Next: Methods for Structuring and Searching Very Large Catalogs . ... We have explored two automated classification methods: supervised classification using Artificial Neural Networks (ANN) and unsupervised classification using Self Organized Maps (SOM). These methods are used to classify IUE low-dispersion spectra of normal stars with spectral types ranging from O3 to G5. This paper describes the application of automated methods to the problem of the classification of stellar spectra. ...

... Automated Spectral Classification Using Neural Networks E. F. Vieira Laboratorio de AstrofТРsica Espacial y FТРsica Fundamental P.O.Box 50727, 28080 Madrid, Spain, Email: efv@lae#.esa.es J. D. Ponz GSED/ESA, Villafranca P.O.Box 50727, 28080 Madrid, Spain, Email: jdp@vilspa.esa.es Abstract. We have explored two automated classification methods: supervised classification using Artificial Neural Networks (ANN) and unн supervised classification using Self Organized Maps (SOM). ...

... Posts tagged ?Timing Analysis? Sep 9th, 2011| 01:05 pm | ... Irregular data gaps/unevenly sampled data . ... Category: Astro , CHASC , Data Processing , Methods , News , Optical , Stat , Timing | Comment . ... Algorithms arXiv Astro Bad AstroStat Bayesian CHASC Cross-Cultural Data Processing Fitting Frequentist Galaxies gamma-ray High-Energy Imaging Jargon Job Languages MC MCMC Meta Methods Misc News Nuggets Objects Optical Physics Quotes Spectral Stars Stat Timing Uncertainty X-ray . ...

Workshop on geometric analysis and spectral theory . ... On a class of random walks on groups with infinite number of generators". ... Optimal transportation, weak flows and very degenerate elliptic PDE's". ... Singular solutions to fully nonlinear elliptic equations". ... I will give some hints on how this conjecture is related to minimal surface theory and I will describe some flatness results for non local equations on one hand and on elliptic equations on riemannian manifolds on the other hand. ...

Please enter the lightcurve file name and period search parameters: . Lightcurve file: . ... Apply the Heliocentric correction and convert all dates to Terrestrial Time (TT)? ... Also, the Heliocentric correction cannot be applied to such lightcurves. ... This period search service is also available at the mirror sites: Mirror 1 , Mirror 2 , Mirror 3 , Mirror 4 . You may download the latest source code distribution and install the period search service at your own web server. ...

... SPECTRAL ANALYSIS OF sdB-He STARS FROM THE SDSS A. Ahmad , C. Winter and C. S. Jeffery Armagh Observatory, Col lege Hil l, Armagh BT61 9DG. ... We present spectral classification and physical parameters of a sample of "helium-rich" sdB-He stars from spectra obtained from the SDSS archive. ... In this study we used an artificial neural network (ANN) to classify spectra of sdB-He stars from the SDSS and to derive fundamental atmospheric parameters. ... Position of sdB-He stars on the log g - T 5. ...

. Proceedings of Turbulent Shear Flows XI, Sept. 1997. Jacques Lewalle, jlewalle@syr.edu

... General information . ... Staff . Research staff . Technical, administrative & librarian staff . ... Research . ... Infrared astronomy . ... Solar physics . ... Library . ... Friends of Arcetri . ... Computing Science . ... Operating Systems and Languages . ... General Physics . ... Structure of the Matter, Atomic and Nuclear Physics :General interest texts . ... Plasma Physics : General interest texts . ... Astronomy : General interest texts . ... Physics of the Planetary System . ...

Next: Accretion Disks with Up: StarsStellar Populations, Previous: Spectroscopic Analysis of . ... We present and discuss spatially resolved spectra of the accretion disk and the gas stream region as a function of distance from disk center, the spectrum of the uneclipsed light, and the radial temperature distribution in the ultraviolet. Keywords: Accretion disks, Cataclysmic variables . ... In this paper we report on the HST spectral mapping of the nova-like UX UMa. ...

... CALIBRATE/LINE Calculate coefficients for wavelength calibration . CENTER/.. Compute center of line . CONVERT/TABLE Make image from table values . EXTINCTION/SPECTRUM Correct 1-D image for extinction . IDENTIFY/GCURSOR Identify table entries from graphic display . IDENTIFY/LINE Equate X positions to wavelengths . INTEGRATE/GCURSOR Integrate line interactively . MODIFY/GCURSOR Change data in line interactively . ... SEARCH/LINE Search calibration lines . ...

