All stars derive their energy through the thermonuclear fusion of light elements in to heavy elements. High temperatures are required so that the mutual electrostatic repulsion of the protons in each fusing atomic nucleus is overcome. ... Elements with more protons in their nuclei require higher temperatures. ... This sequence is now shown in the animation below. ... First Step of the Proton-Proton Chain Narration . Second Step of the Proton-Proton Chain Narration . ...

Astronomy Picture of the Day . A Mercury Transit Sequence . ... 27.05.2003 . ... Credit: Dominique Dierick Explanation: Earlier this month, the planet Mercury crossed the face of the Sun, as seen from Earth . Because the plane of Mercury's orbit is not exactly coincident with the plane of Earth's orbit , Mercury usually appears to pass over or under the Sun. ... May 2003 . ... Publications with keywords: Mercury - Sun - transit . Publications with words: Mercury - Sun - transit . ...

... 2003 May 27 . A Mercury Transit Sequence . ... Explanation: Earlier this month, the planet Mercury crossed the face of the Sun , as seen from Earth . Because the plane of Mercury's orbit is not exactly coincident with the plane of Earth's orbit , Mercury usually appears to pass over or under the Sun. ... The north pole of the Sun, the Earth , Mercury's orbit, although all different, all occur in directions slightly above the left of the image. ... About APOD | ... NASA Official: Jay Norris. ...

... MAYER{VIETORIS SEQUENCE TOPOLOGY-2, FALL 2012 The following is for the students who solved Problem 4.2 (the Bockstein's exact sequence) or are ready to believe its statement. ... The corresponding exact sequence of cell homology (see Problem 4.2) is called the Mayer{Vietoris sequence. ... Problem 3*. (a) Prove that the inclusion : C A;B (X ) C (X ) is a morphism of complexes, and is trivial on homology | ... The - corresponding exact sequence of singular homology is called the Mayer{Vietoris...

... Once the engineering data are dumped from the SSR it will be easier for the GSFC/LMSC engineering staff to reconstruct the exact sequence of events. Based on the reported error messages, it appears that two of the four magnetic torquing bars were found by the safing system to be out of limits for two successive one minute periods. ... In any case, until the engineering data are down it will be hard to determine why two bars might have the problem simultaneously. ...

... Classes . ... casa . casa::ObjectID . ... More... #include < ObjectID.h > . ... ObjectID ( Bool makeNull= False ) . ... ObjectID ( Int sequence, Int pid, Int time, const String &hostname) . ... const String & . ... Extract objectID strings (as set by glish script substitute.g) from a command, convert them to ObjectID objects, store those in the Block , and replace the strings by their Block indices as $OBJ::n::O where n is the index. static Int . ... const String & casa::ObjectID::hostName . ...

... Simulation Images . Simulations of convection in stars . Vertical cross-section of an A9 main sequenceтАж . Sidebar Left . Sidebar Top . ... Title: Vertical cross-section of an A9 main sequence star . Description: This is a vertical cross-section through a snapshot of a simulation of an A9 main sequence star. ... The longest arrows correspond to the highest velocities of about 29 km/s. The up-flow enters from the bottom of the simulation, bringing up hot plasma from the interior. ...

Name Last modified Size Description . Parent Directory - aligned_sequence.tif 2012-10-16 13:01 19M edited_aligned_sequence.tif 2012-10-16 13:21 14M edited_aligned_sequence_animated.gif 2012-10-16 13:21 1.7M fits/ 2012-10-16 16:48 - fits_cropped/ 2012-10-16 14:49 - rotated_edited_aligned_sequence.gif 2012-10-16 13:34 1.7M rotated_edited_aligned_sequence.tif 2012-10-16 13:34 14M uranus.xls 2012-10-16 16:49 9.0K . Apache/2.4.6 (Linux/SUSE) Server at www.astro.louisville.edu Port 80

Next: Roche lobe overflow (stage Up: Principal Evolutionary States of Previous: Main-sequence stars (stage I) . ... The duration of this stage for a binary component is no longer a function of the stellar mass alone (as in the case of single stars), but also depends on the initial binary type (A, B or C) (Iben and Tutukov, 1985, 1987[ 74 , 75 ]): . The radius of the post-MS star rapidly increases (on a thermal time-scale)   and reaches characteristic giant values. ...

Next: Observing the Old-Fashioned Way (Gui-Free Observations) Up: Spectral Line Appendices Previous: OLD Basic Analyz Routines For use with data taken BEFORE March 6, 2000 . This appendix contains example analyz sequences used to look at HI spectra. ... Additionally, if you have not run analyz before, instruction (2) should read: If you have not, instruction (3) should read: . ... 7) redln < rec < n : This first stores the individual ON/OFF - 1 data dumps into registers 100 - 100+ - 1. ...

