... Future seminars . P a s t seminars . Seminar council . Collective processes and structures in spiral galaxies " . ... A new approach to studying global structures in thin stellar disks, which allows to describe universally both bar and spiral modes, is presented. ... Study of line-of sight velocity maps of gaseous disk in spiral galaxies allows, under some conditions, to reconstruct 3 components of gas velocity in the galactic plane. ...

... Line radiative transfer in C 18 O, HCO + , and CS lines is considered in a spherically symmetric chemo-dynamical model of a starless core, evolution of which is driven by the ambipolar diffusion. Theoretical line profiles are compared to observational data on the well-known L1544 core, which is one of possible candidates for collapsing protostellar clouds. ... Comparison between modelled and observed spectra suggests that L1544 has flattened structure and is observed at some inclination. ...

. INTERBALL AURORAL KEY PARAMETERS AVAILABILITY . Intervals of available data are coded by blue color. To read availability charts user should know the descriptor ("name") of the KP subset of interest. Table annotations include also number of version for each subset. Plot resolution is exactly one pixel per hour. Data are considered as available if at least one data point is present during that hour.

... user-defined data file formats . ... better integration with a user's analysis routines To add such functionality to SAOimage, we developed the XPA Messaging System that allows X programs to define points of public access through which data and commands can be exchanged with external programs. ... We have utilized XPA to develop "SAOimage: The Next Generation" (SAOtng), an extensible image display service that can cooperate with other processes and programs. ... SAOtng help pages . ...

A High School Curriculum in Astrobiology . Astrobiology is a truly integrated science. For example, when extreme environments of Earth are examined as a springboard to the search for life in the Solar System, other subjects?the biology of microorganisms, the chemistry of nutrients, the process of respiration, and the nature of autotrophic habitats?are intimately entwined and must be considered in one breath, albeit a long one. ...

... Status of the numerical solutions and validation 2. ... Coupling of "solid" Earth components, e.g. core ­ mantle (Dehant et al.) ... Consistent relativistic formulation of Earth rotation (Gerlach, Klioner, Soffel) Status of the numerical solutions - 2 · The results from numerical solutions suffer from ­ Simplified solid Earth models ­ Incomplete Earth system models or neglecting of certain parts or neglecting of certain coupling mechanisms ­ Methodological limitations of computations...

... Steven L. Smith . NASA International Space Station Program Liaison to the European Space Agency . ... SPECIAL HONORS: NASA Distinguished Service Medals (two), NASA Outstanding Leadership Medal, NASA Space Flight Medal, NASA Exceptional Service Medal, IBM Outstanding Technical Achievement Award and IBM Outstanding Community Service Award. ... NASA EXPERIENCE: Smith is a veteran of four space flights covering 16 million miles and seven space walks totaling 49 hours and 25 minutes. ... DECEMBER 2013 ...

Astronomy Picture of the Day . A Twisted Meteor Trail Over Tenerife . ... 2.06.2010 . ... Credit: Juergen Rendtel ( AIP Potsdam ), IMO Explanation: Did this meteor take a twisting path? ... Meteors, usually sand sized grains that originate in comets, will typically disintegrate as they enter the Earth's atmosphere . A fast moving meteor ionizes molecules in the Earth's atmosphere that subsequently glow when they reacquire electrons . ... June 2010 . ... Publications with keywords: meteor . ...

... Space flight . ... Space Hotel . ... The program of deployment of small orbital station (SOS) consisting of a family of spacecrafts and module-spacecrafts represents a consecutive realization of flight scenarios with consecutive building up of functions. ... Scenario 1 - the regular and revised spacecrafts of class "Soyuz" - TMSC and MNMSC (MNMSC-cargo, MNMSC-MR) are used, pls. see fig fig.8 . ... The terms of transition to this scenario are determined by terms of readiness of one or another module....

... stars . ... Could gas giants be considered stars that failed to ignite? ... The distinction between gas giant planets and brown dwarfs ("failed stars") is a vague one. ... It depends on what gas giant youт??re looking at and how you distinguish a т??planetт?? from a т??failed star.т?? A gas giant found in orbit around a star might be considered a planet like Jupiter around the Sun. An isolated gas giant is probably a failed star. ... Get instant access to subscriber content on Astronomy.com! ...

