2012A&A...546A..62C


Query : 2012A&A...546A..62C

2012A&A...546A..62C - Astronomy and Astrophysics, volume 546A, 62-62 (2012/10-1)

GS 305+04-26: revisiting the interstellar medium around the Centaurus OB1 stellar association.

CORTI M.A., ARNAL E.M. and ORELLANA R.B.

Abstract (from CDS):

Massive stars deeply modify their surrounding interstellar medium (ISM) via their high throughput of ionizing photons and their strong stellar winds. In this way, they may create large expanding structures of neutral gas. We study a new large neutral hydrogen (HI) shell, labelled GS305+04-26, and its relationship with the OB association Cen OB1. To carry out this study, we have used a multi-wavelength approach. We analyse both HI line data retrieved from the Leiden-Argentina-Bonn (LAB) survey and new spectroscopic optical observations obtained at CASLEO, as well as make use of proper motion databases available from CDS. The analysis of the HI data reveals a large expanding structure GS305+04-26 centred at (l, b)=(305°, +4°) in the velocity range from -33 to -17km/s. Based on its central velocity of -26km/s and using standard galactic rotation models, a distance of 2.5±0.9kpc is inferred. This structure, elliptical in shape, has a major and minor axis of 440 and 270pc, respectively. Its expansion velocity, total gaseous mass, and kinetic energy are ∼8km/s, (2.4±0.5)x105M, and (1.6±0.4)x1050erg, respectively. Several stars of the OB-association Cen OB1 are seen projected onto, and within, the boundaries of GS305+04-26. Based on an analysis of proper motions, new members of Cen OB1 are identified. The mechanical energy injected by these stars could have been the origin of this HI structure.

Abstract Copyright:

Journal keyword(s): Galaxy: kinematics and dynamics - Galaxy: structure - open clusters and associations: individual: Cen OB1 - ISM: bubbles - ISM: structure - radio lines: ISM

