... The HH flow associated with young stellar object HL Tau has an exciting history and even until now the origin of some its features is not clear yet. ... Knotty structures of Herbig-Haro jets are common phenomena and knowing the origin of such structures is essential for understanding the processes of jet formation. ... In the flow detected compact knots with high (-150 km/s) and bow shape structures in front of those, with low radial velocities (-50 km/s). ...

... Development of Ideas of Structure and Evolution of Stars. Integral Features of Stars, Which Determine Their Structure, Direction and Rate of Evolutuion. ... Connection between Potential and Thermal Energy of Star. ... Structure of a Main Sequence Star. Features of Massive Stars Evolution on the Main Sequence. Internal Structure of the Sun. ... White Dwarfs, Their Features. ... Evolution from the Main Sequence of Massive Stars. ... Evolution of Small Mass Stars till White Dwarfs Sequence. ...

... My thesis aims to understand the energetics and composition of the jet near its origin, and its interaction with the ICM , focusing on detailed models of the inner structure of a spectacular radio source Hydra A. The key features of my modelling are that 1) I identify the four bright knots in the northern jet of Hydra A as biconical reconfinement shocks, which result when an over-pressured jet starts to come into equilibrium whit the galactic ...

Back to Martin Elvis' Home Page . Color 2-D figure of structure (postscript) . 3-D views of the quasar structure: . 3-D Top view 3-D End-on view 3-D Side view . ... Quasar Atmospheres: Toward a `Low' Theory of Quasars , (Elvis M. 2003 astro-ph/0311436 , to be published in AGN and the SDSS, eds. G. Richards and P. Hall) . Talk from the Leicester `Winds Tori' Workshop, Sept 2004 (pdf, 21 pages) . Disk Winds summary from the Leicester `Winds Tori' Workshop, Sept 2004 (pdf, 7 pages) . ...

I'm interested in the structure of interstellar ``clouds'' (filaments, sheets, or whatever) of gas and dust over a wide range of scales, from Galactic spiral arms to AU-scale features -- also how these structures form and interact. ... The possibility of clumpy dust scattering in the Pleiades reflection nebula, which might explain its otherwise surprising UV scattering properties . ... Intricate structure of H I emission and self-absorption in the CGPS . ... Fractal studies of molecular clouds . ...

Statistical methods and HI in the Magellanic Bridge Erik Muller ATNF Preamble Using numerical simulations to assist in the interpretation of observational data. ... Numerical simulations of the Mag. ... Some statistical methods for HI · Spatial Power spectrum (SPS) · Spectral Correlation Function (SCF) The Magellanic System. ... N-Body Numerical simulations High velocity spur SMC LMC SMC Wing Peak intensity, RA-Vel [K] (Bruns 2003 ­ Parkes data only) Some conclusions from SPS 1. ...

... gradients dependencies on solar wind parameters and IMF; . ... fate of thermal plasma at the dayside magnetopause. velocity-dispersed injections of the thermal and superthermal ions from LLBL at cusp and cleft (lowest energy VDIS-2 events); . ... outer cusp processes, role of outer cusp indentation, plasma entry (laminar reconnection, turbulent diffusion, others), role of turbulent boundary layer; . how is the magnetosheath plasma heated near magnetopause and cusp? . ... cusp/cleft wave emissions. ...

Structure and Evolution of Bars and Disks in the GOODS Fields Jogee, S. (STScI), Conselice, C. (CalTech), Ravindranath, S. (STScI), Shlosman, I. (Kentucky), Knapen, J. H ... Lucas, R. A. (STScI), Laine, S. (SIRTF), Hornschemeier, A. (JHU), and the GOODS Team SUMMARY · Non-axisymmetric features (such as bars and spirals ) as well as general triaxialities (such as those of the bulge and halo) drive the dynamical and secular evolution of disk ... An example fit is shown in Fig 3. ...

... Zacharias, N. & Zacharias, M. I. 1999, in ASP Conf. ... The USNO CCD Astrograph Catalog South (UCAC-S) project is a high precision astrometric survey of the entire southern hemisphere for the 7 - 16 magnitude range, aiming at an accuracy of 20 mas for 8-14 m stars. ... The ACT (Urban et al. 1998) and the Hipparcos and Tycho Catalogues (ESA 1997) are used as reference (UCAC-R), supplemented by an extragalactic link program carried out in parallel mainly at the Cerro Tololo (CTIO) 0.9-meter telescope....

