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1. Astronomy HyperText Book: Stellar Evolution
... 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. ...
[ Сохраненная копия ]  Ссылки http://zebu.uoregon.edu/textbook/se.html -- 4.8 Кб -- 16.12.1997
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2. C, UNIX and Standard Libraries
... Using UNIX System Calls and Library Functions . ... To use system calls and library functions in a C program we simply call the appropriate C function. Examples of standard library functions we have met include the higher level I/O functions -- fprintf() , malloc() .. ... For most system calls and library functions we have to include an appropriate header file. e.g. stdio.h, math.h . ... Information on nearly all system calls and library functions is available in manual pages. ...
[ Сохраненная копия ]  Ссылки http://mavr.sao.ru/hq/sts/linux/book/c_marshall/node15.html -- 6.1 Кб -- 28.12.2007
[ Сохраненная копия ]  Ссылки http://www.sao.ru/hq/sts/linux/book/c_marshall/node15.html -- 6.1 Кб -- 02.10.2012
[ Сохраненная копия ]  Ссылки http://jet.sao.ru/hq/sts/linux/book/c_marshall/node15.html -- 6.1 Кб -- 02.10.2012
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3. Standard (Johnson) Magnitudes and Colours
... Standard magnitudes can only be computed for the U, B and V filters and hence the only standard colours that can be calculated are U-B, B-V and U-V. An important point to note, is that these standard colours can be computed using the following instrumental colours - U-B, B-V, U-V, (UVW1-U), (UVW1-B), (UVW1-V), (UVW2-B) and (UVW2-V). ... The program loops through these colours and if the relevant instrumental magnitudes are present computes the standard magnitudes and standard colour. ...
[ Сохраненная копия ]  Ссылки http://xmm.vilspa.esa.es/sas/7.1.0/doc/omsrclistcomb/node5.html -- 4.7 Кб -- 09.07.2007
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4. Standard stars
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 ]. ...
[ Сохраненная копия ]  Ссылки http://www.sao.ru/precise/Midas_doc/doc/94NOV/vol2/node296.html -- 9.4 Кб -- 23.02.1996
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5. ESO - Standard Star Catalogue Search Tool
... Science . ... Science Users Information > Observing with ESO Telescopes > Observing Tools and Services > Standard Stars Catalogues > Standard Star Catalogue Search Tool . ... Publications with ESO Data . ... ESO Data . ... This tool searches the standard star catalogues for standards that are within dX airmasses of the target at a given LST. ... In this case put the LST when the target was observed in the TargetLST box as before, and put the LST of the standard star observation in the StdObs LST box...
[ Сохраненная копия ]  Ссылки http://www.eso.org/sci/observing/tools/catsearch.html -- 32.5 Кб -- 10.04.2016
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6. Standard Setup Files
Next: Examples of Setup Files Up: Setup Files Previous: Setup Files Contents . Over 200 standard setup files have been created, covering many of the normal modes of observing. ... These especially include precisely defined, and somewhat complex cases like the Mark III standard modes (although MarkIII went the way of the dinosaur long ago. ... v '' files: . These are setup files for VLBI observations using VLBA recording formats. ... These are setup files for Mark III observations. ...
[ Сохраненная копия ]  Ссылки http://www.atnf.csiro.au/people/Tasso.Tzioumis/sched/Standard_Setup_Files.html -- 9.1 Кб -- 10.04.2016
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7. Fluxes and Standard Magnitudes
The pipeline calibrated data are not flux calibrated and the data are in units of Data Numbers (DN). However, a flux calibration is supplied in the header keywords. ... where m is in the STMAG system which is based on a spectrum with constant flux per unit wavelength set to roughly match the Johnson system at V. The more conventional systems are based on Vega's spectrum. Table 8.1 was generated using SYNPHOT to provide rough conversions from STMAG to the Johnson UBVRI and Cousins RI systems. ...
[ Сохраненная копия ]  Ссылки http://www.stsci.edu/instruments/wfpc2/Wfpc2_hand2/ch8_calibration8.html -- 14.9 Кб -- 29.08.2000
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8. UNIXhelp Glossary - "S"
... a utility program that enables the user to interact with the UNIX operating system. Commands entered by the user are passed by the shell to the operating system which carries them out. ... The user may select which one they wish to use. a character at the start of the command line which indicates that the shell is ready to receive your commands. ... This is assumed to be the keyboard unless input is redirected or piped from a file or another command. the destination for information from a command. ...
[ Сохраненная копия ]  Ссылки http://comet.sai.msu.ru/UNIXhelp/glossary/gs.html -- 3.8 Кб -- 17.01.1997
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9. Untitled Document
... This section covers the use of LASERs at APO regardless of Class or function. ... This plan does not cover aircraft or satellite issues. ... 30.2 APPLICABLE STANDARDS . ... OSHA PUB 8-1.7 Guidelines for LASER Safety and Hazard Assessment . ... The Site Safety Officer shall determine applicable protective measures based on the applicable standards and the LASER Class. ... Laser control and operation shall be in accordance with the applicable requirements of the standards for the specific LASER class....
[ Сохраненная копия ]  Ссылки http://www.apo.nmsu.edu/Site/usersguide/SafetyPlan/06SafeSec30.html -- 2.9 Кб -- 21.05.2009
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