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dc.contributor.author
Diaz, Carlos Gonzalo
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dc.contributor.author
Gil Hutton, Ricardo Alfredo
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dc.date.available
2023-10-11T12:08:42Z
dc.date.issued
2008-08
dc.identifier.citation
Diaz, Carlos Gonzalo; Gil Hutton, Ricardo Alfredo; Collisional activation of asteroids in cometary orbits; EDP Sciences; Astronomy and Astrophysics; 487; 1; 8-2008; 363-367
dc.identifier.issn
0004-6361
dc.identifier.uri
http://hdl.handle.net/11336/214786
dc.description.abstract
Aims. We study the time an asteroid in a cometary orbit must wait to receive a collision producing a crater depth enough to expose subsurface volatiles, aiming to analyze the possibility of collisional reactivation of these objects if they are dormant comets.Methods. We perform a numerical integration of the asteroids in cometary orbits and a population of projectiles to find the mean intrinsic collision probabilities and mean impact velocities of the targets. The projectile population was obtained as a sample with the same distribution of orbital elements as observed for main belt asteroids, and we also take into account that its size distribution changes for different size ranges. Only 206 asteroids in cometary orbits, that are not members of other asteroid groups, with a Tisserand parameter 2 2.9 and perihelion distance > 1.3 AU were considered.Results. A large fraction of the objects in the sample receive at least 1 collision energetic enough to break the comet crust and allow a dormant comet to reach an active state in a period shorter than a Jupiter Family Comet dynamical lifetime. A large fraction of the objects in the sample with 8-9 km receive several collisions and could be active for more than 3 10 yr. We found an excess in the number of dormant comet candidates from the expected values which is indicative of the presence in the ACOs population of objects that are not comets in a dormant state. These objects could be asteroids with < 3 that reach their present orbits by some dynamical mechanism that perturbs the original asteroidal orbit changing its Tisserand invariant.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
EDP Sciences
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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
COMETS: GENERAL
dc.subject
MINOR PLANETS, ASTEROIDS
dc.subject
SOLAR SYSTEM: GENERAL
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
Collisional activation of asteroids in cometary orbits
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-07-07T20:28:54Z
dc.journal.volume
487
dc.journal.number
1
dc.journal.pagination
363-367
dc.journal.pais
Francia
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dc.journal.ciudad
Paris
dc.description.fil
Fil: Diaz, Carlos Gonzalo. Universidad Nacional de San Juan; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina
dc.description.fil
Fil: Gil Hutton, Ricardo Alfredo. Universidad Nacional de San Juan; Argentina. 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
dc.journal.title
Astronomy and Astrophysics
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2008A%2526A...487..363DFUL
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/0004-6361:20079236
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