Next: Transparency of the Stochastic Up: Model of the Galaxy Previous: Frequency distribution of galactic . ... The parameters of the model resulted from a numerical fitting of various data, such as the observed distribution of the young star population and neutral hydrogen, the density of population II stars in the vicinity of the Sun, the galactic rotation curve and the dynamics and distribution of globular clusters   and dwarf irregular satellites of the Galaxy. ...

... FTP access the basic models is here . ... Below, we put short descriptions of the used SED models for the photometric redshifts providing by the current server . ... The uniqueness of this model consists in expanding to the near IR (NIR) of Rocca-Volmerange and Guiderdoni's (1988) atlas of synthetic spectra with a revised stellar library, which includes parameters of cool stars. ... Homepage of the GISSEL model). ... Another model used earlier is the model of synthetic spectra of Poggianti (1997). ...

... We find a transition of LBV star from the LBV instability strip to the region of classical WN for the first time. ... Numerical modeling of the atmospheres of these objects are very important for understanding the evolutionary relationship WR and LBV stars, as well as of the physical causes of LBVs variability. We studied spectra of two very luminous stars in the M33 galaxy - LBV V532 and late WN star FSZ35. ... Bottom: The spectrum of FSZ35 with the final model . ...

... Research . ... Laboratory . Main results . ... webmaster@izmiran.ru . The main results of the research are: . From the Cosmos-1809, Intercosmos-19 and Cosmos-900 satellite data the ring ionospheric trough, RIT, associated with the ring magnetospheric current and SAR-arcs was revealed and its characteristic were in detail investigated. ... C) 2007, IZMIRAN ...

... 87a100np-abp.gif and 87a100np-abp.ps - ut87a100np (solid) and ut87a100abp (dashed, opacity as absorption), scat=true, A . 87a100np-npa.gif and 87a100np-npa.ps - ut87a100np (solid) and ut87a100npa (dashed, scat=false) A . ... e87anp-npa-abp.gif and e87anp-npa-abp.ps - early light curves for ut87a100np,ut87a100npa and ut87a100abp, data from Shelton and Lapasset, 1993 . ... 100np-curves.gif and 100np-curves.ps - light curves for ut87a100np (scat=true) and ut87a100npa (scat=false) . ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... galaxies . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Dave's Universe . ... Inside the cyclic model of the universe . ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

THE PARAMETERS INVOLVED IN HAPKE'S MODEL FOR ESTIMATION OF THE COMPOSITION OF THE EJECTA LUNAR TERRAINS. ... In the previous papers we were estimated the surface roughness of the ejecta lunar terrains by means comparison of the local phase function and the average integrated lunar indicatrix. ... The Hapke's theoretical model of the lunar surface reflection. ... For THE PARAMETERS INVOLVED IN HAPKE'S MODEL: S.G. Pugacheva, V.V. Shevchenko a low-albedo lunar surface parameter Bo = 1. ...

Blackholes Forum Message . ... Quicksand As Black Hole Model? ... For the hole to be black it must have a fuzzy edge i.e. something one is sinking into (like a black hole is like quicksand that you discover by sinking partly into it?) ... A number of oranges "probes" what it is to be an orange so "black hole" = "number" you might suppose. ... The rest of their body not in the quicksand (i.e. not in the black hole) equates to the "collection of anti-matter near the blackhole"? ... www.astronomy.net . ...

Cost Estimating Web Site . ... 2005 NASA Cost Analysis Symposium Databases . ... World , European Communities , Other European Countries , Americas , Asia , Africa , General US , US Federal Government , US Department of Defense , Aerospace Industry , NASA , Science & Engineering Handbooks . NASA Cost Estimating Handbook 2004 , Parametric Estimating Handbook .. ... Consumer Price Index , Employment Cost Index , GDP Deflator , Import Price Index , NASA New Start Index , Producer Price Index . ...

Spectropolarimetry and modeling of Galactic Wolf-Rayet star WR156 O LGA M A RY E VA Special Astrophysical Observatory RAS; olga.maryeva@gmail.com For the first time spectropolarimetric observations of Wolf-Rayet star WR156 (WN8h sub-class) were conducted. ... This polarization is, most probably, has an interstellar origin, as its magnitude and orientation are similar to the ones of field stars. ... By its parameters WR156 is similar to other WN8h stars, displaying the line effect. ...

