Results 31 to 40 of about 14,659 (294)
Accurate fundamental parameters of eclipsing binary stars [PDF]
Proceedings of the International Astronomical Union, 2004 The study of detached eclipsing binaries is one of the most powerful ways to investigate the properties of individual stars and stellar systems. We present preliminary masses, radii and effective temperatures for the eclipsing binary WW Aurigae, which is composed of two metallic-lined A-type stars.
Southworth, J +3 more
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Fundamental Parameters of CP Stars [PDF]
Highlights of Astronomy, 1998 The quest for accurate fundamental parameters (M, R, Teff log g, v sin i) of CP stars has been a lasting problem ever since the nature and origin of these stars has been discussed. The main reason for the difficulty lies in the anomalous colours of these stars, linked with their abundance anomalies which are responsible for complicated blocking and ...
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The Pan-Pacific planet search. V. Fundamental parameters for 164 evolved stars
, 2016 We present spectroscopic stellar parameters for the complete target list of 164 evolved stars from the Pan-Pacific Planet Search, a five-year radial velocity campaign using the 3.9 m Anglo-Australian Telescope.
Tinney, C. G. +5 more
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The fundamental parameters of the roAp star HD 24712 [PDF]
Astronomy & Astrophysics, 2016 Context. There is still a debate about the nature of the mechanism that causes the pulsation excitation of the rapidly oscillating Ap stars that oscillate above the highest theoretically acoustic frequency. HD 24712 is a good test case for such a study because it is bright, its parallax accurately determined, and its frequency spectrum is well known ...
Perraut, K. +6 more
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Fundamental Parameters of 10 Ap-Stars [PDF]
, 2023 Представлен результат самосогласованного анализа спектров высокого разрешения для 10 Aр-звезд в диапазоне эффективных температур 7 000—11 000 К. Получены фундаментальные параметры звезд, определен химический состав их атмосфер и оценена стратификация ...
Романовская, А. М. +1 more
core
Eclipsing binary stars with a delta Scuti component [PDF]
, 2017 Eclipsing binaries with a d Sct component are powerful tools to derive the fundamental parameters and probe the internal structure of stars. In this study, spectral analysis of six primary d Sct components in eclipsing binaries has been performed. Values
Smalley
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Three Ultra-short-period Contact Eclipsing Binary Systems Mined from Massive Astronomical Surveys
The Astronomical Journal, 2023 We present the photometric analysis of three ultra-short-period total eclipsing binaries in contact configuration, CRTS_J172718.0+431624, OGLE-BLG-ECL-000104, and OGLE-BLG-ECL-000012, mined from massive astronomical surveys.
Athanasios Papageorgiou +5 more
doaj +1 more source
The Astrophysical Journal Letters, 2023 The detection of long-period binary stars containing a δ Scuti variable is helpful to study the formation and evolution of binaries in the intermediate-mass region.
Xin Lyu, Ming Yang
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Investigation of a W UMa-type contact binary GZ And in a physical triple system
Frontiers in Astronomy and Space SciencesGZ And is a variable star within the visually observed multiple-star system ADS 1693. Recent observations have yielded new light curves for GZ And, obtained using the Xinglong 85-cm telescope and the Transiting Exoplanet Survey Satellite (TESS) satellite.
Lin-Qiao Jiang +3 more
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FUNDAMENTAL PARAMETERS OF SUPERGIANT STAR HD 40589 (A0Iab)
Odessa Astronomical Publications, 2023 The atmosphere of HD 40589 (A0Iab) supergiant star of A spectral class was studied using the model atmosphere and parallax methods. The effective temperatures (Teff) and surface of gravity (log g) were determined using a comparison of the observed and calculated values of the photometric quantities [c1], Q and the equivalent widths of the hydrogen ...
Z. A. Samedov +3 more
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