Puzzling asteroid 21 Lutetia: our knowledge prior to the Rosetta fly-by

Autores
Belskaya, I. N.; Fornasier, S.; Krugly, Yu N.; Shevchenko, V. G.; Gaftonyuk, N. M.; Barucci, M. A.; Fulchignoni, M.; Gil Hutton, Ricardo Alfredo
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Aims. A wide observational campaign was carried out in 2004–2009 that aimed to complete the ground-based investigation of Lutetia prior to the Rosetta fly-by in July 2010. Methods. We obtained BVRI photometric and V-band polarimetric measurements over a wide range of phase angles, and visible and infrared spectra in the 0.4–2.4 μm range. We analyze them with previously published data to retrieve information about Lutetia's surface properties. Results. Values of lightcurve amplitudes, absolute magnitude, opposition effect, phase coefficient, and BVRI colors of Lutetia surface seen at near pole-on aspect are determined. We define more precisely parameters of polarization phase curve and show their distinct deviation from any other moderate-albedo asteroid. An indication of possible variations in both polarization and spectral data across the asteroid surface are found. To explain features found by different techniques, we propose that (i) Lutetia has a non-convex shape, probably due to a large crater, and heterogeneous surface properties probably related to surface morphology; (ii) at least part of the surface is covered by a fine-grained regolith of particle size smaller than 20 μm; (iii) the closest meteorite analogues of Lutetia's surface composition are particular types of carbonaceous chondrites, or Lutetia has specific surface composition that is not representative among studied meteorites.
Fil: Belskaya, I. N.. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia. Kharkiv Karazin National University; Ucrania
Fil: Fornasier, S.. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia. Université Paris Diderot - Paris 7; Francia
Fil: Krugly, Yu N.. Kharkiv Karazin National University; Ucrania
Fil: Shevchenko, V. G.. Kharkiv Karazin National University; Ucrania
Fil: Gaftonyuk, N. M.. Crimean Astrophysical Observatory; Ucrania
Fil: Barucci, M. A.. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia
Fil: Fulchignoni, M.. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia. Université Paris Diderot - Paris 7; Francia
Fil: Gil Hutton, Ricardo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico "El Leoncito". Universidad Nacional de Córdoba. Complejo Astronómico "El Leoncito". Universidad Nacional de la Plata. Complejo Astronómico "El Leoncito". Universidad Nacional de San Juan. Complejo Astronómico "El Leoncito"; Argentina
Materia
Minor planets
Asteroids
Polarimetry
Photometry
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/29508
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Puzzling asteroid 21 Lutetia: our knowledge prior to the Rosetta fly-byBelskaya, I. N.Fornasier, S.Krugly, Yu N.Shevchenko, V. G.Gaftonyuk, N. M.Barucci, M. A.Fulchignoni, M.Gil Hutton, Ricardo AlfredoMinor planetsAsteroidsPolarimetryPhotometryhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Aims. A wide observational campaign was carried out in 2004–2009 that aimed to complete the ground-based investigation of Lutetia prior to the Rosetta fly-by in July 2010. Methods. We obtained BVRI photometric and V-band polarimetric measurements over a wide range of phase angles, and visible and infrared spectra in the 0.4–2.4 μm range. We analyze them with previously published data to retrieve information about Lutetia's surface properties. Results. Values of lightcurve amplitudes, absolute magnitude, opposition effect, phase coefficient, and BVRI colors of Lutetia surface seen at near pole-on