... Dark Matter Ring Modeled around Galaxy Cluster CL0024 17 . ... A new observation of gravitationally magnified faint galaxies far in the distance behind a massive cluster of galaxies is shedding new dark on the subject. ... A hypothesis for the formation of the huge dark matter ring holds that it is a transient feature formed when galaxy cluster CL0024+17 collided with another cluster of galaxies about one billion years ago, leaving a ring similar to when a rock is thrown in a pond. ...

... Bad Astronomy . Misconceptions . ... Bad Astronomy : The Moon only shows one face to us because it is not rotating. Better astronomy : The Moon only shows one face because it is rotating, once every time it revolves around the Earth. ... Place the Moon model on the table about 30 centimeters (one foot) away with the X facing the Earth model. ... You'll see that to keep the X facing the Earth model, you have to rotate the Moon model as it goes around the Earth model . ... 2008 Phil Plait. ...

... Solar Flare Observations Using the X-ray Telescope on Hinode . ... The satellite Hinode (Solar-B), Japanese for sunrise, was launched in September 2006 on a mission to study the Sun, specifically, sunspots which give rise to powerful flares and solar storms. The origin of solar flares is a mystery scientists hope Hinode will help unravel. ... What drives solar flares and creates the Sun’s magnetic fields? ... 2017 Total Solar Eclipse . Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

. -!> download . Left: Consequtive explosion of 20 supernovae during 30 Myr. Right: Single hypernova (GRB) explosion with the total energy equivalent to 20 supernovae. The simulation was performed using a 2D Eulerian hydro code. The animation was done using IDL. -!>

The multiscale analysis of heterogeneous structures is actually an important and effective tool of mathematical modeling in physics, technique and biology. ... The special year will extend the existing cooperation between French and Russian researchers in the multiscale analysis and in mathematical modeling in hemodynamics, taking into consideration the mass transport, coagulation, fluid-structure interaction and other aspects. ...

. This Directory contains Model of distribution of density, temperature and effective collision freguency of electrons. Yu.K.Chasovitin. 1998. This Directory contains The program RIM98 for calculating the parameters of the ionosphere to use the "Reference Ionospheric Model-98" (RIM-98).Yu.K.Chasovitin. 1998.

... Aims: Today, large ground-based instruments, like VISIR on the VLT, providing diffraction-limited (about 0.3 arcsec) images in the mid-infrared where strong PAH features appear enable us to see the flaring structure of the disks around Herbig Ae stars. Although great progress has been made in modelling the disk with radiative transfer models able to reproduce the spectral energy distribution (SED) of Herbig Ae stars, the constraints brought by images have not been yet fully exploited. ...

... Numerical Modeling of RadioAstron SRT Temperature Deformations M. Yu. Arkhipov, I. S. Vinogradov, S. B. Novikov, and S. D. Fedorchuk Astro Space Center, Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia e mail: rusengineer@mail.ru Received December 16, 2013 Abstract--The results of modeling the thermal deformations of a space radio telescope's reflecting surface are presented in the paper. ...

... Field of interest: data analysis and interpretation of X-ray observations of BHC and NS systems, astrophysics of compact objects and related phenomena: X-ray , optical and radio observations , shocks and stellar winds, emission mechanism, the spectral and timing analysis of the X-ray emission from microquasars ( signature of accreting BH), atoll- and Z-sources ( signature of accreting NS), modeling of INTEGRAL images % . ...

CURRENT SHEET ENERGETICS, FLARE EMISSIONS, AND ENERGY PARTITION IN | SIMULATED AND OBSERVED SOLAR ERUPTIONS | ... We investigate coronal energy flow during a simulated coronal mass | ejection (CME), and compare observable characteristics of the simulation| |to observed eruptions. ... in the energy equation. ... flowing out the sides of the current sheet, the energy flowing out the | lower tip of the current sheet, and the energy flowing out the upper tip| |of the current sheet. ...