We present interferometric observations of 7 main-sequence and 3 giant stars with spectral types from B2 to F6 using the PAVO beam combiner at the CHARA array. We have directly determined the angular diameters for these objects with an average precision of 2.3%. We have also computed bolometric fluxes using available photometry in the visible and infrared wavelengths, as well as space-based ultraviolet spectroscopy. Combined with precise \textit{Hipparcos} parallaxes, we have derived a set of fundamental stellar properties including linear radius, luminosity and effective temperature. Fitting the latter to computed isochrone models, we have inferred masses and ages of the stars. The effective temperatures obtained are in good agreement (at a 3% level) with nearly-independent temperature estimations from spectroscopy. They validate recent sixth-order polynomial (B-V)-$T_\mathrm{eff}$ empirical relations \citep{Boyajian2012a}, but suggest that a more conservative third-order solution \citep{vanBelle2009} could adequately describe the (V-K)-$T_\mathrm{eff}$ relation for main-sequence stars of spectral type A0 and later. Finally, we have compared mass values obtained combining surface gravity with inferred stellar radius (\textit{gravity mass}) and as a result of the comparison of computed luminosity and temperature values with stellar evolutionary models (\textit{isochrone mass}). The strong discrepancy between isochrone and gravity mass obtained for one of the observed stars, $γ$\,Lyr, suggests that determination of the stellar atmosphere parameters should be revised.
CHARA Interferometry and TESS Asteroseismology of the Core-Helium Burning Red Giant $κ$ Cyg
Sydney Institute for Astronomy, School of Physics, University of Sydney(悉尼大学物理学院天体物理研究所);Institute for Astronomy, University of Hawai‘i(夏威夷大学天文研究所);Sydney Informatics Hub, Core Research Facilities, University of Sydney(悉尼大学核心研究设施悉尼信息学中心)
Asteroseismology and interferometry of the F7V spectroscopic binary $χ$ Draconis A in the TESS CVZ
Aarhus University(奥胡斯大学);University of Sydney(悉尼大学);Macquarie University(麦考瑞大学);Institute of Space Sciences (ICE, CSIC)(空间科学研究所(ICE,CSIC));Institut d’Estudis Espacials de Catalunya (IEEC)(加泰罗尼亚空间研究学院)
Detection and Astrometry of the Ba-Bb Subsystem in $α$ Piscium: First Dual-Field Interferometry at the CHARA Array
The CHARA Array of Georgia State University(佐治亚州立大学查拉阵列);European Organisation for Astronomical Research in the Southern Hemisphere (ESO)(欧洲南方天文台);Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS(蔚蓝海岸大学蔚蓝海岸天文台法国国家科学研究中心);Department of Astronomy, University of Michigan(密歇根大学天文学系);Center for High Angular Resolution Astronomy and Department of Physics and Astronomy, Georgia State University(佐治亚州立大学高分辨率天体测量中心及物理与天文学系);Astrophysics Group, Department of Physics & Astronomy, University of Exeter(埃克塞特大学物理与天文学系天体物理学组)
Diameters and Temperatures VII: High-angular resolution measurements of Solar-type stars with the CHARA Array
Louisiana State University(路易斯安那州立大学);Lowell Observatory(洛厄尔天文台);Georgia State University(佐治亚州立大学);University of Sydney(悉尼大学);University of Hawaii(夏威夷大学);Australian National University(澳大利亚国立大学);University of Rochester(罗切斯特大学)