NAOC Open IR
Portable adaptive optics for exoplanet imaging
Zhu, Yong-Tian1,2,3; Dou, Jiang-Pei1,2; Zhang, Xi1,2; Zhao, Gang1,2; Guo, Jing1,2; Infante, Leopoldo4,5,6
2021-05-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume21Issue:4Pages:9
AbstractThe portable adaptive optics (PAO) device is a low-cost and compact system, designed for 4-meter class telescopes that have no adaptive optics (AO) system, because of the physical space limitation at the Nasmyth or Cassegrain focus and the historically high cost of conventional AO. The initial scientific observations of the PAO are focused on the direct imaging of exoplanets and sub-stellar companions. This paper discusses the concept of PAO and the associated high-contrast imaging performance in our recent observational runs. PAO deliver a Strehl ratio better than 60% in H band under median seeing conditions of 1 ''. Combined with our dedicated image rotation and subtraction (IRS) technique and the optimized IRS (O-IRS) algorithm, the averaged contrast ratio for a 5 <= V-mag <= 9 primary star is 1.3 x 10(-5) and 3.3 x 10(-6) at angular distance of 0.36 '' with exposure time of 7 minutes and 2 hours, respectively. PAO has successfully revealed the known exoplanet of kappa And b in our recent observation with the 3.5-meter ARC telescope at Apache Point Observatory. We have performed the associated astrometry and photometry analysis of the recovered kappa And b planet, which gives a projected separation of 0.984 '' +/- 0.05 '', a position angle of 51.1 degrees +/- 0.5 degrees and a mass of 10.15(-1.255)(+2.19) M-Jup. These results demonstrate that PAO can be used for direct imaging of exoplanets with medium-sized telescopes.
Keywordstars: imaging instrumentation: adaptive optics instrumentation: high angular resolution methods: observational techniques: image processing
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
DOI10.1088/1674-4527/21/4/82
WOS KeywordALGORITHM ; SUPPRESSION ; SUBTRACTION ; CORONAGRAPH ; DISCOVERY
Language英语
Funding ProjectNational Natural Science Foundation of China[11827804] ; National Natural Science Foundation of China[U2031210]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000657381900001
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/77056
Collection中国科学院国家天文台
Corresponding AuthorDou, Jiang-Pei
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Nanjing Inst Astron Opt & Technol, Nanjing 210042, Peoples R China
2.Chinese Acad Sci, Nanjing Inst Astron Opt & Technol, Key Lab Astron Opt & Technol, Nanjing 210042, Peoples R China
3.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
4.Observ Carnegie Inst Washington, Las Campanas Observ, Colina El Pino S-N Casilla 601, La Serena, Chile
5.Pontificia Univ Catolica Chile, Inst Astrophys, Av Vic Mackenna 4860, Santiago, Chile
6.Univ Diego Portales, Nucleo Astron, Fac Ingn & Ciencias, Manuel Rodriguez Sur 415, Santiago, Chile
Recommended Citation
GB/T 7714
Zhu, Yong-Tian,Dou, Jiang-Pei,Zhang, Xi,et al. Portable adaptive optics for exoplanet imaging[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2021,21(4):9.
APA Zhu, Yong-Tian,Dou, Jiang-Pei,Zhang, Xi,Zhao, Gang,Guo, Jing,&Infante, Leopoldo.(2021).Portable adaptive optics for exoplanet imaging.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,21(4),9.
MLA Zhu, Yong-Tian,et al."Portable adaptive optics for exoplanet imaging".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.4(2021):9.
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