Fundamental physics with ESPRESSO: Towards an accurate wavelength calibration for a precision test of the fine-structure constant
Observations of metal absorption systems in the spectra of distant quasars allow one to constrain a possible variation of the fine-structure constant throughout the history of the Universe. Such a test poses utmost demands on the wavelength accuracy and previous studies were limited by systematics i...
| Autores: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2021 |
| País: | España |
| Institución: | Instituto Nacional de Técnica Aeroespacial (INTA) |
| Repositorio: | DIGITAL.INTA Repositorio Digital del Instituto Nacional de Técnica Aeroespacial |
| OAI Identifier: | oai:digital.inta.es:20.500.12666/629 |
| Acceso en línea: | https://www.aanda.org/articles/aa/abs/2021/02/aa39345-20/aa39345-20.html http://hdl.handle.net/20.500.12666/629 |
| Access Level: | acceso abierto |
| Palabra clave: | Instrumentation: spectrographs Techniques: spectroscopic Cosmology: observations |
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| dc.title.none.fl_str_mv |
Fundamental physics with ESPRESSO: Towards an accurate wavelength calibration for a precision test of the fine-structure constant |
| title |
Fundamental physics with ESPRESSO: Towards an accurate wavelength calibration for a precision test of the fine-structure constant |
| spellingShingle |
Fundamental physics with ESPRESSO: Towards an accurate wavelength calibration for a precision test of the fine-structure constant Schmidt, T. M. Instrumentation: spectrographs Techniques: spectroscopic Cosmology: observations |
| title_short |
Fundamental physics with ESPRESSO: Towards an accurate wavelength calibration for a precision test of the fine-structure constant |
| title_full |
Fundamental physics with ESPRESSO: Towards an accurate wavelength calibration for a precision test of the fine-structure constant |
| title_fullStr |
Fundamental physics with ESPRESSO: Towards an accurate wavelength calibration for a precision test of the fine-structure constant |
| title_full_unstemmed |
Fundamental physics with ESPRESSO: Towards an accurate wavelength calibration for a precision test of the fine-structure constant |
| title_sort |
Fundamental physics with ESPRESSO: Towards an accurate wavelength calibration for a precision test of the fine-structure constant |
| dc.creator.none.fl_str_mv |
Schmidt, T. M. Molaro, P. Murphy, M. T. Lovis, C. Cupani, G. Cristiani, S. Pepe, Francesco Rebolo, R. Santos, Nuno C. Abreu, M. Adibekyan, V. Alibert, Y. Aliverti, M. Allart, R. Allende Prieto, C. Alves, D. Baldini, V. Broeg, C. Cabral, A. Calderone, G. Cirami, R. Coelho, J. Coretti, I. D´Odorico, V. Di Marcantonio, P. Ehrenreich, D. Figueira, P. Genoni, M. Génova Santos, R. González Hernández, J. I. Kerber, F. Londoni, M. Leite, A. C. O. Louis Lizon, J. Lo Curto, G. Manescau, A. Martins, C. J. A. P. Mégevand, D. Mehner, A. Micela, G. Modigliani, A. Monteiro, M. Monteiro, M. J. P. F. G. Mueller, E. Nunes, Nelson J. Oggioni, L. Oliveira, António Pariani, G. Pasquini, L. Redaelli, E. Riva, M. Santos, Pedro Sosnowska, D. Sousa, S. G. Sozzetti, A. Suárez Mascareño, A. Udry, S. Zapatero Osorio, M. R. Zerbi, Filippo M. |
| author |
Schmidt, T. M. |
| author_facet |
Schmidt, T. M. Molaro, P. Murphy, M. T. Lovis, C. Cupani, G. Cristiani, S. Pepe, Francesco Rebolo, R. Santos, Nuno C. Abreu, M. Adibekyan, V. Alibert, Y. Aliverti, M. Allart, R. Allende Prieto, C. Alves, D. Baldini, V. Broeg, C. Cabral, A. Calderone, G. Cirami, R. Coelho, J. Coretti, I. D´Odorico, V. Di Marcantonio, P. Ehrenreich, D. Figueira, P. Genoni, M. Génova Santos, R. González Hernández, J. I. Kerber, F. Londoni, M. Leite, A. C. O. Louis Lizon, J. Lo Curto, G. Manescau, A. Martins, C. J. A. P. Mégevand, D. Mehner, A. Micela, G. Modigliani, A. Monteiro, M. Monteiro, M. J. P. F. G. Mueller, E. Nunes, Nelson J. Oggioni, L. Oliveira, António Pariani, G. Pasquini, L. Redaelli, E. Riva, M. Santos, Pedro Sosnowska, D. Sousa, S. G. Sozzetti, A. Suárez Mascareño, A. Udry, S. Zapatero Osorio, M. R. Zerbi, Filippo M. |
