Functional Data Classification of Variable Stars
نویسندگان
چکیده
منابع مشابه
Automated classification of variable stars for ASAS data
With the advent of surveys generating multi-epoch photometry and their discoveries of large numbers of variable stars, the classification of the obtained times series has to be automated. We have developed a classification algorithm for the periodic variable stars using a Bayesian classifier on a Fourier decomposition of the light curve. This algorithm is applied to ASAS (All Sky Automated Surv...
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With the advent of surveys generating multi-epoch photometry and the discovery of large numbers of variable stars, the classification of these stars has to be automatic. We have developed such a classification procedure for about 1700 stars from the variable star catalogue of ASAS 1-2 (All Sky Automated Survey, Pojmański 2000) by selecting the periodic ones and by applying an unsupervised Bayes...
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We present an automatic classification method for astronomical catalogs with missing data. We use Bayesian networks, a probabilistic graphical model, that allows us to perform inference to predict missing values given observed data and dependency relationships between variables. To learn a Bayesian network from incomplete data, we use an iterative algorithm that utilises sampling methods and ex...
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The linear adiabatic pulsation-periods of Mira variable stars have been derived. Approximately 2701[1]models were calculated for M = 0.7 MΘ to 2 MΘ stars with radii from 180 RΘ to 340 RΘ and luminosities from 2800 LΘ to 10,000 LΘ. The chemical composition of all models is (X,Z) = (0.7,0.02). From the result of this study, linear relations on Luminosity-Period-Mass relationship and luminosity-pe...
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This thesis investigates the classification of variable stars and the discovery of interesting behaviour in some of them. A secondary aim was to attempt to do this without astronomical expertise (domain knowledge). The data comes from the Macho dataset which consists of time series observations of the red and blue magnitudes of about 60 million stars, each observed approximately every night. Th...
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ژورنال
عنوان ژورنال: Communications for Statistical Applications and Methods
سال: 2013
ISSN: 2287-7843
DOI: 10.5351/csam.2013.20.4.271