A Spectroscopic Analysis of a Sample of K2 Planet-host Stars: Stellar Parameters, Metallicities and Planetary Radii
- Autores
- Loaiza Tacuri, V.; Cunha, Katia; Smith, Verne V.; Martínez, Cintia Fernanda; Ghezzi, Luan; Schuler, Simon C.; Teske, Johanna; Howell, Steve B.
- Año de publicación
- 2023
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The physical properties of transiting exoplanets are connected with the physical properties of their host stars. We present a homogeneous spectroscopic analysis based on the spectra of FGK-type stars observed with the Hydra spectrograph on the WIYN telescope. We derived the effective temperatures, surface gravities, and metallicities, for 81 stars observed by K2 and 33 by Kepler 1. We constructed an Fe i and ii line list that is adequate for the analysis of R ∼ 18,000 spectra covering 6050-6350 Å and adopted the spectroscopic technique based on equivalent-width measurements. The calculations were done in LTE using Kurucz model atmospheres and the qoyllur-quipu (q 2) package. We validated our methodology via an analysis of a benchmark solar twin and solar proxies, which are used as a solar reference. We estimated the effects that including Zeeman-sensitive Fe i lines have on the derived stellar parameters for young and possibly active stars in our sample and found them not to be significant. Stellar masses and radii were derived by combining the stellar parameters with Gaia EDR3 and V magnitudes and isochrones. The measured stellar radii have a 4.2% median internal precision, leading to a median internal uncertainty of 4.4% in the derived planetary radii. With our sample of 83 confirmed planets orbiting K2 host stars, the radius gap near R planet ∼ 1.9 R ⊕ is detected, in agreement with previous findings. Relations between the planetary radius, orbital period, and metallicity are explored and these also confirm previous findings for Kepler 1 systems.
Fil: Loaiza Tacuri, V.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
Fil: Cunha, Katia. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil. University of Arizona; Estados Unidos
Fil: Smith, Verne V.. No especifíca;
Fil: Martínez, Cintia Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Ghezzi, Luan. Universidade Federal do Rio de Janeiro; Brasil
Fil: Schuler, Simon C.. University of Tampa; Estados Unidos
Fil: Teske, Johanna. No especifíca;
Fil: Howell, Steve B.. No especifíca; - Materia
-
(STARS:) PLANETARY SYSTEMS
STARS: FUNDAMENTAL PARAMETERS
TECHNIQUES: SPECTROSCOPIC, PARALLAXES - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/228065
Ver los metadatos del registro completo
id |
CONICETDig_f78355140888e310022fa7b7831fdd71 |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/228065 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
A Spectroscopic Analysis of a Sample of K2 Planet-host Stars: Stellar Parameters, Metallicities and Planetary RadiiLoaiza Tacuri, V.Cunha, KatiaSmith, Verne V.Martínez, Cintia FernandaGhezzi, LuanSchuler, Simon C.Teske, JohannaHowell, Steve B.(STARS:) PLANETARY SYSTEMSSTARS: FUNDAMENTAL PARAMETERSTECHNIQUES: SPECTROSCOPIC, PARALLAXEShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The physical properties of transiting exoplanets are connected with the physical properties of their host stars. We present a homogeneous spectroscopic analysis based on the spectra of FGK-type stars observed with the Hydra spectrograph on the WIYN telescope. We derived the effective temperatures, surface gravities, and metallicities, for 81 stars observed by K2 and 33 by Kepler 1. We constructed an Fe i and ii line list that is adequate for the analysis of R ∼ 18,000 spectra covering 6050-6350 Å and adopted the spectroscopic technique based on equivalent-width measurements. The calculations were done in LTE using Kurucz model atmospheres and the qoyllur-quipu (q 2) package. We validated our methodology via an analysis of a benchmark solar twin and solar proxies, which are used as a solar reference. We estimated the effects that including Zeeman-sensitive Fe i lines have on the derived stellar parameters for young and possibly active stars in our sample and found them not to be significant. Stellar masses and radii were derived by combining the stellar parameters with Gaia EDR3 and V magnitudes and isochrones. The measured stellar radii have a 4.2% median internal precision, leading to a median internal uncertainty of 4.4% in the derived planetary radii. With our sample of 83 confirmed planets orbiting K2 host stars, the radius gap near R planet ∼ 1.9 R ⊕ is detected, in agreement with previous findings. Relations between the planetary radius, orbital period, and metallicity are explored and these also confirm previous findings for Kepler 1 systems.Fil: Loaiza Tacuri, V.