... Reference: Proceedings of the Workshop on Binary and Variable Stars, 1999, Gunma Astronomical Observatory, Gunma Prefecture, Japan . ... Extreme helium stars are highly evolved luminous stellar remnants. ... The existence of pulsations in many helium stars, due to strange-mode instabilities or the Z-bump kappa-mechanism, provide a range of diagnostics including radii from Baade's method and contraction rates from period changes. ...

This module provides for server-side imagemap processing. ... Configurable generation of imagemap menus. The lines in the imagemap files can have one of several formats: directive value [x,y ...] . ... The directives can come in any order, but are processed in the order they are found in the imagemap file. base Directive . ... Module: mod_imap . ... Its value is overridden by a default directive within the imagemap file. ... Its value is overridden by a base directive within the imagemap file. ...

spaceweb@oulu.fi - last update: 28 May 1995, 0800 UT . Auroras have entered into the folklore of peoples living at high latitudes. ... Norse mythology makes frequent reference to the bridge Bifrost, a burning, trembling arch across the sky, over which the gods could travel from Heaven to Earth. ... In the Norwegian folklore, the aurora has been described as a harbinger of harsh weather: snow and wind are believed to follow bright displays. ... Neil Bone, The Aurora, Sun-Earth Interaction . ...

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. ...

... The classical Beltrami theorem says that any metric whose geodesics are straight lines has constant curvature. But what can we say about geometries whose geodesics are circles (to be more precise --- parts of circles; by a circle we always mean a circle or a line)? ... We prove that a rectifiable simple bundle of circles containing sufficiently many circles in general position is the image of a bundle of lines under some left or right quaternionic fractional transformation. ...

In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

... The words are numbered according to the reference mentioned above. ... 59 WORD wSecond ; // 0 .. 59 satellite tracking start time (GMT) float fStep ; // reserved WORD wMass ; // reserved BYTE reserved [12] ; // reserved WORD wExtraBytes ; // reserved } TRAJECTORYHEADER ; NOTE: the satellite tracking start time is a hardware operating start time to follow satellite. typedef struct { // ephemeris at satellite tracking start time double time ; // Epoch time (yyddd.ddddddddd)...

XmTel ----- XmTel is a Motif-based program including a command line utility cmdtel developed by John Kielkopf (kielkopf@louisville.edu) to operate a telescope connected to a Linux computer system. ... In other words, slew to a bright or easily recognized target, center it in the field, and click Reference -> Target. ... See the main README for cautions.) ... XmTel assumes that target coordinates entered from the keyboard are in the Epoch that the telescope coordinates are currently displayed in. ...

... A Front of line M-G Goto a line ^E End of line ^N Next line M-N Front of paragraph ^P Previous line M-P End of paragraph ----------------------------------------------------------------------------- = (2) DELETING INSERTING -- Delete previous character ^D or DELETE Delete next character ^C or INSERT Insert a space M- -- Delete previous word M-D Delete next word ^K Close ( ... The KILL BUFFER is the text which has been most recently saved or deleted. ...

Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... History . ... Flights Chronology . ... Sea Launch . ... Land Launch . ... History of flights . ... Land Launch - Injection Profile . ... 1-st burn of Block DM-SLB (Injection into reference orbit) . ... LV two stages provide the orbital block injection into the open orbit with negative perigee; by three burns of the Upper Stage main engine the spacecraft is injected into the given target orbit. ...

... We have compiled the Catalogue of extragalactic supernovae using the GCVS card catalogue. ... Doubtful (?), or rejected (-) SN 8 A1 --- RemFlag [*] The '*' indicates a remark in sn_rem.dat 10- 19 A10 --- Gal Parent galaxy designation 21- 22 I2 h RAh Right Ascension 1950 of Parent galaxy 23- 24 I2 min RAm Right Ascension 1950 (minutes) 25- 28 F4.1 s RAs Right Ascension 1950 (seconds) 29 A1 --- DE- Declination 1950 (sign) 30- 31 I2 deg DEd Declination 1950 of Parent ...

Microsymposium 34, MS015, 2001 TO THE DISCOVERY OF THE "SOUTH POLE - AITKEN " BASIN. ... Head [2] and Spudis [1] suggested in their reviews that the existense of the structure identified later as the South Pole - Aitken baasin was first predicted on the basis of a relief analysis of the mountain ridges observed in the libration zone be Hartman and Kuiper [7], i.e. after the first images of the lunar far-side had been obtained. ... SOUTH POLE-AIKEN BASIN: V.I.Chikmachev et al. ...

... available from http://www.vsop.isas.ac.jp/ops/VSOG_doc.html . draft dated 1 July 1996. ... dated 12 March 1996. ... version 2.0, dated 14 Dec 96. ... version 2.0, dated 19 Feb 1996. ... version 1.0, dated 11 October 1996. ... version 3.0, dated 10 April 1996. ... version 1.1, dated 30 July 1996. ... version 1.10, dated 13 Nov 1996. ... version 1.0, dated 05 Sep 1997. available from http://www.vsop.isas.ac.jp/ops/VSOG_doc.html . ... draft version dated 27 November 1996. back to top . ...

... The following lists several Chandra-related sites on the World-Wide Web (WWW). ... Chandra X-Ray Center (CXC), operated for NASA by the Smithsonian Astrophysical Observatory (SAO). http://wwwastro.msfc.nasa.gov/ . ... AXAF Mission Support Team (MST), at the Smithsonian Astrophysical Observatory (SAO). http://hea-www.harvard.edu/HRC/ . ... Chandra Low-Energy Transmission Grating (LETG) team at Space Research Organisation Netherlands (SRON). http://www.rosat.mpe-garching.mpg.de/axaf/ . ...

... 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. ...

Astronomical Data Analysis Software and Systems VII ASP Conference Series, Vol. ... Its expansion inн cludes, handling of the High Resolution Mirror Assembly (HRMA) Xнray Detection System (HXDS) stage dither and the fiveнaxis mount (FAM) attachment point movements, correction of misalignments of the mirror mount relative to Xнray calibration facility (XRCF) and to the default FAM axes, as well as solution of sky aspect o#sets of flight, etc. ... Pixlib data flow and system configuration. ...

Institute of Applied Astronomy Russian Academy of Sciences Method of Determining the Orbits of the Small Bodies in the Solar System Based on an Exhaustive Search of Orbital Planes Dmitrii Vavilov, Yurii Medvedev Introduction to the problem: Let we have n 3 positional observations of a body: points in time ( = 1, ) , right ascensions , and declinations . ... Determination of the orbit using the Gauss method of determining orbital elements based on two heliocentric positions and points in time. ...

... 237S (SIMBAD/NED BibCode) ================================================================================ Keywords: Sun: UV radiation - atmospheric effects - Sun: atmosphere - lines: identification Description: An ultraviolet atlas of the solar spectrum with a spectral resolution of 15mA in the region 1948-2000A is presented. ... The wavelength atlas with a list of about 550 lines has been synthesized from data at center of the Sun ({mu}=1) and at {mu}=0.89, smoothed out over an area of 30 arcsec. ...

... First Level Heading (please use initial caps) Type text here. Please notice first paragraph is not indented. ... Another First Level Heading Second Level Heading Another first paragraph, not indented, using "ASP_section_para_1" style. ... Sample Figures and Tables Figures Figures may be inserted into the text using either a blank placeholder followed by a caption, as in Figure 1, or by embedding the figure into the document. ... Please use the "ASP Acknowledgements" styles for heading and text. ...