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Global optimization-based reference star differential imaging for high-contrast exoplanet imaging survey
Ren, Deqing1; Chen, Yili2,3,4
2021-04-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume502Issue:2Pages:2158-2171
AbstractWe propose a data reduction approach called global optimization-based reference star differential imaging (G-RDI), which can be used for exoplanet imaging survey, where large numbers of target stars from the same young stellar association are imaged and where no field rotation is needed. One of the unique features of our G-RDI is that we select reference stars from other scientific target stars in the same stellar association to optimize for high-contrast imaging with a target star, which maximizes the observational efficiency and also delivers good performance to remove the speckle noise so that high contrast is achievable even at a small inner working angle (IWA) to the host star of being imaged. We proposed the G-RDI that is optimized for high-contrast exoplanet imaging at a small IWA and to provide a contrast that is significantly better than the current reference star differential imaging (RDI) method. In addition, we also propose the use of multiple reference stars and found that our G-RDI can further deliver better performance in that case. The result was compared with other exoplanet data reduction techniques, including the traditional RDI, and it indicated that our G-RDI with two reference stars can significantly improve the contrast performance at a small IWA with a high observational efficiency - two critical features that current data reduction techniques cannot offer. This approach could be used with both equatorial and alt-azimuth mount telescopes, and provides a new option for future exoplanet imaging surveys with high observational efficiency at a small IWA.
Keywordinstrumentation: adaptive optics methods: data analysis techniques: image processing
Funding OrganizationNational Science Foundation (NSF) ; National Science Foundation (NSF) ; Mt. Cuba Astronomical Foundation ; Mt. Cuba Astronomical Foundation ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; Mt. Cuba Astronomical Foundation ; Mt. Cuba Astronomical Foundation ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; Mt. Cuba Astronomical Foundation ; Mt. Cuba Astronomical Foundation ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; Mt. Cuba Astronomical Foundation ; Mt. Cuba Astronomical Foundation
DOI10.1093/mnras/stab022
WOS KeywordNIRC2 VORTEX CORONAGRAPH ; HD 95086 B ; SPECKLE NOISE ; ADAPTIVE OPTICS ; CIRCUMSTELLAR DISKS ; DYNAMIC-RANGE ; DEBRIS DISKS ; PLANET ; TELESCOPE ; GEMINI
Language英语
Funding ProjectNational Science Foundation (NSF)[AST-1607921] ; National Science Foundation (NSF)[AST-1906166] ; Mt. Cuba Astronomical Foundation
Funding OrganizationNational Science Foundation (NSF) ; National Science Foundation (NSF) ; Mt. Cuba Astronomical Foundation ; Mt. Cuba Astronomical Foundation ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; Mt. Cuba Astronomical Foundation ; Mt. Cuba Astronomical Foundation ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; Mt. Cuba Astronomical Foundation ; Mt. Cuba Astronomical Foundation ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; Mt. Cuba Astronomical Foundation ; Mt. Cuba Astronomical Foundation
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000648997200045
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/77595
Collection中国科学院国家天文台
Corresponding AuthorRen, Deqing; Chen, Yili
Affiliation1.Calif State Univ Northridge, Northridge, CA 91330 USA
2.Chinese Acad Sci, Natl Astron Observ, Nanjing Inst Astron Opt & Technol, Nanjing 210042, Peoples R China
3.Nanjing Inst Astron Opt & Technol, CAS Key Lab Astron Opt & Technol, Nanjing 210042, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Ren, Deqing,Chen, Yili. Global optimization-based reference star differential imaging for high-contrast exoplanet imaging survey[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,502(2):2158-2171.
APA Ren, Deqing,&Chen, Yili.(2021).Global optimization-based reference star differential imaging for high-contrast exoplanet imaging survey.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,502(2),2158-2171.
MLA Ren, Deqing,et al."Global optimization-based reference star differential imaging for high-contrast exoplanet imaging survey".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 502.2(2021):2158-2171.
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