... For SIMS (Secondary Ion Mass Spectrometry) analysis, a solid surface is bombarded by primary ions of some keV energy. ... The subsequent mass analysis of the emitted ions provides detailed information on the elemental and molecular composition of the surface. ... Extremely short ion pulses with a duration below . ... By rastering a fine-focussed ion beam over the surface, like an electron beam in an electron microprobe, mass resolved secondary ion images (chemical maps) can be obtained...

... 2008 October 26 . Massive Stars in Open Cluster Pismis 24 . Credit: NASA , ESA and J. M. ApellАniz ( IAA , Spain) . Explanation: How massive can a normal star be? Estimates made from distance, brightness and standard solar models had given one star in the open cluster Pismis 24 over 200 times the mass of our Sun, making it a record holder. ... Component stars would still remain near 100 solar masses, making them among the more massive stars currently on record. ... About APOD | ...

... Long-Term Observations of the Evolution of the Southern Seasonal Cap of Mars: Neutron Measurements by the HEND Instrument onboard the 2001 Mars Odyssey Spacecraft, M. L. Litvak, I. G. Mitrofanov, A. S. Kozyrev, A. B. Sanin, V. I. Tret’yakov, W. V. Boynton, D. Hamara, and S. Saunders, , Solar System Research, Issue 5, Vol 41, 385, 2007 . ... Comparison between polar regions of Mars from HEND/Odyssey data, Литвак М . ... Исследования Солнечной системы, 2003, т. 37, вып. 5, стр. 378-386. (on Russian) ....

Stellar Clusters are very useful laboratories for empirically studying stellar evolution. ... All cluster stars are at the same distance . All cluster stars have the same physical age . ... CM diagram Young Cluster In this case we see the Main Sequence fully represented. The blue dots represent massive stars with short main sequence lifetimes. ... Thus, identifying the most massive star which is still on the main sequence is an effective means of determining the age of a stellar cluster. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Solar System . ... Planets . ... This bizarrely shrunken planetary system was found by NASAтАЩs Kepler mission, hence the parent star has been named Kepler-11. ... Planetary scientist and Kepler science team member Jack Lissauer said ?These six planets are mixtures of rock and gases, possibly including water.тАЭ €аNone of these strange new worlds are likely to be home to any form of life; their surface conditions are simply too extreme. ...

... As a new Puerto Rican resident, you have a complicated tax status. The short answer for US citizens coming from the US is that you file 1040 claiming all your income for the year you moved, but with form(s) 1116 (credit for foreign tax paid) to reclaim the portion of your Federal tax attributable to income earned (and tax paid) in Puerto Rico. ... Form 1040 and Instructions. ... Publication 514 ``Foreign Tax Credit'', which contains the real instructions for form 1116. ...

... Shustov B.M., Wiebe D.S. Dust expelling from the Galaxy ( abstract from the journal ). Astronomy Reports , 1995, 39 , 578-586 [AZh, 72 , 650-659]. Wiebe D.S., Shematovich V.I., Shustov B.M. Chemical and dynamical evolution of protostellar clouds: initial stages of collapse ( abstract from the journal ). ... Shustov B.M., Wiebe D.S., Tutukov A.V. Evolution of disk galaxies and loss of heavy elements into the intracluster medium. ... ApJ (Letters), 1998, 503 , L71-L74 ( astro-ph/9806155 ). ...

Blackholes Forum Message . ... Post . ... Rest Mass . ... Post Message | ... When the atom was first measured it was assumed to be composed of rest mass. ... The mass due to motion with respect to an observer approaches 0 as the velocity approaches 0. ... If a photon has a zero rest mass and therefore is composed entirely of momentum mass. ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

Scale-heights of the Galactic disk subsytems with different ages and metallicities . V.Marsakov & Yu. ... It is based on the fact, that all stars cross the disk plane several times during their Galactic orbital period. ... We have used our representative sample of nearby disk F2-G2 stars Marsakov & Shevelev (1995) in which fundamental stellar parameters was determined on the basis of published date on uvby-photometry, proper motion and radial velocities. ... Marsakov V.A., Shevelev Yu.G. Bull. ...

... Following several successful moon landings,NASA decided to use its last Saturn V not to fly to the moon but to place in low Earth orbit a large space station, named Skylab. ... It was followed that year by three manned flights using the smaller Saturn IB, each carrying 3 astronauts for a prolonged stay aboard Skylab. ... Mass measurements aboard Skylab were part of the medical experiments conducted there. ... Measuring body mass in the M172 chair (see illustration) was not a simple matter. ...