aspect are determined. We define more precisely parameters of polarization phase curve and show their distinct deviation from any other moderate-albedo asteroid. An indication of possible variations in both polarization and spectral data across the asteroid surface are found. To explain features found by different techniques, we propose that (i) Lutetia has a non-convex shape, probably due to a large crater, and heterogeneous surface properties probably related to surface morphology; (ii) at least part of the surface is covered by a fine-grained regolith of particle size smaller than 20 μm; (iii) the closest meteorite analogues of Lutetia's surface composition are particular types of carbonaceous chondrites, or Lutetia has specific surface composition that is not representative among studied meteorites.Fil: Belskaya, I. N.. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia. Kharkiv Karazin National University; UcraniaFil: Fornasier, S.. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia. Université Paris Diderot - Paris 7; FranciaFil: Krugly, Yu N.. Kharkiv Karazin National University; UcraniaFil: Shevchenko, V. G.. Kharkiv Karazin National University; UcraniaFil: Gaftonyuk, N. M.. Crimean Astrophysical Observatory; UcraniaFil: Barucci, M. A.. Centre National de la Recherche Scientifique. Observatoire de Paris; FranciaFil: Fulchignoni, M.. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia. Université Paris Diderot - Paris 7; FranciaFil: Gil Hutton, Ricardo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico "El Leoncito". Universidad Nacional de Córdoba. Complejo Astronómico "El Leoncito". Universidad Nacional de la Plata. Complejo Astronómico "El Leoncito". Universidad Nacional de San Juan. Complejo Astronómico "El Leoncito"; ArgentinaEdp Sciences2010-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/29508Belskaya, I. N.; Fornasier, S.; Krugly, Yu N.; Shevchenko, V. G.; Gaftonyuk, N. M.; et al.; Puzzling asteroid 21 Lutetia: our knowledge prior to the Rosetta fly-by; Edp Sciences; Astronomy And Astrophysics; 515; 6-2010; 29-36; A290004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201013994info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2010/07/aa13994-10/aa13994-10.htmlinfo:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1003.1845info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:14:13Zoai:ri.conicet.gov.ar:11336/29508instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:14:13.367CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Puzzling asteroid 21 Lutetia: our knowledge prior to the Rosetta fly-by
title Puzzling asteroid 21 Lutetia: our knowledge prior to the Rosetta fly-by
spellingShingle Puzzling asteroid 21 Lutetia: our knowledge prior to the Rosetta fly-by
Belskaya, I. N.
Minor planets
Asteroids
Polarimetry
Photometry
title_short Puzzling asteroid 21 Lutetia: our knowledge prior to the Rosetta fly-by
title_full Puzzling asteroid 21 Lutetia: our knowledge prior to the Rosetta fly-by
title_fullStr Puzzling asteroid 21 Lutetia: our knowledge prior to the Rosetta fly-by
title_full_unstemmed Puzzling asteroid 21 Lutetia: our knowledge prior to the Rosetta fly-by
title_sort Puzzling asteroid 21 Lutetia: our knowledge prior to the Rosetta fly-by
dc.creator.none.fl_str_mv Belskaya, I. N.
Fornasier, S.
Krugly, Yu N.
Shevchenko, V. G.
Gaftonyuk, N. M.
Barucci, M. A.
Fulchignoni, M.
Gil Hutton, Ricardo Alfredo
author Belskaya, I. N.
author_facet Belskaya, I. N.
Fornasier, S.
Krugly, Yu N.
Shevchenko, V. G.
Gaftonyuk, N. M.
Barucci, M. A.
Fulchignoni, M.
Gil Hutton, Ricardo Alfredo
author_role author
author2 Fornasier, S.
Krugly, Yu N.
Shevchenko, V. G.
Gaftonyuk, N. M.
Barucci, M. A.
Fulchignoni, M.
