2000AJ....119.1855R

Query : 2000AJ....119.1855R

2000AJ....119.1855R - Astron. J., 119, 1855-1859 (2000/April-0)

Vela OB1: probable new members and Hertzsprung-Russell diagram.

REED B.C.

Abstract (from CDS):

Several dozen stars are identified as probable previously unrecognized members of the association Vel OB1, including the Vela X-1 binary pulsar system. Based on a variable extinction analysis of 70 stars, the distance and ratio of total to selective absorption of the association are determined to be 1750 pc and 3.70, respectively. Vel OB1 may be significantly larger than previously appreciated, perhaps up to 600 by 300 pc in the sense of longitude by latitude. This physical extent, and the fact that the H-R diagram includes both low-mass evolved yellow supergiants and massive, early-type supergiants, indicates that Vel OB1 is probably not coeval.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: Open Clusters and Associations: Individual: Name: Vela OB1 - Stars: Early-Type - Stars: Supergiants

Simbad objects: 83

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Number of rows : 83
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 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
2 NGC 346 Cl* 00 59 04.4000 -72 10 39.000           ~ 547 0
3 CD-38 4168 * 08 12 00.7266157728 -39 08 41.786794968 9.22 9.80 9.48 9.64   O8.5III 22 0
4 V* V431 Pup SB* 08 17 17.6192441640 -42 31 17.515529976 6.89 7.48 7.17 7.95   B1/2Iab/b 70 0
5 HD 70122 * 08 18 26.1886894104 -44 16 00.022666800 9.36 9.83 9.52 9.60   B2Ib/II 27 0
6 HD 70583 * 08 21 00.1569750576 -43 36 21.904714080 9.5 9.94 9.28 8.74   A0Ia/ab 24 0
7 HD 71304 * 08 24 55.7882010048 -44 18 03.006513144 8.52 8.98 8.45 7.93 7.51 O9II 78 0
8 HD 71528 ** 08 26 15.8795311392 -42 08 14.925713748 7.21 7.87 7.86 8.97   B0/1III/IV 36 0
9 HD 71609 Pu* 08 26 38.1571034544 -43 24 30.947105448 7.26 7.89 7.82 8.76   B2/3II 54 0
10 HD 71649 * 08 27 12.1122637488 -36 39 13.823955828 8.23 9.14 9.22 9.43   B2Ib 33 0
11 HD 72554 * 08 31 45.1938941856 -46 07 36.281420544 8.02 9.65 9.34 8.86   B1/2Ib 28 0
12 HD 72576 * 08 31 50.7958139232 -43 49 19.206043500 8.41 9.70 9.22 9.03   B2Ib/II 31 0
13 HD 73420 * 08 36 37.1155939800 -44 04 48.163266624 8.23 9.41 9.33 9.47   B2II/III 43 0
14 HD 73568 bC* 08 37 19.4820857016 -45 12 25.961752296 8.11 9.03 9.10 9.04   B2III/IV 50 0
15 HD 73658 Em* 08 37 39.9551938368 -46 16 57.745322112 6.20 6.89 6.86 7.75   B1Ib/II 57 0
16 CD-43 4488 * 08 37 50.1581094456 -43 33 21.604596228 10.86 11.22 10.62 10.45   O9/B0 24 0
17 HD 73919 * 08 39 04.1780204280 -46 13 36.522494724 7.73 9.050 8.860     B0.5V 31 0
18 CD-45 4355 Be* 08 39 05.7145395000 -46 14 45.451817628 9.01 9.68 9.43 9.74   B0IIe 29 0
19 NGC 2645 OpC 08 39 07.9 -46 13 36           ~ 76 0
20 * b Vel s*y 08 40 37.5712078616 -46 38 55.464392884 4.86 4.52 3.81 3.16 2.62 F0Ia 143 0