... Capability of space means for the solution of problems of military character . ... Classification and functions of space systems of military purpose(assignment) . ... Ground complex of maintenance of launch and control of space vehicles . ... Capability of space systems of optical reconnaissance . ... Complexes topographical and earthresource shooting on base of "Zenit" space vehicle . ... Space vehicle for optical-electronic reconnaissance . ... System with space vehicle on low-altitude orbits . ...

... if(not withmasterindexfile) { foreach (directory is SAS_CCFPATH or in ccfpath) { foreach (file matching glob pattern) { if(is_a_ccf_file) { extract CCF attributes add to list organized by scope-type } } foreach ( scope-type ) { select constituent with: VALDATE = observationdate SUBDATE = analysisdate EVALDATE = observationdate highest ISSUE write selected constituet to CIF } } else { // use masterindexfile ...

03MAR03 Motivation: . Large survey datasets are imminent with alpha coming online. Automating analysis of data helps check telescope performance . Provide AO data to the astronomical community . AUSAC has been telling us to do this for the last couple of years What has been done: . Organize all of the spectral line data taken at the telescope . Provide access to subsets of the raw data (hdrinfo and actual data). Archive the calibration data and provide access to it. ...

PUL VLBI Analysis Center . ... IVS : International VLBI Service for Geodesy and Astrometry . ... An IVS VLBI Analysis Center at the Central Astronomical Observatory at Pulkovo of the Russian Academy of Sciences, also widely known as Pulkovo Observatory, has been organized in September 2006. ... The center is a part of the Pulkovo EOP and Reference Systems Analysis Center (PERSAC) . ... Results of VLBI data analysis can be found at Pulkovo EOP and Reference Systems Analysis Center (PERSAC) page. ...

... Field of interest: data analysis and interpretation of X-ray observations of BHC and NS systems, astrophysics of compact objects and related phenomena: X-ray , optical and radio observations , shocks and stellar winds, emission mechanism, the spectral and timing analysis of the X-ray emission from microquasars ( signature of accreting BH), atoll- and Z-sources ( signature of accreting NS), modeling of INTEGRAL images % . ...

... Member Functions (functions) . Global Functions . ... Data Selection . ... Units, Doppler and Frequency Reference Frame . Rest Frequency . ... Data Input . ... Frequency Frame Alignment . ... Data Output . ... Using Linecatalog . ... Setting Rest Frequencies . ... Frequency Switching . ... Function Summary . ...

... Bojan Nikolic web pages (r. 329) . ... Analysis of (radio) spectra . The RNested package is a re-implementation of the main algorithms from the radiospec package into the R statistical data analysis environment. ... packages ( "RNested" , repos = c ( "http://www.mrao.cam.ac.uk/~bn204/soft/R" , "http://cran.us.r-project.org" )) . ... RNested ? Nested Sampling in R & analysis of spectra . ... Copyright 2005 -- 2016, Bojan Nikolic feedback welcome ...

... A more commonly used set of subclasses are based upon the character of the optical spectrum: FSRQ (flat-spectrum radio quasar, for objects with emission-line dominated spectra) and BL Lac (nearly lineless objects). ... However, neither this survey nor any of the other new X-ray or radio-based surveys can yet undertake the task of resystematizing the classification of flat-spectrum radio sources, as the identification of their samples are all incomplete. ... 1 are shared by both FSRQs and BL Lacs. ...

Multi-Wavelength investigations of the Sun and modern problems of solar activity . SAO RAS . ... The conference goal is to present and discuss achievements in the field of experimental and theoretical investigations of a solar activity. Analysis of the 23d solar activity cycle and connections with the Space Weather. ... Solar activity and disturbances of the solar wind and cosmic rays. Modern observational methods for solar investigations. ... Copyright © 2006 SAO RAS . ... RAS | ...

Chair of solid state physics . ... Students and postgraduate students . ... The following topics are included: acquaintance with a LabView software most often applied in laboratories to automation of experiment, a photolithography without which the modern manufacturing techniques of low-dimensional structures is impossible, as well as the tasks allowing students to master bases of low-temperature experiment, a technique of a high pressure, work with low-dimensional semiconductor structures. ...