2008MNRAS.387.1080R

Query : 2008MNRAS.387.1080R

2008MNRAS.387.1080R - Mon. Not. R. Astron. Soc., 387, 1080-1092 (2008/July-1)

Sh2-205 - I. The surrounding interstellar medium.

ROMERO G.A. and CAPPA C.E.

Abstract (from CDS):

We investigate the distribution of the interstellar matter in the environs of the HII region Sh2-205, based on neutral hydrogen 21-cm-line data and radio continuum images at 408 and 1420 MHz obtained from the CGPS, 12CO (J=1 ⟶0) observations, high-resolution IRAS data (HIRES), and MSX data.

Sh2-205 can be separated into three distinct optical structures: SH149.25-0.0, SH148.83-0.67, and LBN148.11-0.45. The three regions are detected at both 408 and 1420 MHz. The derived spectral indices show the thermal nature of SH148.83-0.67 and LBN148.11-0.45.

LBN148.11-0.45 is a classical HII region surrounded by an HI shell. The associated neutral atomic and ionized masses are 65M☉ and 70M☉, respectively. Dust and molecular gas (∼6x104M☉) related to this ionized region have been found. In particular, a photodissociation region is detected at the interface between the ionized and molecular regions. If the proposed exciting star HD24094 were an O8-O9 type star, as suggested by its near-infrared colours, its UV photon flux would be strong enough to explain the ionization of the nebula.

The optical, radio continuum, and 21-cm-line data allow us to conclude that SH148.83-0.67 is an interstellar bubble powered by the energetic action of HD24431. The associated neutral atomic and ionized masses are 180M☉ and 300M☉, respectively. The emission of SH149.25-0.0 is too faint to derive the dust and gas parameters.

An HI shell centred at (l, b) = (149°0', -1°30') was also identified. It correlates morphologically with the molecular gas emission. The neutral atomic and molecular masses of the shell are 1600M☉ and 2.6x104M☉, respectively. The open cluster NGC1444 is probably responsible for shaping this HI structure.


Abstract Copyright: © 2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): stars: individual: HD24431 - stars: individual: ALS7793 - stars: individual: HD24094 - ISM: bubbles - ISM: structure

CDS comments: The structures SH 149.25-0.0 and SH 148.83-0.67 are not in Simbad.

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 NGC 884 OpC 02 22 15.7 +57 08 59           ~ 503 0
2 Ass Cam OB 1 As* 03 31.6 +58 38           ~ 98 0
3 NGC 1444 OpC 03 49 26.6 +52 39 10   7.04 6.6     ~ 73 0
4 NVSS J035107+532041 Rad 03 51 07.72 +53 20 40.6           ~ 3 1
5 NVSS J035115+525046 Rad 03 51 15.67 +52 50 46.0           ~ 1 0
6 NVSS J035125+532828 Rad 03 51 25.30 +53 28 28.9           ~ 3 1
7 NVSS J035205+532753 Rad 03 52 05.62 +53 27 53.0           ~ 1 0
8 NVSS J035210+531621 Rad 03 52 10.55 +53 16 20.7           ~ 2 1
9 SH 2-205 HII 03 52 14 +53 25.0           ~ 40 0
10 HD 24094 EB* 03 52 48.9820750176 +53 29 01.219326180   8.72 8.36     B6V 46 0
11 NVSS J035256+525159 Rad 03 52 56.11 +52 51 59.9           ~ 1 0
12 LBN 148.11-00.45 HII 03 53 +53.3           ~ 4 0
13 NVSS J035304+524515 Rad 03 53 04.65 +52 45 14.5           ~ 4 1
14 NVSS J035320+531453 Rad 03 53 20.47 +53 14 53.7           ~ 1 0
15 NVSS J035327+533601 Rad 03 53 27.24 +53 36 01.7           ~ 3 1
16 NVSS J035337+530130 Rad 03 53 37.65 +53 01 30.2           ~ 1 0
17 NVSS J035347+523208 Rad 03 53 47.56 +52 32 08.0           ~ 2 0
18 Hilt 404 * 03 53 59.4308889768 +53 12 56.744868996 13.333 11.6 11.2     B1V 20 0
19 NRRF J035430.6+530759 G 03 54 30.7 +53 07 59           ~ 2 0
20 NVSS J035437+525101 Rad 03 54 37.25 +52 51 00.5           ~ 2 1
21 HD 24431 ** 03 55 38.4221692944 +52 38 28.747965948 6.50 7.11 6.74 6.36 6.10 O9III+B1.5V 173 0
22 NVSS J035651+521521 Rad 03 56 51.20 +52 15 21.2           ~ 2 0
23 NVSS J035651+521752 Rad 03 56 51.793 +52 17 52.47           ~ 4 1
24 NVSS J035748+525933 Rad 03 57 48.15 +52 59 33.8           ~ 1 0
25 NVSS J035751+524924 Rad 03 57 51.36 +52 49 24.4           ~ 1 0
26 NVSS J035805+530339 Rad 03 58 05.51 +53 03 39.7           ~ 3 1
27 Cl King 7 OpC 03 59 08.0 +51 47 11           ~ 74 0
28 NGC 1496 OpC 04 04 28.5 +52 40 00     9.6     ~ 40 0
29 SH 2-104 HII 20 17 52.5 +36 49 24           ~ 97 0
30 NAME Cepheus Flare MoC 23 34 +72.0           ~ 142 0

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