21 HD 74194 HXB 08 40 47.7915253032 -45 03 30.235569624 7.05 7.77 7.55 8.70   O8.5Ib-II(f)p 220 0
22 CD-45 4394 Be* 08 40 50.9215619496 -46 05 45.356427276 9.7 10.42 10.17 10.22   B2Vne 30 0
23 CD-44 4691 * 08 41 13.5838343208 -45 16 38.008794540 8.39 9.16 9.02 9.15   B2.5II 25 0
24 HD 74371 s*b 08 41 56.9097314184 -45 24 38.562399648 4.94 5.378 5.227 6.75   B6Iab/b 98 0
25 HD 74401 Be* 08 42 00.3819632664 -47 39 53.900612928 8.51 9.31 9.09 9.54   B1IIIne 32 0
26 NGC 2659 OpC 08 42 32.1 -44 59 55           ~ 45 0
27 CD-45 4447 * 08 43 24.1537949616 -46 08 28.658569200 10.76 11.26 10.77 11.02   O7.5V 20 0
28 HD 74677 * 08 43 36.6496053336 -46 06 05.351937984 8.31 9.93 9.44 9.37   B2II 44 0
29 HD 74711 Pu* 08 43 47.5092392664 -46 47 56.368126716 6.49 7.156 7.111 8.26   B2III 47 0
30 HD 74920 * 08 45 10.3405991688 -46 02 19.239667872 6.64 9.46 9.09 8.58   O7.5IVn((f)) 77 0
31 HD 75149 s*b 08 46 30.5469120768 -45 54 45.019158300 5.25 5.677 5.459 6.77   B5Iab 115 0
32 HD 75211 SB* 08 47 01.5921294816 -44 04 28.848481212 7.35 7.90 7.50 8.28   O8.5II((f)) 99 0
33 HD 75276 * 08 47 18.8443975992 -46 09 19.498578984 6.71 6.263 5.748 6.73   F0III 80 0
34 HD 75222 s*b 08 47 25.1378783304 -36 45 02.670440616 7.24 7.80 7.42 8.22   O9.7Iab 102 0
35 HD 75309 V* 08 47 27.9647002224 -46 27 03.958625664 7.05 7.82 7.84 8.77   B2Ib/II 81 0
36 HD 75534 * 08 48 44.7928114944 -47 45 48.129964596 7.69 8.93 8.95 8.68   B1/2Ib 40 0
37 HD 75658 Be* 08 49 24.7435428312 -47 29 19.113809316 7.50 8.94 9.02 8.84   B2/3ne 41 0
38 Ass Vel OB 1 As* 08 49.9 -45 00           ~ 104 0
39 CD-44 4865 * 08 50 02.2858329192 -44 34 39.926878500 9.88 10.16 9.63 9.67   B0III 57 0
40 CD-42 4694 * 08 50 13.4262 -43 09 48.315 10.91 11.28 10.64 10.49   O9V 18 0
41 CD-45 4606 * 08 50 14.9101214904 -45 31 21.771007860 8.81 9.32 9.02 9.53   B0.5IIIn 34 0
42 HD 75860 s*b 08 50 53.2419265893 -43 45 05.431137671 8.05 8.30 7.58 6.83 6.23 B1.5Iabp 96 0
43 CD-45 4635 * 08 51 16.5073643112 -45 40 34.729333608 8.89 9.48 9.30 9.53   B1II 31 0
44 HD 75991 * 08 51 33.4469319624 -47 34 17.922633564 8.39 9.31 9.44 9.56   B2II 42 0
45 HD 76031 * 08 52 04.1363921352 -44 00 34.957506348 9.09 9.70 9.50 9.47   B1Iab/b 36 0
46 CD-45 4676 Be* 08 53 22.009 -46 02 08.78 9.54 9.93 9.17 9.39   O9.5II 47 0
47 HD 76341 Em* 08 54 00.6139723224 -42 29 08.763425340 6.88 7.392 7.163 8.08   O9.2IV 118 1
48 CD-47 4490 * 08 54 15.2758211640 -47 29 30.985643508 9.61 10.20 9.96 9.85   B0.5IV 25 0
49 HD 76535 * 08 55 00.4504234680 -47 24 57.457226556 8.45 9.19 9.45 9.32   O9/B0 43 0
50 HD 76556 * 08 55 07.1436167808 -47 36 27.161751528 8.03 8.61 8.20 8.90   O6IV(n)((f))p 80 1
51 CD-45 4719 * 08 56 45.1552608000 -45 53 47.308408188 10.94 11.05 10.08 9.90   B0 21 0
52 CD-46 4786 * 08 56 55.8413690424 -47 02 45.526396776 9.71 9.95 9.49 9.47   B1Ib 44 0
