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dc.contributor.author
Guarcello, M. G.
dc.contributor.author
Drake, J. J.
dc.contributor.author
Wright, N. J.
dc.contributor.author
Albacete Colombo, Juan Facundo
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dc.contributor.author
Clark, C.
dc.contributor.author
Ercolano, B.
dc.contributor.author
Flaccomio, E.
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Kashyap, V.
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Micela, G.
dc.contributor.author
Naylor, T.
dc.contributor.author
Schneider, N.
dc.contributor.author
Sciortino, S.
dc.contributor.author
Vink, J. S.
dc.date.available
2024-04-08T14:49:57Z
dc.date.issued
2023-10
dc.identifier.citation
Guarcello, M. G.; Drake, J. J.; Wright, N. J.; Albacete Colombo, Juan Facundo; Clark, C.; et al.; Photoevaporation and Close Encounters: How the Environment around Cygnus OB2 Affects the Evolution of Protoplanetary Disks; IOP Publishing; Astrophysical Journal Supplement Series; 269; 1; 10-2023; 1-18
dc.identifier.issn
0067-0049
dc.identifier.uri
http://hdl.handle.net/11336/232399
dc.description.abstract
In our Galaxy, star formation occurs in a variety of environments, with a large fraction of stars formed in clusters hosting massive stars. OB stars have important feedback on the evolution of protoplanetary disks orbiting around nearby young stars and likely on the process of planet formation occurring in them. The nearby massive association Cyg OB2 is an outstanding laboratory to study this feedback. It is the closest massive association to our Sun and hosts hundreds of massive stars and thousands of low-mass members, both with and without disks. In this paper, we analyze the spatial variation of the disk fraction (i.e., the fraction of cluster members bearing a disk) in Cyg OB2 and study its correlation with the local values of far-ultraviolet (FUV) and extreme-ultraviolet (EUV) radiation fields and the local stellar surface density. We present definitive evidence that disks are more rapidly dissipated in the regions of the association characterized by intense local UV fields and large stellar density. In particular, the FUV radiation dominates disk dissipation timescales in the proximity (i.e., within 0.5 pc) of the O stars. In the rest of the association, EUV photons potentially induce a significant mass loss from the irradiated disks across the entire association, but the efficiency of this process is reduced at increasing distances from the massivestars owing to absorption by the intervening intracluster material. We find that disk dissipation due to close stellar encounters is negligible in Cyg OB2 and likely to have affected 1% or fewer of the stellar population. Disk dissipation is instead dominated by photoevaporation. We also compare our results to what has been found in other young clusters with different massive populations, concluding that massive associations like Cyg OB2 are potentially hostile to protoplanetary disks but that the environments where disks can safely evolve in planetary systems are likely quite common in our Galaxy.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
IOP Publishing
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
star formation
dc.subject
pre main sequence stars
dc.subject.classification
Astronomía
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Photoevaporation and Close Encounters: How the Environment around Cygnus OB2 Affects the Evolution of Protoplanetary Disks
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-04-08T11:12:48Z
dc.journal.volume
269
dc.journal.number
1
dc.journal.pagination
1-18
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Guarcello, M. G.. Istituto Nazionale di Astrofísica. Osservatorio Astronómico di Palermo; Italia
dc.description.fil
Fil: Drake, J. J.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
dc.description.fil
Fil: Wright, N. J.. Keele University.; Reino Unido
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Fil: Albacete Colombo, Juan Facundo. Universidad Nacional de Rio Negro. Sede Atlantica. Departamento de Investigación en Ciencias Exactas, Naturales y de Ingenieria; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Confluencia; Argentina
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Fil: Clark, C.. Institute of Astronomy; Reino Unido
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Fil: Ercolano, B.. Universitat Erlangen-nurmberg. Astronomisches Institut-dr. Karl Remeis-sternwarte & Ecap; Alemania
dc.description.fil
Fil: Flaccomio, E.. Istituto Nazionale di Astrofísica. Osservatorio Astronómico di Palermo; Italia
dc.description.fil
Fil: Kashyap, V.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
dc.description.fil
Fil: Micela, G.. Istituto Nazionale di Astrofísica. Osservatorio Astronómico di Palermo; Italia
dc.description.fil
Fil: Naylor, T.. Keele University.; Reino Unido
dc.description.fil
Fil: Schneider, N.. University of Cologne; Alemania
dc.description.fil
Fil: Sciortino, S.. Istituto Nazionale di Astrofísica. Osservatorio Astronómico di Palermo; Italia
dc.description.fil
Fil: Vink, J. S.. No especifíca;
dc.journal.title
Astrophysical Journal Supplement Series
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3847/1538-4365/acdd67
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