... DENSITY BOUNDING OF GIANT H II REGIONS AND THE IONIZATION OF THE DIFFUSE INTERSTELLAR MEDIUM . ... Three different types of evidence are presented in favour of the hypothesis that the H II regions in disc galaxies with H luminosities greater than a critical value: 10 erg s , are density bounded, and that the escaping Lyman continuum photons from these are the principal ionizing agents for the diffuse ISM in disc galaxies. ... Evidence for density bounding in the most luminous regions . ...

... SMIS ] . PROJECT "FOREST FIRES 96" . ... Moscow . ... Vologda (east part) . ... Komi (north part) . ... Komi (south part) . ... Ural (north part) . ... Ural (south part) . ... Tyumen (north part) . ... Tyumen (south part) . ... Irkutsk . ... Krasnoyarsk (north part) . ... Krasnoyarsk (south part) . ... Irkutsk region (north part) . ... Irkutsk region (west part) . ... Irkutsk region (east part) . ... Chita (north part) . ... Khabarovsk (north part) . ... Sakhalin (north part) . ...

... P2395 Date Received: 2008-Feb-01 14:52:31 Technical Page Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Pulsars Galactic 12.0 Hours 2 hours Mapping Pulsar Emission Regions Using Interstellar Scintillation Locating the pulsar radio emission region is a necessary component to understand the pulsar emission mechanism and coherent emission processes in general. ...

... 2 Columns At the present time, the REGION table is de ned for a two-dimensional space. ... ROTANG (rotation angle): for rotated elements; like X and Y, this column needs to contain vectors of suфcient length. ... Table 1: REGION Table SHAPEs SHAPE X Y R ROTANG Point X Y Circle Xcen Ycen R Ellipse Xcen Ycen Rmaj ; Rmin Angle Annulus Xcen Ycen Rin ; Rout Elliptannulus Xcen Ycen Rinmaj ; Rinmin ; Angin ; Routmaj ; Routmin Angout Box Xcen Ycen Xsize ; Ysize Rotbox Xcen ...

... Pre-university education . ... The certificate obtained by the University proves compliance of the nanosatellite SamSat-218 with safety requirements when performing works on preparation, during the launch and flight of the carrier rocket Soyuz-2.1a . Samara State Aerospace University received such document for the first time in the history of the University. ... The first students nanosatellite SamSat-218 was made by the students and scientists of Samara State Aerospace University. ...

Define region . ... Area/perimeter . Define a region of interest on a graph or graphs. Select the region, there are 5. ... Inside polygon . Points inside a closed, non-intersecting polygon are considered inside the region. ... In the polygonal region type, define the region by successive clicks with the left mouse button, use the right mouse button to register the polygon. ... Select the region to use. ... Click on Area or Perimeter and use the mouse to define the region. ...

We present spatially resolved Spitzer Space Telescope imaging of the supergiant shell region of the M81 group dwarf galaxy IC 2574 obtained as part of the Spitzer Infrared Nearby Galaxies Survey. This region harbors one of the best nearby examples of a kinematically distinct H I shell, with an associated remnant stellar cluster; the shell is initiating sequential star formation as it interacts with the surrounding interstellar medium. ...

... Young super-Jupiter found wandering without a parent . ... Astronomy for Kids . ... Tune into the Asteroid Day press conference . ... Astronomy 101 . ... How can six Trojan asteroids reside in Neptune's L4 region without colliding? ... The gravity of a planet, its star, and the centrifugal force associated with the planetary orbit nearly balance in five regions near the planetт??s path where an asteroid (or spacecraft) could orbit safely. ... Get instant access to subscriber content on Astronomy.com...

The information path to prepare, perform and reduce a radioastronomical observation, using the Arcos correlator , is schematized in the figure: . The programs reside part on the computer network of the Arcetri Observatory, and part at the Medicina Radio Telescope . All programs running at Arcetri are written for a Sun workstation, and are public domain software, available upon request. Programs running at the telescope are written for a PC with DOS/Windows (or Linux).

... 640W A survey of ultracompact (UC) Hii regions has been carried out by searching for 6.669-GHz methanol maser emission from a sample of 535 IRAS-selected candidates. A total of 201 candidates exhibit methanol emission. These sources have been used, in conjunction with previously identified UC Hii regions, to provide a base for further studies of such regions. ... Methanol maser and/or radio continuum emission is found in 364 cases towards IRAS-selected regions. ...

