منابع مشابه
Fundamental parameters of Cepheids IV . Radii and luminosities
A temperature scale for Cepheids is presented, based on Geneva photometry. It uses new atmosphere models computed at various values of microturbulent velocity. The scale so-obtained is compared to other ones and the importance of microturbulence effects is shown. This calibration is applied to 20 Cepheids for which the variation of microturbulence is known. The detailed variations of temperatur...
متن کاملMagnitudes of Fundamental - Mode Cepheids from Single - Epoch Observations
We present an empirical method for converting single-point near-infrared J, H, and K measurements of fundamental-mode Cepheids to mean magnitudes, using complete light curves in V or I bands. The algorithm is based on the template light curves in the near-infrared bandpasses. The mean uncertainty of the method is estimated to about 0.03 mag, which is smaller than the uncertainties obtained in o...
متن کاملJHK magnitudes of fundamental mode Cepheids from single - epoch observations
We present an empirical method of conversion of single-point near-infrared J, H and K measurements of fundamental mode Cepheids to mean magnitudes, using complete light curves in V or I bands. The algorithm is based on the template light curves in the near-infrared bandpasses. The mean uncertainty of the method is estimated to about 0.03 mag, which is smaller than the uncertainties obtained in ...
متن کاملReconstructing Cepheid Light Curve with Fourier Techniques II: Catalogue of the Fourier Parameters for OGLE LMC Fundamental Mode Cepheids
In this paper we present a catalogue of the Fourier parameters for the light curves of Large Magellanic Cloud fundamental mode Cepheids in the OGLE database. These Fourier parameters are obtained with a simulated annealing method. The photometric data are mainly fit with 4 to 8-order Fourier expansion, though some of the long period Cepheids require up to a 12-order fit to the data.
متن کاملExtracting the fundamental parameters
If supersymmetry is discovered at the LHC, the extraction of the fundamental parameters will be a formidable task. In such a system where measurements depend on different combinations of the parameters in a highly correlated system, the identification of the true parameter set in an efficient way necessitates the development and use of sophisticated methods. A rigorous treatment of experimental...
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ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 1985
ISSN: 0252-9211
DOI: 10.1017/s0252921100108978