Triggered star formation in a molecular shell created by a SNR?

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We present a study of a new molecular shell, G 126.1-0.8-14, using available multiwavelength Galactic plane surveys and optical Gemini observations. A well-defined shell-like structure is observed in the CO(1-0) line emission at (l,b) = (126°.1, -0°.8), in the velocity range -10.5 to -15.5 km s<S...

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Detalles Bibliográficos
Autores principales: Cichowolski, Silvina, Pineault, Serge, Gamen, Roberto Claudio, Arnal, Edmundo Marcelo, Suad, Laura Andrea, Ortega, M. E.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2014
Materias:
Ciencias Astronómicas
HII regions
ISM: kinematics and dynamics
ISM: supernova remnants
Stars: formation
Stars: massive
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/85058
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-85058
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
HII regions
ISM: kinematics and dynamics
ISM: supernova remnants
Stars: formation
Stars: massive
spellingShingle Ciencias Astronómicas
HII regions
ISM: kinematics and dynamics
ISM: supernova remnants
Stars: formation
Stars: massive
Cichowolski, Silvina
Pineault, Serge
Gamen, Roberto Claudio
Arnal, Edmundo Marcelo
Suad, Laura Andrea
Ortega, M. E.
Triggered star formation in a molecular shell created by a SNR?
topic_facet Ciencias Astronómicas
HII regions
ISM: kinematics and dynamics
ISM: supernova remnants
Stars: formation
Stars: massive
description We present a study of a new molecular shell, G 126.1-0.8-14, using available multiwavelength Galactic plane surveys and optical Gemini observations. A well-defined shell-like structure is observed in the CO(1-0) line emission at (l,b) = (126°.1, -0°.8), in the velocity range -10.5 to -15.5 km s<SUP>-1</SUP>. The H I emission shows a region of low emissivity inside G 126.1-0.8-14, while radio continuum observations reveal faint non-thermal emission possibly related to this shell. Optical spectra obtained with Gemini South show the existence of B-type stars likely to be associated with G 126.1-0.8-14. An estimate of the stellar wind energy injected by these stars shows that they alone cannot be able to create such a structure. On the other hand, one supernova explosionwould provide enough energy to generate the shell. Using the MSX, IRAS and WISE point source catalogues we have found about 30 young stellar object candidates, whose birth could have been triggered by the expansion of G 126.1-0.8-14. In this context, Sh2-187 could be a consequence of the action on its surroundings of the most massive (and thus most evolve) of the stars formed by the expanding molecular shell.
format Articulo
Articulo
author Cichowolski, Silvina
Pineault, Serge
Gamen, Roberto Claudio
Arnal, Edmundo Marcelo
Suad, Laura Andrea
Ortega, M. E.
author_facet Cichowolski, Silvina
Pineault, Serge
Gamen, Roberto Claudio
Arnal, Edmundo Marcelo
Suad, Laura Andrea
Ortega, M. E.
author_sort Cichowolski, Silvina
title Triggered star formation in a molecular shell created by a SNR?
title_short Triggered star formation in a molecular shell created by a SNR?
title_full Triggered star formation in a molecular shell created by a SNR?
title_fullStr Triggered star formation in a molecular shell created by a SNR?
title_full_unstemmed Triggered star formation in a molecular shell created by a SNR?
title_sort triggered star formation in a molecular shell created by a snr?
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/85058
work_keys_str_mv AT cichowolskisilvina triggeredstarformationinamolecularshellcreatedbyasnr
AT pineaultserge triggeredstarformationinamolecularshellcreatedbyasnr
AT gamenrobertoclaudio triggeredstarformationinamolecularshellcreatedbyasnr
AT arnaledmundomarcelo triggeredstarformationinamolecularshellcreatedbyasnr
AT suadlauraandrea triggeredstarformationinamolecularshellcreatedbyasnr
AT ortegame triggeredstarformationinamolecularshellcreatedbyasnr
bdutipo_str Repositorios
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