The CARMA-NRO Orion Survey: Filamentary structure as seen in C<sup>18</sup>O emission

Context. We present an initial overview of the filamentary structure in the Orion A molecular cloud utilizing a high angular and velocity resolution C18O(1–0) emission map that was recently produced as part of the CARMA-NRO Orion Survey. Aims. The main goal of this study is to build a credible metho...

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Autores: Suri, S., Sánchez-Monge, A., Schilke, P., Clarke, S.D., Smith, R.J., Ossenkopf-Okada, V., Klessen, R., Padoan, Paolo, Goldsmith, P., Arce, H.G., Bally, J., Carpenter, J.M., Ginsburg, A., Johnstone, D., Kauffmann, J., Kong, S., Lis, D.C., Mairs, S., Pillai, T., Pineda, J.E., Duarte-Cabral, A.
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/216163
Acesso em linha:http://hdl.handle.net/2445/216163
Access Level:acceso abierto
Palavra-chave:Astronomia
Núvols
Estels
Astronomy
Clouds
Stars
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spelling The CARMA-NRO Orion Survey: Filamentary structure as seen in C<sup>18</sup>O emissionSuri, S.Sánchez-Monge, A.Schilke, P.Clarke, S.D.Smith, R.J.Ossenkopf-Okada, V.Klessen, R.Padoan, PaoloGoldsmith, P.Arce, H.G.Bally, J.Carpenter, J.M.Ginsburg, A.Johnstone, D.Kauffmann, J.Kong, S.Lis, D.C.Mairs, S.Pillai, T.Pineda, J.E.Duarte-Cabral, A.AstronomiaNúvolsEstelsAstronomyCloudsStarsContext. We present an initial overview of the filamentary structure in the Orion A molecular cloud utilizing a high angular and velocity resolution C18O(1–0) emission map that was recently produced as part of the CARMA-NRO Orion Survey. Aims. The main goal of this study is to build a credible method to study varying widths of filaments which has previously been linked to star formation in molecular clouds. Due to the diverse star forming activities taking place throughout its ∼20 pc length, together with its proximity of 388 pc, the Orion A molecular cloud provides an excellent laboratory for such an experiment to be carried out with high resolution and high sensitivity. Methods. Using the widely-known structure identification algorithm, DisPerSE, on a three-dimensional (PPV) C18O cube, we identify 625 relatively short (the longest being 1.74 pc) filaments over the entire cloud. We studied the distribution of filament widths using FilChaP, a python package that we have developed and made publicly available. Results. We find that the filaments identified in a two square-degree PPV cube do not overlap spatially, except for the complex OMC-4 region that shows distinct velocity components along the line of sight. The filament widths vary between 0.02 and 0.3 pc depending on the amount of substructure that a filament possesses. The more substructure a filament has, the larger is its width. We also find that despite this variation, the filament width shows no anticorrelation with the central column density which is in agreement with previous Herschel observations.EDP Sciences2024202420192024info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion1 p.application/pdfhttp://hdl.handle.net/2445/216163http://hdl.handle.net/2445/216163Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1051/0004-6361/201834049Astronomy & Astrophysics, 2019https://doi.org/10.1051/0004-6361/201834049(c) The European Southern Observatory (ESO), 2019info:eu-repo/semantics/openAccessoai:recercat.cat:2445/2161632026-05-29T05:05:01Z
dc.title.none.fl_str_mv The CARMA-NRO Orion Survey: Filamentary structure as seen in C<sup>18</sup>O emission
title The CARMA-NRO Orion Survey: Filamentary structure as seen in C<sup>18</sup>O emission
spellingShingle The CARMA-NRO Orion Survey: Filamentary structure as seen in C<sup>18</sup>O emission
Suri, S.
Astronomia
Núvols
Estels
Astronomy
Clouds
Stars