| author_role |
author |
| author2 |
Molaro, P. Murphy, M. T. Lovis, C. Cupani, G. Cristiani, S. Pepe, Francesco Rebolo, R. Santos, Nuno C. Abreu, M. Adibekyan, V. Alibert, Y. Aliverti, M. Allart, R. Allende Prieto, C. Alves, D. Baldini, V. Broeg, C. Cabral, A. Calderone, G. Cirami, R. Coelho, J. Coretti, I. D´Odorico, V. Di Marcantonio, P. Ehrenreich, D. Figueira, P. Genoni, M. Génova Santos, R. González Hernández, J. I. Kerber, F. Londoni, M. Leite, A. C. O. Louis Lizon, J. Lo Curto, G. Manescau, A. Martins, C. J. A. P. Mégevand, D. Mehner, A. Micela, G. Modigliani, A. Monteiro, M. Monteiro, M. J. P. F. G. Mueller, E. Nunes, Nelson J. Oggioni, L. Oliveira, António Pariani, G. Pasquini, L. Redaelli, E. Riva, M. Santos, Pedro Sosnowska, D. Sousa, S. G. Sozzetti, A. Suárez Mascareño, A. Udry, S. Zapatero Osorio, M. R. Zerbi, Filippo M. |
| author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
| dc.contributor.none.fl_str_mv |
Schmidt, T. M. [0000-0002-4833-7273] Molaro, P. [0000-0002-0571-4163] Murphy, M. T. [0000-0002-7040-5498] Cristiani, S. [0000-0002-2115-5234] Pepe, F. A. [0000-0002-9815-773X] Rebolo, R. [0000-0003-3767-7085] Istituto Nazionale di Astrofisica (INAF) Australian Research Council (ARC) Swiss National Science Foundation (SNSF) Fundacao para a Ciencia e a Tecnologia (FCT) European Research Council (ERC) |
| dc.subject.none.fl_str_mv |
Instrumentation: spectrographs Techniques: spectroscopic Cosmology: observations |
| topic |
Instrumentation: spectrographs Techniques: spectroscopic Cosmology: observations |
| description |
Observations of metal absorption systems in the spectra of distant quasars allow one to constrain a possible variation of the fine-structure constant throughout the history of the Universe. Such a test poses utmost demands on the wavelength accuracy and previous studies were limited by systematics in the spectrograph wavelength calibration. A substantial advance in the field is therefore expected from the new ultra-stable high-resolution spectrograph ESPRESSO, which was recently installed at the VLT. In preparation of the fundamental physics related part of the ESPRESSO GTO program, we present a thorough assessment of the ESPRESSO wavelength accuracy and identify possible systematics at each of the different steps involved in the wavelength calibration process. Most importantly, we compare the default wavelength solution, which is based on the combination of Thorium-Argon arc lamp spectra and a Fabry-Pérot interferometer, to the fully independent calibration obtained from a laser frequency comb. We find wavelength-dependent discrepancies of up to 24 m s−1. This substantially exceeds the photon noise and highlights the presence of different sources of systematics, which we characterize in detail as part of this study. Nevertheless, our study demonstrates the outstanding accuracy of ESPRESSO with respect to previously used spectrographs and we show that constraints of a relative change of the fine-structure constant at the 10−6 level can be obtained with ESPRESSO without being limited by wavelength calibration systematics. |
| publishDate |
2021 |
| dc.date.none.fl_str_mv |
2021 2022 2022 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 |
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article |
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publishedVersion |
