Multifrequency study of the ring nebula SG 13

We investigate the morphology and kinematics of the interstellar medium in the environs of the open cluster Mrk 50, which includes the Wolf-Rayet star WR 157 and a number of early B-type stars. The analysis was performed using radio continuum images at 408 and 1420 MHz, and H i 21-cm line data taken...

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Autores principales: Vasquez, Javier, Cappa, Cristina Elisabet, Pineault, Serge
Formato: Articulo
Lenguaje:Inglés
Publicado: 2009
Materias:
Ciencias Astronómicas
H II regions
ISM: bubbles
Stars: Wolf-Rayet
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/82674
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-82674
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
H II regions
ISM: bubbles
Stars: Wolf-Rayet
spellingShingle Ciencias Astronómicas
H II regions
ISM: bubbles
Stars: Wolf-Rayet
Vasquez, Javier
Cappa, Cristina Elisabet
Pineault, Serge
Multifrequency study of the ring nebula SG 13
topic_facet Ciencias Astronómicas
H II regions
ISM: bubbles
Stars: Wolf-Rayet
description We investigate the morphology and kinematics of the interstellar medium in the environs of the open cluster Mrk 50, which includes the Wolf-Rayet star WR 157 and a number of early B-type stars. The analysis was performed using radio continuum images at 408 and 1420 MHz, and H i 21-cm line data taken from the Canadian Galactic Plane Survey, molecular observations of the <SUP>12</SUP>CO (J = 1 → 0) line at 115 GHz from the Five College Radio Astronomy Observatory and available mid- and far-infrared (FIR) observations obtained with the Midcourse Space Experiment and <i>IRAS</i> satellites, respectively. This study allowed the identification of the radio continuum and molecular counterpart of the ring nebula SG 13, while no neutral atomic structure was found to be associated. The nebula is also detected in the images in the mid- and FIR, showing the existence of dust well mixed with the ionized gas. We estimate the main physical parameters of the material linked to the nebula. The interstellar gas distribution in the environs of Mrk 50 is compatible with a stellar wind bubble created by the mass loss from WR 157. The distribution of young stellar object candidates in the region shows that the stellar formation activity may be present in the molecular shell that encircles the ring nebula.
format Articulo
Articulo
author Vasquez, Javier
Cappa, Cristina Elisabet
Pineault, Serge
author_facet Vasquez, Javier
Cappa, Cristina Elisabet
Pineault, Serge
author_sort Vasquez, Javier
title Multifrequency study of the ring nebula SG 13
title_short Multifrequency study of the ring nebula SG 13
title_full Multifrequency study of the ring nebula SG 13
title_fullStr Multifrequency study of the ring nebula SG 13
title_full_unstemmed Multifrequency study of the ring nebula SG 13
title_sort multifrequency study of the ring nebula sg 13
publishDate 2009
url http://sedici.unlp.edu.ar/handle/10915/82674
work_keys_str_mv AT vasquezjavier multifrequencystudyoftheringnebulasg13
AT cappacristinaelisabet multifrequencystudyoftheringnebulasg13
AT pineaultserge multifrequencystudyoftheringnebulasg13
bdutipo_str Repositorios
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