... 435Snellen+ 15 GHz, and peak flux densities ranging from ~ 40 to ~ 900 mJy. Counts of GPS sources in our sample as a function of flux density have been compared with counts of large scale sources from WENSS scaled to 2 GHz, the typical peak frequency of our GPS sources. ... However, we note that the redshift distributions of GPS and large scale radio sources are different and that this hampers a direct and straightforward interpretation of the source counts. ...

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• Spectra of 300 sources
• A fast-scan extragalactic source survey at 4.755 GHz
• Source Positions

The Astronomy Net . Articles | AstroGuide | ... Forums . ... H ere you can find resouces to help understand perhaps the grandest of all sciences. ... Upcoming Sky Events . ... This site includes lists of manufacturers, vendors, software, etc. organized in the AstroGuide to help when you are looking to purchase your tools. ... Astronomy Articles . ... Are you interested in writing an article for the Astronomy Net? ... www.astronomy.net . ... dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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. Go Here for Hubble Ultra Deep Field . ___________________________________________________________________ The Electronic Universe Project e-mail: nuts@moo.uoregon.edu

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• Physics 162: Alternative Energy; Spring 1998
• Physics 162: Alternative Energy
• Geology Materials

Next: CORRELATOR BOARDS Up: OBSERVING PROCEDURES Previous: Frequency Switching . ... Continuum sources in the list used for flux density calibration were selected in an ad-hoc fashion from a variety of places, but primarily from Kuehr et al (A&AS, 45, 367, 1981), the compendium of linearly polarized sources by Tabara & Inoue (A&AS, 39, 379, 1980), and an unpublished list of unconfused calibrator sources prepared from the NVSS survey by Jim Condon and Qi Feng Yin. ... Board 0 . ...

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• Calibration Scans
• AGES Database Search
• VLBI at Arecibo Observatory

... Classes . Files . ... File List . File Members . casa . Utilities . ... National Radio Astronomy Observatory 00023 //# 520 Edgemont Road 00024 //# Charlottesville, VA 22903-2475 USA 00025 //# 00026 //# $Id: Compare.h 20551 2009-03-25 00:11:33Z Malte.Marquarding $ 00027 00028 #ifndef CASA _COMPARE_H 00029 #define CASA _COMPARE_H 00030 00031 //# Includes 00032 #include casa /aips.h 00033 #include casa / Utilities /DataType.h 00034 00035 namespace casa { //# NAMESPACE ...

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• An alternative approach to calibration
• Selection and Multi-Source/Multi-Frequency Datasets
• Flux density bootstrapping

... LABORATORY OF RADIO ASTRONOMICAL OBSERVATIONS . Radio sources identification is one of the most important tasks of the current radio astrophysics. ... Optical idetification. ... Optical identifications of subsample of steep spectra radio sources from RC catalog using 6m SAO telescope of SAO RAS: optical observations. ... Astronomy Reports. ... Identification of radio sources with data of various radio catalogs allows one to construct continual spectrum of the object and its radio structure. ...

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home education > family astro . SEARCH ASP SITE: Match ALL words Match ANY word . ... Astronomy from the Ground Up . Project ASTRO . Family ASTRO . About Family ASTRO . Family ASTRO History & Evolution . ... Family ASTRO National Network . Family ASTRO Program Design & Materials . Family ASTRO Sample Activities . Family ASTRO Suggested Agendas . Family ASTRO Resource Guides . ... More Tips (How-To Manual & Working with Families . ... Resources . ... resources | ...

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• ASP: Exploring the Solar System: Further Guides and Resources
• ASP: Astronomical Pseudo-science: A Skeptic's Resource List
• ASP: The Return of Halley's Comet

Dust in galaxies can be mapped either by the FIR/submillimeter emission, the optical or infrared reddening of starlight, or the extinction of a known background source. ... We find that distant galaxies are predominantly in low-extinction sections marked by the color maps, indicating that their number depends both on the cloud cover of Spitzer-resolved dust structures, mostly the spiral arms, and a diffuse, unresolved underlying disk. ...

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• Silicon Nanoparticles: Source of Extended Red Emission?
• Energy Sources of the Far-Infrared Emission of M33
• Herschel Key Program Heritage: a Far-Infrared Source Catalog for the Magellanic

... Space Organizations . Image Archives . ... Space Related Software Archives . ... Net Resources . ... National Solar Observatory Public Relations . NASA Historical Space Archive . ... NASA Home Page . NASA/Kennedy Space Center . ... SETI Institute Home Page . ... NASA Image eXchange (NIX) . ... NASA Solar Data Analysis Center . ... Selected Deep Space Images . ... Software from explorer.arc.nasa.gov . ... Space Settlement Home Page . ... Overview of Space Resources at CERN . ...

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• On line Resources
• Algorithm
• A homogeneous chemical analysis of the inner Galactic disk from the first data

XMM-Newton Science Analysis System . ... Meta Index / Home Page A source is classified as either ``point-like'' or ``extended'' by comparing its computed semi-major axis with that of the point-spread function, both having been computed using moments. A source is ``extended'' if the difference between its semi-major axis and that of the PSF is greater than 3 times the error in the semi-major axis of the source, otherwise it is classified as ``point-like''. XMM-Newton SOC/SSC -- 2008-10-22 ...

