2002A&A...395..955C


Query : 2002A&A...395..955C

2002A&A...395..955C - Astronomy and Astrophysics, volume 395, 955-967 (2002/12-1)

An HI interstellar bubble linked to the O-type stars BD +24°3866 and BD +25°3952.

CAPPA C., PINEAULT S., ARNAL E.M. and CICHOWOLSKI S.

Abstract (from CDS):

We investigate the ISM in the vicinity of the O-type stars BD +24°3866 (O8.5II(f)), BD +24°3881 (O6.5III(f)) and BD +24° 3952 (O8) based on radio continuum and Hi line data obtained with the Synthesis Telescope of the Dominion Radio Astrophysical Observatory (DRAO) with synthesized beams of 1.5' and 7' at 1420 and 408 MHz, respectively. High angular resolution IRAS data (HIRES) are also analyzed. BD +24°3866 is found to be located close to the inner border of a slowly expanding shell. The evolved HII region Sh2-88, which is excited by BD +25°3952, appears to be interacting with neutral material in the approaching part of this shell. The whole structure is at a distance of 2.4kpc and is about 23x15pc in radius. The total swept up mass is 1300 M. The stellar winds of BD +24°3866 and BD +25°3952, are mainly responsible for shaping the HI structure. An HI expanding shell was also found to be related to the HII region G61.7+0.9. At a kinematic distance of 2.4kpc, this feature is 10 pc in radius and has neutral and ionized masses of 200 and 135M, respectively. The present observational data do not allow us to identify a definite interstellar HI feature associated with BD +24°3881. We consider different explanations for this fact.

Abstract Copyright:

Journal keyword(s): ISM: bubbles - HII regions - ISM: individual objects: Sh2-88, Sh2-87, G61.7+0.9 - stars: early-type - stars: individual: BD+24 3866, BD+24 3881, BD+25 3952

Nomenclature: Fig.9, Table 3: [CPA2002] N (Nos 1-7). Table 6: [CPA2002] Structure A (Nos A-C).

Simbad objects: 28

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Number of rows : 28
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 Vul OB 1 As* 19 44.0 +24 13           ~ 90 0
2 IRAS 19418+2455 FIR 19 44 02.9 +25 03 00           ~ 1 0
3 [CPA2002] 1 Rad 19 44 06.7 +25 48 39           ~ 1 1
4 SNR G061.7+00.9 SNR 19 44.2 +25 48           ~ 2 0
5 [CPA2002] Structure C HI 19 44.3 +25 45           ~ 1 0
6 IRAS 19423+2541 HII 19 44 23.489 +25 48 41.55           ~ 7 0
7 [CPA2002] 2 Rad 19 44 23.6 +25 48 52           ~ 1 1
8 SH 2-88 A HII 19 44.5 +25 48           ~ 8 0
9 IRAS 19427+2454 FIR 19 44 51.9 +25 01 43           ~ 1 0
10 [CPA2002] 3 Rad 19 45 01.7 +25 20 17           ~ 1 1
11 [CPA2002] Structure A HI 19 45.5 +25 16           ~ 1 0
12 NAME NC 48 Em* 19 45 40.6390887652 +25 07 36.037821396 10.76 10.71 9.55     O8e 63 0
13 HD 338916 Em* 19 45 42.1151825677 +25 21 16.407131222 10.36 10.70 10.17     O7.5Vz 48 0
14 IRAS 19437+2532 MIR 19 45 47.69328 +25 39 44.4744           ~ 2 0
15 [CPA2002] Structure B HI 19 45.8 +25 20           ~ 1 0
16 [CPA2002] 4 Rad 19 45 56.4 +24 41 14           ~ 1 1
17 IRAS 19438+2505 FIR 19 45 57.0 +25 12 50           ~ 1 0
18 [CPA2002] 5 Rad 19 46 06.9 +25 28 10           ~ 1 1
19 SH 2-87 bub 19 46 20.7 +24 35 15           ~ 153 2
20 HD 338936 EB* 19 46 22.6816552779 +24 37 47.971689833 10.32 10.67 9.89 9.91   B2 23 0
21 LS II +25 9 * 19 46 35.3553796541 +25 11 29.264617935 12.46 12.61 11.70     B1VneHe-n 17 0
22 LBN 061.50+00.29 HII 19 46 45.7 +25 12 56           ~ 63 0
23 SH 2-88 B HII 19 46 47.329 +25 12 45.62           ~ 154 2
24 [GGL95] G61.48 E HII 19 46 49.07 +25 12 47.0           ~ 17 0
25 HD 338931 Em* 19 47 02.7408895083 +24 50 55.551740884 9.38 9.72 9.14     O6III(f) 40 0
26 IRAS 19452+2511 FIR 19 47 23.0 +25 18 48           ~ 1 0
27 IRAS 19454+2454 * 19 47 30.3012345250 +25 01 54.955044075 12.33 12.80 11.76     ~ 6 0
28 [CPA2002] 7 Rad 19 48 00.2 +24 50 19           ~ 1 0

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2021.10.24-08:53:09

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