Zobrazeno 1 - 10
of 193
pro vyhledávání: '"Andreasen D"'
Publikováno v:
A&A, 690, A58 (2024)
Aims: Obtaining accurate derivations of stellar atmospheric parameters is crucial in the fields of stellar and exoplanet characterization. We present the upgraded version of our computational tool ODUSSEAS with a new reference scale applied to derive
Externí odkaz:
http://arxiv.org/abs/2408.15808
Autor:
Sousa, S. G., Adibekyan, V., Santos, N. C., Mortier, A., Barros, S. C. C., Delgado-Mena, E., Demangeon, O., Israelian, G., Faria, J. P., Figueira, P., Rojas-Ayala, B., Tsantaki, M., Andreasen, D. T., Brandao, I., Ferreira, A. C. S., Montalto, M., Santerne, A.
The number of exoplanet detections continues to grow following the development of better instruments and missions. Key steps for the understanding of these worlds comes from their characterization and its statistical studies. We explore the metallici
Externí odkaz:
http://arxiv.org/abs/1903.04937
High-resolution spectroscopic studies of solar-type stars have revealed higher iron abundances derived from singly ionized species compared to neutral, violating the ionization equilibrium under the assumption of local thermodynamic equilibrium. In t
Externí odkaz:
http://arxiv.org/abs/1902.06769
Autor:
Sousa, S. G., Adibekyan, V., Delgado-Mena, E., Santos, N. C., Andreasen, D. T., Ferreira, A. C. S., Tsantaki, M., Barros, S. C. C., Demangeon, O., Israelian, G., Faria, J. P., Figueira, P., Mortier, A., Brandao, I., Montalto, M., Rojas-Ayala, B., Santerne, A.
Publikováno v:
A&A 620, A58 (2018)
Context: Exoplanets have now been proven to be very common. The number of its detections continues to grow following the development of better instruments and missions. One key step for the understanding of these worlds is their characterization, whi
Externí odkaz:
http://arxiv.org/abs/1810.08108
Autor:
Tsantaki, M., Andreasen, D. T., Teixeira, G. D. C., Sousa, S. G., Santos, N. C., Delgado-Mena, E., Bruzual, G.
In the era of vast spectroscopic surveys focusing on Galactic stellar populations, astronomers want to exploit the large quantity and good quality of data to derive their atmospheric parameters without losing precision from automatic procedures. In t
Externí odkaz:
http://arxiv.org/abs/1710.00260
Autor:
Santos, N. C., Adibekyan, V., Figueira, P., Andreasen, D. T., Barros, S. C. C., Delgado-Mena, E., Demangeon, O., Faria, J. P., Oshagh, M., Sousa, S. G., Viana, P. T. P., Ferreira, A. C. S.
Publikováno v:
A&A 603, A30 (2017)
Analysis of the statistical properties of exoplanets, together with those of their host stars, are providing a unique view into the process of planet formation and evolution. In this paper we explore the properties of the mass distribution of giant p
Externí odkaz:
http://arxiv.org/abs/1705.06090
Autor:
Andreasen, D. T., Sousa, S. G., Tsantaki, M., Teixeira, G. D. C., Mortier, A., Santos, N. C., Suarez-Andres, L., Delgado-Mena, E., Ferreira, A. C. S.
Publikováno v:
A&A 600, A69 (2017)
Context: Thanks to the importance that the star-planet relation has to our understanding of the planet formation process, the precise determination of stellar parameters for the ever increasing number of discovered extrasolar planets is of great rele
Externí odkaz:
http://arxiv.org/abs/1703.06671
Autor:
Andreasen, D. T., Sousa, S. G., Mena, E. Delgado, Santos, N. C., Tsantaki, M., Rojas-Ayala, B., Neves, V.
Publikováno v:
A&A 585, A143 (2016)
Context: Effective temperature, surface gravity, and metallicity are basic spectroscopic stellar parameters necessary to characterize a star or a planetary system. Reliable atmospheric parameters for FGK stars have been obtained mostly from methods t
Externí odkaz:
http://arxiv.org/abs/1510.08273
Autor:
Herbert, T. D., Schuffert, J. D., Andreasen, D., Heusser, L., Lyle, M., Mix, A., Ravelo, A. C., Stott, L. D., Herguera, J. C.
Publikováno v:
Science, 2001 Jul 01. 293(5527), 71-76.
Externí odkaz:
https://www.jstor.org/stable/3084188
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