A multi-wavelength analysis of the diffuse HII region G25.8700+0.1350

We present a multi-wavelength investigation of the H II region G25.8700+0.1350, located in the inner part of the Galaxy. In radio continuum emission, the region is seen as a bright arcshaped structure. An analysis of the H I line suggests that G25.8700+0.1350 lies at a distance of 6.5 kpc. The ioniz...

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Detalles Bibliográficos
Publicado: 2018
Materias:
H II regions
Infrared: ISM
ISM: bubbles
Stars: formation
Stars: massive
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v474_n1_p647_Cichowolski
http://hdl.handle.net/20.500.12110/paper_00358711_v474_n1_p647_Cichowolski
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00358711_v474_n1_p647_Cichowolski
record_format dspace
spelling paper:paper_00358711_v474_n1_p647_Cichowolski2023-06-08T15:01:48Z A multi-wavelength analysis of the diffuse HII region G25.8700+0.1350 H II regions Infrared: ISM ISM: bubbles Stars: formation Stars: massive We present a multi-wavelength investigation of the H II region G25.8700+0.1350, located in the inner part of the Galaxy. In radio continuum emission, the region is seen as a bright arcshaped structure. An analysis of the H I line suggests that G25.8700+0.1350 lies at a distance of 6.5 kpc. The ionized gas is bordered by a photodissociation region, which is encircled by a molecular structure where four molecular clumps are detected. At infrared wavelengths, the region is also very conspicuous. Given the high level of visual absorption in the region, the exciting stars should be searched for in the infrared band. In this context, we found in the literature one Wolf-Rayet and one red supergiant, which, together with 37 2MASS sources that are candidate O-type stars, could be related to the origin of G25.8700+0.1350. Finally, as expanding H II regions are hypothesized to trigger star formation, we used different infrared point source catalogues to search for young stellar object candidates (cYSOs). A total of 45 cYSOs were identified projected on to the molecular clouds. © 2017 The Authors. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v474_n1_p647_Cichowolski http://hdl.handle.net/20.500.12110/paper_00358711_v474_n1_p647_Cichowolski
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic H II regions
Infrared: ISM
ISM: bubbles
Stars: formation
Stars: massive
spellingShingle H II regions
Infrared: ISM
ISM: bubbles
Stars: formation
Stars: massive
A multi-wavelength analysis of the diffuse HII region G25.8700+0.1350
topic_facet H II regions
Infrared: ISM
ISM: bubbles
Stars: formation
Stars: massive
description We present a multi-wavelength investigation of the H II region G25.8700+0.1350, located in the inner part of the Galaxy. In radio continuum emission, the region is seen as a bright arcshaped structure. An analysis of the H I line suggests that G25.8700+0.1350 lies at a distance of 6.5 kpc. The ionized gas is bordered by a photodissociation region, which is encircled by a molecular structure where four molecular clumps are detected. At infrared wavelengths, the region is also very conspicuous. Given the high level of visual absorption in the region, the exciting stars should be searched for in the infrared band. In this context, we found in the literature one Wolf-Rayet and one red supergiant, which, together with 37 2MASS sources that are candidate O-type stars, could be related to the origin of G25.8700+0.1350. Finally, as expanding H II regions are hypothesized to trigger star formation, we used different infrared point source catalogues to search for young stellar object candidates (cYSOs). A total of 45 cYSOs were identified projected on to the molecular clouds. © 2017 The Authors.
title A multi-wavelength analysis of the diffuse HII region G25.8700+0.1350
title_short A multi-wavelength analysis of the diffuse HII region G25.8700+0.1350
title_full A multi-wavelength analysis of the diffuse HII region G25.8700+0.1350
title_fullStr A multi-wavelength analysis of the diffuse HII region G25.8700+0.1350
title_full_unstemmed A multi-wavelength analysis of the diffuse HII region G25.8700+0.1350
title_sort multi-wavelength analysis of the diffuse hii region g25.8700+0.1350
publishDate 2018
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v474_n1_p647_Cichowolski
http://hdl.handle.net/20.500.12110/paper_00358711_v474_n1_p647_Cichowolski
_version_ 1768543937303150592

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