PHANGS–JWST First Results: Dust-embedded Star Clusters in NGC 7496 Selected via 3.3μm PAH Emission
- Autores
- Rodríguez, María Jimena
- Año de publicación
- 2023
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The earliest stages of star formation occur enshrouded in dust and are not observable in the optical. Here we leverage the extraordinary new high-resolution infrared imaging from JWST to begin the study of dust-embedded star clusters in nearby galaxies throughout the Local Volume. We present a technique for identifying dustembedded clusters in NGC 7496 (18.7 Mpc), the first galaxy to be observed by the PHANGS–JWST Cycle 1 Treasury Survey. We select sources that have strong 3.3 μm PAH emission based on a F300M − F335M color excess and identify 67 candidate embedded clusters. Only eight of these are found in the PHANGS-HST optically selected cluster catalog, and all are young (six have SED fit ages of ∼1 Myr). We find that this sample of embedded cluster candidates may significantly increase the census of young clusters in NGC 7496 from the PHANGS-HST catalog; the number of clusters younger than ∼2 Myr could be increased by a factor of 2. Candidates are preferentially located in dust lanes and are coincident with the peaks in the PHANGS-ALMA CO (2–1) maps. We take a first look at concentration indices, luminosity functions, SEDs spanning from 2700 Å to 21 μm, and stellar masses (estimated to be between ∼10⁴ and 10⁵ M☉). The methods tested here provide a basis for future work to derive accurate constraints on the physical properties of embedded clusters, characterize the completeness of cluster samples, and expand analysis to all 19 galaxies in the PHANGS–JWST sample, which will enable basic unsolved problems in star formation and cluster evolution to be addressed.
La lista completa de autores que integran el documento puede consultarse en el archivo.
Instituto de Astrofísica de La Plata - Materia
-
Ciencias Astronómicas
Star formation
Star clusters
Young star clusters
Spiral galaxies
Surveys
Polycyclic aromatic hydrocarbons
Interstellar dust - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/152610
Ver los metadatos del registro completo
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PHANGS–JWST First Results: Dust-embedded Star Clusters in NGC 7496 Selected via 3.3μm PAH EmissionRodríguez, María JimenaCiencias AstronómicasStar formationStar clustersYoung star clustersSpiral galaxiesSurveysPolycyclic aromatic hydrocarbonsInterstellar dustThe earliest stages of star formation occur enshrouded in dust and are not observable in the optical. Here we leverage the extraordinary new high-resolution infrared imaging from JWST to begin the study of dust-embedded star clusters in nearby galaxies throughout the Local Volume. We present a technique for identifying dustembedded clusters in NGC 7496 (18.7 Mpc), the first galaxy to be observed by the PHANGS–JWST Cycle 1 Treasury Survey. We select sources that have strong 3.3 μm PAH emission based on a F300M − F335M color excess and identify 67 candidate embedded clusters. Only eight of these are found in the PHANGS-HST optically selected cluster catalog, and all are young (six have SED fit ages of ∼1 Myr). We find that this sample of embedded cluster candidates may significantly increase the census of young clusters in NGC 7496 from the PHANGS-HST catalog; the number of clusters younger than ∼2 Myr could be increased by a factor of 2. Candidates are preferentially located in dust lanes and are coincident with the peaks in the PHANGS-ALMA CO (2–1) maps. We take a first look at concentration indices, luminosity functions, SEDs spanning from 2700 Å to 21 μm, and stellar masses (estimated to be between ∼10⁴ and 10⁵ M☉). The methods tested here provide a basis for future work to derive accurate constraints on the physical properties of embedded clusters, characterize the completeness of cluster samples, and expand analysis to all 19 galaxies in the PHANGS–JWST sample, which will enable basic unsolved problems in star formation and cluster evolution to be addressed.La lista completa de autores que integran el documento puede consultarse en el archivo.Instituto de Astrofísica de La Plata2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/152610enginfo:eu-repo/semantics/altIdentifier/issn/2041-8213info:eu-repo/semantics/altIdentifier/doi/10.3847/2041-8213/aca653info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:39:32Zoai:sedici.unlp.edu.ar:10915/152610Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:39:32.527SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
PHANGS–JWST First Results: Dust-embedded Star Clusters in NGC 7496 Selected via 3.3μm PAH Emission |
title |
PHANGS–JWST First Results: Dust-embedded Star Clusters in NGC 7496 Selected via 3.3μm PAH Emission |
spellingShingle |
PHANGS–JWST First Results: Dust-embedded Star Clusters in NGC 7496 Selected via 3.3μm PAH Emission Rodríguez, María Jimena Ciencias Astronómicas Star formation Star clusters Young star clusters Spiral galaxies Surveys Polycyclic aromatic hydrocarbons Interstellar dust |