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; BrasilFil: Cunha, Katia. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil. University of Arizona; Estados UnidosFil: Smith, Verne V.. No especifíca;Fil: Martínez, Cintia Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Ghezzi, Luan. Universidade Federal do Rio de Janeiro; BrasilFil: Schuler, Simon C.. University of Tampa; Estados UnidosFil: Teske, Johanna. No especifíca;Fil: Howell, Steve B.. No especifíca;IOP Publishing2023-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/228065Loaiza Tacuri, V.; Cunha, Katia; Smith, Verne V.; Martínez, Cintia Fernanda; Ghezzi, Luan; et al.; A Spectroscopic Analysis of a Sample of K2 Planet-host Stars: Stellar Parameters, Metallicities and Planetary Radii; IOP Publishing; Astrophysical Journal; 946; 2; 4-2023; 1-240004-637XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/acb137info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:51:52Zoai:ri.conicet.gov.ar:11336/228065instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:51:52.628CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
A Spectroscopic Analysis of a Sample of K2 Planet-host Stars: Stellar Parameters, Metallicities and Planetary Radii |
title |
A Spectroscopic Analysis of a Sample of K2 Planet-host Stars: Stellar Parameters, Metallicities and Planetary Radii |
spellingShingle |
A Spectroscopic Analysis of a Sample of K2 Planet-host Stars: Stellar Parameters, Metallicities and Planetary Radii Loaiza Tacuri, V. (STARS:) PLANETARY SYSTEMS STARS: FUNDAMENTAL PARAMETERS TECHNIQUES: SPECTROSCOPIC, PARALLAXES |
title_short |
A Spectroscopic Analysis of a Sample of K2 Planet-host Stars: Stellar Parameters, Metallicities and Planetary Radii |
title_full |
A Spectroscopic Analysis of a Sample of K2 Planet-host Stars: Stellar Parameters, Metallicities and Planetary Radii |
title_fullStr |
A Spectroscopic Analysis of a Sample of K2 Planet-host Stars: Stellar Parameters, Metallicities and Planetary Radii |
title_full_unstemmed |
A Spectroscopic Analysis of a Sample of K2 Planet-host Stars: Stellar Parameters, Metallicities and Planetary Radii |
title_sort |
A Spectroscopic Analysis of a Sample of K2 Planet-host Stars: Stellar Parameters, Metallicities and Planetary Radii |
dc.creator.none.fl_str_mv |
Loaiza Tacuri, V. Cunha, Katia Smith, Verne V. Martínez, Cintia Fernanda Ghezzi, Luan Schuler, Simon C. Teske, Johanna Howell, Steve B. |
author |
Loaiza Tacuri, V. |
author_facet |
Loaiza Tacuri, V. Cunha, Katia Smith, Verne V. Martínez, Cintia Fernanda Ghezzi, Luan Schuler, Simon C. Teske, Johanna Howell, Steve B. |
author_role |
author |
author2 |
Cunha, Katia Smith, Verne V. Martínez, Cintia Fernanda Ghezzi, Luan Schuler, Simon C. Teske, Johanna Howell, Steve B. |
author2_role |
author author author author author author author |
dc.subject.none.fl_str_mv |
(STARS:) PLANETARY SYSTEMS STARS: FUNDAMENTAL PARAMETERS TECHNIQUES: SPECTROSCOPIC, PARALLAXES |
topic |
(STARS:) PLANETARY SYSTEMS STARS: FUNDAMENTAL PARAMETERS TECHNIQUES: SPECTROSCOPIC, PARALLAXES |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The physical properties of transiting exoplanets are connected with the physical properties of their host stars. We present a homogeneous spectroscopic analysis based on the spectra of FGK-type stars observed with the Hydra spectrograph on the WIYN telescope. We derived the effective temperatures, surface gravities, and metallicities, for 81 stars observed by K2 and 33 by Kepler 1. We constructed an Fe i and ii line list that is adequate for the analysis of R ∼ 18,000 spectra covering 6050-6350 Å and adopted the