Direct imaging of exoEarths embedded in clumpy debris disks
The inner solar system, where the terrestrial planets formed and evolve, is populated by small grains of dust produced by collisions of asteroids and outgassing comets. At visible and infrared wavelengths, this dust cloud is in fact the most luminous component in the solar system after the Sun itsel...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | en_US |
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SPIE - The International Society for Optical Engineering
2017
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| Online Access: | http://hdl.handle.net/1721.1/110928 |
| _version_ | 1824457972964655104 |
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| author | Defrere, D. Stark, C. Cahoy, K. Beerer, I. |
| author2 | Space Telecommunications Astronomy and Radiation (STAR) Lab |
| author_facet | Space Telecommunications Astronomy and Radiation (STAR) Lab Defrere, D. Stark, C. Cahoy, K. Beerer, I. |
| author_sort | Defrere, D. |
| collection | MIT |
| description | The inner solar system, where the terrestrial planets formed and evolve, is populated by small grains of dust produced by collisions of asteroids and outgassing comets. At visible and infrared wavelengths, this dust cloud is in fact the most luminous component in the solar system after the Sun itself and the Earth may appear similar to a clump of zodiacal dust to an external observer. Hence, the presence of large amounts of dust in the habitable zone around nearby main-sequence stars is considered as a major hurdle toward the direct imaging of exoEarths with future dedicated space-based telescopes. In that context, we address in this paper the detectability of exoEarths embedded in structured debris disks with future space-based visible coronagraphs and mid-infrared interferometers. Using a collisional grooming algorithm, we produce models of dust clouds that simultaneously and self-consistently handle dust grain dynamics, including resonant interactions with planets, and grain-grain collisions. Considering various viewing geometries, we also derive limiting dust densities that can be tolerated around nearby main-sequence stars in order to ensure the characterization of exoEarths with future direct imaging missions. |
| first_indexed | 2024-09-23T10:01:36Z |
| format | Article |
| id | mit-1721.1/110928 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2025-02-19T04:18:30Z |
| publishDate | 2017 |
| publisher | SPIE - The International Society for Optical Engineering |
| record_format | dspace |
| spelling | mit-1721.1/1109282025-02-11T20:02:40Z Direct imaging of exoEarths embedded in clumpy debris disks Defrere, D. Stark, C. Cahoy, K. Beerer, I. Space Telecommunications Astronomy and Radiation (STAR) Lab Massachusetts Institute of Technology. Department of Aeronautics and Astronautics astronomical telescopes circumstellar matter coronagraphs cosmic dust extrasolar planets infrared astronomy The inner solar system, where the terrestrial planets formed and evolve, is populated by small grains of dust produced by collisions of asteroids and outgassing comets. At visible and infrared wavelengths, this dust cloud is in fact the most luminous component in the solar system after the Sun itself and the Earth may appear similar to a clump of zodiacal dust to an external observer. Hence, the presence of large amounts of dust in the habitable zone around nearby main-sequence stars is considered as a major hurdle toward the direct imaging of exoEarths with future dedicated space-based telescopes. In that context, we address in this paper the detectability of exoEarths embedded in structured debris disks with future space-based visible coronagraphs and mid-infrared interferometers. Using a collisional grooming algorithm, we produce models of dust clouds that simultaneously and self-consistently handle dust grain dynamics, including resonant interactions with planets, and grain-grain collisions. Considering various viewing geometries, we also derive limiting dust densities that can be tolerated around nearby main-sequence stars in order to ensure the characterization of exoEarths with future direct imaging missions. 2017-08-05T15:25:06Z 2017-08-05T15:25:06Z 2012 Article 0277-786X http://hdl.handle.net/1721.1/110928 Defrere, D., Stark, C., Cahoy, K., & Beerer, I. (2012). Direct imaging of exoEarths embedded in clumpy debris disks. Proceedings Of The SPIE - The International Society For Optical Engineering, 8442(8 pp.). doi:10.1117/12.926324 en_US application/pdf SPIE - The International Society for Optical Engineering |
| spellingShingle | astronomical telescopes circumstellar matter coronagraphs cosmic dust extrasolar planets infrared astronomy Defrere, D. Stark, C. Cahoy, K. Beerer, I. Direct imaging of exoEarths embedded in clumpy debris disks |
| title | Direct imaging of exoEarths embedded in clumpy debris disks |
| title_full | Direct imaging of exoEarths embedded in clumpy debris disks |
| title_fullStr | Direct imaging of exoEarths embedded in clumpy debris disks |
| title_full_unstemmed | Direct imaging of exoEarths embedded in clumpy debris disks |
| title_short | Direct imaging of exoEarths embedded in clumpy debris disks |
| title_sort | direct imaging of exoearths embedded in clumpy debris disks |
| topic | astronomical telescopes circumstellar matter coronagraphs cosmic dust extrasolar planets infrared astronomy |
| url | http://hdl.handle.net/1721.1/110928 |
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