... Захаров А. Ф. It is generally accepted now that there is a supermassive black hole at the Galactic Center. ... Observations of trajectories of bright stars at the Galactic Center in IR band have been done with an enormous precision. ... We review theoretical studies and their links with observations to get constraints on parameters of the Galactic Center potential and as a result to evaluate parameters of the black hole and distributions of stellar cluster and dark matter near the black hole. ...
. Red histogram is 2dF QSO Redshift Survey . Blue histogram is Durham/AAT QSO Survey . | Front page | . | << - Number Counts | . Robert J. Smith, ">rsmith@mso.anu.edu.au Last modified: Fri Sep 24 11:39:02 EST 1999 .
... 0,50-0,59 (0,50-0,59) µm . ... Swath Width . ... at end of visibilty area . ... Visibility Area Width . ... Ground Resoultion in Nadir: . along swath . ... across swath . ... Ground Resolution at End of Visibilty Area: . ... 200 lines per second . ... at least 200 . Ground resolution corresponds to normal flihgt altitude 650 km. For more information send a mail to: info@sputnik.infospace.ru . ...
... VaST is a software tool for finding variable objects on a series of astronomical images. ... VaST performs object detection and aperture photometry using SExtractor on each image, cross-matches lists of detected stars, performs magnitude calibration with respect to the first (reference) image and constructs a lightcurve for each object. ... VaST FITS image viewer ./pgfv . ... Part I" PZP, vol. ... K. V. Sokolovsky, S. A. Korotkiy; "New Variable Stars Discovered by the NMW Survey" PZP, vol. ...
... Synchronous Evolution of Galaxies in Groups: NGC 524 Group O. K. Sil'chenko and V. L. Afanasiev 245 ISSN 1990-3413, Astrophysical Bulletin, 2012, Vol. ... Four of the five galaxies revealed synchronized bursts of star formation in the nuclei 12 Gyr ago. The only galaxy, in which the ages of stellar population in the nucleus and in the bulge coincide (i.e. the nuclear burst of star formation did not take place) is NGC 502, the farthest from the center of the group of all the galaxies studied. ...
... The described algorithm is suitable for measurements of complex images of stars. ... a) the zero-based number of stars in the complex (multicentric) image, . b) set of preliminary coordinates - x i , y i , for all stars, index i is number of a star, . ... i - index of a star in the complex image; . ... These parameters are calculated by a nonlinear method of a least squares.The main output parameters of this algorithm are x i , y i ; where the index i is number of a star in the multicentric image. ...
... Printed in the U.S.A. doi:10.1088/0004-637X/691/2/1222 AUTOMATED LASCO CME CATALOG FOR SOLAR CYCLE 23: ARE CMEs SCALE INVARIANT? ... CME RATE DURING CYCLE 23 Figure 2 shows the daily CACTus CME rate for cycle 23 in red, with the International Sunspot Number (e.g., Vanlommel et al. 2004) superimposed in gray as solar cycle reference. ... The CACTus CME speeds Figure 12. ... A comparison of a sample of common events shows that on average the CDAW CME width is wider than the CACTus CME width. ...
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Ссылки http://solarwind.cosmos.ru/txt/2011/presentations/Sun/Ishkov/apj_691_2_1222.pdf -- 1208.5 Кб -- 15.04.2011 Похожие документы
... part 2 | ... Part 1 . The new concept of formation and development of the Solar system. ... Thus, the initial pulse of the rotation of a protosolar cloud of the solar system was determined as a result of the diversion of a part of the moment of the rotational pulse of the Galaxy. ... Besides this new approach to the pre-solar system as a system of the destroyed vortex structure, we can understand now a number of other peculiarities of the Solar system's structure. ...
... Bad Astronomy . ... Mad Science . ... Universe Today . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... type 1a supernovae seem most useful . ... This is a bright, massive star that explodes after fusing all the light elements in its core. ... That means we can calculate how far away it is. ... This is exactly what we are trying to do with these supernovae; look far enough away that any deviations from flatness of the Universe can be seen. ... Phil Plait . ...