spectroscopic technique based on equivalent-width measurements. The calculations were done in LTE using Kurucz model atmospheres and the qoyllur-quipu (q 2) package. We validated our methodology via an analysis of a benchmark solar twin and solar proxies, which are used as a solar reference. We estimated the effects that including Zeeman-sensitive Fe i lines have on the derived stellar parameters for young and possibly active stars in our sample and found them not to be significant. Stellar masses and radii were derived by combining the stellar parameters with Gaia EDR3 and V magnitudes and isochrones. The measured stellar radii have a 4.2% median internal precision, leading to a median internal uncertainty of 4.4% in the derived planetary radii. With our sample of 83 confirmed planets orbiting K2 host stars, the radius gap near R planet ∼ 1.9 R ⊕ is detected, in agreement with previous findings. Relations between the planetary radius, orbital period, and metallicity are explored and these also confirm previous findings for Kepler 1 systems. Fil: Loaiza Tacuri, V.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil Fil: Cunha, Katia. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil. University of Arizona; Estados Unidos Fil: Smith, Verne V.. No especifíca; Fil: Martínez, Cintia Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina Fil: Ghezzi, Luan. Universidade Federal do Rio de Janeiro; Brasil Fil: Schuler, Simon C.. University of Tampa; Estados Unidos Fil: Teske, Johanna. No especifíca; Fil: Howell, Steve B.. No especifíca; |
description |
The physical properties of transiting exoplanets are connected with the physical properties of their host stars. We present a homogeneous spectroscopic analysis based on the spectra of FGK-type stars observed with the Hydra spectrograph on the WIYN telescope. We derived the effective temperatures, surface gravities, and metallicities, for 81 stars observed by K2 and 33 by Kepler 1. We constructed an Fe i and ii line list that is adequate for the analysis of R ∼ 18,000 spectra covering 6050-6350 Å and adopted the spectroscopic technique based on equivalent-width measurements. The calculations were done in LTE using Kurucz model atmospheres and the qoyllur-quipu (q 2) package. We validated our methodology via an analysis of a benchmark solar twin and solar proxies, which are used as a solar reference. We estimated the effects that including Zeeman-sensitive Fe i lines have on the derived stellar parameters for young and possibly active stars in our sample and found them not to be significant. Stellar masses and radii were derived by combining the stellar parameters with Gaia EDR3 and V magnitudes and isochrones. The measured stellar radii have a 4.2% median internal precision, leading to a median internal uncertainty of 4.4% in the derived planetary radii. With our sample of 83 confirmed planets orbiting K2 host stars, the radius gap near R planet ∼ 1.9 R ⊕ is detected, in agreement with previous findings. Relations between the planetary radius, orbital period, and metallicity are explored and these also confirm previous findings for Kepler 1 systems. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-04 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/228065 Loaiza Tacuri, V.; Cunha, Katia; Smith, Verne V.; Martínez, Cintia Fernanda; Ghezzi, Luan; et al.; A Spectroscopic Analysis of a Sample of K2 Planet-host Stars: Stellar Parameters, Metallicities and Planetary Radii; IOP Publishing; Astrophysical Journal; 946; 2; 4-2023; 1-24 0004-637X CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/228065 |
identifier_str_mv |
Loaiza Tacuri, V.; Cunha, Katia; Smith, Verne V.; Martínez, Cintia Fernanda; Ghezzi, Luan; et al.; A Spectroscopic Analysis of a Sample of K2 Planet-host Stars: Stellar Parameters, Metallicities and Planetary Radii; IOP Publishing; Astrophysical Journal; 946; 2; 4-2023; 1-24 0004-637X CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/acb137 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
IOP Publishing |
publisher.none.fl_str_mv |
IOP Publishing |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
_version_ |
1844613593077645312 |
score |
13.070432 |