Changing material around (2060) Chiron revealed by an occultation on December 15, 2022

Full list of authors: Ortiz, J. L.; Pereira, C. L.; Sicardy, B.; Braga-Ribas, F.; Takey, A.; Fouad, A. M.; Shaker, A. A.; Kaspi, S.; Brosch, N.; Kretlow, M.; Leiva, R.; Desmars, J.; Morgado, B. E.; Morales, N.; Vara-Lubiano, M.; Santos-Sanz, P.; Fernández-Valenzuela, E.; Souami, D.; Duffard, R.; Rom...

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Detalles Bibliográficos
Autores: Ortiz, José Luis, Kretlow, Mike, Leiva, Rodrigo, Morales, Nicolás, Vara-Lubiano, M., Santos Sanz, Pablo, Fernández Valenzuela, Estela del Mar, Duffard, René D., Morales, Rafael, Alvarez Candal, Alvaro, Rizos, Juan L., Gómez Limón, J. M.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/354773
Acceso en línea:http://hdl.handle.net/10261/354773
Access Level:acceso abierto
Palabra clave:Asteroids: individual: Chiron
Comets: general
Kuiper belt: general
Minor planets
Occultations
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network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv Changing material around (2060) Chiron revealed by an occultation on December 15, 2022
title Changing material around (2060) Chiron revealed by an occultation on December 15, 2022
spellingShingle Changing material around (2060) Chiron revealed by an occultation on December 15, 2022
Ortiz, José Luis
Asteroids: individual: Chiron
Comets: general
Kuiper belt: general
Minor planets
Occultations
title_short Changing material around (2060) Chiron revealed by an occultation on December 15, 2022
title_full Changing material around (2060) Chiron revealed by an occultation on December 15, 2022
title_fullStr Changing material around (2060) Chiron revealed by an occultation on December 15, 2022
title_full_unstemmed Changing material around (2060) Chiron revealed by an occultation on December 15, 2022
title_sort Changing material around (2060) Chiron revealed by an occultation on December 15, 2022
dc.creator.none.fl_str_mv Ortiz, José Luis
Kretlow, Mike
Leiva, Rodrigo
Morales, Nicolás
Vara-Lubiano, M.
Santos Sanz, Pablo
Fernández Valenzuela, Estela del Mar
Duffard, René D.
Morales, Rafael
Alvarez Candal, Alvaro
Rizos, Juan L.
Gómez Limón, J. M.
author Ortiz, José Luis
author_facet Ortiz, José Luis
Kretlow, Mike
Leiva, Rodrigo
Morales, Nicolás
Vara-Lubiano, M.
Santos Sanz, Pablo
Fernández Valenzuela, Estela del Mar
Duffard, René D.
Morales, Rafael
Alvarez Candal, Alvaro
Rizos, Juan L.
Gómez Limón, J. M.
author_role author
author2 Kretlow, Mike
Leiva, Rodrigo
Morales, Nicolás
Vara-Lubiano, M.
Santos Sanz, Pablo
Fernández Valenzuela, Estela del Mar
Duffard, René D.
Morales, Rafael
Alvarez Candal, Alvaro
Rizos, Juan L.
Gómez Limón, J. M.
author2_role author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Agencia Estatal de Investigación (España)
Junta de Andalucía
Ministerio de Ciencia e Innovación (España)
Science and Technology Development Fund (Egypt)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Asteroids: individual: Chiron
Comets: general
Kuiper belt: general
Minor planets
Occultations
topic Asteroids: individual: Chiron
Comets: general
Kuiper belt: general
Minor planets
Occultations
description Full list of authors: Ortiz, J. L.; Pereira, C. L.; Sicardy, B.; Braga-Ribas, F.; Takey, A.; Fouad, A. M.; Shaker, A. A.; Kaspi, S.; Brosch, N.; Kretlow, M.; Leiva, R.; Desmars, J.; Morgado, B. E.; Morales, N.; Vara-Lubiano, M.; Santos-Sanz, P.; Fernández-Valenzuela, E.; Souami, D.; Duffard, R.; Rommel, F. L.; Kilic, Y.; Erece, O.; Koseoglu, D.; Ege, E.; Morales, R.; Alvarez-Candal, A.; Rizos, J. L.; Gómez-Limón, J. M.; Assafin, M.; Vieira-Martins, R.; Gomes-Júnior, A. R.; Camargo, J. I. B.; Lecacheux, J.
publishDate 2023
dc.date.none.fl_str_mv 2023
2024
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/354773
url http://hdl.handle.net/10261/354773
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-112789GB-I00
info:eu-repo/grantAgreement/AEI/Programa Estatal para Impulsar la Investigación Científico-Técnica y su Transferencia 2021-2023/CEX2021-001131-S
http://dx.doi.org/10.1051/0004-6361/202347025
