Results 21 to 30 of about 7,372,917 (304)
Fundamental parameters of massive stars [PDF]
EAS Publications Series, 2004 21 pages, 3 figures, to appear in "Massive Stars: Formation, Evolution and Environment", eds. Heydari-Malayeri & Zahn (proceedings of 2002 Aussois summer school)
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Open Astronomy, 2011 Interstellar extinction is investigated in a 1.5 square degree area of the Cepheus Flare in the direction of the dark cloud TGU 619 at ℓ=102.5°, b=+15.5°.
Zdanavičius K. +4 more
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Fundamental Parameters of the W Serpentis Stars [PDF]
International Astronomical Union Colloquium, 1989 AbstractApplication of digital cross-correlation spectroscopy to the spectra of the W Serpentis binaries SX Cas and RX Cas has allowed an accurate determination of the orbits and rotations of the (mass-losing) K-subgiant secondary components. The distortion of the primary radial-velocity curves due to the influence of the prominent accretion disks in ...
J. Andersen, B. Nordström
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Setting Up of the Strömvil System Standards and Standard Regions
Open Astronomy, 2003 CCD photometry of standard areas of the seven-color Strömvil photometric system in some open and globular clusters is described. The primary standards are being measured with a two-channel photoelectric photometer on the 1.5 meter telescope on Mt. Lemmon.
Philip A. G. Davis +3 more
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Nonlinear estimation of the fundamental matrix with minimal parameters [PDF]
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2004 The purpose of this paper is to give a very simple method for nonlinearly estimating the fundamental matrix using the minimum number of seven parameters. Instead of minimally parameterizing it, we rather update what we call its orthonormal representation, which is based on its singular value decomposition.
Adrien Bartoli, Peter F. Sturm
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Some Photometric Characteristics of Population II Orbital Visual Binary Stars
Open Astronomy, 2003 A MV ,B−V diagram for metal-deficient, kinematically selected thick disk and halo visual binary stars with known orbits is presented. The magnitude differences Δm between the components are analyzed.
Bartkevičius A., Gudas A.
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Cross Catalogue Matching with Virtual Observatory and Parameterization of Stars
Open Astronomy, 2012 Virtual Observatory facilities allow users to make a fast and correct cross-matching of objects from various surveys. They yield multi-color photometry data (color indices) on registered objects and make it possible to determine stellar parameters.
Malkov O. +6 more
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Fundamental Parameters of Cepheids [PDF]
International Astronomical Union Colloquium, 1985 In the two centuries since the discovery of δ Cephei and η Aquilae, the study of Cepheids, and of pulsating stars in general, has become a very important field in astronomy. The usefulness of Cepheids, both as distance indicators and as test objects for stellar astrophysics, has been amply demonstrated, and if one just looks at the flood of papers on ...
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In Defence of Geometrical Algebra [PDF]
, 2016 The geometrical algebra hypothesis was once the received interpretation of Greek mathematics. In recent decades, however, it has become anathema to many.
Fundamental mathematics +2 more
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, 2002 Contribution to proceedings of NIC Symposium 2001, 13 pages, 7 figures, uses nic-series ...
Sommer, Rainer, Wittig, Hartmut
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