... It has been largely superceded by MatWeb . Conversion Factors . Material properties . Physical constants . Astronomical constants . This table gives conversion factors to convert various units to their SI equivalents. ... The units are SI. This is a short list of physical constants in SI units. ... Boltzmann constant . ... Gas constant . ... Mass . ... Plank's . ... Radiation constant . ... This is a short list of astronomical constants in SI units. ... Sun . ...

We present ~kiloparsec spatial resolution maps of the CO-to-H2 conversion factor (ЮБCO) and dust-to-gas ratio (DGR) in 26 nearby, star-forming galaxies. We have simultaneously solved for ЮБCO and the DGR by assuming that the DGR is approximately constant on kiloparsec scales. ... In total, we derive 782 individual solutions for ЮБCO and the DGR. ... However, most galaxies exhibit a lower ЮБCO value in the central kiloparsecт??a factor of ~2 below the galaxy mean, on average. ...

... To convert measurements in Kelvin to Jy (and vice versa) the global function convert_flux is needed. ... The function knows the basic parameters for some frequencies and telescopes, but the user may need to supply the aperture efficiency, telescope diameter or the Jy/K factor. ASAP> scans.convert_flux # If efficency known ASAP> scans.convert_flux(eta=0.48) # If telescope diameter known ASAP> scans.convert_flux(eta=0.48,d=35) # Unknown telescope ASAP> scans.convert_flux(jypk=15) # Alternative . ...

... Avg: the average value of the spectra (maybe throwing out some channels at the edges). <>:average over the spectra (throwing out points at the edges if you want). gCal(f) :- frequency dependence of the tabulated cal values. ... calInK(Avg): Scaler cal value averaged over the band. calOffSpc(Avg): cal off value averaged over the band (in spectrometer counts) . ... cntsToK(avg) = calInK(Avg) / (calDif_cnts(Avg)) . To convert a spectrum b_cnts in spectrometer counts to b_K in Kelvins using cntsToK: . ...

... If you have a program to convert data to MIDAS input format, fine. ... All you need to do is cannibalize the part of the existing program that reads the data, and add a short piece of code to re-format the data first as a flat ASCII file, one measurement per line; and then convert this to *.tbl format. ... It's just like the process of creating a program-star table. ... You may decide to write a short MIDAS script to apply your format-conversion program and the edited *.fmt file to each night's data...

. XMM-Newton Science Analysis System . ssclib (ssclib-3.33.4) [xmmsas_20080701_1801-8.0.0] . Meta Index / Home Page / A module which contains / Constants . Name . Value . Description . ErgToeV . 1.0d-7 / ElectronQ . erg to eV . ErgTokeV . ErgToeV /1000.0 . erg to keV . eVToErg . 1.0/ ErgToev . eV to ergs . keVToErg . 1000.0/ ErgToev . keV to ergs . XMM-Newton SOC/SSC -- 2008-07-01

... The simplest way to convert PostScript files into PDF on our Linux machines is to use the ps2pdf command, e.g. ps2pdf file.ps file.pdf . ... If all original files contain only one page then the resulting PDF document would have have one page for each file. ... Step: Add a pdfmark operator in the set-up section so that the list of bookmarks in the resulting PDF document is visible on the left hand side when the file is opened: . ... where bookmark_file is an ASCII file containing the pdfmark...

Next: Directory Manipulation Up: C Standard Library Functions Previous: Character Classification and Conversion . ... double atof( char * string ) - Convert string to floating point value . int atoi( char * string ) - Convert string to an integer value . int atol( char * string ) - Convert string to a long integer value . char *itoa( int value , char * string , int radix ) - Convert an integer value to a string using given ...