... Bad Astronomy . ... Bitesize Astronomy . ... The Nine Planets . ... Hey, it's either this or one of those really irritating PayPal donation buttons here. ... I have a snack from April 1998 that gives a brief intro to these peculiar objects , but briefly, brown dwarfs (or BDs for short) are objects that are a little less massive than "normal" stars, but bigger than any planets we currently know about. ... A star forms from a collapsing gas cloud. ... One more point: is a BD a star? ... 2008 Phil...

... BRIEF SCIENCE JUSTIFICATION: Luminous Blue Variable stars (LBVs) represent an extremely rare class of stars that define an important and poorly understood phase in the evolution of the most massive and most luminous stars. ... But there is yet another fundamental problem associated with the post-main-sequence evolution of massive stars. ... The LBV phase may now be the critical phase where most of the star's mass-loss must now occur prior to stars becoming WR stars or exploding as supernovae. ...

... Project page . ... Project workpage . Turbulence in the Multiphase Interstellar Medium . Project I | ... Project highlight | ... Towards simulating turbulence with adaptive meshes . ... A. Kritsuk, P. Padoan, M. Norman . ... A. Kritsuk M. Norman . ... A. Kritsuk, M. Norman, P. Padoan . astro-ph/0411626 | ... P. Padoan, A. Kritsuk, M. Norman, A. Nordlund . ... Introducing Enzo, an AMR Cosmology Application . B. O'Shea, G. Bryan, J. Bordner, M. Norman, T. Abel, R. Harkness, A. Kritsuk . ...

... Author Info : Still breathing, somehow. ... Additional Credits to : Rich Sham - Playtester of legend Ty Halderman - of cdrom.com fame здддддддддддддддддддддддддддддддддддддддддддддддддддддддддддддддддддддддддддддї Ё PLAY INFORMATION Ё юддддддддддддддддддддддддддддддддддддддддддддддддддддддддддддддддддддддддддддды Map # : 1 Single Player : Yes - it'll be bloody Cooperative 2-4 Player : Yes - Excellent WAD for COOP! ... Feel free to Email the author concerning this level. ...

... Samara State Aerospace University Students life Student clubs . Samara State Aerospace University provides a large number of students associations, clubs, sections and project groups. ... There is student press center at Samara State Aerospace University which includes: Kakovkin Illuminator photo club, Bort 3 video log, a journalists club and a students' radio station. ... Samara State Aerospace University also runs a students' volunteer center. ... Sputnik International Student Club . ...

... Phase light curves of binary model that consists of a primary component with mass M 1 and a secondary component with mass M 2 . ... The input parameters of the problem are the accretion rate onto the binary components ( ), the component mass ratio q = M 2 /M 1 , the orbital inclination to the line of sight , the eccentricity e, the rotation angle of the apsidal line relative to the observer , and the parameter c characterizing viscosity. ...

... Удивите ваших близких таким неожиданным и интересным подарком, ведь необычные подарки покоряют с первого взгляда. ' title=' Светильник подвесной MARIMI pendant nickel 5x20W 230V Massive 40655/17/10 - MassiveСветильник подвесной MARIMI pendant nickel 5x20W 230V Massive 40655/17/10' border='0' align='left' width='120' style='margin-right: 20px;' hspace='7' vspace='5'/> . ...

... MAO main . ... Free publication "Who are the champions in Horizon 2020". Download the epublication at http://ow.ly/PA6PO, @Horizon2020, #horizon2020 . ... В?д: "Horizon 2020, Framework Programme for Research and Innovation Group" . ... Тема: Free publication "Who are the champions in Horizon 2020". Download the epublication at ow.ly/PA6PO , @Horizon2020, #horizon2020 . ... Title: Free publication "Who are the champions in Horizon 2020". ...

O ptimal transport : T heory and A pplications . ... Home Research Publications Software Rencontres People Links . Laboratoire J.-V. Poncelet coordinates the OTARIE project. Address : the Independent University of Moscow , . ... Andrei Sobolevskii ( project coordinator ): senior research associate . Email: . ... Address : Universit de Paris-Dauphine , . ... Julie Delon : charg e de recherches CNRS . ... Michel H non: directeur de recherches CNRS m r. Email: . ...

GCVS Research Group: . Recent publications . Kazarovets E.V., Samus N.N., Durlevich O.V., Kireeva N.N., Pastukhova E.N., The 81st Name-List of Variable Stars. ... Kazarovets E.V., Samus N.N., Durlevich O.V., Kireeva N.N., Pastukhova E.N., The 80th Name-List of Variable Stars. ... Samus N.N., Kazarovets E.V., Kireeva N.N., Pastukhova E.N., Durlevich O.V. General Catalogue of Variable Stars: Current status and new Name-lists Odessa Astronomical Publications, 2010, V. 23, p. 102-105. ...