INTERPLANETARY DUST PARTICLES AS SAMPLES OF ICY ASTEROIDS
Meteorites have long been considered as reflections of the compositional diversity of main belt asteroids and consequently they have been used to decipher their origin, formation, and evolution. However, while some meteorites are known to sample the surfaces of metallic, rocky and hydrated asteroids...
| Main Authors: | , , , , , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
IOP Publishing
2015
|
| Online Access: | http://hdl.handle.net/1721.1/98365 |
| _version_ | 1811089416741978112 |
|---|---|
| author | Vernazza, P. Marsset, M. Beck, P. Birlan, M. Brunetto, R. Djouadi, Z. Dumas, C. Merouane, S. Mousis, O. Zanda, B. Binzel, Richard P DeMeo, Francesca E |
| author2 | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences |
| author_facet | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Vernazza, P. Marsset, M. Beck, P. Birlan, M. Brunetto, R. Djouadi, Z. Dumas, C. Merouane, S. Mousis, O. Zanda, B. Binzel, Richard P DeMeo, Francesca E |
| author_sort | Vernazza, P. |
| collection | MIT |
| description | Meteorites have long been considered as reflections of the compositional diversity of main belt asteroids and consequently they have been used to decipher their origin, formation, and evolution. However, while some meteorites are known to sample the surfaces of metallic, rocky and hydrated asteroids (about one-third of the mass of the belt), the low-density icy asteroids (C-, P-, and D-types), representing the rest of the main belt, appear to be unsampled in our meteorite collections. Here we provide conclusive evidence that the surface compositions of these icy bodies are compatible with those of the most common extraterrestrial materials (by mass), namely anhydrous interplanetary dust particles (IDPs). Given that these particles are quite different from known meteorites, it follows that the composition of the asteroid belt consists largely of more friable material not well represented by the cohesive meteorites in our collections. In the light of our current understanding of the early dynamical evolution of the solar system, meteorites likely sample bodies formed in the inner region of the solar system (0.5–4 AU) whereas chondritic porous IDPs sample bodies that formed in the outer region (>5 AU). |
| first_indexed | 2024-09-23T14:18:50Z |
| format | Article |
| id | mit-1721.1/98365 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T14:18:50Z |
| publishDate | 2015 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/983652024-05-15T02:10:29Z INTERPLANETARY DUST PARTICLES AS SAMPLES OF ICY ASTEROIDS Vernazza, P. Marsset, M. Beck, P. Birlan, M. Brunetto, R. Djouadi, Z. Dumas, C. Merouane, S. Mousis, O. Zanda, B. Binzel, Richard P DeMeo, Francesca E Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Binzel, Richard P. DeMeo, Francesca E. Meteorites have long been considered as reflections of the compositional diversity of main belt asteroids and consequently they have been used to decipher their origin, formation, and evolution. However, while some meteorites are known to sample the surfaces of metallic, rocky and hydrated asteroids (about one-third of the mass of the belt), the low-density icy asteroids (C-, P-, and D-types), representing the rest of the main belt, appear to be unsampled in our meteorite collections. Here we provide conclusive evidence that the surface compositions of these icy bodies are compatible with those of the most common extraterrestrial materials (by mass), namely anhydrous interplanetary dust particles (IDPs). Given that these particles are quite different from known meteorites, it follows that the composition of the asteroid belt consists largely of more friable material not well represented by the cohesive meteorites in our collections. In the light of our current understanding of the early dynamical evolution of the solar system, meteorites likely sample bodies formed in the inner region of the solar system (0.5–4 AU) whereas chondritic porous IDPs sample bodies that formed in the outer region (>5 AU). 2015-09-03T18:31:00Z 2015-09-03T18:31:00Z 2015-06 2015-03 Article http://purl.org/eprint/type/JournalArticle 1538-4357 0004-637X http://hdl.handle.net/1721.1/98365 Vernazza, P., M. Marsset, P. Beck, R. P. Binzel, M. Birlan, R. Brunetto, F. E. Demeo, et al. “INTERPLANETARY DUST PARTICLES AS SAMPLES OF ICY ASTEROIDS.” The Astrophysical Journal 806, no. 2 (June 18, 2015): 204. © 2015 The American Astronomical Society en_US http://dx.doi.org/10.1088/0004-637x/806/2/204 The Astrophysical Journal Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf IOP Publishing IOP Publishing |
| spellingShingle | Vernazza, P. Marsset, M. Beck, P. Birlan, M. Brunetto, R. Djouadi, Z. Dumas, C. Merouane, S. Mousis, O. Zanda, B. Binzel, Richard P DeMeo, Francesca E INTERPLANETARY DUST PARTICLES AS SAMPLES OF ICY ASTEROIDS |
| title | INTERPLANETARY DUST PARTICLES AS SAMPLES OF ICY ASTEROIDS |
| title_full | INTERPLANETARY DUST PARTICLES AS SAMPLES OF ICY ASTEROIDS |
| title_fullStr | INTERPLANETARY DUST PARTICLES AS SAMPLES OF ICY ASTEROIDS |
| title_full_unstemmed | INTERPLANETARY DUST PARTICLES AS SAMPLES OF ICY ASTEROIDS |
| title_short | INTERPLANETARY DUST PARTICLES AS SAMPLES OF ICY ASTEROIDS |
| title_sort | interplanetary dust particles as samples of icy asteroids |
| url | http://hdl.handle.net/1721.1/98365 |
| work_keys_str_mv | AT vernazzap interplanetarydustparticlesassamplesoficyasteroids AT marssetm interplanetarydustparticlesassamplesoficyasteroids AT beckp interplanetarydustparticlesassamplesoficyasteroids AT birlanm interplanetarydustparticlesassamplesoficyasteroids AT brunettor interplanetarydustparticlesassamplesoficyasteroids AT djouadiz interplanetarydustparticlesassamplesoficyasteroids AT dumasc interplanetarydustparticlesassamplesoficyasteroids AT merouanes interplanetarydustparticlesassamplesoficyasteroids AT mousiso interplanetarydustparticlesassamplesoficyasteroids AT zandab interplanetarydustparticlesassamplesoficyasteroids AT binzelrichardp interplanetarydustparticlesassamplesoficyasteroids AT demeofrancescae interplanetarydustparticlesassamplesoficyasteroids |