Optimization applied to selected exoplanets
Yükleniyor...
Tarih
2021
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Transit and radial velocity models were applied to archival data in order to examine exoplanet properties, in particular for the recently discovered super-Earth GJ357b. There is however considerable variation in
estimated model parameters across the literature, and especially their uncertainty estimates. This applies even for
relatively uncomplicated systems and basic parameters. Some published accuracy values thus appear highly overoptimistic. We present our reanalyses with these variations in mind and specify parameters with appropriate
confidence intervals for the exoplanets Kepler-1b, -2b, -8b, -12b, -13b, -14b, -15b, -40b and -77b and 51 Peg. More
sophisticated models in WINFITTER (WF), EXOFAST and DACE were applied, leading to mean planet densities for
Kepler-12b, -14b, -15b and -40b as: 0:11 0:01, 4:04 0:58, 0:43 0:05 and 1:19þ0:31 0:36 g per cc respectively. We
confirm a rocky mean density for the Earth-like GJ357b, although we urge caution about the modelling given the low
S/N data. We cannot confidently specify parameters for the other two proposed planets in this system.
Açıklama
Anahtar Kelimeler
Optimisation, Exoplanets, Light Curve Analysis, Radial Velocity Curve Analysis
Kaynak
Journal of Astrophysics and Astronomy
WoS Q Değeri
Q3
Scopus Q Değeri
Cilt
42
Sayı
2
Künye
Ng, S. Y., Jiadi, Z., Püsküllü, Ç., Banks, T., Budding, E., & Rhodes, M. D. (2021). Optimization applied to selected exoplanets. Journal of Astrophysics and Astronomy, 42(2). https://doi.org/10.1007/s12036-021-09779-3