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• EPIC source finding thread: step by step
• How to extract MOS spectra of a point-like source and associated matrices
• Source surrounded by strong mod-8 pattern - bit 4

This illustration compares the environment around NGC 4151's supermassive black hole with the orbits of the planets in our solar system тАФ the planets themselves are not shown to scale. Echoes of X-ray flares detected in XMM-Newton data demonstrate that the X-ray source (blue sphere, center) is located above the black hole's accretion disk. ... Credit: NASA's Goddard Space Flight Center ...

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• Solar system ice: source of Earth's water | Astronomy.com

... The VSOP Survey Continuum Source List . The radio sample for the VSOP continuum survey was defined to include all extragalactic radio sources with: . a total flux density at 5 GHz, S>=1.0 Jy . ... The sample also included all sources in the sky with a 5 GHz flux density S>5 Jy, regardless of spectral index and galactic latitude. ... The source would then be included in the VSOP sample (three of the sources were found with a flux density above 1 Jy and added to the sample). ...

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• source comment

. The Source Code Control System is an essential tool for any project with multiple source files or which has several people working with multiple source files. It provides a way to keep track of a source file's development and to prevent it from being altered by more than one person at a time. Putting files under SCCS control . Checking out files . Checking in files . Getting information about files . Creating new releases . Comparing files under SCCS control .

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Next: Large-Scale Data Management . ... Table of Contents - Subject Index - Author Index - Search . Astronomical Data Analysis Software and Systems XIII . ... 314, 2004 . ... Resource Registries for the Virtual Observatory . ... Automated Determination of Stellar Population Parameters in Galaxies Using Active Instance-based Learning . T. Solorio, O. Fuentes, R. Terlevich, E. Terlevich, and A. Bressan . ... T. Estrada-Piedra, J. P. Torres-Papaqui, R. Terlevich, O. Fuentes, and E. Terlevich . ...

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• An Extragalactic Point Source Simulator for SIRTF Pipeline Testing
• ADASS 2003 Conference Proceedings
• QPSIM: An IRAF/PROS Tool for Source Simulation

... 172 ] Briefly, the count rate at the detector from a source at a redshift z is . ... Figure 55 shows the ``Green functions'' for the double compact binary merging rate   evolution assuming no collapse anisotropy. ... Another way that diverse peculiarities in the - distribution induced by the sources evolution could arise is connected with a possible non-monotonic character of the star formation rate in galaxies. ... 22 ] Figure  56 shows two-dimensional cuts through the parameter space. ...

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• Population Synthesis of X-ray Sources at the Galactic Center
• Population synthesis of X-ray sources at the Galactic center
• X-ray Galactic Sources and Binary Radiopulsars as Probes of the Initial Mass

Planetary Illumination, and Its effect on Climate Models of Earth-like Exomoons Duncan Forgan1,2 , Vergil Yotov1 1 2 SUPA, Institute for Astronomy ... Compared to an Earth-like planet, there are several extra sources and sinks of energy available to an Earth-like exomoon, including: Tidal Heating Planetary Illumination (thermal flux and reflected starlight) Eclipses of the star by the planet (acts as a sink) Circumstellar HZ - Zero Moon ...

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• Galaxy Evolution: Radio sources and their environments
• The 7C(G) survey
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The New Solar System , J. Kelly Beatty et al . ... The Planets" opus 32 by Gustav Holst (1874-1934) performed by Andr Previn and the Royal Philharmonic Orchestra; Telarc CD-80133 Many of these are available at The Nine Planets Bookstore . ... Calvin J. Hamilton , the author of Views of The Solar System , made many of the inline images I use here. ... Mark Takacs , David Hecox et. al. at JPL, authors of Welcome to the Planets also provided many inline images. ... Credits .. ...

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• Planetary Picture List
• ntptrace - trace a chain of NTP servers back to the primary source
• Sternberg Astronomical Institute

The New Solar System, 3rd Edition, Beatty and Chaikin Eds. Stardust to Planets, Harry Y. McSween, Jr. ... The Planets" opus 32 by Gustav Holst (1874-1934) performed by Andr Previn and the Royal Philharmonic Orchestra; Telarc CD-80133 Many of these are available at The Nine Planets Bookstore . ... Calvin J. Hamilton , the author of Views of The Solar System , made many of the inline images I use here. ... Ken Edgett, the author of DSN Solar System Menu provided a few more inline images. ... Credits .. ...

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• "Exploration" as a Classroom Resource
• Additional Space Physics Resources
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Stellarium 0.12.3 . ... FileљStructure . FileљList . ... core . planetsephems . vsop87.h . ... VSOP87.nep) and rearranged it into this piece of software. ... 12 љ into the software supplied in this file. ... 18 љ copy of this software and associated documentation files (the "Software"), . ... 48 љ #define _VSOP87_H_ . ... 54 љ #define VSOP87_MERCURY 0 . 55 љ #define VSOP87_VENUS 1 . 56 љ #define VSOP87_EMB 2 . ... 63 љ void GetVsop87Coor( double jd, int body, double *xyz); . ...

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• Stellarium: core/StelObserver.hpp Source File
• Stellarium: core/modules/MinorPlanet.hpp Source File
• Stellarium: core/modules/Comet.hpp Source File

Next: Filtering ROSAT HRI data Up: ROSAT HRI Recipes Previous: Correlating Spectral Data with . Although the spatial variation of the quantum efficiency across the HRI is nominally within 10% for most of the detector, occasionally it may be desirable to flat-field a map with preflight calibration measurements. ... Store the new gain map image using ``blink" in SaoImage. ... The quantum efficiency correction (QEC) is the inverse of the intensity determined from the QE map at the source position. ...

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• Spectral Extraction of Extended Sources