NAOC Open IR
Measuring and characterizing the line profile of HARPS with a laser frequency comb
Zhao, F.1,2; Lo Curto, G.2; Pasquini, L.2; Gonzalez Hernandez, J., I4,5; De Medeiros, J. R.6; Canto Martins, B. L.6; Leao, I. C.6; Rebolo, R.4,5,7; Suarez Mascareno, A.4,5; Esposito, M.4,8; Manescau, A.2; Steinmetz, T.3,9; Udem, T.9; Probst, R.3; Holzwarth, R.3,9; Zhao, G.1
2020-12-22
Source PublicationASTRONOMY & ASTROPHYSICS
ISSN0004-6361
Volume645Pages:8
AbstractAims. We study the 2D spectral line profile of the High Accuracy Radial Velocity Planet Searcher (HARPS), measuring its variation with position across the detector and with changing line intensity. The characterization of the line profile and its variations are important for achieving the precision of the wavelength scales of 10(-10) or 3.0 cm s(-1) necessary to detect Earth-twins in the habitable zone around solar-like stars.Methods. We used a laser frequency comb (LFC) with unresolved and unblended lines to probe the instrument line profile. We injected the LFC light - attenuated by various neutral density filters - into both the object and the reference fibres of HARPS, and we studied the variations of the line profiles with the line intensities. We applied moment analysis to measure the line positions, widths, and skewness as well as to characterize the line profile distortions induced by the spectrograph and detectors. Based on this, we established a model to correct for point spread function distortions by tracking the beam profiles in both fibres.Results. We demonstrate that the line profile varies with the position on the detector and as a function of line intensities. This is consistent with a charge transfer inefficiency effect on the HARPS detector. The estimate of the line position depends critically on the line profile, and therefore a change in the line amplitude effectively changes the measured position of the lines, affecting the stability of the wavelength scale of the instrument. We deduce and apply the correcting functions to re-calibrate and mitigate this effect, reducing it to a level consistent with photon noise.
Keywordline: profiles instrumentation: spectrographs methods: data analysis techniques: radial velocities methods: statistical techniques: spectroscopic
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; CNPq ; CNPq ; FAPERN ; FAPERN ; INCT INEspaco/CNPq/MCT ; INCT INEspaco/CNPq/MCT ; CNPq Brazilian agency ; CNPq Brazilian agency ; Coordenacao de Aperfeicoament de Pessoal de Nivel Superior - Brasil (CAPES) ; Coordenacao de Aperfeicoament de Pessoal de Nivel Superior - Brasil (CAPES) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish ministry project MINECO ; Spanish ministry project MINECO ; ESO-NAOC ; ESO-NAOC ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; CNPq ; CNPq ; FAPERN ; FAPERN ; INCT INEspaco/CNPq/MCT ; INCT INEspaco/CNPq/MCT ; CNPq Brazilian agency ; CNPq Brazilian agency ; Coordenacao de Aperfeicoament de Pessoal de Nivel Superior - Brasil (CAPES) ; Coordenacao de Aperfeicoament de Pessoal de Nivel Superior - Brasil (CAPES) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish ministry project MINECO ; Spanish ministry project MINECO ; ESO-NAOC ; ESO-NAOC ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; CNPq ; CNPq ; FAPERN ; FAPERN ; INCT INEspaco/CNPq/MCT ; INCT INEspaco/CNPq/MCT ; CNPq Brazilian agency ; CNPq Brazilian agency ; Coordenacao de Aperfeicoament de Pessoal de Nivel Superior - Brasil (CAPES) ; Coordenacao de Aperfeicoament de Pessoal de Nivel Superior - Brasil (CAPES) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish ministry project MINECO ; Spanish ministry project MINECO ; ESO-NAOC ; ESO-NAOC ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; CNPq ; CNPq ; FAPERN ; FAPERN ; INCT INEspaco/CNPq/MCT ; INCT INEspaco/CNPq/MCT ; CNPq Brazilian agency ; CNPq Brazilian agency ; Coordenacao de Aperfeicoament de Pessoal de Nivel Superior - Brasil (CAPES) ; Coordenacao de Aperfeicoament de Pessoal de Nivel Superior - Brasil (CAPES) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish ministry project MINECO ; Spanish ministry project MINECO ; ESO-NAOC ; ESO-NAOC