Radiotekhnika i elektronika, 1998, vol. ... Transmission of Chaotic Sample Sequences Through RF Channel . ... Received January 29, 1998 . ... The following set of operations is proposed for this purpose: transformation of the chaotic sample sequence into a sequence of AM pulses, modulation of high-frequency carrier by this signal, filtering out the high-frequency signal, demodulating it into a sequence of pulses, and retrieving estimates of the sequence of the chaotic samples. ...

... Southern . ... Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: Discovery and characterisation of Pre Main Sequence stars in southern star forming regions . ... Observing with ESO Telescopes . ... ESO-MIDAS . ... Using a robust method to identify Pre-Main Sequence (PMS) stars through their photometric excess in the Hн± band, we have recently studied the star formation history in several star burst clusters in the Galaxy, Small and Large Magellanic Clouds. ...

The HyperNews Linux KHG Discussion Pages . Forum: The Linux Kernel Hackers' Guide . Keywords: Virtual Memory, page access . ... Does anyone know how one can keep track of VM page access sequence numbers of some application programs? One way I thought was to mark each virtual page as protected at allocation time, so an access to such a page will result a page fault, which is much easier to record. However, I couldn't find any kernel functions that will lock only one virtual page. ...

... Thanks for downloading DEMONS.ZIP, which contains the following MIDI files: 1) DEMON21T.MID - This is the "21-track" version of DEMONS. This composition contains numerous patch changes which are embedded in various tracks. For those of you who like to assign your own sounds to MIDI tracks, DEMON21T allows you to do this with minimal hassle, because they're split out allowing you to easily find the patch changes. ... 2) DEMON16T.MID - This is the "16-track" version of DEMONS. ...

Next: e-Science Up: C.S. Jeffery, Research Astronomer Previous: Post-AGB Stars . ... Simon Jeffery and Myron Smith (Space Telescope Science Institute, Baltimore, USA) have continued to study the physics of surface oscillations in the Cepheid star BWVul. They are investigating empirically how a shock wave can affect the temperature and density structure of a stellar atmosphere as it passes through. M.E. Bailey . 2004-05-18 ...

... A complication to transforming from CHIPCOORD to sky coordinates is that the spacecraft attitude is never completely fixed, thus the exact transform varies with time. ... Each chip image is subjected to multiple transforms, one per attitude bin; the output image consists of a weighted sum of these transformed images, the weights being proportional to the duration of each attitude bin (but see also section 3.2 below). ... It may for example be unwise to make OOTE sky maps this way. ...

Do everything from Perl (requires PDL) # use strict; use PDL; use Inline SLang = 'require ( sherpa );'; print Now in perl\n ; # The sin(x) term is just to make sure the values # do not exactly match a polynomial. # print Setting up a model \n ; my $x = 0.1 * (1+2*sequence(40)); my $y = -10.5 - 2.5 * $x + 4 * $x**2 + sin($x); my $e = abs($y) * 0.1 ; set_axes (1,$x); set_data (1,$y); set_errors (1,$e); ...

Next: NICMOS/HST H-band (F160W) Images Up: NICMOS Science Previous: HST NICMOS Observations of . ... Observations of P . ... The NICMOS team has devised a comprehensive program of observations of the Galactic Center. ... Data in hand give a first look at variability and a detailed look at the search for the tip of the main sequence will be discussed where NICMOS has demonstrated adequate sensitivity and photometric precision to identify likely O8-B1 stars at the Galactic Center. ...

Next: Outputs Up: Fitting of Data Previous: External Functions . ... EDIT/FIT fitname . SET/FIT options . ... The commands have been designed so that defaults exists for almost all the parameters, (see description in Volume C of the MIDAS User Guide). ... The MIDAS command SET/FIT is used to specify the different options of the FIT command, for instance the method to be applied or the type of used functions. The instruction SET/FIT METHOD=CGNND PRINT=1 WEIGHT=S FUNCT=BLACBODY FCTDEF=USER . ...

This describes the exposure window used by each instrument (the graphical interface for the hub's expose command). ... To open the expose window for a given instrument, bring up that instrument's main window, then press the Expose... button along the bottom. ... The top panel shows the status of the current exposure sequence (regardless of who started it). ... File: the file name for the current exposure, or the most recent exposure if not exposing. ... Download: exposure download preferences. ...