On the thermal structure of the proto-super star cluster 13 in NGC 253

Using high angular resolution ALMA observations (0.02 arcsec approximate to 0.34 pc), we study the thermal structure and kinematics of the proto-super star cluster 13 in the central region of NGC 253 through their continuum and vibrationally excited HC3N emission from J = 24-23 and J = 26-25 lines a...

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Detalles Bibliográficos
Autores: Rico Villas, F., González Alfonso, Eduardo|||0000-0001-5285-8517, Martín Pintado, Jesús, Rivilla, V.M., Martín, S.
Tipo de recurso: artículo
Fecha de publicación:2022
País:España
Institución:Universidad de Alcalá (UAH)
Repositorio:e_Buah Biblioteca Digital Universidad de Alcalá
Idioma:inglés
OAI Identifier:oai:ebuah.uah.es:10017/67710
Acceso en línea:http://hdl.handle.net/10017/67710
https://dx.doi.org/10.1093/mnras/stac2260
Access Level:acceso abierto
Palabra clave:Galaxies: individual: NGC 253
Galaxies: ISM
Galaxies: nuclei
Galaxies: star clusters: general
Galaxies: starburst
Galaxies: star formation.
Astronomía
Astronomy
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spelling On the thermal structure of the proto-super star cluster 13 in NGC 253Rico Villas, F.González Alfonso, Eduardo|||0000-0001-5285-8517Martín Pintado, JesúsRivilla, V.M.Martín, S.Galaxies: individual: NGC 253Galaxies: ISMGalaxies: nucleiGalaxies: star clusters: generalGalaxies: starburstGalaxies: star formation.AstronomíaAstronomyUsing high angular resolution ALMA observations (0.02 arcsec approximate to 0.34 pc), we study the thermal structure and kinematics of the proto-super star cluster 13 in the central region of NGC 253 through their continuum and vibrationally excited HC3N emission from J = 24-23 and J = 26-25 lines arising from vibrational states up to v4 = 1. We have carried 2D-LTE and non-local radiative transfer modelling of the radial profile of the HC3N and continuum emission in concentric rings of 0.1 pc width. From the 2D-LTE analysis, we found a Super Hot Core (SHC) of 1.5 pc with very high vibrational temperatures (>500 K), and a jump in the radial velocity (21 km s(-1)) in the SE-NW direction. From the non-local models, we derive the HC3N column density, H2 density, and dust temperature (T-dust) profiles. Our results show that the thermal structure of the SHC is dominated by the greenhouse effect due to the high dust opacity in the IR, leading to an overestimation of the LTE T-dust and its derived luminosity. The kinematics and T-dust profile of the SHC suggest that star formation was likely triggered by a cloud-cloud collision. We compare proto-SSC 13 to other deeply embedded star-forming regions, and discuss the origin of the L-IR/M-H2 excess above similar to 100 L-circle dot M-circle dot(-1) observed in (U)LIRGs.Oxford Academic20222022-10-01journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10017/67710https://dx.doi.org/10.1093/mnras/stac2260reponame:e_Buah Biblioteca Digital Universidad de Alcaláinstname:Universidad de Alcalá (UAH)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:ebuah.uah.es:10017/677102026-06-18T11:13:07Z
dc.title.none.fl_str_mv On the thermal structure of the proto-super star cluster 13 in NGC 253
title On the thermal structure of the proto-super star cluster 13 in NGC 253
spellingShingle On the thermal structure of the proto-super star cluster 13 in NGC 253
Rico Villas, F.
Galaxies: individual: NGC 253
Galaxies: ISM
Galaxies: nuclei
Galaxies: star clusters: general
Galaxies: starburst
Galaxies: star formation.
Astronomía
Astronomy
title_short On the thermal structure of the proto-super star cluster 13 in NGC 253
title_full On the thermal structure of the proto-super star cluster 13 in NGC 253
title_fullStr On the thermal structure of the proto-super star cluster 13 in NGC 253
title_full_unstemmed On the thermal structure of the proto-super star cluster 13 in NGC 253
title_sort On the thermal structure of the proto-super star cluster 13 in NGC 253
dc.creator.none.fl_str_mv Rico Villas, F.
González Alfonso, Eduardo|||0000-0001-5285-8517
Martín Pintado, Jesús
Rivilla, V.M.
Martín, S.
author Rico Villas, F.
author_facet Rico Villas, F.
González Alfonso, Eduardo|||0000-0001-5285-8517
Martín Pintado, Jesús
Rivilla, V.M.
Martín, S.
author_role author
author2 González Alfonso, Eduardo|||0000-0001-5285-8517
Martín Pintado, Jesús
Rivilla, V.M.
Martín, S.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Galaxies: individual: NGC 253
Galaxies: ISM
Galaxies: nuclei
Galaxies: star clusters: general
Galaxies: starburst
Galaxies: star formation.
Astronomía
Astronomy
topic Galaxies: individual: NGC 253
Galaxies: ISM
Galaxies: nuclei
Galaxies: star clusters: general
Galaxies: starburst
Galaxies: star formation.
Astronomía
Astronomy
description Using high angular resolution ALMA observations (0.02 arcsec approximate to 0.34 pc), we study the thermal structure and kinematics of the proto-super star cluster 13 in the central region of NGC 253 through their continuum and vibrationally excited HC3N emission from J = 24-23 and J = 26-25 lines arising from vibrational states up to v4 = 1. We have carried 2D-LTE and non-local radiative transfer modelling of the radial profile of the HC3N and continuum emission in concentric rings of 0.1 pc width. From the 2D-LTE analysis, we found a Super Hot Core (SHC) of 1.5 pc with very high vibrational temperatures (>500 K), and a jump in the radial velocity (21 km s(-1)) in the SE-NW direction. From the non-local models, we derive the HC3N column density, H2 density, and dust temperature (T-dust) profiles. Our results show that the thermal structure of the SHC is dominated by the greenhouse effect due to the high dust opacity in the IR, leading to an overestimation of the LTE T-dust and its derived luminosity. The kinematics and T-dust profile of the SHC suggest that star formation was likely triggered by a cloud-cloud collision. We compare proto-SSC 13 to other deeply embedded star-forming regions, and discuss the origin of the L-IR/M-H2 excess above similar to 100 L-circle dot M-circle dot(-1) observed in (U)LIRGs.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-10-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10017/67710
https://dx.doi.org/10.1093/mnras/stac2260
url http://hdl.handle.net/10017/67710
https://dx.doi.org/10.1093/mnras/stac2260
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Oxford Academic
publisher.none.fl_str_mv Oxford Academic
dc.source.none.fl_str_mv reponame:e_Buah Biblioteca Digital Universidad de Alcalá
instname:Universidad de Alcalá (UAH)
instname_str Universidad de Alcalá (UAH)
reponame_str e_Buah Biblioteca Digital Universidad de Alcalá
collection e_Buah Biblioteca Digital Universidad de Alcalá
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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