3174367088 -58 13 27.414688080 5.57 6.41 6.43 7.56   B0I+ 124 0
40 HD 96248 s*b 11 04 57.5664906864 -59 51 32.045356224 5.97 6.728 6.571 7.49   B1Iab 115 0
41 * kap Cru SB* 12 53 48.9198156672 -60 22 34.469837436 5.62 6.12 5.94 7.12   B5I 133 0
42 HD 141381 * 15 49 27.9050478336 -19 36 51.791582412   11.07 10.64     A0/1III 8 0
43 HD 141318 Pu* 15 51 06.8041626360 -55 03 19.928655972 5.13 5.756 5.767 7.08   B2III 93 0
44 * sig Sco bC* 16 21 11.3157134 -25 35 34.051476 2.32 3.02 2.89 1.69 1.58 B1III+B1:V 898 0
45 HD 148688 s*b 16 31 41.7687715992 -41 49 01.732565676 5.16 5.78 5.39 5.05 4.70 B1Iaeqp 170 0
46 * zet01 Sco s*b 16 53 59.7271314888 -42 21 43.307334468 4.80 5.31 4.79 4.32 3.86 B1.5Ia+ 390 0
47 * 26 Cep s*b 22 27 05.3104700184 +65 07 56.160347196 5.24 5.806 5.515     B0.5Ib 157 0
48 * 1 Cas * 23 06 36.8177774777 +59 25 11.135356051 3.93 4.771 4.840     B0.5III 254 0

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