Nulling interferometry: performance comparison between space and ground-based sites for exozodiacal disc detection
Characterising the circumstellar dust around nearby main sequence stars is a necessary step in understanding the planetary formation process and is crucial for future life-finding space missions such as ESA's Darwin or NASA's Terrestrial Planet Finder (TPF). Besides paving the technologica...
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ftdatacite:10.48550/arxiv.0808.3713 2023-05-15T13:43:59+02:00 Nulling interferometry: performance comparison between space and ground-based sites for exozodiacal disc detection Defrère, D. Absil, O. Foresto, V. Coudé du Danchi, W. C. Hartog, R. den 2008 https://dx.doi.org/10.48550/arxiv.0808.3713 https://arxiv.org/abs/0808.3713 unknown arXiv https://dx.doi.org/10.1051/0004-6361:200810248 arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Astrophysics astro-ph FOS Physical sciences article-journal Article ScholarlyArticle Text 2008 ftdatacite https://doi.org/10.48550/arxiv.0808.3713 https://doi.org/10.1051/0004-6361:200810248 2022-04-01T15:26:53Z Characterising the circumstellar dust around nearby main sequence stars is a necessary step in understanding the planetary formation process and is crucial for future life-finding space missions such as ESA's Darwin or NASA's Terrestrial Planet Finder (TPF). Besides paving the technological way to Darwin/TPF, the space-based infrared interferometers Pegase and FKSI (Fourier-Kelvin Stellar Interferometer) will be valuable scientific precursors in that respect. In this paper, we investigate the performance of Pegase and FKSI for exozodiacal disc detection and compare the results with ground-based nulling interferometers. Besides their main scientific goal (characterising hot giant extrasolar planets), Pegase and FKSI are very efficient in assessing within a few minutes the level of circumstellar dust in the habitable zone around nearby main sequence stars. They are capable of detecting exozodiacal discs respectively 5 and 1 time as dense as the solar zodiacal cloud and they outperform any ground-based instrument. Unlike Pegase, FKSI can achieve this sensitivity for most targets of the Darwin/TPF catalogue thanks to an appropriate combination of baseline length and observing wavelength. The sensitivity of Pegase could, however, be significantly boosted by considering a shorter interferometric baseline length. These space-based interferometers would be complementary to Antarctica-based instruments in terms of sky coverage and would be ideal instruments for preparing future life-finding space missions. : 11 pages, accepted for publication in A&A Text Antarc* Antarctica DataCite Metadata Store (German National Library of Science and Technology) |
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Astrophysics astro-ph FOS Physical sciences |
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Astrophysics astro-ph FOS Physical sciences Defrère, D. Absil, O. Foresto, V. Coudé du Danchi, W. C. Hartog, R. den Nulling interferometry: performance comparison between space and ground-based sites for exozodiacal disc detection |
topic_facet |
Astrophysics astro-ph FOS Physical sciences |
description |
Characterising the circumstellar dust around nearby main sequence stars is a necessary step in understanding the planetary formation process and is crucial for future life-finding space missions such as ESA's Darwin or NASA's Terrestrial Planet Finder (TPF). Besides paving the technological way to Darwin/TPF, the space-based infrared interferometers Pegase and FKSI (Fourier-Kelvin Stellar Interferometer) will be valuable scientific precursors in that respect. In this paper, we investigate the performance of Pegase and FKSI for exozodiacal disc detection and compare the results with ground-based nulling interferometers. Besides their main scientific goal (characterising hot giant extrasolar planets), Pegase and FKSI are very efficient in assessing within a few minutes the level of circumstellar dust in the habitable zone around nearby main sequence stars. They are capable of detecting exozodiacal discs respectively 5 and 1 time as dense as the solar zodiacal cloud and they outperform any ground-based instrument. Unlike Pegase, FKSI can achieve this sensitivity for most targets of the Darwin/TPF catalogue thanks to an appropriate combination of baseline length and observing wavelength. The sensitivity of Pegase could, however, be significantly boosted by considering a shorter interferometric baseline length. These space-based interferometers would be complementary to Antarctica-based instruments in terms of sky coverage and would be ideal instruments for preparing future life-finding space missions. : 11 pages, accepted for publication in A&A |
format |
Text |
author |
Defrère, D. Absil, O. Foresto, V. Coudé du Danchi, W. C. Hartog, R. den |
author_facet |
Defrère, D. Absil, O. Foresto, V. Coudé du Danchi, W. C. Hartog, R. den |
author_sort |
Defrère, D. |
title |
Nulling interferometry: performance comparison between space and ground-based sites for exozodiacal disc detection |
title_short |
Nulling interferometry: performance comparison between space and ground-based sites for exozodiacal disc detection |
title_full |
Nulling interferometry: performance comparison between space and ground-based sites for exozodiacal disc detection |
title_fullStr |
Nulling interferometry: performance comparison between space and ground-based sites for exozodiacal disc detection |
title_full_unstemmed |
Nulling interferometry: performance comparison between space and ground-based sites for exozodiacal disc detection |
title_sort |
nulling interferometry: performance comparison between space and ground-based sites for exozodiacal disc detection |
publisher |
arXiv |
publishDate |
2008 |
url |
https://dx.doi.org/10.48550/arxiv.0808.3713 https://arxiv.org/abs/0808.3713 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
https://dx.doi.org/10.1051/0004-6361:200810248 |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.0808.3713 https://doi.org/10.1051/0004-6361:200810248 |
_version_ |
1766195600190078976 |