... SOC-SPR-2454. Version 1.44 - 2003-05-03 (UL) ------------ + brought in line with selectlib-4.65 Version 1.43 - 2003-03-13 (UL) ------------ + some transparent gcc-2.95.3 backward-compatibility changes Version 1.42 - 2003-03-05 (UL) ------------ + closed SPR 2403: How to change the ds9 that xmmselect uses Ds9 constructur (used by xmmselect) now makes use of SAS_IMAGEVIEWER environment variable that can also contain an absolute path the ds9 executable ...

The Earth's magnetosphere global structure is conditioned by the interaction of the Solar wind and Earth's magnetic field. ... Solar wind (SW) - the region outside BS; . ... Auroral field lines (AUR) region - the funnel-shape cavity restricted by the geocentric distance of the order of 6 RE, between surfaces formed by magnetic field lines emerged from the polar and equatorial OVAL borders; . ... Fairfield D.H., Average and unusual location of the Earth's magnetopause and bow shock, J. Geophys. ...

... Science User Portal . ... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... Travel to Guesthouse . ... Survey Telescopes . ... This video fades back and forth between views of the stellar nursery Monoceros R2 in visible and infrared light. The visible-light view was created from digitised photographs through red and blue filters forming part of the Digitized Sky Survey 2 (DSS) and the new infrared view comes from the VISTA telescope at Paranal. ...

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Missions Archive . ... News . ... Gala concert was given in the Ice Palace "Arena Mytischi" in honour of the 65th anniversary of S.P. Korolev Rocket-Space Corporation "Energia" foundation. ... A.S. Balashov presented S.P. Korolev RSC Energia team with the Russian Federation President certificate of honour for their great contribution to the development of national human flight cosmonautics and labour achievement reached....

... Sun images . ... Sun flares . ... Active areas . September : 2015 . ... The following regions with sunspots can be now observed on the Sun's surface . Group number . ... Group length (in degrees) . ... Coordinates and other characteristics of active regions are issued for September 09, 2015 00:31 UT The following H-alpha plages without spots can be currently observed on the Sun's surface . ... Coordinates and other characteristics of active regions are issued for September 09, 2015 00:31 UT . ...

... Radiance image in Si iv 1402.8 (top-left, in reversed color table), Doppler velocity image (bottom-left), nonthermal velocity image (bottom-right) and HMI magnetogram (top-right) of region "A". ... The yellow box on the Doppler image outlines the region where anti-parallel flows are seen. ... A cluster of such loops was observed on the solar disk in active region NOAA11934, in the Si iv 1402.8 spectral raster and 1400 slit-jaw (SJ) images. ...

... The Milky Way in the region of the Southern CтАж . ... Title: The Milky Way in the region of the Southern Cross (Crux) and Centaurus rising in the south-east behind the 24-inch dome . ... The Milky Way in the region of the Southern Cross (Crux) and Centaurus rising in the south-east behind the 24-inch dome NOTE: All images are copyright and must not be reproduced or mirrored in any form without written permission. ...

... For reports, received in time (before July 4): on the next week after receiving . For reports, received on July 5-11: during the week August 3-7 . For reports, received on July 12-31: during the period August 10-21 . For reports, received in August: in September . Updated 11.07.2009. Dr. Michael G. Gavrilov, Founding Chairman of the International Astronomy Olympiad, . ... URL: http://www.issp.ac.ru/iao/2009/ . ...

. 1. Move the cursor to the start of the text block you want to define. 2. Type M-space (the META character followed by a space). This sets a 'mark' at the start of the 'region'. 3. Move the cursor to the end of the text block you want to define as the 'region'. This sets the 'point' at the end of the 'region'. You do not have to type anything to set this 'point', the 'point' is the location of the cursor.

... Basic Research results General information Main characteristics of the Radio telescope Observing programs General view of the antenna array Main research areas Principle of generation of radio images Radio telescope's beam Receiving systems Main characteristics of the base receiving-recording complex Calibrations Data archive and databases Publication of data Possibilities of observing the structure and dynamics of microwave activity SSRT - Research results . ...