Introduction The suggested invention relates to attitude control system of a spacecraft. ... Systems without interaction with ambient (Systems with jet engines) Here, for instance, we can put systems, which can generate torque because of jettisoning any particles or gas. ... The main element of the suggested attitude control system is an electrical motor, which main feature is absents of a stator. ... 3 Block diagram of an attitude control system on a jet engines base. ... It is a system with| | ...
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Ссылки http://www.cosmoworld.ru/spaceencyclopedia/publications/el_motor%2003engl.doc -- 59.5 Кб -- 07.03.2005 Похожие документы
Supernova 2007uy and 2008D in NGC 2770 . This page is devoted to information on Supernova 2007uy and Supernova 2008D in NGC 2770 . ... Information on the original web pages for many of these images can be found on the updates and links web pages. 2007uy was discovered by Yoji Hirose (Japan)). ... 2008D was discovered by the Swift/XRT satellite which was then observing 2007uy , and announced by Lick Observatory Supernova Search (USA). ... SNWeb has a 2007uy page and 2008D page . ... JM Llapasset . ...
The paper presents the 'Neptune-ME' information display system (IDS) as a spaceman console (SC) of the descent module of the 'Soyuz -TMA' piloted transport spaceship, and the integrated console (IC) of manual control loop for module equipment in the Russian segment of the 'Alpha' international space station. ... to control spaceship systems; . ... An integrated control console (ICC) which is hardware and software compatible with a IBM PC, is suggested as a basic console for the manual control loop. ...
Watching the Detective Although a lot is happening during the seasons, the facts seem to fit together. ... From these facts, we should be able to figure out the cause of the seasons. ... Facts 4, 5, and 8 indicate that the seasons have something to do with the Sun. ... Although the angle varies by the same amount at every latitude (see figure 4 ), the effect of this variation on solar heating increases with latitude, a fact you can confirm with a little trigonometry (see Geometry of the Seasons ). ...
Contacting the Roundup . To submit story ideas or inform the Roundup of a change of address, please e-mail . jsc-roundup@mail.nasa.gov . The mailing address is: . NASA/JSC . Editor, Space Center Roundup AP151 . 2101 NASA Rd. ... Distribution . The distribution department in Building 227 maintains the Roundup distribution lists. ... Retirees must call (281) 244-6397 or e-mail jsc-roundup@mail.nasa.gov for address changes or to be added to the list. ... Contact the Roundup . ...
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A STUDY OF THE FRAGMENT DISPERSAL AND TRAJECTORY OF THE SAYH AL UHAYMIR 001 METEORITE SHOWER. ... We obtained hundreds of GPS find locations, analyzed the fragment distribution, and developed a model of the meteorite's trajectory. ... More than 2670 samples weighing more than 450 kg have been collected. ... Increasing fragment mass along track indicated a flight direction of 233o. The fragments' mass distribution was used to model the meteorite trajectory. ...
... Exposure Time Calculator (ETC) . ... ESO - Public Surveys . ... the recommended values to use for DIT, . ... Detector on-chip integration (DIT): seconds. to your chosen value - a separate page gives recommended values to use for DIT - for modes 1 and 2 below you may wish to start with the maximum recommended values as these will minimize the effect of read noise (a total object exposure of Y secs with DIT=X secs will produce Y/X lots of read noise) and give you a lower limit on the time needed. ...
The low aspect ratio, or spherical tokamak Globus-M [1] has recently been built in a support of international spherical tokamak plasma investigation program. ... The survey to determine the work scope in diagnostic design for Globus-M is given in the paper. ... The next one is an advanced diagnostic set intended to supply the data on basic plasma parameters: electron temperature and density profiles, ion temperature, plasma composition, radiation profile, Zeffective. ... Magnetic Diagnostics. ...