... Stellar Evolution is driven entirely by the never ending battle between Pressure and Gravity . As imbalances are reached, the star is driven to find a new Energy source. ... Pressure and gravitational forces are equal, the star is stable and its core is sufficiently hot to fuse Hydrogen into Helium More about main sequence stars . ... The luminosity generated by the core fusion of Helium into Carbon is far greater than the shell luminosity associated with the fusion of Hydrogen into Helium. ...

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... The material in "From Stargazers to Starships" meets several important requirements of the national standards. Pages cited below are from National Science Education Standards National Academy Press, Washington 1995. ... For example: the sections on astronomy not only describe calendars and sundials (including their construction), but also the astronomy of the ancient Greeks, including two different ways in which ancient Greeks estimated the distance to the Moon. ...

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... No, you can't. Currently, the EPIC response matrix generation tasks ( arfgen and rmfgen ) assume that the spectra have been generated using standard binnings. as described in the EPIC calibration web pages . ... withspecranges=yes , specchannelmin=0 , specchannelmax=11999 , and spectralbinsize=15 for the MOS (corresponding to a 800 channel rebinned spectrum) . ... Applying the EPIC response matrix generation tasks on spectra extracted with different binnings may produce errors like: . ...

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• Generation from In-Orbit Data
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DFS Department . Standard and recommended development tools . ... This tool is available on request from Helpdesk (except for the following machines: dfs3, dfs4 and dfs5, for which you have to contact Carlos ). ... Source Navigator IDE is recommended as a source code analysis and navigator tool for C, C++, Java, Tcl, [incr Tcl], FORTRAN and even COBOL on Linux:. ... webcheck is the DFS standard tool for archiving/retrieving DFS documents, web pages, Release Notes, schedules and ToDo lists. ...

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... 125, 1997 Gareth Hunt and H. E. Payne, eds. Error and Bias in the STSDAS fitting Package I. C. Busko Space Telescope Science Institute, Baltimore, MD 21218, E-mail: busko@stsci.edu Abstract. ... Results show that b oth methods may generate biased coefficients (at the few p ercent level), and over or under-estimate error bars (at the 10 p ercent level), in particular from low signal-to-noise data. ... Poisson noise introduced underestimation bias at a level of a few p ercent for lower (2­5) S/N data....

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• Development of an ADS Data Dictionary Standard
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Weaving together Astronomy+Statistics+Computer Science+Engineering+Intrumentation, far beyond the growing borders . ... Posts tagged ?standard procedure? ... statistician learning astronomy ? ... In two years of this slog?s life, there?s no posting by a statistician, except one about BEHR . Statisticians are busy and well distracted by other fields with more tangible data sets. ... Comment . ... Entries RSS . ... vlk on [MADS] Parallel Coordinates . ... Entries (RSS) and Comments (RSS) . ...

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• The AstroStat Slog standard candle

... The New 1997 IEEE Standards Products Catalog features the complete listing of standards publica-tions and services IEEE Standards offers, along with the information you need to place your order. ... Books and Other Products on Standards - contains a detailed listing of informative print and electronic publications relevant to standards and their implementation in areas of electrical engineering, electronics and computer technology. ... IEEE Standards Products Listing 22 . ... Power Electronics 41 . ...

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Next: Reduction procedure Up: Extinction and transformation Previous: Strategy . Standard stars can be included in the extinction solution, if one is careful. The problem is that there are usually appreciable ``conformity errors'' due to mismatch between the instrumental and the standard passbands [ 16 ]. ... Thus, it is wrong to assume that the transformation between the instrumental system and the standard system is exact, even if there were no measurement error in either system [ 1 ]. ...

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• Reduction without Standard Star
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Calibration and Data Reduction . The pipeline calibrated data are not flux calibrated and the data are in units of Data Numbers (DN). However a flux calibration is implicit in the header. To get flux density, multiply DN by the value of the keyword PHOTFLAM in the calibrated (. c0h ) science header file, and divide by the value of the keyword EXPTIME. ... Table 8.1 was generated using SYNPHOT to provide rough conversions to the Johnson UBVRI and Cousins RI systems. ...

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A problem, that can arise when moving from Fortran 77 to Fortran 90, is dependent on a usual deviation from the standard, and has to do especially with user programs. ... With many Fortran 77 implementations we wrote PROGRAM TEST REAL X WRITE(*,10) 10 FORMAT('Give X = ',$) READ(*,*) X WRITE(*,*) X END In Fortran 90 we use "non-advancing I/O" instead. ... In some old Fortran dialects the statement TYPE was used to write on a typewriter terminal and PRINT was used to write on the line printer. ...

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• Different Fortran standards
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• Peculiarities in the language Fortran 90

. md5 [ -0123456789 ] [ -h] file . This program generates the message digest of the given file using the RSA Message Digest 5 (MD5) and other selected algorithms. If file is not given, the program uses the standard input. -0123456789 . Select algorithm from the following list . -0 null . -1 MD5 . -2 SNEFRU . -3 CRC32 . -4 CRC16 . -5 MD4 . -6 MD2 . -7 SHA . -8 HAVAL . -9 null . -h . Display the result in hex; the default is base-64 . David L. Mills (mills@udel.edu)

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• Zen: ivoa standard process
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