... X-Ray Structural Analysis . ... The course introduces the basic principles of diffraction analysis of crystal atomic structure and the basic concepts of state-of-the-art atomic crystallography. ... X-ray crystal diffraction. тАЬGeometricalтАЭ theory of diffraction by three-dimensional scattering center grating. ... Systematic X-ray reflection extinction related to Bravais lattice type, screw axis, glide-reflection planes. €аFourier synthesis as a method of crystal atomic structure analysis. ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2013 May 19 . Earth's Richat Structure . Image Credit: NASA / GSFC / METI / Japan Space Systems , and U.S./Japan ASTER Science Team . Explanation: What on Earth is that? ... Once thought to be an impact crater , the Richat Structure 's flat middle and lack of shock-altered rock indicates otherwise. ... About APOD | ...

This home page belongs to small group of scientists working at . Sternberg Astronomical Institute which is a part of Moscow State University . ... Электронная библиотека научно-технической и художественной литературы (доступна только из ГАИШ) . ... Local staff . Dr. Edward Kononovich (konon -at- sai.msu.ru), Associate Professor . ... Dr. Sergey Ayukov (asv -at- sai.msu.ru), Research Fellow, Webmaster of the group . ... Joint seminar of Solar Studies Structure Group and Solar Photometry Group . ...

... Table data are arranged in columns and rows, and stored in MIDAS files with the extension .tbl . ... An item in a table is accessed by giving its column and row in addition to the table name. The row number can either be given as an absolute value (i.e. the sequence number) or indicated by the value in a previously defined reference column. ... A table can be always expanded in the sense that its number of columns and rows is automatically increased when the allocated space is exceeded. ...

... Tonight's Sky . ... The Magazine . ... Observing . ... Magazine . ... Star Atlas . ... Astronomy for Kids . ... Is there evidence of Oort-Cloud-like structures around other stars? ... We showed that if the solar system is typical, then Oort-Cloud-like structures should commonly exist around other stars. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. February 7, 1998 . COBE Hotspots: The Oldest Structures Known . ... After computer processing to remove contributions from nearby objects and the effects of the earth's motion , the map shows temperature variations in the early Universe as red "spots". These spots are the oldest, most distant structures known. ... About APOD > . ...

Stellarium 0.12.3 . ... Classes . ... Scripting . ... Scripting Engine . ... Script Console . ... Since version 0.10.1, Stellarium includes a scripting feature based on the Qt Scripting Engine . ... Prior to version 0.10.0, Stellarium used a different scripting engine called StratoScript . ... Prior to version 0.10.0, Stellarium had a simple scripting engine, known as StratoScript . ... This script prints "Hello Universe" in the Script Console output window. core.debug( "Hello Universe" ); . ...

... Here some data observed on the 6m telescope with IFP installed in the OLD focal reducer are presented. ... Mkn 3: velocity field . ... NGC 5252: [OIII] image . ... NGC 5252 was observed 23 Feb. 1998 in the [OIII]5007 emission line with CCD TK1024 as detector. ... We observed the ionized gas velocity fields of the spiral galaxies with two purpose. ... Restored velocity field of NGC 157 in the reference frame rotating with the pattern speed overlaid on the Ha image of the galaxy . ... NGC 4100 . ...

. Comment on J0431+2037 . A Gigahertz Peaked Spectrum (GPS) galaxy with complex radio structure on the scale of 10 to 100 mas (combined EVN+MERLIN data at 1.6 GHz, Dallacasa et al. 1995). Our image is consistent with the center-southern features of Dallacasa et al. (1995). The northern feature, ~180 mas N-NW from the field center, outside the boundary of the displayed image, can barely be seen in our data. VLBApls home page . Last modified: 16 Oct 2000

... Just as magnetic storms are composed of substorms, the substorms themselves seem to be composed of smaller scale events. ... steplike expansion of the auroral bulge (Vorobjev and Rezenov, 1973; Sergeev and Yahnin, 1979; Murphree and Cogger, 1992; Nakamura et al., 1993) . ... 1990) . ... fine structure in the bursts of bremsstrahlung X-rays (Lazutin et al., ... Nakamura, R., T. Oguti, T. Yamamoto, and S. Kokubun, Equatorward and poleward expansion of the auroras during auroral substorms, J. Geophys. ...

SINGULAR POINTS IN THE SOLAR CHROMOSPHERE . ... In the structure of the solar chromosphere, containing information on the configuration of the magnetic field, we have found and identified all the main types of the singular points ( see Fig. 1 ), which are known as inherent features of the 2-D vector field. ... The main types of the singular points are the node, the focus, the center, and the saddle. ... Singular point of the focus type in the solar chromosphere. ...