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
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spelling Changing material around (2060) Chiron revealed by an occultation on December 15, 2022Ortiz, José LuisKretlow, MikeLeiva, RodrigoMorales, NicolásVara-Lubiano, M.Santos Sanz, PabloFernández Valenzuela, Estela del MarDuffard, René D.Morales, RafaelAlvarez Candal, AlvaroRizos, Juan L.Gómez Limón, J. M.Asteroids: individual: ChironComets: generalKuiper belt: generalMinor planetsOccultationsFull list of authors: Ortiz, J. L.; Pereira, C. L.; Sicardy, B.; Braga-Ribas, F.; Takey, A.; Fouad, A. M.; Shaker, A. A.; Kaspi, S.; Brosch, N.; Kretlow, M.; Leiva, R.; Desmars, J.; Morgado, B. E.; Morales, N.; Vara-Lubiano, M.; Santos-Sanz, P.; Fernández-Valenzuela, E.; Souami, D.; Duffard, R.; Rommel, F. L.; Kilic, Y.; Erece, O.; Koseoglu, D.; Ege, E.; Morales, R.; Alvarez-Candal, A.; Rizos, J. L.; Gómez-Limón, J. M.; Assafin, M.; Vieira-Martins, R.; Gomes-Júnior, A. R.; Camargo, J. I. B.; Lecacheux, J.We were able to accurately predict the shadow path and successfully observe an occultation of a bright star by Chiron on December 15, 2022. The Kottamia Astronomical Observatory in Egypt did not detect the occultation by the solid body, but we found three extinction features in the light curve that had symmetrical counterparts with respect to the central time of the occultation. One of the features is broad and shallow, whereas the other two features are sharper, with a maximum extinction of ∼25% at the achieved spatial resolution of 19 km per data point. From the Wise Observatory in Israel, we detected the occultation caused by the main body and several extinction features surrounding the body. When all the secondary features are plotted in the sky plane, we find that they can be caused by a broad ∼580 km disk with concentrations at radii of 325 ± 16 km and 423 ± 11 km surrounding Chiron. At least one of these structures appears to be outside the Roche limit. The ecliptic coordinates of the pole of the disk are λ = 151° ±8 and β = 18° ±11, in agreement with previous results. We also reveal our long-term photometry results, indicating that Chiron had suffered a brightness outburst of at least 0.6 mag between March and September 2021 and that Chiron was still somewhat brighter at the occultation date than at its nominal pre-outburst phase. The outermost extinction features might be consistent with a bound or temporarily bound structure associated with the brightness increase. However, the nature of the brightness outburst is unclear, and it is also unclear whether the dust or ice released in the outburst could be feeding a putative ring structure or whether it is emanating from it. © The Authors 2023.Part of this work was supported by the Spanish projects PID2020-112789GB-I00 from AEI and Proyecto de Excelencia de la Junta de Andalucia PY20-01309. Financial support from the grant CEX2021-001131-S funded by MCIN/AEI/ 10.13039/501100011033 is also acknowledged. This research is partly based on observations taken with the 1.88-m telescope at the Kottamia Astronomical Observatory (KAO), operated by researchers at the National Research Institute of Astronomy and Geophysics (NRIAG), Egypt. The Egyptian team acknowledges support from Science, Technology & amp; Innovation Funding Authority (STDF) under grant number 45779. C.L.P is thankful for the support of the CAPES and FAPERJ/DSC-10 (E26/204.141/2022).Peer reviewedEDP SciencesAgencia Estatal de Investigación (España)Junta de AndalucíaMinisterio de Ciencia e Innovación (España)Science and Technology Development Fund (Egypt)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2024202420232024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/354773reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-112789GB-I00info:eu-repo/grantAgreement/AEI/Programa Estatal para Impulsar la Investigación Científico-Técnica y su Transferencia 2021-2023/CEX2021-001131-Shttp://dx.doi.org/10.1051/0004-6361/202347025Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3547732026-05-22T06:33:51Z
score 15.812429

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