2003AJ....125.2050C

Query : 2003AJ....125.2050C

2003AJ....125.2050C - Astron. J., 125, 2050-2063 (2003/April-0)

Large-scale structure and dynamics of Cassiopeia OB7.

CAZZOLATO F. and PINEAULT S.

Abstract (from CDS):

A large region (9°x9°) surrounding the OB association Cassiopeia OB7 has been studied for signs of interaction between the stars and the ambient gas. A large half-shell has been detected in H I around Cas OB7, as well as in the infrared and partially in CO. This half-shell covers a range of 20 km/s but could reach 40 km/s when extrapolating to the whole shell. The structure is 120 pc across if located at 2 kpc, the distance to Cas OB7. At this distance, we estimate the mass of the shell to be approximately 30,000 M☉. Interestingly, all Cas OB7 members are located well within the edge of this shell. We believe that there is a strong hint of interaction between the gas and the stars based on morphological evidence. The velocity of both objects (association and shell) and their respective distance are also in agreement. We explain the missing half by an expansion into the interarm region.

Abstract Copyright: ∼

Journal keyword(s): ISM: Bubbles - ISM: Kinematics and Dynamics - open clusters and associations: individual (Cassiopeia OB7)

Simbad objects: 44

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Number of rows : 44
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 Hilt 4 * 00 07 10.3085308800 +60 19 03.966531096 11.6 11.43 10.88     B9Iab 15 1
2 PN BV 2 PN 00 40 21.614 +62 51 34.28     21.5     ~ 37 0
3 BD+63 70 * 00 40 44.5927652496 +63 55 00.031346904 9.52 9.79 9.22     B0Ib 32 0
4 Hilt 48 * 00 43 04.7914703784 +64 55 07.927440312 11.54 11.7 11.2     B0.5IV 11 0
5 BD+61 154 Ae* 00 43 18.2566590360 +61 54 40.139212716 10.83 11.13 10.60     B8eq 217 1
6 EM* GGR 202 Be* 00 44 13.2951368088 +64 27 40.278572280 11.63 11.937 11.422     B1V:e:p 22 0
7 BD+63 87 * 00 44 47.4310450920 +64 20 13.667975088 9.92 10.338 9.978     B0.5IV 28 0
8 BD+64 76 * 00 44 51.3946631232 +65 15 54.995384340 9.3 9.57 9.16     B1Ib 24 0
9 Hilt 55 * 00 45 08.0820434361 +64 23 31.076602200 10.72 11.11 10.65 10.563   B1IVp? 19 0
10 Hilt 57 * 00 45 12.3175922352 +63 57 59.180439132 11.56 11.821 11.183     B2III 16 0
11 BD+63 89 Em* 00 45 12.8497989864 +64 23 30.734039400 9.69 10.054 9.502 9.26   B1Ib 31 0
12 Hilt 58 bC? 00 45 17.2328189976 +63 42 36.806017680 11.47 11.6 11.1     B1III 13 0
13 Hilt 59 bC* 00 45 35.0627330928 +63 21 07.436379924 10.85 11.10 10.55     B0.5V 22 0
14 BD+63 92 * 00 45 52.0261660680 +64 24 09.360544536 10.9 11.206 10.759     B2III:n 18 0
15 Hilt 61 ** 00 46 27.791016 +64 22 49.00512 10.67 11.034 10.521 10.407   B2III 16 0
16 Hilt 62 * 00 46 42.3422672184 +64 27 28.036093464 11.34 11.501 11.028     B3III 16 0
17 SH 2-180 HII 00 48.8 +62 55           ~ 11 0
18 HD 4613 * 00 49 02.2462009584 +65 33 01.431043344 9.02 9.32 8.84     B1II 37 0
19 LBN 122.92+02.39 HII 00 49 22.0 +65 15 37           ~ 17 0
20 HD 4694 s*b 00 49 53.2736337768 +64 38 16.047267936 9.06 9.160 8.551     B3Ia 53 0
21 Ass Cas OB 7 As* 00 50 14 +64 04.3           ~ 65 0
22 SH 2-182 HII 00 50.3 +64 44           ~ 12 0
23 BD+61 175 * 00 50 35.4223698552 +62 21 57.846448224 10.25 10.26 9.63     B3II 26 0
24 HD 4841 Em* 00 51 25.9269354192 +63 46 52.209157764 7.13 7.43 6.86 6.28 5.90 B5Ia 89 0
25 BD+63 102 * 00 52 17.9082480696 +64 41 00.877240572 10.16 10.50 9.98     B1II 26 0
26 TYC 4025-1345-1 * 00 52 29.8512224544 +64 32 56.139900468 11.37 11.6 11.2     B2V 11 0
27 BD+63 108 EB* 00 53 43.6848808008 +64 45 43.519103136 11.14 11.30 10.66     B3III: 16 0
28 TYC 4021-1060-1 * 00 54 52.2258170256 +63 28 52.137105312 11.15 11.4 11.1     B2V 10 0
29 SH 2-183 HII 00 54 52.9 +65 53 55           ~ 22 0
30 BD+64 93 Pu* 00 55 18.8299233984 +65 14 41.546079888 10.3 10.57 10.24     B2III 20 0
31 TYC 4025-968-1 Pu* 00 55 55.3709509032 +63 59 12.627034296 11.45 11.8 11.3     B2IV 10 0
32 TYC 4021-604-1 * 00 57 08.0435123400 +63 16 03.407691072 11.5 11.97 11.67     B1V 8 0
33 HD 5551 s*b 00 58 26.8328257680 +63 42 49.032881460 7.97 8.26 7.76     B1.5Iab 64 0
34 Hilt 85 * 00 59 24.1252774872 +63 02 10.796695008 10.61 10.80 10.45     B2III 12 0
35 HD 5689 * 00 59 47.5908405456 +63 36 28.250542152 8.79 9.41 9.19     O7Vn((f)) 60 0
36 Hilt 86 bC* 00 59 49.4338526352 +64 39 37.437741720 11.51 11.71 10.99     B2III 18 1
37 Hilt 89 * 00 59 57.3816575112 +63 49 09.587693460 11.91 12.25 11.72     B1V 10 0
38 LBN 623 HII 01 00.0 +60 59           ~ 33 2
39 BD+63 124 Be* 01 01 12.0735066264 +63 57 14.406203808 11.65 11.53 10.92     B1V 25 0
40 TYC 4025-1088-1 * 01 02 50.9745961752 +64 00 04.237226136 11.41 11.6 11.1     B3III 9 0
41 SH 2-186 HII 01 08 50.51 +63 07 34.2           ~ 45 1
42 NAME Per Arm PoG 03 30 +45.0           ~ 1672 0
43 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
44 Ass Cyg OB 1 As* 20 17.8 +37 38           ~ 270 1

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