... A correlation between metal abundance and orbital elements (the eccentricity and angular momentum) has been found for three semples of disk stars of our Galaxy with abundance derived from detailed analysis. The correlation indicates that metal abundance in the Galaxy kept increasing after the birth of old disk stars and that the Galaxy kept collapsing during the formation of its disk subsystems. ...

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. ...

... 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. ...

... Telescopes . ... 2002: . A quartz echelle spectrograph with a large diameter of the collimated beam (NES) equipped with a CCD (2048x2048 elements) was designed, manufactured and put into operation in the Nasmyth focus of the 6-m telescope. ... We have developed and tested the model of a new-generation three-element broadband radiometric matrix system at the RATAN-600 extremely short wavelength of 1 cm, allowing a large replication to over 100 elements. ...

... The collecting area is increased by nesting concentric mirror pairs, all having the same focal length. ... Figure shows the largest optical element being ground at HDOS. ... X-ray testing demonstrated that the CXO mirrors are indeed the largest high-resolution X-ray optics ever made; the nominal effective area (based on the ground calibrations) is shown as a function of energy in the left panel of Figure , along with those of their Einstein and ROSAT predecessors. ...

This module provides for documents with Server Side Includes (SSI). ... Any document with handler of "server-parsed" will be parsed by this module, if the Includes option is set. If documents containing server-side include directives are given the extension .shtml, the following directives will make Apache parse them and assign the resulting document the mime type of text/html : AddType text/html .shtml AddHandler server-parsed .shtml The following directive must be given for ... cgi . ...

Abstract -- Abundances of heavy elements decreases with increasing galactocentric distance almost in all disk galaxies. ... To explain this gradient in young objects and in the interstellar gas one has to assume that a typical disk galaxy is an open system, i.e. it expels some synthesized heavy elements into the circumgalactic space and/or accretes intergalactic gas with zero metallicity, with rates of both processes depending on the galactocentric distance. ...

... Space flight . ... On-line Data . ... a - defines the size of the orbit . ... i - defines the orientation of the orbit with respect to the Earth's equator . defines where the low point, perigee, of the orbit is with respect to the Earth's surface . ... defines where the satellite is within the orbit with respect to perigee . Info / On-line data: General description Position J-Track J-Track 3D Explanation . Info: Industry news On-line Data Company ATLAS news Events We in press Contact . ...

... The engine operates with all three propellants (lox, kerosene, hydrogen) in the booster mode (mode 1) and transitions to bipropellant operation (lox, hydrogen) for the latter portion of the trajectory (mode 2). ... In mode 1 operation the hydrogen enhances the combustion of the kerosene to provide to tripropellant specific impulse levels higher than obtainable with separate combustion of the fuels. ... mode 1) . ... DASA, Munchen, February 1994, приведены следующие параметры двигателя РД-701 : . ...

MPEC 2010-L25 : 2010 LG14 6/7/10 9:33 AM Printer- friendly version Search MPC/CBAT IAU Minor Planet Center MPC Operations Status Processing (Info) ECS: Accessible Observer Services (NEOs) N N N N N N N EO Services Overview EO Confirmation EO Confirmation (RA order) EO Ratings EO Page EO Observation Planning Aid EOChecker MPEC 2010- L25 : 2010 LG14 The following Minor Planet Electronic Circular may be linked- to from your own Web pages, but must not otherwise be redistributed electronically . ...

MATSYM - symbolic matrix processor . ... To use the program you will need a MAT file (liked CIR file: "User manual for CIRSYM program") of your system. ... In first string of MAT file enter any text you want to be the title of your system. ... Starting from string 2 (if is not comments - "*") enter the system element name, incident row and column and, optionally, its value. ... To generate a solution, run MATSYM.exe and enter "system_file_name.CIR" or click on the "ENTER" (in "MAT" case). ...

Crystals of Siberia Solutions for laser systems CRYSTALS of SIBERIA Ltd. ... LBO crystal, SHG Dimensions: 8 mm(W) x 8 mm(H) x 25 mm(L) Cutting angle: Theta: 90 degrees Phi: 11.6 degrees Anti-reflection Coating: DBAR@1064+532 nm both sides Quantity: 1 element Price: $2070 per element Item 2. ...

