... 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. ...

Next: Hierarchical Wiener filtering Up: Noise reduction from Previous: The convolution from . Let us consider a measured wavelet coefficient at the scale i . We assume that its value, at a given scale and a given position, results from a noisy process, with a Gaussian distribution with a mathematical expectation , and a standard deviation : . ... We get: . ... This is done from the study of the variation of the noise between two scales, with an hypothesis of a white gaussian noise; . ...

... Classes . ... casa::Aberration . ... More... #include < Aberration.h > . ... Aberration (const Aberration &other) . ... operator() ( Double epoch) . ... Actual Aberration for a certain Epoch is calculated by the () operator as Aberration(epoch), with epoch Double MJD, values returned as an MVPosition . ... Double casa::Aberration::aval [3] [private] . ... Double casa::Aberration::checkEpoch [private] . ... Double casa::Aberration::dval [3] [private] . ... const Double casa::Aberration::INTV [static]...

Following are instructions to build and install the programs in this distribution. Make sure that you have all necessary tools for building executables. ... The automatic build process expects a configuration file called Config.local . ... The configuration file specifies the directory in which to install the binaries, as well as control over the generation of debugging code and reference clock support. ... Cleans out object files, programs and temporary files. make distclean . ...

... The pinhole simulation program is a computationally and memory intensive task. ... A parallel version was developed instead, to enable distributed processing on a cluster of workstations. The program makes use of the Message Passing Interface (MPI) standard for parallel processing, implemented as an API (Application Programming Interface) to the Local Area Multicomputer (LAM) programming environment developed at the Ohio Supercomputer Center. ...

Next: Definition of Scientific Misconduct Up: scientific Previous: Introduction . ... This Code of Good Practice closely follows the Statement on Safeguarding Good Scientific Practice issued by the Biotechnology and Biological Sciences Research Council (BBSRC) in 1998. ... The Observatory expects the highest standards of scientific integrity to be adhered to by the researchers, students and other staff that it funds, whether they are employees or associates of other institutions. ...

XMM­Newton CCF Release Note XMM­CCF­REL­no­number­assigned EPIC Spectral Response Distribution R. D. Saxton 27 Feb 2002 1 CCF components Name of CCF VALDATE CAL VERSION XSCS flag EMOS1 QUANTUMEF 0010.CCF 2000­01­01 NO EMOS2 QUANTUMEF 0010.CCF 2000­01­01 NO EPN QUANTUMEF 0010.CCF 2000­01­01 NO 2 Changes Four new extensions, FRACTION CHANNEL, FRACTION ENERGY, QE TOTAL and EBINS FRACTION have been added. ... EBINS FRACTION ENERGY: The energies used to define the QE TOTAL array. ...

Next: Infrared Data Up: Contents Previous: Optical Photometry . ... For example, one method is to derive the spectral energy distribution (SED) for a target star and compare it to the SED of a dereddened standard star. ... Temperature can be determine via the B - V color (Gilliland 1985): . ... The results produced small extinctions to the background stars of between A and A . ... The most accurate extinction calculation requires both IR and spectral data. Infrared Data . Spectroscopic Data . ...