The HI supershell GS118+01-44 and its role in the interstellar medium
Aims. We carry out a multiwavelength study to characterize the HI supershell designated GS118+01-44, and to analyse its possible origin. Methods. A multiwavelength study has been carried out to study the supershell and its environs. We performed an analysis of the HI, CO, radio continuum, and infrar...
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2016
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046361_v585_n_p_Suad http://hdl.handle.net/20.500.12110/paper_00046361_v585_n_p_Suad |
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paper:paper_00046361_v585_n_p_Suad2023-06-08T14:28:12Z The HI supershell GS118+01-44 and its role in the interstellar medium HIIregions ISM: bubbles ISM: kinematics and dynamics stars: formation Astronomy Astrophysics Canadian galactic plane surveys HIIregions Interstellar mediums Ism: bubbles ISM: Kinematics and dynamics Multi-wavelength study Stars: formation Young stellar objects Supernovae Aims. We carry out a multiwavelength study to characterize the HI supershell designated GS118+01-44, and to analyse its possible origin. Methods. A multiwavelength study has been carried out to study the supershell and its environs. We performed an analysis of the HI, CO, radio continuum, and infrared emission distributions. Results. The Canadian Galactic Plane Survey (CGPS) HI data reveals that GS118+01-44 is centred at (l,b) = (117°.7, 1°.4) with a systemic velocity of -44.3 km s -1 . According to Galactic rotation models this structure is located at 3.0 ± 0.6 kpc from the Sun. There are several HII regions and three supernova remnants (SNRs) catalogued in the region. On the other hand, the analysis of the temperature spectral index distribution shows that in the region there is a predominance of non-thermal emission. Infrared emission shows that cool temperatures dominate the area of the supershell. Concerning the origin of the structure, we found that even though several OB stars belonging to CasOB5 are located in the interior of GS118+01-44, an analysis of the energy injected by these stars through their stellar winds indicates that they do not have sufficient energy to create GS118+01-44. Therefore, an additional energy source is needed to explain the genesis of GS118+01-44. On the other hand, the presence of several HII regions and young stellar object candidates in the edges of GS118+01-44 shows that the region is still active in forming new stars. © ESO, 2016. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046361_v585_n_p_Suad http://hdl.handle.net/20.500.12110/paper_00046361_v585_n_p_Suad |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
HIIregions ISM: bubbles ISM: kinematics and dynamics stars: formation Astronomy Astrophysics Canadian galactic plane surveys HIIregions Interstellar mediums Ism: bubbles ISM: Kinematics and dynamics Multi-wavelength study Stars: formation Young stellar objects Supernovae |
| spellingShingle |
HIIregions ISM: bubbles ISM: kinematics and dynamics stars: formation Astronomy Astrophysics Canadian galactic plane surveys HIIregions Interstellar mediums Ism: bubbles ISM: Kinematics and dynamics Multi-wavelength study Stars: formation Young stellar objects Supernovae The HI supershell GS118+01-44 and its role in the interstellar medium |
| topic_facet |
HIIregions ISM: bubbles ISM: kinematics and dynamics stars: formation Astronomy Astrophysics Canadian galactic plane surveys HIIregions Interstellar mediums Ism: bubbles ISM: Kinematics and dynamics Multi-wavelength study Stars: formation Young stellar objects Supernovae |
| description |
Aims. We carry out a multiwavelength study to characterize the HI supershell designated GS118+01-44, and to analyse its possible origin. Methods. A multiwavelength study has been carried out to study the supershell and its environs. We performed an analysis of the HI, CO, radio continuum, and infrared emission distributions. Results. The Canadian Galactic Plane Survey (CGPS) HI data reveals that GS118+01-44 is centred at (l,b) = (117°.7, 1°.4) with a systemic velocity of -44.3 km s -1 . According to Galactic rotation models this structure is located at 3.0 ± 0.6 kpc from the Sun. There are several HII regions and three supernova remnants (SNRs) catalogued in the region. On the other hand, the analysis of the temperature spectral index distribution shows that in the region there is a predominance of non-thermal emission. Infrared emission shows that cool temperatures dominate the area of the supershell. Concerning the origin of the structure, we found that even though several OB stars belonging to CasOB5 are located in the interior of GS118+01-44, an analysis of the energy injected by these stars through their stellar winds indicates that they do not have sufficient energy to create GS118+01-44. Therefore, an additional energy source is needed to explain the genesis of GS118+01-44. On the other hand, the presence of several HII regions and young stellar object candidates in the edges of GS118+01-44 shows that the region is still active in forming new stars. © ESO, 2016. |
| title |
The HI supershell GS118+01-44 and its role in the interstellar medium |
| title_short |
The HI supershell GS118+01-44 and its role in the interstellar medium |
| title_full |
The HI supershell GS118+01-44 and its role in the interstellar medium |
| title_fullStr |
The HI supershell GS118+01-44 and its role in the interstellar medium |
| title_full_unstemmed |
The HI supershell GS118+01-44 and its role in the interstellar medium |
| title_sort |
hi supershell gs118+01-44 and its role in the interstellar medium |
| publishDate |
2016 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046361_v585_n_p_Suad http://hdl.handle.net/20.500.12110/paper_00046361_v585_n_p_Suad |
| _version_ |
1768542060577554432 |