title_short |
PHANGS–JWST First Results: Dust-embedded Star Clusters in NGC 7496 Selected via 3.3μm PAH Emission |
title_full |
PHANGS–JWST First Results: Dust-embedded Star Clusters in NGC 7496 Selected via 3.3μm PAH Emission |
title_fullStr |
PHANGS–JWST First Results: Dust-embedded Star Clusters in NGC 7496 Selected via 3.3μm PAH Emission |
title_full_unstemmed |
PHANGS–JWST First Results: Dust-embedded Star Clusters in NGC 7496 Selected via 3.3μm PAH Emission |
title_sort |
PHANGS–JWST First Results: Dust-embedded Star Clusters in NGC 7496 Selected via 3.3μm PAH Emission |
dc.creator.none.fl_str_mv |
Rodríguez, María Jimena |
author |
Rodríguez, María Jimena |
author_facet |
Rodríguez, María Jimena |
author_role |
author |
dc.subject.none.fl_str_mv |
Ciencias Astronómicas Star formation Star clusters Young star clusters Spiral galaxies Surveys Polycyclic aromatic hydrocarbons Interstellar dust |
topic |
Ciencias Astronómicas Star formation Star clusters Young star clusters Spiral galaxies Surveys Polycyclic aromatic hydrocarbons Interstellar dust |
dc.description.none.fl_txt_mv |
The earliest stages of star formation occur enshrouded in dust and are not observable in the optical. Here we leverage the extraordinary new high-resolution infrared imaging from JWST to begin the study of dust-embedded star clusters in nearby galaxies throughout the Local Volume. We present a technique for identifying dustembedded clusters in NGC 7496 (18.7 Mpc), the first galaxy to be observed by the PHANGS–JWST Cycle 1 Treasury Survey. We select sources that have strong 3.3 μm PAH emission based on a F300M − F335M color excess and identify 67 candidate embedded clusters. Only eight of these are found in the PHANGS-HST optically selected cluster catalog, and all are young (six have SED fit ages of ∼1 Myr). We find that this sample of embedded cluster candidates may significantly increase the census of young clusters in NGC 7496 from the PHANGS-HST catalog; the number of clusters younger than ∼2 Myr could be increased by a factor of 2. Candidates are preferentially located in dust lanes and are coincident with the peaks in the PHANGS-ALMA CO (2–1) maps. We take a first look at concentration indices, luminosity functions, SEDs spanning from 2700 Å to 21 μm, and stellar masses (estimated to be between ∼10⁴ and 10⁵ M☉). The methods tested here provide a basis for future work to derive accurate constraints on the physical properties of embedded clusters, characterize the completeness of cluster samples, and expand analysis to all 19 galaxies in the PHANGS–JWST sample, which will enable basic unsolved problems in star formation and cluster evolution to be addressed. La lista completa de autores que integran el documento puede consultarse en el archivo. Instituto de Astrofísica de La Plata |
description |
The earliest stages of star formation occur enshrouded in dust and are not observable in the optical. Here we leverage the extraordinary new high-resolution infrared imaging from JWST to begin the study of dust-embedded star clusters in nearby galaxies throughout the Local Volume. We present a technique for identifying dustembedded clusters in NGC 7496 (18.7 Mpc), the first galaxy to be observed by the PHANGS–JWST Cycle 1 Treasury Survey. We select sources that have strong 3.3 μm PAH emission based on a F300M − F335M color excess and identify 67 candidate embedded clusters. Only eight of these are found in the PHANGS-HST optically selected cluster catalog, and all are young (six have SED fit ages of ∼1 Myr). We find that this sample of embedded cluster candidates may significantly increase the census of young clusters in NGC 7496 from the PHANGS-HST catalog; the number of clusters younger than ∼2 Myr could be increased by a factor of 2. Candidates are preferentially located in dust lanes and are coincident with the peaks in the PHANGS-ALMA CO (2–1) maps. We take a first look at concentration indices, luminosity functions, SEDs spanning from 2700 Å to 21 μm, and stellar masses (estimated to be between ∼10⁴ and 10⁵ M☉). The methods tested here provide a basis for future work to derive accurate constraints on the physical properties of embedded clusters, characterize the completeness of cluster samples, and expand analysis to all 19 galaxies in the PHANGS–JWST sample, which will enable basic unsolved problems in star formation and cluster evolution to be addressed. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/152610 |
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http://sedici.unlp.edu.ar/handle/10915/152610 |
dc.language.none.fl_str_mv |
eng |
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eng |
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info:eu-repo/semantics/altIdentifier/issn/2041-8213 info:eu-repo/semantics/altIdentifier/doi/10.3847/2041-8213/aca653 |
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openAccess |
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