Limb-darkening coefficients for four-term and power-2 laws for the JWST mission adopting spherical PHOENIX models at high resolution: NIRCam, NIRISS, and NIRSpec passbands

Aims. Modeling observations of transiting exoplanets or close binary systems by comparing the observations with theoretical light curves requires precise knowledge of the distribution of specific intensities across the stellar disk. We aim to facilitate this type of research by providing extensive t...

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Detalles Bibliográficos
Autores: Claret, A., Hauschildt, P. H., Torres, G.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/397689
Acceso en línea:http://hdl.handle.net/10261/397689
Access Level:acceso abierto
Palabra clave:Stars: atmospheres
Binaries: eclipsing
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dc.title.none.fl_str_mv Limb-darkening coefficients for four-term and power-2 laws for the JWST mission adopting spherical PHOENIX models at high resolution: NIRCam, NIRISS, and NIRSpec passbands
title Limb-darkening coefficients for four-term and power-2 laws for the JWST mission adopting spherical PHOENIX models at high resolution: NIRCam, NIRISS, and NIRSpec passbands
spellingShingle Limb-darkening coefficients for four-term and power-2 laws for the JWST mission adopting spherical PHOENIX models at high resolution: NIRCam, NIRISS, and NIRSpec passbands
Claret, A.
Stars: atmospheres
Binaries: eclipsing
title_short Limb-darkening coefficients for four-term and power-2 laws for the JWST mission adopting spherical PHOENIX models at high resolution: NIRCam, NIRISS, and NIRSpec passbands
title_full Limb-darkening coefficients for four-term and power-2 laws for the JWST mission adopting spherical PHOENIX models at high resolution: NIRCam, NIRISS, and NIRSpec passbands
title_fullStr Limb-darkening coefficients for four-term and power-2 laws for the JWST mission adopting spherical PHOENIX models at high resolution: NIRCam, NIRISS, and NIRSpec passbands
title_full_unstemmed Limb-darkening coefficients for four-term and power-2 laws for the JWST mission adopting spherical PHOENIX models at high resolution: NIRCam, NIRISS, and NIRSpec passbands
title_sort Limb-darkening coefficients for four-term and power-2 laws for the JWST mission adopting spherical PHOENIX models at high resolution: NIRCam, NIRISS, and NIRSpec passbands
dc.creator.none.fl_str_mv Claret, A.
Hauschildt, P. H.
Torres, G.
author Claret, A.
author_facet Claret, A.
Hauschildt, P. H.
Torres, G.
author_role author
author2 Hauschildt, P. H.
Torres, G.
author2_role author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Agencia Estatal de Investigación (España)
Department of Energy (US)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Stars: atmospheres
Binaries: eclipsing
topic Stars: atmospheres
Binaries: eclipsing
description Aims. Modeling observations of transiting exoplanets or close binary systems by comparing the observations with theoretical light curves requires precise knowledge of the distribution of specific intensities across the stellar disk. We aim to facilitate this type of research by providing extensive tabulations of limb-darkening coefficients for 11 frequently used near- and mid-infrared passbands on the NIRCam, NIRISS, and NIRSpec instruments installed on board the James Webb Space Telescope.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/397689
url http://hdl.handle.net/10261/397689
dc.language.none.fl_str_mv Inglés
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info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-107061GB-C64
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/CEX2021-001131-S
http://dx.doi.org/10.1051/0004-6361/202554770
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dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
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spelling Limb-darkening coefficients for four-term and power-2 laws for the JWST mission adopting spherical PHOENIX models at high resolution: NIRCam, NIRISS, and NIRSpec passbandsClaret, A.Hauschildt, P. H.Torres, G.Stars: atmospheresBinaries: eclipsingAims. Modeling observations of transiting exoplanets or close binary systems by comparing the observations with theoretical light curves requires precise knowledge of the distribution of specific intensities across the stellar disk. We aim to facilitate this type of research by providing extensive tabulations of limb-darkening coefficients for 11 frequently used near- and mid-infrared passbands on the NIRCam, NIRISS, and NIRSpec instruments installed on board the James Webb Space Telescope.Methods. The calculation of the limb-darkening coefficients was based on spherically symmetric atmosphere models from the PHOENIX series, with a high spectral resolution (approximately 106 wavelengths), and covering the wavelength range 0.1-6.0 μm. The models were computed for solar composition, and a microturbulent velocity of 1.0 kms-1. We adopted two of the more accurate parametrizations for the coefficients: the four-term law, and the power-2 law. We applied the Levenberg-Marquardt least-squares minimization method, with a strategy to determine the critical value, μcrit, of the cosine of the viewing angle near the limb that is designed to improve numerical accuracy.Results. The limb-darkening coefficients were derived based on a total of 306 atmosphere models covering an effective temperature range of 2400-7800 K, and a log g interval between 3.0 and 5.5. We discuss the quality of the fits to the specific intensities provided by the power-2 and four-term laws, as well as by the often-used quadratic law. Based on a comparison, we recommend the use of the four-term or power-2 laws, in that order of preference. © The Authors 2025.We thank the anonymous referee for helpful comments. The Spanish MINC/AEI (PID2022-137241NB-C43 and PID2019-107061GB-C64) are gratefully acknowledged for their support during the development of this work. We also thank R. Morales and N. Robles (UDIT-IAA-CSIC) for their assistance with the calculations. A.C. also acknowledges financial support from grant CEX2021-001131-S, funded by MCIN/AEI/10.13039/501100011033. The model grid calculations presented here were partially performed at the National Energy Research Supercomputer Center (NERSC), which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC03-76SF00098. The authors gratefully acknowledge the computing time made available to them on the high-performance computers HLRN-IV at GWDG at the NHR Center NHR@Göttingen and at ZIB at the NHR Center NHR@Berlin. These Centers are jointly supported by the Federal Ministry of Education and Research, and the state governments participating in the NHR (www.nhr-verein.de/unsere-partner). Additional computing time was provided by the RRZ computing clusters Hummel and Hummel2. We thank all of these institutions for a generous allocation of computer time. This research has made use of the SIMBAD database, operated at the CDS, Strasbourg, France, and of NASA’s Astrophysics Data System Abstract Service.With funding from the Spanish government through the "Severo Ochoa Centre of Excellence" accreditation (CEX2021-001131-S).Peer reviewedEDP SciencesMinisterio de Ciencia e Innovación (España)Agencia Estatal de Investigación (España)Department of Energy (US)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/397689reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-137241NB-C43info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-107061GB-C64info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/CEX2021-001131-Shttp://dx.doi.org/10.1051/0004-6361/202554770Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3976892026-05-22T06:33:51Z
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