2012A&A...538A..60S


C.D.S. - SIMBAD4 rel 1.7 - 2019.08.24CEST10:25:09

2012A&A...538A..60S - Astronomy and Astrophysics, volume 538A, 60-60 (2012/2-1)

GS 100-02-41: a new large HI shell in the outer part of the Galaxy.

SUAD L.A., CICHOWOLSKI S., ARNAL E.M. and TESTORI J.C.

Abstract (from CDS):

Massive stars have a profound effect on the surrounding interstellar medium. They ionize and heat the neutral gas, and with their strong winds they sweep up the gas, forming large HI shells. In this way, they generate a dense shell that provides the physical conditions for the formation of new stars. The aim of this study is to analyze the origin and evolution of the large HI shell GS100-02-41 and its role in triggering star-forming processes.To characterize the shell and its environs, we carried out a multi-wavelength study. We analyzed the HI 21 cm line, the radio continuum, and infrared emission distributions. The analysis of the HI data shows an expanding shell structure centered at (l, b)=(100.6°, -2.04°) in the velocity range from -29 to -51.7km/s. Taking into account noncircular motions, we infer for GS100-02-41 a kinematical distance of 2.8±0.6kpc. Several massive stars belonging to CepOB1 are located in projection within the large HI shell boundaries. The analysis of the radio continuum and infrared data reveals that there is no continuum counterpart of the HI shell. On the other hand, three slightly extended radio continuum sources are observed in projection onto the dense HI shell. From their flux density determinations we infer that they are thermal in nature. An analysis of the HI emission distribution in the environs of these sources shows a region of low emissivity for each of them, which correlates well morphologically with the ionized gas in a velocity range similar to the one where GS100-02-41 is detected. Based on an energy analysis, we conclude that the origin of GS100-02-41 could have been mainly caused by the action of the CepOB1 massive stars located inside the HI shell. The obtained age difference between the HI shell and the HII regions, together with their relative location, lead us to conclude that the ionizing stars could have been created as a consequence of the shell evolution.

Abstract Copyright:

Journal keyword(s): ISM: structure - ISM: kinematics and dynamics - HII regions - stars: formation

CDS comments: Paragraph 1 : GS 234-02 not idenified. Table 3 BD +52 2833 is a misprint for BD +53 2833.