... For given geographical longitude and time zone show the current data and time, Universal data and time, current local star time. ... Accept 10 different data formats (data&time, data with decimal day of month, data with decimal day of year, decimal year, some Julian dates), calculate from any formate to others, show day of week. Current data and time direct insertion function is exists. ... Calculate angular distance between two points at the sky by its equatorial coordinates. ...

... l - the mean galactic longitude; . ... mul - the median proper motion along galactic longitude of the stars of the OB-association, in units of 0.001 arcsec year -1 ; . dml - the estimation of mul dispersion in the OB-association, in 0.001 arcsec year -1 ; . mub - the median proper motion along galactic latitude of the stars of the OB-association, in units of 0.001 arcsec year -1 ; . dmb - the estimation of mub dispersion in the OB-association, in 0.001 arcsec year -1 ; . ...

Общая Астрономическая Конференция > Форумы общей направленности > Любые вопросы от новичков > Шпионим за спутниками . ... Просмотр полной версии : Шпионим за спутниками . ... 08.07.2007, 22:56 . ... Зайдите на сайт www.stoff.pl (http://www.stoff.pl) Там можно на халяву скачать программу Orbitron (поддержывает множество языков). Потом заходим на сайт - www.celestrak.com/NORAD/elements/ (http://www.celestrak.com/NORAD/elements/) Оттуда берем текущие орбиты интересующих нас спутников - напр. ...

WDC-A Digital Exchange Format for One-Minute Geomagnetic Data (Update August 1993) 1. The logical record length is 400 coded characters containing header information, blank spaces, and data for one element for one hour. ... Each logical record contains header information and data in the following format: North polar distance, longitude, year, month, day, hour, element, observatory code, blank spaces, 60 data values, and an hourly mean. ... ORG is the origin of the data. A = Alaska Chain. ...

JSC History . ... NASA History . ... Space Shuttle: 1981 to 2011 . NASA's Space Shuttle orbiters were the first spacecraft capable of routinely launching into orbit like rockets and then returning to Earth as gliders. ... http://www.nasa.gov/agency/crm/shuttle/index.html . ... http://www.jsc.nasa.gov/history/oral_histories/sts-r.htm . ... http://www.jsc.nasa.gov/history/shuttle_pk/pk/Flight_001_STS-001_Press_Kit.pdf . ... http://www.jsc.nasa.gov/history/shuttle_pk/shuttle_press.htm . ...

Microsymposium 40, abstract 88, 2004 (A4 format) GAMMA RAYS FROM MAJOR ELEMENTS BY THERMAL NEUTRON CAPTURE REACTIONS: EXPERIMENT AND SIMULATION FOR PLANETARY GAMMA-RAY SPECTROSCOPY. ... Then the calculation can be restarted by producing gamma rays and let them trans- GAMMA RAYS FROM MAJOR ELEMENTS BY THERMAL NEUTRON CAPTURE REACTIONS: N. Yamashita et al. port and react, with initial energies determined the outside multiplication and initial locations wh neutron capture reaction took place. ...

... The Utilization of Spatial Enhancement of Landsat Images in the Delineation of Structural Elements, Red Sea Hills, NE - Sudan . ... In contrast to spectral image enhancements, spatial filters emphasize or de-emphasize image data of various spatial frequencies. ... Wherein, most of the structural elements in the area are clear and esily descernible. Subtle enhancements on the structural lineaments in the area enabled the author to produce a structural map of the area under investigation. ...

Your First Telescope . Articles | ... Eyepieces . ... You don't really NEED more than 3 or 4 carefully chosen eyepieces, a barlow, and perhaps a filter or two, but most of us eventually wind up with collections, some of them quite impressive. Eyepieces: The first accessory a newcomer buys is usually a new eyepiece. ... The Kellner is a three element design that shows an acceptable 40-45 degree FOV, and good correction of spherical and chromatic aberration. ... www.astronomy.net . ...