A multi-wavelength analysis of the diffuse H II region G25.8700+0.1350
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Título: | A multi-wavelength analysis of the diffuse H II region G25.8700+0.1350 |
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Autor/es: | Cichowolski, Silvina | Duronea, Nicolás U. | Suad, Laura A. | Reynoso, Estela M. | Dorda Laforet, Ricardo |
Grupo/s de investigación o GITE: | Astrofísica Estelar (AE) |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal |
Palabras clave: | Stars: formation | Stars: massive | ISM: bubbles | H II regions | Infrared: ISM |
Área/s de conocimiento: | Astronomía y Astrofísica |
Fecha de publicación: | 11-feb-2018 |
Editor: | Oxford University Press |
Cita bibliográfica: | Monthly Notices of the Royal Astronomical Society. 2018, 474(1): 647-661. doi:10.1093/mnras/stx2676 |
Resumen: | 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 arc-shaped 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. |
Patrocinador/es: | This project was partially financed by the Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET) of Argentina under projects PIP 01299, PIP 0226, PIP 00356 and PIP 00107, and Universidad Nacional de La Plata under 2012-2014 PPID/G002 and 11/G120. |
URI: | http://hdl.handle.net/10045/71807 |
ISSN: | 0035-8711 (Print) | 1365-2966 (Online) |
DOI: | 10.1093/mnras/stx2676 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1093/mnras/stx2676 |
Aparece en las colecciones: | INV - Astrofísica Estelar - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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2018_Cichowolski_etal_MNRAS.pdf | 5,4 MB | Adobe PDF | Abrir Vista previa | |
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