Homogeneous spectroscopic parameters for bright planet host stars from the northern hemisphere: The impact on stellar and planetary mass

S. G. Sousa, N. C. Santos, A. Mortier, M. Tsantaki, V. Adibekyan, E. Delgado Mena, G. Israelian, B. Rojas-Ayala, V. Neves

Resultado de la investigación: Article

5 Citas (Scopus)

Resumen

Aims. In this work we derive new precise and homogeneous parameters for 37 stars with planets. For this purpose, we analyze high resolution spectra obtained by the NARVAL spectrograph for a sample composed of bright planet host stars in the northern hemisphere. The new parameters are included in the SWEET-Cat online catalogue. Methods. To ensure that the catalogue is homogeneous, we use our standard spectroscopic analysis procedure, ARES+MOOG, to derive effective temperatures, surface gravities, and metallicities. These spectroscopic stellar parameters are then used as input to compute the stellar mass and radius, which are fundamental for the derivation of the planetary mass and radius. Results. We show that the spectroscopic parameters, masses, and radii are generally in good agreement with the values available in online databases of exoplanets. There are some exceptions, especially for the evolved stars. These are analyzed in detail focusing on the effect of the stellar mass on the derived planetary mass. Conclusions. We conclude that the stellar mass estimations for giant stars should be managed with extreme caution when using them to compute the planetary masses. We report examples within this sample where the differences in planetary mass can be as high as 100% in the most extreme cases.

Idioma originalEnglish
PublicaciónAstronomy and Astrophysics
Volumen576
DOI
EstadoPublished - 1 abr 2015

Huella dactilar

planetary mass
Northern Hemisphere
stellar mass
planets
planet
stars
radii
catalogs
Advanced Reconn Electric Spacecraft
giant stars
cats
spectroscopic analysis
extrasolar planets
surface temperature
spectrographs
metallicity
derivation
gravitation
parameter
high resolution

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Citar esto

Sousa, S. G. ; Santos, N. C. ; Mortier, A. ; Tsantaki, M. ; Adibekyan, V. ; Delgado Mena, E. ; Israelian, G. ; Rojas-Ayala, B. ; Neves, V. / Homogeneous spectroscopic parameters for bright planet host stars from the northern hemisphere : The impact on stellar and planetary mass. En: Astronomy and Astrophysics. 2015 ; Vol. 576.
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abstract = "Aims. In this work we derive new precise and homogeneous parameters for 37 stars with planets. For this purpose, we analyze high resolution spectra obtained by the NARVAL spectrograph for a sample composed of bright planet host stars in the northern hemisphere. The new parameters are included in the SWEET-Cat online catalogue. Methods. To ensure that the catalogue is homogeneous, we use our standard spectroscopic analysis procedure, ARES+MOOG, to derive effective temperatures, surface gravities, and metallicities. These spectroscopic stellar parameters are then used as input to compute the stellar mass and radius, which are fundamental for the derivation of the planetary mass and radius. Results. We show that the spectroscopic parameters, masses, and radii are generally in good agreement with the values available in online databases of exoplanets. There are some exceptions, especially for the evolved stars. These are analyzed in detail focusing on the effect of the stellar mass on the derived planetary mass. Conclusions. We conclude that the stellar mass estimations for giant stars should be managed with extreme caution when using them to compute the planetary masses. We report examples within this sample where the differences in planetary mass can be as high as 100{\%} in the most extreme cases.",
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Sousa, SG, Santos, NC, Mortier, A, Tsantaki, M, Adibekyan, V, Delgado Mena, E, Israelian, G, Rojas-Ayala, B & Neves, V 2015, 'Homogeneous spectroscopic parameters for bright planet host stars from the northern hemisphere: The impact on stellar and planetary mass', Astronomy and Astrophysics, vol. 576. https://doi.org/10.1051/0004-6361/201425227

Homogeneous spectroscopic parameters for bright planet host stars from the northern hemisphere : The impact on stellar and planetary mass. / Sousa, S. G.; Santos, N. C.; Mortier, A.; Tsantaki, M.; Adibekyan, V.; Delgado Mena, E.; Israelian, G.; Rojas-Ayala, B.; Neves, V.

En: Astronomy and Astrophysics, Vol. 576, 01.04.2015.

Resultado de la investigación: Article

TY - JOUR

T1 - Homogeneous spectroscopic parameters for bright planet host stars from the northern hemisphere

T2 - The impact on stellar and planetary mass

AU - Sousa, S. G.

AU - Santos, N. C.

AU - Mortier, A.

AU - Tsantaki, M.

AU - Adibekyan, V.

AU - Delgado Mena, E.

AU - Israelian, G.

AU - Rojas-Ayala, B.

AU - Neves, V.

PY - 2015/4/1

Y1 - 2015/4/1

N2 - Aims. In this work we derive new precise and homogeneous parameters for 37 stars with planets. For this purpose, we analyze high resolution spectra obtained by the NARVAL spectrograph for a sample composed of bright planet host stars in the northern hemisphere. The new parameters are included in the SWEET-Cat online catalogue. Methods. To ensure that the catalogue is homogeneous, we use our standard spectroscopic analysis procedure, ARES+MOOG, to derive effective temperatures, surface gravities, and metallicities. These spectroscopic stellar parameters are then used as input to compute the stellar mass and radius, which are fundamental for the derivation of the planetary mass and radius. Results. We show that the spectroscopic parameters, masses, and radii are generally in good agreement with the values available in online databases of exoplanets. There are some exceptions, especially for the evolved stars. These are analyzed in detail focusing on the effect of the stellar mass on the derived planetary mass. Conclusions. We conclude that the stellar mass estimations for giant stars should be managed with extreme caution when using them to compute the planetary masses. We report examples within this sample where the differences in planetary mass can be as high as 100% in the most extreme cases.

AB - Aims. In this work we derive new precise and homogeneous parameters for 37 stars with planets. For this purpose, we analyze high resolution spectra obtained by the NARVAL spectrograph for a sample composed of bright planet host stars in the northern hemisphere. The new parameters are included in the SWEET-Cat online catalogue. Methods. To ensure that the catalogue is homogeneous, we use our standard spectroscopic analysis procedure, ARES+MOOG, to derive effective temperatures, surface gravities, and metallicities. These spectroscopic stellar parameters are then used as input to compute the stellar mass and radius, which are fundamental for the derivation of the planetary mass and radius. Results. We show that the spectroscopic parameters, masses, and radii are generally in good agreement with the values available in online databases of exoplanets. There are some exceptions, especially for the evolved stars. These are analyzed in detail focusing on the effect of the stellar mass on the derived planetary mass. Conclusions. We conclude that the stellar mass estimations for giant stars should be managed with extreme caution when using them to compute the planetary masses. We report examples within this sample where the differences in planetary mass can be as high as 100% in the most extreme cases.

KW - Catalogs

KW - Planetary systems

KW - Stars: abundances

KW - Stars: solar-type

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