... 1Wills Accurate measurements of relative flux density have been made between frequencies of 468 and 5009 MHz for 300 radio sources selected from Parkes catalogue. ... Excluding the incertainties in scaling these flux densities to an absolute system, rms errors vary from 0.24 Jy and 2.4 % at 635 MHz to 1.8 % at 2700 MHz; uncertainties in "absolute" scaling are thought to be about 45 %. ... Some sources whose spectra may be useful for flux density calibration are noted. ...

... Next: Cheating Poisson: A Up: Statistical Analysis Previous: Spatial Models and . ... The spatial distribution of stars in the Local Group dwarf irregular galaxy NGC 6822 has been studied, using recent positions and deep photometry for about 15,000 stars in the galaxy. Based on photometrical data, OB stars and red stars could be studied separately. Spatial statistical tools have been applied to the analysis of the spatial structure. ... Figure: Model selection by the aid of CAIC . ...

... HST . ... Home . ... Data . ... HST Peer Review Process . ... WFPC2 Home . ... Instrument . Instrument Home . WFPC2 History . ... Calibration . Calibration Home . Calibration Plan . ... LRF Data . ... Data Analysis . Data Analysis Home . Data Analysis Library . ... Instrument Handbook . Data Handbook . ... TIRs . Dither Handbook . WFPC2 Reprocessing . ... The photometric throughput of the WFPC2 was essentially unaffected by the 1997 servicing mission. ...

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. ...

... We have studied scaling relations (virial mass versus CO luminosity, luminosity versus size, linewidth versus size) for molecular clouds in the 30 Dor and N 159 regions in the Large Magellanic Cloud. ... The study of molecular clouds in the Galaxy has resulted in a number of scaling relations between global cloud properties such as mass, density, luminosity, size and velocity dispersion (e.g. Larson (1981) , Scoville & Sanders (1987) , Solomon et al. ... Elmegreen B.G., 1989, ApJ , 338 , 178. ...

... Our main goal was to study the large-scale distribution of the molecular gas in the Serpens region and to understand its relation with the denser gas in the cloud cores, previously studied at high angular resolution. ... The 13CO and C18O(1--0) maps of the centroid velocity show an increasing, smooth gradient in velocity from East to West, which we think may be caused by a global rotation of the Serpens molecular cloud whose rotation axis is roughly aligned in the SN direction. ...

Find Similar Abstracts . ... The velocity of clusters of galaxies relative to the microwave background. ... BACKGROUND RADIATION, GALACTIC CLUSTERS, MICROWAVE SCATTERING, VELOCITY MEASUREMENT, HIGH TEMPERATURE GASES, MICROWAVES, POLARIZED RADIATION, RADIAL VELOCITY, RADIO ASTRONOMY, THOMSON SCATTERING . ... Use: Authors Title Abstract Text Text Query with Keywords Return: Query Results Query Form Database: Astronomy Instrumentation Physics and Geophysics ABSTRACT QUERY USER FEEDBACK HELP ...

... Science User Portal . ... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... Survey Telescopes . ... ESO Science Newsletter . ... The UVES measurement values of the relative change of the fine structure constant alpha from the sample of absorption systems, plotted as a function of the redshift and the corresponding look-back time. ... The horizontal long dashed lines show the area of the previous claim of variation of the fine structure constant. ...

... epiclccorr (epiclccorr-1.0.8) [?? ... epiclccorr will treat all these corrections individually, developing and designing specific algorithms to correct the Relative Corrections . GTIs correction will be calculated using the GTI extensions located in the time series file, if any. ... Exposure correction is the time inside each frame where the CCD is taking data correctly (no counting or MIP problems). ... This correction will be calculated using the Live Time and Frame Time values of each mode. ...

