B stars in open clusters: fundamental parameters [PDF]
Proceedings of the International Astronomical Union, 2010 AbstractWe use the BCD spectrophotometric classification system to derive fundamental parameters of B stars in NGC 2439, NGC 3766 and NGC 6087. We are able to perform a complete study of each open cluster by deriving spectral classification of its members, distance modulus and age as well.
Aidelman, Yael Judith +3 more
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Fundamental effective temperature measurements for eclipsing binary stars – I. Development of the method and application to AI Phoenicis [PDF]
Monthly notices of the Royal Astronomical Society, 2020 Stars with accurate and precise effective temperature (Teff) measurements are needed to test stellar atmosphere models and calibrate empirical methods to determine Teff.
N. Miller, P. Maxted, B. Smalley
semanticscholar +3 more sources
Fundamental parameters of “normal” B stars in the solar neighborhood [PDF]
Proceedings of the International Astronomical Union, 2010 AbstractUnderstanding phenomena of activity in stars, like pulsations or magnetism, benefits from systematic comparisons of some key physical parameters of active with those of “normal” stars. Here we concentrate on a careful derivation of fundamental parameters of a well selected sample of 27 “normal” B stars in nearby OB associations and in the field.
Nieva, M., Przybilla, N.
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Fundamental parameters of eight Am stars: comparing observations with theory★ [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 In this paper we present a detailed analysis of a sample of eight Am stars, four of them are in the Kepler field of view. We derive fundamental parameters for all observed stars, effective temperature, gravity, rotational and radial velocities, and chemical abundances by spectral synthesis method.
CATANZARO, GIOVANNI, Ripepi V.
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Using limb darkening to measure fundamental parameters of stars [PDF]
Astronomy & Astrophysics, 2012 Context. Limb darkening is an important tool for understanding stellar atmospheres, but most observations measuring limb darkening assume various parameterizations that yield no significant information about the structure of stellar atmospheres. Aims. We use a specific limb-darkening relation to study how the best-fit coefficients relate to fundamental
Neilson, Hilding R., Lester, John B.
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Effects of gravitational darkening on the determination of fundamental parameters in fast-rotating B-type stars [PDF]
, 2005 In this paper we develop a calculation code to account for the effects carried by fast rotation on the observed spectra of early-type stars. Stars are assumed to be in rigid rotation, and the grid of plane-parallel model atmospheres used to represent the
Y. Frémat +3 more
semanticscholar +2 more sources
Angular Diameters and Fundamental Parameters of Forty-four Stars from the Navy Precision Optical Interferometer [PDF]
Astronomical Journal, 2021 We measured the angular diameters of 44 stars with the Navy Precision Optical Interferometer, obtaining uncertainties on the limb-darkened diameter of 2% or less for all but four stars.
E. Baines +11 more
semanticscholar +1 more source
The CAMELS Multifield Data Set: Learning the Universe’s Fundamental Parameters with Artificial Intelligence [PDF]
Astrophysical Journal Supplement Series, 2021 We present the Cosmology and Astrophysics with Machine Learning Simulations (CAMELS) Multifield Data set (CMD), a collection of hundreds of thousands of 2D maps and 3D grids containing many different properties of cosmic gas, dark matter, and stars from ...
F. Villaescusa-Navarro +27 more
semanticscholar +1 more source
Fundamental parameters and evolutionary status of the magnetic chemically peculiar stars HD 188041 (V1291 Aquilae), HD 111133 (EP Virginis), and HD 204411: spectroscopy versus interferometry [PDF]
Monthly notices of the Royal Astronomical Society, 2019 The determination of fundamental parameters of stars is one of the main tasks of astrophysics. For magnetic chemically peculiar stars, this problem is complicated by the anomalous chemical composition of their atmospheres, which requires special ...
Anna Romanovskaya +6 more
semanticscholar +1 more source
When a Period Is Not a Full Stop: Light Curve Structure Reveals Fundamental Parameters of Cepheid and RR Lyrae Stars [PDF]
Monthly notices of the Royal Astronomical Society, 2019 The period of pulsation and the structure of the light curve for Cepheid and RR Lyrae variables depend on the fundamental parameters of the star: mass, radius, luminosity, and effective temperature.
E. Bellinger +3 more
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