Term mixture regarding solar chemical composition refers to relative abundances of heavy elements. Abundances of hydrogen and helium cannot be determined reliably from observations, therefore concentration of these elements are not taken from observational data. ... Table contains only elements which are abundant enough to be included into opacity and equation of state computations. ... First "low-Z abundances" to be published were AGS05. ... 5.5 . ... 6.22 AG89 : Anders E., Grevesse N. 1989. ...

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• Long description for relative flow example

Subject of Celestial Mechanics. ... Differential Absolute Coordinates Equations of the Problem. ... General Integral of Non-Perturbed Motion. ... General Equation of Non-Perturbed Orbit. ... Other Integration Methods of Non-Perturbed Motion Differential Equations; Bine Equation for Case of Non-Perturbed Motion. ... Ellipsical Motion, Kepler Equation. ... Motion Differential Equations in Absolute Coordinates. ... Equation of System of Bodies Motion in Barycentric Coordinates, in Relative Coordinates. ...

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• General Astrophysics

... Content Model: %Body.Content . ... Note that the ID, LANG and CLASS attributes can be used with virtually all of the elements permitted in the document body. ... CLASS . ... The CLASS attribute is most commonly used to attach a different style to some element, but it is recommended that where practical class names should be picked on the basis of the element's semantics, as this will permit other uses, such as restricting search through documents by matching on element class names. ...

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• Captions

.

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• Astronomy HyperText Book: Fusion Sequences in Stars
• Formation of the Earth

... HST Phase II Proposal Instructions for Cycle 20 > Chapter 10: Fine Guidance Sensors (FGS) > 10.2 Mode = POSConfig = FGS . 10.2 Mode = POS . ... In addition, a few stars (reference and/or target) should be observed multiple times during a visit to map any positional drift of the field due to HST pointing characteristics (see the FGS Instrument Handbook) . ... The default values of the Optional Parameters are set in this Mode to provide acceptable data for single, zero angular diameter stars. ...

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• GHRS Instrument Handbook
• Absorption line spectra of the UV bright z=2.4 QSO HE 1122-1649
• The HST Focal Plane and the GHRS Apertures

Next: RSOG Pre-Observation Products . ... Mission Elements . ... The main mission elements (ME) are: . The RSOG, based at ASC, which is responsible for the science operation of the RadioAstron Mission. ... The Main Ballistic(Navigation) Center (MBC) belonging to Lavochkin Association coordinates preparation and exchange of orbit determination and orbit reconstraction ptoducts. ... Experiment codes of five characters are used in naming GRT related files. ... RSOG . ... Corr (GTS?) ... Corr (RSOG?) ...

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• GOCG Pre-Observation Products
• Project SUBMILLIMETRON
• RSOG Pre-Observation Products

... Initialise the elemental abundances. FUNCTION TAP_ABMET ( ZELEM ) . ... Return the relative solar photospheric abundance for a given element. ... Return the relative cosmic abundance for a given element. ... This allows the user to use their own abundance data, if required. ... Where no abundance data are available, or the atomic number is out of range, TAP_ABUND returns the value TAPC__DNULL. ... Algorithm: The nuclide abundances are stored and returned as percentages for each element. ...

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• Armagh Observatory
• Simon Jeffery's Software Store: TAP chemical functions
• Simon Jeffery's Software Store: TAP library

... To plot the data (and model, here xitau.model), I have read the model, computed the model values for the ASTROMETRY, and used Plot|ASTROMETRY to produce the ASTROMETRY plot widget. ... First, plot the data and with Util|Ellipse and the mouse buttons interactively define an apparent ellipse to fit your data as best as you can. ... Under Util|Orbit, there is a Thiele-Innes procedure to estimate the orbital elements using your apparent ellipse and Kepler's laws! ... Back to tour page . ...

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• ESO - Thesis Topic: Constraining Stellar Interiors and Mixing via Depletion
• Rivi: Be Stars
• Sample Identification

... With McMath, Robert R.; Mohler, Orren C. Telluric Bands of CH 4 in the Solar Spectrum. 1949 v.109 p.28 . With Mohler, Orren C.; McMath, Robert R. New Solar Lines in the Spectral Region 1.52-1.75 . ... With Mohler, Orren C.; Pierce, A. Keith; McMath, Robert R. New Solar Lines in the Spectral Region 1.97-2.49 . ... With Mohler, Orren C.; Pierce, A. Keith; McMath, Robert R. Table of Infrared Solar Lines, 1.4-2.5 . ... With McMath, Robert R.; Mohler, Orren C.; Pierce, A. Keith . ...

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• Journal "Peremennye Zvezdy"
• On the Origin of Gold
• Астронет > On the Origin of Gold

Function: GgiForm Purpose: Create a Ggi form element Category: USER-INTERFACE File: ggi.src Author: J.P. Terlouw Use: #include "ggi.h" ident form; char *name; int border; form = GgiForm(name, border); form - 'handle' by which element can be referenced. name - the form's name. border - the form's border width. ... A form element can be used as a container for any number of 'ordinary' Ggi elements. ... If a form element is deleted, all elements contained by it will be deleted automatically. ...

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• http://www.atnf.csiro.au/computing/software/gipsy/sub/GgiSetPosition.dc2
• WCSLIB: tabprm Struct Reference
• WCSLIB: disprm Struct Reference

... 1915QB4_C22v12p1___ Informations. relative to: J1-Io: 201, J2-Europe: 134, J3-Ganymede: 85 reference frame: astrometric centre of frame: topocentre epoch of equinox: date time scale: GMT (UT1=GMT+12h) reduction: no information coordinates: apparent distance, position angle diff. refraction: removed receptor: heliometer telescope: Refractor, F = 2.5 m, D = 17.8 cm observers: Gill David, Finlay W.H. data included in standard data file: no Comments. no information Format. ... Year of the observation 4....

