2001MNRAS.324..747M

Query : 2001MNRAS.324..747M

2001MNRAS.324..747M - Mon. Not. R. Astron. Soc., 324, 747-756 (2001/July-1)

Model atmosphere and kinematical analyses of early-type stars from the Edinburgh-Cape Survey.

MAGEE H.R.M., DUFTON P.L., KEENAN F.P., ROLLESTON W.R.J., KILKENNY D., O'DONOGHUE D., KOEN C. and STOBIE R.S.

Abstract (from CDS):

We present high-resolution spectroscopic observations of 21 B-type stars, selected from the Edinburgh-Cape Blue Object Survey. Model atmosphere analyses confirm that 14 of these stars are young, main-sequence B-type objects with Population I chemical compositions. The remaining seven are found to be evolved objects, including subdwarfs, horizontal branch and post-AGB objects. A kinematical analysis shows that all 14 young main-sequence stars could have formed in the disc and subsequently been ejected into the halo. These results are combined with the analysis of a previous subsample of stars taken from the Survey. Of the complete sample, 31 have been found to be young, main-sequence objects, with formation in the disc, and subsequent ejection into the halo, again being found to be a plausible scenario.

Abstract Copyright: The Royal Astronomical Society

Journal keyword(s): stars: abundances - stars: atmospheres - stars: early-type - stars: kinematics

CDS comments: Table 1 : EC 19071-7634 misprint for 19071-7643, 19337-6734 misprint for 19337-6743, 20105-2944 misprint for 20104-2944

Simbad objects: 30

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Number of rows : 30
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 HD 3175 * 00 34 22.3884606312 -63 03 42.017180616 8.5 9.15 9.33     B4V 48 0
3 BD-15 115 * 00 38 20.2595898264 -14 59 54.165165180 9.848 10.686 10.885 10.980 11.089 B2 66 0
4 CD-56 152 Be* 00 49 01.3059074664 -56 05 49.339960980   10.11 10.18     Be 67 0
5 CD-68 82 HS? 01 49 40.2605163864 -67 50 01.552628580 10.20 10.86 11.07     B3 13 0
6 HD 22586 * 03 35 38.0490446928 -52 33 23.927820948 6.93 7.85 8.03     B1/2III 72 0
7 EC 04420-1908 HB* 04 44 16.3806246696 -19 02 41.977360284 12.58 13.07 13.14     B6 11 0
8 * o Ori SB* 05 21 45.7473567408 -00 22 56.880734196 3.79 4.58 4.74 4.79 4.97 B2IV 246 0
9 HD 36959 Y*O 05 35 01.0070120496 -06 00 33.366713364 4.52 5.33 5.53     B1V 223 0
10 NAME Ori I As* 05 38 -02.8           ~ 653 0
11 HD 40031 HB* 05 52 00.2296216920 -62 31 03.897038712 8.7 9.17 9.27     B6III 21 0
12 EC 06012-7810 HB* 05 58 29.1344374416 -78 10 26.211425376 12.48 13.18 13.26 13.45   B3 6 0
13 * ksi01 CMa bC* 06 31 51.3662820799 -23 25 06.319934859 3.10 4.09 4.33 4.45 4.72 B0.7IV 336 0
14 BPS BS 17587-0068 HS? 09 49 27.9341614224 -14 47 33.371929644   13.31 13.48 13.70   B2 8 0
15 HD 132955 Pu* 15 02 59.2764966384 -32 38 35.849039748 4.69 5.319 5.437     B3V 102 0
16 NAME Upper Sco-Cen As* 16 15 -24.2           ~ 1497 1
17 Ass Sgr OB 1 As* 18 06 -22.8           ~ 128 0
18 CD-76 983 bC? 19 14 10.7240886912 -76 38 14.193645792 9.22 10.07 10.23     B3 37 0
19 HD 184308 * 19 38 45.7624347816 -67 37 08.553833148 9.31 9.43 9.795 9.43   B9V 24 0
20 HD 187311 * 19 51 04.6991222952 -41 01 23.633971392 9.41 10.08 10.23 10.2 10.343 B5II 38 0
21 BPS CS 22896-0165 HS? 19 53 01.0848444168 -56 33 40.333723992 12.72 13.57 13.74     B2 11 0
22 EC 19490-7708 HB* 19 55 55.1859877824 -77 00 38.916869004 12.36 12.88 12.50     B6: 11 0
23 HD 189367 HB* 20 01 25.8625334040 -42 51 21.562138548 8.64 9.16 9.20     B8III 12 0
24 CD-38 13815 ** 20 01 58.8010413144 -38 15 32.463690984 9.90     11.055   B2 13 0
25 EC 20011-5005 HB* 20 04 52.7062619424 -49 57 14.841973620 13.20 13.76 13.87     B5 13 0
26 HD 191466 HB* 20 12 58.0446707016 -56 50 47.971544496 8.12 8.60 8.68     B5/6III 21 0
27 EC 20104-2944 * 20 13 34.7079789648 -29 35 35.548742040 12.34 12.85 12.90     B6.5 9 0
28 * nu. Cap * 20 20 39.8157949497 -12 45 32.690284207 4.61 4.72 4.76 4.75 4.81 B9IV 279 0
29 CD-31 17605 HB* 20 28 20.4212277768 -31 27 06.415949628 9.29 10.180 10.35     B2 9 0
30 CD-24 16312 HS? 20 51 29.8670235336 -24 09 05.141260764 10.89 11.74 11.88     B4? 13 0

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