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https://www.aanda.org/articles/aa/abs/2021/02/aa39345-20/aa39345-20.html http://hdl.handle.net/20.500.12666/629 |
| url |
https://www.aanda.org/articles/aa/abs/2021/02/aa39345-20/aa39345-20.html http://hdl.handle.net/20.500.12666/629 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
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Future of upper atmospheric characterisation of exoplanets with spectroscopy info:eu-repo/grantAgreement/MINECO//RYC-2013-14875 ESPECTROSCOPIA DE ALTA RESOLUCION ORIENTADA AL ESTUDIO DE EXOTIERRAS Y LA FORMACION DE LA VIA LACTEA. EXPLOTACION CIENTIFICA DE ESPRESSO Y HORS RYC-2013-14875 info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2017-86389-P info:eu-repo/grantAgreement/EC/H2020/724427 |
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Attribution-NonCommercial-NoDerivatives 4.0 International © ESO 2021 https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
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Attribution-NonCommercial-NoDerivatives 4.0 International © ESO 2021 https://creativecommons.org/licenses/by/4.0/ |
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openAccess |
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application/pdf |
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EDP Sciences |
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EDP Sciences |
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Fundamental physics with ESPRESSO: Towards an accurate wavelength calibration for a precision test of the fine-structure constantSchmidt, T. M.Molaro, P.Murphy, M. T.Lovis, C.Cupani, G.Cristiani, S.Pepe, FrancescoRebolo, R.Santos, Nuno C.Abreu, M.Adibekyan, V.Alibert, Y.Aliverti, M.Allart, R.Allende Prieto, C.Alves, D.Baldini, V.Broeg, C.Cabral, A.Calderone, G.Cirami, R.Coelho, J.Coretti, I.D´Odorico, V.Di Marcantonio, P.Ehrenreich, D.Figueira, P.Genoni, M.Génova Santos, R.González Hernández, J. I.Kerber, F.Londoni, M.Leite, A. C. O.Louis Lizon, J.Lo Curto, G.Manescau, A.Martins, C. J. A. P.Mégevand, D.Mehner, A.Micela, G.Modigliani, A.Monteiro, M.Monteiro, M. J. P. F. G.Mueller, E.Nunes, Nelson J.Oggioni, L.Oliveira, AntónioPariani, G.Pasquini, L.Redaelli, E.Riva, M.Santos, PedroSosnowska, D.Sousa, S. G.Sozzetti, A.Suárez Mascareño, A.Udry, S.Zapatero Osorio, M. R.Zerbi, Filippo M.Instrumentation: spectrographsTechniques: spectroscopicCosmology: observationsObservations of metal absorption systems in the spectra of distant quasars allow one to constrain a possible variation of the fine-structure constant throughout the history of the Universe. Such a test poses utmost demands on the wavelength accuracy and previous studies were limited by systematics in the spectrograph wavelength calibration. A substantial advance in the field is therefore expected from the new ultra-stable high-resolution spectrograph ESPRESSO, which was recently installed at the VLT. In preparation of the fundamental physics related part of the ESPRESSO GTO program, we present a thorough assessment of the ESPRESSO wavelength accuracy and identify possible systematics at each of the different steps involved in the wavelength calibration process. Most importantly, we compare the default wavelength solution, which is based on the combination of Thorium-Argon arc lamp spectra and a Fabry-Pérot interferometer, to the fully independent calibration obtained from a laser frequency comb. We find wavelength-dependent discrepancies of up to 24 m s−1. This substantially exceeds the photon noise and highlights the presence of different sources of systematics, which we characterize in detail as part of this study. Nevertheless, our study demonstrates the outstanding accuracy of ESPRESSO