Progress on the calibration of surface brightness-color relations for early- and late-type stars
Anthony Salsi, Nicolas Nardetto, Denis Mourard, Dariusz Graczyk, Monica Taormina, Orlagh Creevey, Vincent Hocdé, Frédéric Morand, Karine Perraut, Grzegorz Pietr… 展开作者
Anthony Salsi, Nicolas Nardetto, Denis Mourard, Dariusz Graczyk, Monica Taormina, Orlagh Creevey, Vincent Hocdé, Frédéric Morand, Karine Perraut, Grzegorz Pietrzynski, Gail H. Schaefer
Surface brightness-color relations (SBCRs) are used for estimating angular diameters and deriving stellar properties. They are critical to derive extragalactic distances of early-type and late-type eclipsing binaries or, potentially, for extracting planetary parameters of late-type stars hosting planets. Various SBCRs have been implemented so far, but strong discrepancies in terms of precision and accuracy still exist in the literature. We aim to develop a precise SBCR for early-type B and A stars using selection criteria, based on stellar characteristics, and combined with homogeneous interferometric angular diameter measurements. We also improve SBCRs for late-type stars, in particular in the Gaia photometric band. We observed 18 early-type stars with the VEGA interferometric instrument, installed on the CHARA array. We then applied additional criteria on the photometric measurements, together with stellar characteristics diagnostics in order to build the SBCRs. We calibrated a SBCR for subgiant and dwarf early-type stars. The RMS of the relation is $σ_{F_{V_{0}}} = 0.0051\,$mag, leading to an average precision of 2.3% on the estimation of angular diameters, with 3.1% for $V-K < -0.2\,$mag and 1.8% for $V-K > -0.2\,$mag. We found that the conversion between Johnson-$K$ and 2MASS-$K_s$ photometries is a key issue for early-type stars. Following this result, we have revisited our previous SBCRs for late-type stars by calibrating them with either converted Johnson-$K$ or 2MASS-$K_s$ photometries. We also improve the calibration of these SBCRs based on the Gaia photometry. The expected precision on the angular diameter using our SBCRs for late-type stars ranges from 1.0% to 2.7%. By reaching a precision of 2.3% on the estimation of angular diameters for early-type stars, significant progress has been made to determine extragalactic distances using early-type eclipsing binaries.
On the Influence of ''Red Leak''of Light Filters on the Brightness Estimates of Stars of Late Spectral Types Illustrated by the Observations of Rapid Variability of Symbiotic Stars
Interferometric Survey of Stellar Parameters: Towards homogeneous FGK stars parameters and surface-brightness color relation in the context of PLATO space mission
Laboratoire Lagrange, Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS（拉格朗日实验室，蔚蓝海岸大学，蔚蓝海岸天文台，法国国家科学研究中心）；The CHARA Array of Georgia State University, Mount Wilson Observatory（佐治亚州立大学查拉阵列，威尔逊山天文台）
Effects of Alpha-Element Enhancement and the Thermally Pulsing-Asymptotic Giant Branch on Surface Brightness Fluctuation Magnitudes and Broadband Colors
Calibrating the Cepheid Period-Luminosity relation from the infrared surface brightness technique II. The effect of metallicity, and the distance to the LMC
Distance to the Globular Cluster M 3 from the Infrared Surface Brightness Technique applied to RR Lyrae stars
Universidad de Concepción（孔塞普西翁大学）；Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences（波兰科学院尼古拉·哥白尼天体物理中心）；Leibniz-Institut für Astrophysik Potsdam (AIP)（波茨坦莱布尼茨天体物理研究所）；Université Côte d’Azur（蔚蓝海岸大学）；Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange（蔚蓝海岸天文台，法国国家科学研究中心，拉格朗日实验室）；Instituto de Alta Investigación, Universidad de Tarapacá（塔拉帕卡大学高等研究院）；LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université Paris Cité（巴黎天文台低层大气研究、星体和宇宙学实验室，巴黎文理研究大学，法国国家科学研究中心，索邦大学，巴黎西岱大学）