Simbad objects: 73

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Number of rows : 73
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 Ass Per OB 2 As* 03 42.2 +33 26           ~ 315 0
2 HD 57682 * 07 22 02.0544956184 -08 58 45.761168747 5.20 6.24 6.43     O9.2IV 236 0
3 HD 108516 * 12 28 20.2007248248 -62 57 27.294934995   9.60 9.48     B1/3(III) 14 0
4 HD 109150 * 12 32 57.4239099716 -59 26 37.951846493   8.65 8.57 9.38   B2II/III 19 0
5 HD 109253 * 12 33 58.7618609074 -64 22 36.950288401   9.76 9.59     B8II/III 8 0
6 HD 109505 * 12 35 46.3970849369 -61 34 22.883394355 7.58 8.95 8.68 9.04   B2II 27 0
7 HD 109937 * 12 39 19.4548379930 -63 21 41.214645447   9.78 9.40 9.77   B2/3III 20 0
8 HD 109978 * 12 39 37.6533132030 -62 26 01.068562707 8.61 9.59 9.27 9.44   O9III 48 0
9 HD 110449 * 12 42 52.9637520246 -60 58 32.758994120   9.45 9.32     B2III 18 0
10 HD 110597 * 12 43 53.0475819421 -59 20 09.767047768   9.64 9.50     B8II 14 0
11 HD 110639 * 12 44 17.0842708574 -61 23 40.696922138 8.90 9.15 8.46 9.01   B1II-III 42 0
12 CD-64 654 * 12 45 44.1272686022 -65 37 23.591171091 9.30 9.86 9.72     B1V 15 0
13 HD 110912 * 12 46 18.5913664439 -62 18 02.396981154 9.88 9.99 9.76     B8II/III 15 0
14 HD 110984 * 12 46 44.8300001347 -61 11 11.521281879 8.93 9.50 9.03 9.52   B1II/III 47 0
15 HD 111121 * 12 47 47.1805389368 -59 05 04.358343289   9.72 9.63     B8/9II/III 12 0
16 HD 111579 * 12 51 03.5538117740 -61 14 37.755872938 9.45 9.68 9.12 9.53   B2Ib/II 38 0
17 HD 111613 sg* 12 51 17.9762278922 -60 19 47.233954725 6.00 6.10 5.72 5.32 5.03 B9.5Iab 110 0
18 HD 111904 V* 12 53 21.8939526500 -60 19 42.561485784 5.75 6.05 5.77 7.09   B9Iab 102 0
19 PSR J1253-5819 Psr 12 53 28.4130 -58 20 40.590           ~ 20 0
20 V* BU Cru EB* 12 53 37.6191876667 -60 21 25.424160921 6.49 7.04 6.84 7.55   B2Ib 103 0
21 NGC 4755 OpC 12 53 39 -60 21.7           ~ 270 0
22 CPD-59 4552 * 12 53 46.4933523228 -60 24 12.416336476 7.79 8.337 8.24 9.13   B1III 46 0
23 * kap Cru SB* 12 53 48.9195114429 -60 22 34.468234629 5.62 6.12 5.94 7.12   B2/3Ia 122 0
24 HD 111990 * 12 53 59.7990827718 -60 20 07.505578149 6.46 6.95 6.77 7.68   B1/2Ib 78 1
25 HD 112026 * 12 54 18.4291917638 -60 53 38.932236046 7.89 8.69 8.66     B0/1IV 26 0
26 PSR J1254-6150 Psr 12 54 32.48 -61 50 50.8           ~ 3 0
27 HD 112147 Be* 12 55 08.4591267187 -59 01 07.418764320 8.54 9.316 9.13 9.58   Be 47 0
28 HD 112181 * 12 55 31.8132163539 -60 39 00.536237280 8.19 9.30 9.19 9.49   B2/3II/III 25 0
29 HD 112364 * 12 56 59.6535312508 -59 44 33.016589823 6.9 7.532 7.387     B1III 38 0
30 HD 112382 Em* 12 56 59.9134185325 -59 02 00.702409204   9.22 9.01     B4II 17 0
31 HD 112366 * 12 57 11.1039834409 -63 27 52.149611882 8.21 8.36 7.63 8.41   B6Iab/b 29 0
32 HD 112471 ** 12 57 44.9290270785 -60 53 15.586355745 8.36 9.37 9.13 9.46   B1II/III 25 0
33 HD 112485 * 12 57 51.5044903702 -60 48 56.077662329 8.84 9.57 9.53     B1/3(III) 24 0
34 HD 112497 * 12 58 00.9740789569 -61 03 19.154510861 8.38 9.27 8.97 9.15   B1/2II/III 28 0
35 HD 112637 * 12 59 15.6247029264 -63 18 16.129134681   9.90 9.55     B2III 16 0
36 HD 112661 ** 12 59 21.2552704270 -62 17 20.598518499 9.6 9.96 9.51 9.65   B0/1III/IV 21 0