DOI10.1051/0004-6361/201937370
WOS KeywordCHARGE-TRANSFER INEFFICIENCY ; PRECISION ; SPECTROGRAPH ; CALIBRATION
Language英语
Funding ProjectNational Key R&D Program of China[2019YFA0405102] ; National Key R&D Program of China[2019YFA0405502] ; National Natural Science Foundation of China (NSFC)[11703052] ; National Natural Science Foundation of China (NSFC)[11988101] ; National Natural Science Foundation of China (NSFC)[11890694] ; National Natural Science Foundation of China (NSFC)[12073044] ; CNPq ; FAPERN ; INCT INEspaco/CNPq/MCT ; CNPq Brazilian agency[207393/2014-1] ; Coordenacao de Aperfeicoament de Pessoal de Nivel Superior - Brasil (CAPES)[001] ; Spanish Ministry of Economy and Competitiveness (MINECO)[MINECO RYC2013-14875] ; Spanish ministry project MINECO[AYA2014-56359-P] ; ESO-NAOC
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; CNPq ; CNPq ; FAPERN ; FAPERN ; INCT INEspaco/CNPq/MCT ; INCT INEspaco/CNPq/MCT ; CNPq Brazilian agency ; CNPq Brazilian agency ; Coordenacao de Aperfeicoament de Pessoal de Nivel Superior - Brasil (CAPES) ; Coordenacao de Aperfeicoament de Pessoal de Nivel Superior - Brasil (CAPES) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish ministry project MINECO ; Spanish ministry project MINECO ; ESO-NAOC ; ESO-NAOC ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; CNPq ; CNPq ; FAPERN ; FAPERN ; INCT INEspaco/CNPq/MCT ; INCT INEspaco/CNPq/MCT ; CNPq Brazilian agency ; CNPq Brazilian agency ; Coordenacao de Aperfeicoament de Pessoal de Nivel Superior - Brasil (CAPES) ; Coordenacao de Aperfeicoament de Pessoal de Nivel Superior - Brasil (CAPES) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish ministry project MINECO ; Spanish ministry project MINECO ; ESO-NAOC ; ESO-NAOC ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; CNPq ; CNPq ; FAPERN ; FAPERN ; INCT INEspaco/CNPq/MCT ; INCT INEspaco/CNPq/MCT ; CNPq Brazilian agency ; CNPq Brazilian agency ; Coordenacao de Aperfeicoament de Pessoal de Nivel Superior - Brasil (CAPES) ; Coordenacao de Aperfeicoament de Pessoal de Nivel Superior - Brasil (CAPES) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish ministry project MINECO ; Spanish ministry project MINECO ; ESO-NAOC ; ESO-NAOC ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; CNPq ; CNPq ; FAPERN ; FAPERN ; INCT INEspaco/CNPq/MCT ; INCT INEspaco/CNPq/MCT ; CNPq Brazilian agency ; CNPq Brazilian agency ; Coordenacao de Aperfeicoament de Pessoal de Nivel Superior - Brasil (CAPES) ; Coordenacao de Aperfeicoament de Pessoal de Nivel Superior - Brasil (CAPES) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish ministry project MINECO ; Spanish ministry project MINECO ; ESO-NAOC ; ESO-NAOC
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000603267100005
PublisherEDP SCIENCES S A
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/79889
Collection中国科学院国家天文台
Corresponding AuthorZhao, F.
Affiliation1.Chinese Acad Sci, Natl Astron Observ, CAS Key Lab Opt Astron, Beijing 100101, Peoples R China
2.European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany
3.Menlo Syst GmbH, Klopferspitz 19a, D-82152 Martinsried, Germany
4.Inst Astrofis Canarias IAC, Tenerife 38205, Spain
5.Univ La Laguna, Dept Astrofis, Tenerife 38206, Spain
6.Univ Fed Rio Grande do Norte, Dept Fis, Campus Univ, BR-59078970 Natal, RN, Brazil
7.CSIC, Madrid, Spain
8.INAF Osservatorio Astron Capodimonte, Salita Moiariello 16, I-80131 Naples, Italy
9.Max Planck Inst Quantum Opt, Hans Kopfermann Str 1, D-85748 Garching, Germany
Recommended Citation
GB/T 7714
Zhao, F.,Lo Curto, G.,Pasquini, L.,et al. Measuring and characterizing the line profile of HARPS with a laser frequency comb[J]. ASTRONOMY & ASTROPHYSICS,2020,645:8.
APA Zhao, F..,Lo Curto, G..,Pasquini, L..,Gonzalez Hernandez, J., I.,De Medeiros, J. R..,...&Zhao, G..(2020).Measuring and characterizing the line profile of HARPS with a laser frequency comb.ASTRONOMY & ASTROPHYSICS,645,8.
MLA Zhao, F.,et al."Measuring and characterizing the line profile of HARPS with a laser frequency comb".ASTRONOMY & ASTROPHYSICS 645(2020):8.
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