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• jg0026
• jg0036
• jg0009

The beam pattern and the polarization characteristics . of the radio telescope RATAN-600 . The Mueller matrix elements was computed via formulas [1]: . ... The BP were computed by the aperture method, proceeding from the fild distribution in the aperture of the primary mirror. The components of the main and cross-polarization components of the electric field in the vertical aperture of the primary mirror was computed in Frenel diffraction approximation. ...

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• The peculiar post-AGB supergiant IRAS04296+3429: optical spectroscopy and its
• Discussion
• The spectrograph design and the observing procedure

... Spanish translation of "Stargazers" by J. M. Mendez and Horacio Chavez . ... Astronomy of the Earth's motion in space: . ... The Path of the Sun, the Ecliptic . ... 4b. Optional: Libration of the Moon . ... Kepler's 3 Laws of Planetary Motion ," a one-hour overview lecture to teachers presented 23 March 2005. Guide to the sections on Kepler's Laws which follow below. ... 11a. Ellipses and Kepler's First Law . ... Kepler's Second Law . 12a. More on Kepler's Second Law . ... Kepler's Third Law . ...

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• INTERBALL Auroral probe (INTERBALL 2) post-flight orbital elements collection
• Elements of Algebra
• The INTERBALL Auroral PROBE orbital elements collections

... For example, precision of the approximation was calculated for Solar system and 47 Uma star system Kepler orbital elements : Jupiter Saturn 9.537 0.0539 Uranus 19.189 0.0473 Neptune 30.070 0.0086 47 Uma b 2.10 0.032 0.10 3.76 5.83 0.89 47 Uma c 3.60 0 ... rad , rad , rad l, rad 0.0228 1.754 4.801 0.328 0.0434 1.983 5.865 5.591 0.0135 1.291 1.685 2.495 0.0309 2.300 4.636 4.673 Kepler elements for Solar ... Estimation accuracy of disturbing function (h1) expansion is presented. ...

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• The Canadian S2 Correlator - Principles of Radio Interferometry
• Catalogue of double stars
• Pulkovo NEO Page: Ephemeris Support

Amanda Karakas One of the most important research fields in astrophysics is the study of the origin of the elements. ... Asymptotic Giant Blanch (AGB) Stars: For low and intermediate-mass stars (with initial masses between about 0.8 to 8 solar masses) the most important nucleosynthesis occurs when stars evolve off the main sequence to the giant branches. ... This indicates that these stars obtained their unusual abundances via mass transfer from a previous red giant star, that has long evolved away. ...

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• Proposed Facility
• David Nicholls: CV and publications

Next: Specifying Pixels in Up: MIDAS Data Structures Previous: Specifying Keywords . The MIDAS table file system is described in detail in chapter 5 of this volume. Here we just explain briefly how to access the various elements in a table file. To do so, it is necessary to specify the table name , the column and the row . ... table,column,row = value , e.g. to set the element in the 3rd row of the column labeled :XREF in the table lola.tbl to 1.234 , use lola,:xref,@3 = 1.234 . ...

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• Optical spectroscopy
• Spectra of 300 sources
• The very metal-poor local dwarf galaxies

The Arcetri Spectral Code (Landi and Landini 2002) allows to evaluate the spectrum of continuum and line radiation emitted by hot and optically thin plasmas in the spectral range 1-2000 Angstrom. The Code is composed by a large database of atomic data and transition probabilities for calculating spectral line emissivities and a suite of fortran programs able to evaluate free-free, free-bound and two-photon continuum radiation. ... Landi, E., Landini, M., 2002, A , 384, 1124 . ...

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• The Arcetri Spectral Code - E.Landi and M.Landini (2001)
• Arcetri Spectral Code related publications

CORONAL METALLICITIES OF ACTIVE BINARIES Vinay Kashyap, Jeremy Drake, Deron Pease Harvard­Smithsonian Center for Astrophysics JЁ urgen Schmitt Max Planck Institut fЁ ur Extraterrestriche Physik SUMMARY We analyze EUV and X­ray data on a sample of X­ray active binary stars (HR 1099, – And, UX Ari, VY Ari, ё UMa, 44i Boo, and YY Gem) to determine coronal abundances. EUVE spectrometer data are used to obtain line fluxes, which are then used to determine Differential Emission Measures (DEMs). ...

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• Astro Jargon
• The AstroStat Slog Blog Archive [Book] Elements of Information Theory
• Spatial Corrections of ROSAT HRI Observations from Wobble-related Aspect

... The experience of determination of the link between radio sources and dynamical reference frames is presented. To obtain this connection we used a series of very long baseline interferometry (VLBI) observations of the spacecraft Phobos-2 and angularly nearby quasars. ... The dynamical reference frame is determined by equator and equinox of these ephemerides. ... References . ... The relative orientation of the radio and dynamical reference frames can be described by a sequence of three rotations . ...

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• Building CCMTools as required by CASA Bojan Nikolic web pages (r. 329)
• G6.4-0.1
• Some notes on Python relevant to ALMA and ALMA data reduction Bojan Nikolic web

Cadmium Tungstate (CdWO 4 ) . Single crystals . ... 010) . ... Wavelength of max. emission . ... Light yield (photons/keV) . ... Refractive index at emission maximum . Light output relative to NaI(Tl) . ... Max. crystal diameter . ... As grown" single crystals and some elements . Polished CdWO 4 50 mm . ...

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• X-Ray Structural Analysis
• Comet Ephemerides
• Department of Solid State Physics MIPT