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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/29508
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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 Técnicas2025-09-29T09:45:20Zoai: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:34982025-09-29 09:45:20.899CONICET 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 |
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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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1844613424019931136 |
score |
13.070432 |