... Appropriate values of DIT the integration time (DIT secs) for each individual integration, are lmited by various considerations. N.B. Ndit individual Integration s each of DIT secs are coadded to form a single Exposure of time Ndit*DIT]. The recommended minimum DIT is one sec (the minimum possible exposure time) or the value at which the noise becomes sky (rather than detector) limited. ... The recommended maximum DIT is such as to keep the detector wells less than half full. ... 40 sec . ...

... Torgashin Kotel'nilov Institute of Radio Engineering and Electronics, Russian Academy of Science, Mokhovaya 11, 125009, Moscow, Russia A Superconducting Integrated Receiver (SIR) [1, 2] was proposed more than 10 years ago and has since then been developed for practical applications [3]. ... In particular we have developed integrated receiver for novel balloon borne instrument TELIS (TErahertz and submillimeter LImb Sounder) [6, 7]. ... The SIR for TELIS covers frequency range 450 -650 GHz. ...

... Luminosity (L) · · · · A source's luminosity is the power that it emits in radiation. ... NB Astronomers often say `flux' when they mean `flux density' · SI units are Wm-2Hz -1 -26 filter · Also used are Jy 10 Wm-2Hz -1 E= РРРF d dA dt Specific Intensity, Surface Brightness (I) · Specific intensity (or surface brightness) is the power received (or emitted) per unit area per unit frequency per unit solid angle. ч F at surface of a spherical source = I · · Specific intensity is independent of distance...

... 2) Osservatorio Astrofisico di Arcetri, Largo E.Fermi 5, 50125 Firenze, Italy We present some results about the use of an engineering grade NICMOS3 array for medium resolution spectroscopy. ... The characterization of the array consisted of evaluating the bad pixels percentage, the read out noise and the dark current rate. We acquired dark and flatfield frames, the former without any illumination of the detector and the latter with the uniform illumination of a led diode inside the dewar. ...

... A curve of radius R is banked at an angle of to the horizontal. A car of mass M negotiates the curve at a speed v without skidding. Draw a free-body diagram appropriate to this situation (2 marks) . Determine in terms of R, , g, M and v, the normal force on the tires exerted by the road (3 marks) . ... Determine the frictional force exerted by the road on the tires of the car. (3 marks) . Determine the minimum coefficient of static friction between the road and tires. (3 marks) . ...

... Examples are voltage-divider steps used to vary the gains of amplifiers; switch-selected capacitors used in charge-integration systems; and pre-scalers sometimes used to extend the dynamic range of counting systems. ... This is handled by having up to three columns containing the gain codes; these codes may actually be strings representing the approximate values in magnitudes, or other convenient labels, such as switch positions recorded in the raw data stream. ...

... Ham packet radio system including: . ... control computer RSC 2. dedicated software monitoring generation of probing pulses in onboard transceiver in radio beacon mode; . ground receiving network of ham radio packet communication to record probing pulses of onboard radio beacon; . ... Generation of onboard radio beacon probing pulses as time marks to ground receiving network (including ham radio receivers of USW) and transmission of the measurement results throughout Internet network. ...

University Satellites and . Space Science Education . ... LIFE OF THE EARTH IN THE SOLAR ATMOSPHERE (multimedia manual) . ... The purpose of this manual is to illustrate the major physical processes occurring in the Sun - Earth system and ecology of the planet life. The material includes three individual parts: "The Earth", "The Sun" and "The solar-terrestrial connections". ... Skobeltsyn Institute of Nuclear Physics, Moscow State University, 2005-2006 . ...

... GUI­fying and Documenting your Shell Script Peter. ... We describe a simple method to annotate shell scripts and have a preprocessor extract a set of variables, present them to the user in a GUI (using Tcl/Tk) with context sensitive help, and run the script. ... Tcl/Tk: TkRun The GUI that is created will provide a simple interface to a program that is spawned by the GUI. ... Sample Script: testscript Here is an example header from a C­shell script with which Figure 1 was made. ...

Next: Mission Element Points-of-Contact . Previous: Mission Operations Data Transfer . ... Each mission element should ensure that their contact information remains current and notify the RSOG of any changes. ... Non-RSOG mission elements will also use the "dit" list to notify the RSOG (and all other mission elements) of unexpected events that may impact operations elsewhere, e.g., if a tracking station discovers that the spacecraft is in an unexpected configuration. ...