Gil Hutton, Ricardo Alfredo
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Minor planets
Asteroids
Polarimetry
Photometry
topic Minor planets
Asteroids
Polarimetry
Photometry
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Aims. A wide observational campaign was carried out in 2004–2009 that aimed to complete the ground-based investigation of Lutetia prior to the Rosetta fly-by in July 2010. Methods. We obtained BVRI photometric and V-band polarimetric measurements over a wide range of phase angles, and visible and infrared spectra in the 0.4–2.4 μm range. We analyze them with previously published data to retrieve information about Lutetia's surface properties. Results. Values of lightcurve amplitudes, absolute magnitude, opposition effect, phase coefficient, and BVRI colors of Lutetia surface seen at near pole-on aspect are determined. We define more precisely parameters of polarization phase curve and show their distinct deviation from any other moderate-albedo asteroid. An indication of possible variations in both polarization and spectral data across the asteroid surface are found. To explain features found by different techniques, we propose that (i) Lutetia has a non-convex shape, probably due to a large crater, and heterogeneous surface properties probably related to surface morphology; (ii) at least part of the surface is covered by a fine-grained regolith of particle size smaller than 20 μm; (iii) the closest meteorite analogues of Lutetia's surface composition are particular types of carbonaceous chondrites, or Lutetia has specific surface composition that is not representative among studied meteorites.
Fil: Belskaya, I. N.. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia. Kharkiv Karazin National University; Ucrania
Fil: Fornasier, S.. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia. Université Paris Diderot - Paris 7; Francia
Fil: Krugly, Yu N.. Kharkiv Karazin National University; Ucrania
Fil: Shevchenko, V. G.. Kharkiv Karazin National University; Ucrania
Fil: Gaftonyuk, N. M.. Crimean Astrophysical Observatory; Ucrania
Fil: Barucci, M. A.. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia
Fil: Fulchignoni, M.. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia. Université Paris Diderot - Paris 7; Francia
Fil: Gil Hutton, Ricardo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico "El Leoncito". Universidad Nacional de Córdoba. Complejo Astronómico "El Leoncito". Universidad Nacional de la Plata. Complejo Astronómico "El Leoncito". Universidad Nacional de San Juan. Complejo Astronómico "El Leoncito"; Argentina
description Aims. A wide observational campaign was carried out in 2004–2009 that aimed to complete the ground-based investigation of Lutetia prior to the Rosetta fly-by in July 2010. Methods. We obtained BVRI photometric and V-band polarimetric measurements over a wide range of phase angles, and visible and infrared spectra in the 0.4–2.4 μm range. We analyze them with previously published data to retrieve information about Lutetia's surface properties. Results. Values of lightcurve amplitudes, absolute magnitude, opposition effect, phase coefficient, and BVRI colors of Lutetia surface seen at near pole-on aspect are determined. We define more precisely parameters of polarization phase curve and show their distinct deviation from any other moderate-albedo asteroid. An indication of possible variations in both polarization and spectral data across the asteroid surface are found. To explain features found by different techniques, we propose that (i) Lutetia has a non-convex shape, probably due to a large crater, and heterogeneous surface properties probably related to surface morphology; (ii) at least part of the surface is covered by a fine-grained regolith of particle size smaller than 20 μm; (iii) the closest meteorite analogues of Lutetia's surface composition are particular types of carbonaceous chondrites, or Lutetia has specific surface composition that is not representative among studied meteorites.
publishDate 2010
dc.date.none.fl_str_mv 2010-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/29508
Belskaya, I. N.; Fornasier, S.; Krugly, Yu N.; Shevchenko, V. G.; Gaftonyuk, N. M.; et al.; Puzzling asteroid 21 Lutetia: our knowledge prior to the Rosetta fly-by; Edp Sciences; Astronomy And Astrophysics; 515; 6-2010; 29-36; A29
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/29508
identifier_str_mv Belskaya, I. N.; Fornasier, S.; Krugly, Yu N.; Shevchenko, V. G.; Gaftonyuk, N. M.; et al.; Puzzling asteroid 21 Lutetia: our knowledge prior to the Rosetta fly-by; Edp Sciences; Astronomy And Astrophysics; 515; 6-2010; 29-36; A29
0004-6361
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201013994
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2010/07/aa13994-10/aa13994-10.html
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1003.1845
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Edp Sciences
publisher.none.fl_str_mv Edp Sciences
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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