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

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 kms-1. Th...

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Detalles Bibliográficos
Publicado: 2014
Materias:
HII regions
ISM: kinematics and dynamics
ISM: supernova remnants
Stars: formation
Stars: massive
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v438_n2_p1089_Cichowolski
http://hdl.handle.net/20.500.12110/paper_00358711_v438_n2_p1089_Cichowolski
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00358711_v438_n2_p1089_Cichowolski
record_format dspace
spelling paper:paper_00358711_v438_n2_p1089_Cichowolski2023-06-08T15:01:37Z Triggered star formation in a molecular shell created by a SNR? HII regions ISM: kinematics and dynamics ISM: supernova remnants Stars: formation Stars: massive 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 kms-1. The HI 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. © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v438_n2_p1089_Cichowolski http://hdl.handle.net/20.500.12110/paper_00358711_v438_n2_p1089_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 HII regions
ISM: kinematics and dynamics
ISM: supernova remnants
Stars: formation
Stars: massive
spellingShingle HII regions
ISM: kinematics and dynamics
ISM: supernova remnants
Stars: formation
Stars: massive
Triggered star formation in a molecular shell created by a SNR?
topic_facet 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 kms-1. The HI 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. © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.
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 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v438_n2_p1089_Cichowolski
http://hdl.handle.net/20.500.12110/paper_00358711_v438_n2_p1089_Cichowolski
_version_ 1768546058798891008

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