with respect to previously used spectrographs and we show that constraints of a relative change of the fine-structure constant at the 10−6 level can be obtained with ESPRESSO without being limited by wavelength calibration systematics.The authors thank the anonymous referee for helpful comments. TMS would like to thank Rafael Probst and Tilo Steinmetz for their support regarding the Espresso LFC system. This research has made use of Astropy, a community-developed core Python package for Astronomy (Astropy Collaboration 2013, 2018), and Matplotlib (Hunter 2007). TMS acknowledges the support by INAF/FRONTIERA through the Progetti Premiali funding scheme of the Italian Ministry of Education, University, and Research. The INAF authors acknowledge financial support of the Italian Ministry of Education, University, and Research with PRIN 201278X4FL and the Progetti Premiali funding scheme. MTMacknowledges the support of the Australian Research Council through Future Fellowship grant FT180100194 and the Institute for Fundamental Physics of the Universe for hosting a collaborative visit in June 2019. This work has been carried out within the framework of the National Centre of Competence in Research PlanetS supported by the Swiss National Science Foundation. R. A. acknowledge the financial support of the SNSF. This work was supported by FCT -Fundacao para a Ciencia e a Tecnologia through national funds and by FEDER -Fundo Europeu de Desenvolvimento Regional through COMPETE2020 -Programa Operacional Competitividade e Internacionalizacao by these grants: UID/FIS/04434/2019; UIDB/04434/2020; UIDP/04434/2020; PTDC/FIS-AST/32113/2017 & POCI-01-0145-FEDER032113; PTDC/FIS-AST/28953/2017& POCI-01-0145-FEDER-028953; PTDC/FIS-AST/28987/2017 & POCI-01-0145-FEDER-028987. ACL is supported by an FCT fellowship (SFRH/BD/113746/2015), under the FCT Doctoral Program PhD::SPACE (PD/00040/2012). This work was support by the Spanish Ministry of Science and Innovation (MICINN) under the 2013 Ramon y Cajal program RYC-2013-14875, the 2019 Juan de la Cierva program and the AYA2017-86389P program. SGS acknowledges support from the FCT through the Investigador FCT Contract No. CEECIND/00826/2018 and POPH/FSE (EC). D. E. acknowledges support from from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (project F our A ces; Grant agreement No 724427).PeerreviewEDP SciencesSchmidt, T. M. [0000-0002-4833-7273]Molaro, P. [0000-0002-0571-4163]Murphy, M. T. [0000-0002-7040-5498]Cristiani, S. [0000-0002-2115-5234]Pepe, F. A. [0000-0002-9815-773X]Rebolo, R. [0000-0003-3767-7085]Istituto Nazionale di Astrofisica (INAF)Australian Research Council (ARC)Swiss National Science Foundation (SNSF)Fundacao para a Ciencia e a Tecnologia (FCT)European Research Council (ERC)202220222021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501application/pdfhttps://www.aanda.org/articles/aa/abs/2021/02/aa39345-20/aa39345-20.htmlhttp://hdl.handle.net/20.500.12666/629reponame:DIGITAL.INTA Repositorio Digital del Instituto Nacional de Técnica Aeroespacialinstname:Instituto Nacional de Técnica Aeroespacial (INTA)InglésFuture of upper atmospheric characterisation of exoplanets with spectroscopyinfo:eu-repo/grantAgreement/MINECO//RYC-2013-14875ESPECTROSCOPIA DE ALTA RESOLUCION ORIENTADA AL ESTUDIO DE EXOTIERRAS Y LA FORMACION DE LA VIA LACTEA. EXPLOTACION CIENTIFICA DE ESPRESSO Y HORSRYC-2013-14875info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2017-86389-Pinfo:eu-repo/grantAgreement/EC/H2020/724427Attribution-NonCommercial-NoDerivatives 4.0 International© ESO 2021https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:digital.inta.es:20.500.12666/6292026-06-23T12:46:37Z |
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