title_short The CARMA-NRO Orion Survey: Filamentary structure as seen in C<sup>18</sup>O emission
title_full The CARMA-NRO Orion Survey: Filamentary structure as seen in C<sup>18</sup>O emission
title_fullStr The CARMA-NRO Orion Survey: Filamentary structure as seen in C<sup>18</sup>O emission
title_full_unstemmed The CARMA-NRO Orion Survey: Filamentary structure as seen in C<sup>18</sup>O emission
title_sort The CARMA-NRO Orion Survey: Filamentary structure as seen in C<sup>18</sup>O emission
dc.creator.none.fl_str_mv Suri, S.
Sánchez-Monge, A.
Schilke, P.
Clarke, S.D.
Smith, R.J.
Ossenkopf-Okada, V.
Klessen, R.
Padoan, Paolo
Goldsmith, P.
Arce, H.G.
Bally, J.
Carpenter, J.M.
Ginsburg, A.
Johnstone, D.
Kauffmann, J.
Kong, S.
Lis, D.C.
Mairs, S.
Pillai, T.
Pineda, J.E.
Duarte-Cabral, A.
author Suri, S.
author_facet Suri, S.
Sánchez-Monge, A.
Schilke, P.
Clarke, S.D.
Smith, R.J.
Ossenkopf-Okada, V.
Klessen, R.
Padoan, Paolo
Goldsmith, P.
Arce, H.G.
Bally, J.
Carpenter, J.M.
Ginsburg, A.
Johnstone, D.
Kauffmann, J.
Kong, S.
Lis, D.C.
Mairs, S.
Pillai, T.
Pineda, J.E.
Duarte-Cabral, A.
author_role author
author2 Sánchez-Monge, A.
Schilke, P.
Clarke, S.D.
Smith, R.J.
Ossenkopf-Okada, V.
Klessen, R.
Padoan, Paolo
Goldsmith, P.
Arce, H.G.
Bally, J.
Carpenter, J.M.
Ginsburg, A.
Johnstone, D.
Kauffmann, J.
Kong, S.
Lis, D.C.
Mairs, S.
Pillai, T.
Pineda, J.E.
Duarte-Cabral, A.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Astronomia
Núvols
Estels
Astronomy
Clouds
Stars
topic Astronomia
Núvols
Estels
Astronomy
Clouds
Stars
description Context. We present an initial overview of the filamentary structure in the Orion A molecular cloud utilizing a high angular and velocity resolution C18O(1–0) emission map that was recently produced as part of the CARMA-NRO Orion Survey. Aims. The main goal of this study is to build a credible method to study varying widths of filaments which has previously been linked to star formation in molecular clouds. Due to the diverse star forming activities taking place throughout its ∼20 pc length, together with its proximity of 388 pc, the Orion A molecular cloud provides an excellent laboratory for such an experiment to be carried out with high resolution and high sensitivity. Methods. Using the widely-known structure identification algorithm, DisPerSE, on a three-dimensional (PPV) C18O cube, we identify 625 relatively short (the longest being 1.74 pc) filaments over the entire cloud. We studied the distribution of filament widths using FilChaP, a python package that we have developed and made publicly available. Results. We find that the filaments identified in a two square-degree PPV cube do not overlap spatially, except for the complex OMC-4 region that shows distinct velocity components along the line of sight. The filament widths vary between 0.02 and 0.3 pc depending on the amount of substructure that a filament possesses. The more substructure a filament has, the larger is its width. We also find that despite this variation, the filament width shows no anticorrelation with the central column density which is in agreement with previous Herschel observations.
publishDate 2019
dc.date.none.fl_str_mv 2019
2024
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/2445/216163
http://hdl.handle.net/2445/216163
url http://hdl.handle.net/2445/216163
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1051/0004-6361/201834049
Astronomy & Astrophysics, 2019
https://doi.org/10.1051/0004-6361/201834049
dc.rights.none.fl_str_mv (c) The European Southern Observatory (ESO), 2019
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) The European Southern Observatory (ESO), 2019
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1 p.
application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869411965150953472
score 15,198674

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