53 HD 76968 V* 08 57 28.8524478672 -50 44 58.197488784 6.53 7.33 7.21 7.01 6.87 O9.2Ib 99 1
54 CD-42 4819 * 08 57 41.4155458248 -42 41 49.703056548 9.72 10.10 9.81 9.90   B2Vp 22 0
55 CD-47 4550 * 08 57 51.6591996432 -47 45 43.990614468 10.92 11.13 10.29 10.15   O7V((f))z 34 0
56 CD-47 4551 s*b 08 57 54.6180604176 -47 44 15.708893424 9.11 9.41 8.54 8.92   O5Ifc 84 0
57 CD-47 4564 * 08 58 27.5431038936 -48 17 11.556316176 10.35 10.69 10.01 9.90   B0.5III 26 0
58 V* V404 Vel EB* 08 59 14.9179434264 -48 49 49.104368004 9.52 10.38 9.91 9.68   B7Iab/b 34 0
59 Cl Collinder 205 OpC 09 00 30.6 -48 59 30           ~ 65 0
60 V* GP Vel HXB 09 02 06.8608812864 -40 33 16.899168060 6.85 7.37 6.87 6.31 6.05 B0.5Ia 1588 0
61 HD 77852 * 09 03 13.2788694888 -48 30 25.916697612 9.59 10.17 9.61 9.12   B8/9Iab/b 20 0
62 CD-45 4820 * 09 03 45.5929707216 -46 20 52.257599160 12.15 12.37 11.48 11.21   OB 12 0
63 CD-45 4826 Be* 09 04 06.5350405584 -45 40 36.348494088 10.28 10.74 10.35 10.17   O9 27 0
64 CPD-47 3051 * 09 04 44.7891213048 -48 21 59.153644764 11.82 12.06 11.16 10.95   OB 20 0
65 HD 78344 * 09 05 51.3294079248 -47 46 06.834233424 10.10 10.12 9.00 8.55 8.16 O9.5/B0(Ib) 87 0
66 HD 298298 Be* 09 08 27.4567253208 -52 34 39.867670776 8.73 9.43 9.16 9.60   B0 29 0
67 HD 78927 * 09 09 26.3513712408 -43 18 31.616240652 8.21 9.61 9.15 9.39   B1II/III 31 0
68 HD 78958 Pu* 09 09 37.4530560744 -43 53 19.263282504 9.41 9.72 9.08 9.43   B0/1Iab 55 0
69 HD 79186 s*b 09 11 04.3980934536 -44 52 04.448548776 4.65 5.22 5.00 4.71 4.49 B5Ia 149 0
70 HD 80057 sg* 09 16 04.0298657640 -44 53 55.397416632 6.2 6.276 6.040 7.26   A0Iab 62 0
71 HD 80558 s*b 09 18 42.3559197816 -51 33 38.338564212 6.15 6.47 5.93 5.36 4.94 B6Ia 124 0
72 HD 297433 * 09 22 44.7383403672 -49 30 19.924176204 10.56 10.46 9.93 9.55   O8/9 31 0
73 HD 81370 bC* 09 23 17.7297916728 -52 44 52.281750048 8.04 9.12 9.02 9.43   B1(III)n 47 0
74 CD-48 4654 * 09 23 19.3983709728 -49 15 40.091965704 11.21 11.17 10.37 10.06   B2Ib 25 0
75 HD 81471 * 09 23 59.3339038896 -51 44 13.493033484 6.89 6.593 6.086 7.03   A5Ia/ab 58 0
76 HD 298420 EB* 09 24 05.7077582496 -52 51 57.784934412 9.55 10.13 9.85 9.96   B1/2 26 0
77 HD 298448 EB* 09 26 22.3157943504 -52 58 40.253785572 9.38 10.01 9.71 10.03   B1/3 28 0
78 HD 298429 * 09 30 37.2571070208 -51 39 34.694474940 9.78 10.46 9.97 9.80   O8.5V 49 0
79 HD 298425 V* 09 30 54.2585027640 -51 25 15.993593652 9.85 10.52 10.00 9.95   OB 29 0
80 HD 82830 Be* 09 33 09.0903986160 -46 45 54.488996100 8.73 9.92 9.80 9.68   B0/2Ie 39 0
81 HD 84136 * 09 41 32.3655372216 -48 36 23.137981272 8.76 9.37 9.17 9.42   B1/2II 23 0
82 HD 85356 * 09 49 58.8315677088 -47 56 51.563903928 7.06 9.20 8.98 8.95   B2Ib 33 0
83 Ass Vel OB 4 * ~ ~           ~ 8 0

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