منابع مشابه
THE ANGULAR DIAMETER OF k BOÖTIS
Using the CHARA Array and the Palomar Testbed Interferometer, the chemically peculiar star k Boötis has been spatially resolved.We havemeasured the limb darkened angular diameter to be LD 1⁄4 0:533 0:029mas, corresponding to a linear radius of R? 1⁄4 1:70 0:10R . Themeasured angular diameter yields an effective temperature for kBoo of TeA 1⁄4 8887 242 K. Based on literature surface gravity esti...
متن کاملThe Angular Diameter of λ Boötis
Using the CHARA Array and the Palomar Testbed Interferometer, the chemically peculiar star λ Boötis has been spatially resolved. We have measured the limb darkened angular diameter to be θLD = 0.533 ± 0.029 mas, corresponding to a linear radius of R⋆ = 1.70±0.10 R⊙. The measured angular diameter yields an effective temperature for λ Boo of Teff = 8887±242 K. Based upon literature
متن کاملMean Angular Diameters and Angular Diameter Amplitudes of Bright Cepheids
We predict mean angular diameters and amplitudes of angular diameter variations for all monoperiodic Population I Cepheids brighter than 〈V 〉 = 8.0 mag. The catalog is intended to aid selecting most promising Cepheid targets for future interferometric observations.
متن کاملThe angular diameter and distance of the Cepheid ζ Gem
Cepheids are the primary distance indicators for extragalactic astronomy and therefore are of very high astrophysical interest. Unfortunately, they are rare stars, situated very far from Earth. Though they are supergiants, their typical angular diameter is only a few milliarcseconds, making them very challenging targets even for long-baseline interferometers. We report observations that were ob...
متن کاملAngular Diameter Distances in Clumpy Friedmann Universes
Solving null-geodesic equations, behavior of angular diameter distances is studied in inhomogeneous cosmological models, which are given by performing N-body simulations with the CDM spectrum. The distances depend on the separation angle θ of ray pairs, the mass m and the radius rs of particles consisting of galaxies and dark matter balls, and cosmological model parameters. The calculated dista...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1975
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/173.1.29p