Simbad objects: 45

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Number of rows : 45

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 NAME Per Arm PoG 03 30 +45.0           ~ 1179 0
2 GSH 263-02+45 sh 08 37 -44.           ~ 8 0
3 GSH 305+01-24 sh 13 10 -62.0           ~ 9 0
4 GSH 091+02-114 sh 21 09.6 +50 47           ~ 2 1
5 HD 207119 * 21 45 12.3983652707 +52 16 03.266100282   8.254 6.369     K3IIBa0.5 41 0
6 PSR B2148+52 Psr 21 50 37.7331 +52 47 49.625           ~ 33 0
7 HD 235673 * 21 57 37.7936006936 +52 49 14.158673205 8.58 9.30 9.16     O6.5V 45 0
8 LS III +52 17 * 21 58 28.0306949646 +52 55 26.120020732 12.35 12.68 12.25     B2IV 7 0
9 LS III +52 18 * 21 58 37.6315196335 +52 44 47.408328166   12.34 12.17     OB-: 5 0
10 LS III +52 19 * 21 58 47.6723960975 +52 54 58.810590113 11.99 12.48 12.04     BN1IIIe 7 0
11 GAL 098.51-01.7 HII 21 59.0 +52 48           ~ 1 0
12 HD 209678 ** 22 03 41.3315330680 +53 12 45.108127935 8.34 8.72 8.44     B2I 34 0
13 HD 209900 Em* 22 05 13.8195941525 +53 30 36.757945129 9.39 9.08 8.72     A0Ib 29 0
14 IRAS 22036+5306 pA* 22 05 30.29 +53 21 32.8   19.2       F4III 74 0
15 GAL 100.7-00.5 HII 22 06 +55.1           ~ 1 0
16 BD+54 2684 Em* 22 06 28.5638669873 +55 02 48.451363754   10.70 10.43     B2e 9 0
17 GSH 100-02-41 sh 22 11.6 +53 45           ~ 1 0
18 HD 210809 s*b 22 11 38.6004905633 +52 25 47.950552363 6.7 7.61 7.56     O9Iab 188 0
19 BD+53 2820 * 22 13 49.6984896009 +54 24 35.104062658 9.27 10.02 9.96     B0IVn 40 0
20 BD+54 2718 Be* 22 14 59.4827347089 +55 27 48.839216480 9.72 10.33 10.17     B2III 24 0
21 CPM 37 HII 22 16 10.2538433974 +52 21 21.879056986           ~ 32 1
22 BD+53 2833 V* 22 16 14.6245991318 +54 10 01.620832561 9.57 10.22 10.01     B1III 20 0
23 HD 211564 WR* 22 16 24.0322637172 +55 37 36.763974776   11.72 11.61     WN3(h)-w 109 0
24 BD+54 2726 SB* 22 16 44.0540067205 +55 28 37.812353225 9.17 9.68 9.42     B1.5II 39 0
25 HD 235781 * 22 16 59.9665901339 +53 39 00.972668569 8.76 8.95 8.62     B6Ib 24 0
26 BD+53 2837 SB* 22 17 06.5344107556 +54 12 33.404612918 9.69 10.26 9.96     B2V: 27 0
27 HD 235783 * 22 17 07.0152454455 +54 30 27.427444236 8.14 8.82 8.74     B1Ib 40 0
28 V* V743 Cep Al* 22 18 06.2049576954 +55 54 15.616284426 10.45 10.95 10.59     B0III 25 0
29 HD 211853 WR* 22 18 45.6058273717 +56 07 33.896665584 8.84 9.39 9.00     WN6o+O6I 257 0
30 BD+53 2843 * 22 18 45.8617810048 +54 16 19.640305718 8.97 9.62 9.47     O8III 26 0
31 LBN 102.79-00.92 HII 22 19 09.0 +56 04 45           ~ 99 0
32 HD 235813 * 22 22 14.6258688915 +54 48 01.264154792 8.33 9.00 8.87     B0III 23 0
33 HD 212455 Pu* 22 23 01.5696594820 +55 13 58.570664816 7.89 8.19 7.89     B6Ib 44 0
34 HD 235825 * 22 23 28.7248279078 +55 15 06.459171251 8.79 9.52 9.28     O9V 31 0
35 BD+54 2761 Em* 22 23 43.2935915854 +55 42 00.925896893 9.64 10.32 10.08     O6III 25 0
36 BD+54 2764 * 22 23 57.1179061104 +55 23 43.111018558 9.2 9.71 9.53     B1Ib 16 0
37 BD+53 2885 SB* 22 27 07.4925111327 +54 10 53.652711762 9.74 10.50 10.48     B2III 25 0
38 LS III +54 61 * 22 27 49.0920577979 +55 07 26.264042470   10.56 10.42     B5 6 0
39 GAL 103.39-02.28 HII 22 28.6 +55 05           ~ 2 0
40 LS III +55 84 * 22 28 52.2850019213 +55 23 02.948198138   12.6       B 6 0
41 Ass Cep OB 1 As* 22 29 +56.6           ~ 79 0
42 LS III +54 63 * 22 30 27.0211846805 +55 02 51.118389348   10.70 10.58     B2 8 0
43 EM* GGR 78 Em* 22 30 34.5890639181 +54 59 34.374883127   12.00 12.11     B 9 0
44 LS III +54 65 * 22 30 53.3296879075 +55 02 13.901862588   11.57 11.63     B2 7 0
45 NAME Cas A SNR 23 23 24.000 +58 48 54.00           ~ 2316 1

    Equat.    Gal    SGal    Ecl

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2019.08.24-10:25:09

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