Stellarium 0.12.3 . ... Classes . ... FileљStructure . ... Protected Member Functions | ... Protected Attributes . MultiLevelJsonBase Class Reference abstract . ... More... #include < MultiLevelJsonBase.hpp > . ... voidљ . initFromUrl (const QString &url) . ... boolљ . ... Definition at line 34 of file MultiLevelJsonBase.hpp . ... Load the element information from a JSON file. virtual void MultiLevelJsonBase::loadFromQVariantMap . ... Definition at line 107 of file MultiLevelJsonBase.hpp . ...

... Impedance . Electrical impedance, or simply impedance, describes a measure of opposition to a sinusoidal alternating current (AC). Electrical impedance extends the concept of resistance to AC circuits, describing not only the relative amplitudes of the voltage and current, but also the relative phases. ... Resistance is the real part of impedance; a device with a purely resistive impedance exhibits no phase shift between the voltage and current. ...

... Early on, our interest in chirping analysis functions was motivated by a different kind of chirping phenomenon: chirping due to perspective. ... Our interest in radar, however, drew us toward processes that are more accurately analyzed by linear-FM chirplets. ... We have also constructed other chirplet transforms, such as a three-parameter Doppler chirplet representation that models a source producing a sinusoidal wave, while moving along a straight line (e.g. a train whistle). ...

... The optical spectrum of the early B hydrogen-deficient star LSIV+6 deg2 has been analysed. With T_eff=31000K, logg=4.05, n_H~10^-4 and n_c~0.1 (relative abundances by number), it is the hottest high-gravity extreme helium star (EHe) yet studied. ... LSIV+6 deg2 is a comparatively metal-rich EHe star; abundances of C, N, O, Ne, Mg, Al and P are typical of other EHes, whilst Si and S are somewhat deficient. ...

. [ Go back to RadioAstronomy Dept ] . Andrew A. Martis . martis @ sai.msu.ru .

... Member Functions (functions) . Global Functions . ... Scantables . ... Units, Doppler and Frequency Reference Frame . Rest Frequency . Data Selection . ... Data Input . Scantable constructor . ... Frequency Frame Alignment . Scantable manipulation . Data Output . ... Scantable Mathematics . ... Function Summary . ...

... In this section, we develop a physical model of the secondary as a disk that is centrifugally supported in the radial direction and hydrostatically supported in the vertical direction. We assume that the disk is vertically isothermal and well mixed. ... where is the mean molecular mass of the gas, is the orbital period at the outer edge of the disk in years, and all of the mass of the secondary has been assumed to be concentrated near its center, so the Keplerian approximation is valid. ...

Central Astronomical Observatory at Pulkovo of Russian Academy of Sciences PUL Analysis Center Pulkovo IVS Analysis Center (PUL) 2009 Annual Rep ort Zinovy Malkin, Natalia Miller, Elena Popova Abstract This report briefly presents the PUL IVS Analysis Center activities during 2009 and plans for the coming year. The main topics of the investigations of PUL staff in that period were ICRF related studies, computation and analysis of EOP series, and VLBI2010 related issues. ...

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Proposal Identi cation No.: T1889 Date Received: 2004-Sep-29 18:23:40 Technical Page Proposal Type: Long-term General Category: Terrestrial Aeronomy Sub-Category: Radar Observation Category: Middle-Lower Atmosphere Total Time Requested: 108 Hours Proposal Title: Long-term AO Observations of Micrometeors and Associated Aeronomy ABSTRACT: Due to solar cycle ... The mass ux of micrometeoroids to the upper atmosphere is of considerable aeronomic importance. ...

... The data for ~ 5500 F-G stars are used to study their kinematics, metal abundance and HR diagram in terms of uvby photometry. The age - metallicity, velocity - metallicity, and age - velocity relations are derived. ... 4) At a given metallicity the kinematics of F dwarfs is close to that of G giants and the kinematics of G dwarfs is close to that of K giants. ... 1) При [Fe/H] < 0 звезды данной металличности обнаруживают отчетливую точку поворота главной последовательности (ГП). ...