The Dust Environment of Main-Belt Comet P/2010 R2 (La Sagra)
peer reviewed We present a model of the dust environment of Main-Belt Comet P/2010 R2 (La Sagra) from images acquired during the period 2010 October-2011 January. The tails are best simulated by anisotropic ejection models, with emission concentrated near the nucleus south pole, the spin axis having...
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Online Access: | https://orbi.uliege.be/handle/2268/231203 https://orbi.uliege.be/bitstream/2268/231203/1/2011_Moreno.pdf https://doi.org/10.1088/2041-8205/738/1/L16 |
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ftorbi:oai:orbi.ulg.ac.be:2268/231203 2024-04-21T08:11:58+00:00 The Dust Environment of Main-Belt Comet P/2010 R2 (La Sagra) Moreno, F. Lara, L. M. Licandro, J. Ortiz, J. L. de León, J. Alí-Lagoa, V. Agis-Gonzalez, Beatriz Molina, A. 2011-09-01 https://orbi.uliege.be/handle/2268/231203 https://orbi.uliege.be/bitstream/2268/231203/1/2011_Moreno.pdf https://doi.org/10.1088/2041-8205/738/1/L16 en eng Institute of Physics Publishing http://adsabs.harvard.edu/abs/2011ApJ.738L.16M urn:issn:2041-8205 urn:issn:2041-8213 https://orbi.uliege.be/handle/2268/231203 info:hdl:2268/231203 https://orbi.uliege.be/bitstream/2268/231203/1/2011_Moreno.pdf doi:10.1088/2041-8205/738/1/L16 scopus-id:2-s2.0-80052308509 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Astrophysical Journal. Letters, 738 (2011-09-01) comets: individual: P/2010 R2 (La Sagra) methods: numerical minor planets asteroids: general Physical chemical mathematical & earth Sciences Space science astronomy & astrophysics Physique chimie mathématiques & sciences de la terre Aérospatiale astronomie & astrophysique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2011 ftorbi https://doi.org/10.1088/2041-8205/738/1/L16 2024-03-27T14:53:49Z peer reviewed We present a model of the dust environment of Main-Belt Comet P/2010 R2 (La Sagra) from images acquired during the period 2010 October-2011 January. The tails are best simulated by anisotropic ejection models, with emission concentrated near the nucleus south pole, the spin axis having an obliquity near 90°, indicative of a possible seasonally driven behavior. The dust mass loss rate increases rapidly shortly before perihelion, reaching a maximum value of ~4 kg s[SUP]-1[/SUP], and maintaining a sustained, cometary-like, activity of about 3-4 kg s[SUP]-1[/SUP] up to at least 200 days after perihelion, the date of the latest observation. The size distribution function is characterized by particles in the 5 × 10[SUP]-4[/SUP] cm to 1 cm radius range, assuming a time-constant power-law distribution with an index of -3.5. The ejection velocities are compatible with water-ice sublimation activity at the heliocentric distance of 2.7 AU, with values of 10-20 cm s[SUP]-1[/SUP] for particle radius of 1 cm, and inverse square root dependence on particle size, typical of hydrodynamical gas drag. Article in Journal/Newspaper South pole University of Liège: ORBi (Open Repository and Bibliography) The Astrophysical Journal 738 1 L16 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
comets: individual: P/2010 R2 (La Sagra) methods: numerical minor planets asteroids: general Physical chemical mathematical & earth Sciences Space science astronomy & astrophysics Physique chimie mathématiques & sciences de la terre Aérospatiale astronomie & astrophysique |
spellingShingle |
comets: individual: P/2010 R2 (La Sagra) methods: numerical minor planets asteroids: general Physical chemical mathematical & earth Sciences Space science astronomy & astrophysics Physique chimie mathématiques & sciences de la terre Aérospatiale astronomie & astrophysique Moreno, F. Lara, L. M. Licandro, J. Ortiz, J. L. de León, J. Alí-Lagoa, V. Agis-Gonzalez, Beatriz Molina, A. The Dust Environment of Main-Belt Comet P/2010 R2 (La Sagra) |
topic_facet |
comets: individual: P/2010 R2 (La Sagra) methods: numerical minor planets asteroids: general Physical chemical mathematical & earth Sciences Space science astronomy & astrophysics Physique chimie mathématiques & sciences de la terre Aérospatiale astronomie & astrophysique |
description |
peer reviewed We present a model of the dust environment of Main-Belt Comet P/2010 R2 (La Sagra) from images acquired during the period 2010 October-2011 January. The tails are best simulated by anisotropic ejection models, with emission concentrated near the nucleus south pole, the spin axis having an obliquity near 90°, indicative of a possible seasonally driven behavior. The dust mass loss rate increases rapidly shortly before perihelion, reaching a maximum value of ~4 kg s[SUP]-1[/SUP], and maintaining a sustained, cometary-like, activity of about 3-4 kg s[SUP]-1[/SUP] up to at least 200 days after perihelion, the date of the latest observation. The size distribution function is characterized by particles in the 5 × 10[SUP]-4[/SUP] cm to 1 cm radius range, assuming a time-constant power-law distribution with an index of -3.5. The ejection velocities are compatible with water-ice sublimation activity at the heliocentric distance of 2.7 AU, with values of 10-20 cm s[SUP]-1[/SUP] for particle radius of 1 cm, and inverse square root dependence on particle size, typical of hydrodynamical gas drag. |
format |
Article in Journal/Newspaper |
author |
Moreno, F. Lara, L. M. Licandro, J. Ortiz, J. L. de León, J. Alí-Lagoa, V. Agis-Gonzalez, Beatriz Molina, A. |
author_facet |
Moreno, F. Lara, L. M. Licandro, J. Ortiz, J. L. de León, J. Alí-Lagoa, V. Agis-Gonzalez, Beatriz Molina, A. |
author_sort |
Moreno, F. |
title |
The Dust Environment of Main-Belt Comet P/2010 R2 (La Sagra) |
title_short |
The Dust Environment of Main-Belt Comet P/2010 R2 (La Sagra) |
title_full |
The Dust Environment of Main-Belt Comet P/2010 R2 (La Sagra) |
title_fullStr |
The Dust Environment of Main-Belt Comet P/2010 R2 (La Sagra) |
title_full_unstemmed |
The Dust Environment of Main-Belt Comet P/2010 R2 (La Sagra) |
title_sort |
dust environment of main-belt comet p/2010 r2 (la sagra) |
publisher |
Institute of Physics Publishing |
publishDate |
2011 |
url |
https://orbi.uliege.be/handle/2268/231203 https://orbi.uliege.be/bitstream/2268/231203/1/2011_Moreno.pdf https://doi.org/10.1088/2041-8205/738/1/L16 |
genre |
South pole |
genre_facet |
South pole |
op_source |
Astrophysical Journal. Letters, 738 (2011-09-01) |
op_relation |
http://adsabs.harvard.edu/abs/2011ApJ.738L.16M urn:issn:2041-8205 urn:issn:2041-8213 https://orbi.uliege.be/handle/2268/231203 info:hdl:2268/231203 https://orbi.uliege.be/bitstream/2268/231203/1/2011_Moreno.pdf doi:10.1088/2041-8205/738/1/L16 scopus-id:2-s2.0-80052308509 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1088/2041-8205/738/1/L16 |
container_title |
The Astrophysical Journal |
container_volume |
738 |
container_issue |
1 |
container_start_page |
L16 |
_version_ |
1796931857633247232 |