37 HD 112784 * 13 00 05.6353969570 -60 35 37.221922955 7.50 8.31 8.26 9.11   O9.5III 75 0
38 HD 112842 * 13 00 31.5269107590 -60 22 31.319694221 6.83 7.234 7.072     B4II 45 0
39 HD 112852 * 13 00 34.2945786461 -59 34 51.698231807   10.14 9.91     B8/9II 15 0
40 HD 113012 * 13 01 41.5337273990 -60 04 35.170402362 7.46 8.23 8.13 8.98   B0III 65 0
41 Ass Cen OB 1 As* 13 02 -61.4           ~ 104 0
42 HD 113421 * 13 04 31.6342382529 -59 49 28.122124824 8.86 9.54 9.33 9.76   B0Vn 32 0
43 HD 113422 * 13 04 36.8519896213 -61 42 37.013684933 8.87 9.07 8.24 9.04   B1/2Ia/ab 62 0
44 HD 113432 Em* 13 04 49.3230284151 -63 29 29.247253988 9.4 9.70 9.19 9.40   B1Ib 39 0
45 HD 113606 * 13 06 03.1663910266 -64 14 35.577322308 8.54 9.76 9.10 9.38   O9.5III 27 0
46 HD 113708 * 13 06 48.3351445448 -65 12 43.716978303 7.22 8.03 8.17 9.03   B1/2III(n) 34 0
47 CD-61 3664 * 13 06 48.9669796013 -61 47 00.073057339 9.76 10.21 9.62 9.58   O9.5V 23 0
48 HD 113742 * 13 06 53.7480444089 -61 56 38.007569335   9.53 9.20 9.62   B1/2(III) 19 0
49 HD 113754 * 13 07 04.3899878991 -62 59 30.453492941 9.7 10.12 9.63 9.78   O6/7 30 0
50 GSH 305+04-26 sh 13 07 -59.           ~ 4 0
51 * tet Mus WR* 13 08 07.1527888825 -65 18 21.679641155 4.71 5.50 5.53 5.44 5.40 WC5+B0III 300 0
52 HD 114011 * 13 08 43.0544949595 -61 11 10.965832008 9.8 10.08 9.36 9.59   B3/5Ib/II 47 0
53 GSH 305+01-24 sh 13 10 -62.0           ~ 9 0
54 HD 114213 * 13 10 21.3700451292 -61 28 20.892945879 9.86 9.88 8.96 9.40   B1Ib 72 0
55 HD 114394 * 13 11 20.5924052231 -59 34 36.923358089 7.74 8.44 8.22 9.03   B1III 26 0
56 HD 114478 * 13 11 57.4968442824 -62 48 54.872565966 8.63 9.59 9.56 9.40   B1Ib/II 33 0
57 HD 114669 * 13 13 10.7559396218 -62 31 38.194138424   9.22 9.07     B5II 14 0
58 CD-60 4554 * 13 13 11.7407257561 -61 05 21.247912777 8.33 9.01 8.78 9.44   B1III 27 0
59 HD 114737 ** 13 13 45.5333080580 -63 35 11.718886112 7.43 8.19 8.00 8.92   O8.5III 55 0
60 HD 114886 ** 13 14 44.38260 -63 34 51.8077 6.15 6.98 6.89 7.76   O9-B0V 93 0
61 CD-60 4575 Be* 13 15 10.0089456895 -60 58 00.722310682 9.98 10.37 9.81 9.94   B1IIIne 32 0
62 HD 115223 * 13 16 52.4645547925 -60 27 22.539943464 9.55 9.38 8.98 9.25   A0Ib/II 20 0
63 HD 115363 s*b 13 18 06.8645878178 -63 41 13.634362256 7.95 8.46 7.87 8.72   B1Ia+ 73 0
64 HD 115455 SB* 13 18 35.3592390638 -62 29 28.407889555 7.40 8.17 7.97 8.81   O8III((f)) 97 1
65 CD-61 3731 * 13 18 39.2837519714 -62 31 48.224260033 9.1 9.68 9.53     B0.5V 19 0
66 HD 115497 * 13 18 40.7947585460 -59 00 39.541052922   9.81 9.71     B8/9II 15 0
67 HD 115666 * 13 19 54.4539146153 -60 52 20.148109514   9.49 9.40     B7II 13 0
68 HD 116119 sg* 13 22 55.6321482601 -62 00 44.005842039 8.53 8.58 7.87 8.64   A0Ia 51 0
69 HD 116121 * 13 23 03.7965076856 -63 03 42.388128144   9.26 9.27     O9/B0(V) 21 0
70 HD 116403 * 13 24 51.6979914412 -61 01 44.921275838 8.63 9.00 9.00     B5II/III 15 0
71 HD 116864 * 13 28 00.2205589066 -63 13 29.253327011   9.13 9.12     B9II/III 9 0
72 PSR J1334-5839 Psr 13 34 30.1091 -58 39 16.545           ~ 6 0
73 * nu. Cap * 20 20 39.8156206 -12 45 32.684421 4.61 4.72 4.76 4.75 4.81 B9IV 260 0

    Equat.    Gal    SGal    Ecl

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2021.07.27-06:50:23

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