... Early studies of PMS stars focused on T associations, especially Taurus-Auriga. However, one might expect low mass star formation to be different in OB associations. ... He identified Orion OB1a as the stars northwest of the belt. Orion OB1b is composed of the stars near the belt, including the belt stars and Orionis. ... He finds no perceptible distance change within the Orion OB1b association and finds the distance modulus to be 7.8 and 7.9 for Orion OB1a and OB1b respectively. ...

... Observing . ... Solar Observing . ... April 3 (SUN) - Solar Observing, Central Park , Manhattan . ... APRIL'S SKY . ... Lecture Series at the American Museum of Natural History The Amateur Astronomers Association is proud to present an astronomy lecture series from October through May each year for our members and the .. ... The€аAmateur Astronomers Association of New York€аwas organized in 1927 to promote the study of Astronomy, emphasizing its cultural and inspirational value. ...

... The only event-driven pieces of software were the user interface Hermes, the display server GIDS and the GDS server. ... Event-driven tasks are fundamentally different from procedural tasks. ... Using this event handling, a collection of routines has been built, which allows the programmer to construct a graphical user interface for a task. ... These are the events associated with user input keywords and one other event which is generated when a task is resumed after it was pausing. ...

EXECUTIVE SUMMARY LBT PROPOSAL 5/26/01 Attached to this Executive Summary you will find our revised quotation for all packing and transportation costs associated with the delivery of the Large Binocular Telescope from Milan Italy to three different destinations in the United States. ... CONTAINER LIST This list only lists cargo that will fit into ocean containers from Italy to Arizona. ... OHIO EQUIPMENT LIST This is a listing of the equipment that must be transported from Houston to Columbus Ohio. ...

... At the ESO Web you'll find a range of different file formats - from HTML to PostScript/PDF and MPEG movies. See below for a list of helper applications or viewers to display those formats on your MS Windows, Macintosh or Unix computer. ... You can use Ghostscript and ghostview/GSview to view PostScript files (available for MS Windows, Macintosh and Unix platforms). ... MPEG is a way to code audio-visual information a digital format. For Unix platforms, you can use UC Berkeley's mpeg_play . ...

. There are several different shells available for Unix; the most popular are described here. You can use any one of these shells if they are available on your system. And you can switch between the different shells once you have found out if they are available. Bourne shell (sh) . C shell (csh) . TC shell (tcsh) . Korn shell (ksh) . Bourne Again SHell (bash) .

Collinder 399: The Coat Hanger . ... Credit Copyright: John Chumack Explanation: Is this coat hanger a star cluster or an asterism? This cosmic hang-up has been debated over much of last century, as astronomers wondered whether this binocular-visible object is really a physically associated open cluster or a chance projection . Chance star projections are known as asterisms , an example of which is the popular Big Dipper . ... NASA Web Site Statements, Warnings, and Disclaimers . ...

home publications > mercury . SEARCH ASP SITE: Match ALL words Match ANY word . ... ASP Conference Series . ... Steering by Different Stars? Astronomers and the Dark-Sky Movement . ... Photo courtesy of the International Dark-Sky Association. by Susan McGowan . ... According to Arthur Upgren, senior research scientist at Yale University and emeritus professor of astronomy at Wesleyan University, only 17% of ASP members were also members of the International Dark-Sky Association in 2001. ...

... In collaboration with Drs Van Genderen (Leiden, Holland) and Sterken (Brussels, Belgium) papers XV and XVI in the series `Light Variations of Massive Stars' were published. These dealt with the brightness variations of several massive stars in the two nearest neighbour galaxies, namely six stars (R85, R99, R103, R110, R123 and R128) in the Large Magellanic Cloud (LMC) and two (R42 and R45) in the Small Magellanic Cloud (SMC). ...

Astronotes Armagh Planetarium's Stellar Blog! ... Our Galaxy . ... Stars . ... Other Galaxies . ... Light of other eyes, other times: The X-rays and IR radiation making up the image have been travelling for a long time. ... The inspiration here came from a new ESA image of M31, the Andromeda Galaxy, composed from two very different images. ... Our nearest galactic neighbour, the Andromeda Galaxy?s brightness is caused by the hundreds of billions of stars that are contained within. ...

Galileo showed convincingly that heavy objects fell no faster that light ones. ... If an iron ball was pulled down with a much greater force than a wooden one of the same size, why didn't it fall any faster? ... 1) It is harder to lift. ... It is the fact that the loaded wagon has a greater mass that gives it a larger inertia , a larger tendency to oppose any change in its state of rest or of constant motion in a straight line. ... One important quantity was the body mass of the astronauts. ...

... They have been used to describe the content of the 105 columns available in the different VizieR tables. ... We present different applications of UCDs: selection of catalogues, based on their content; identification of catalogues having similar fields; automated data conversion allowing direct comparison of data in cross-identifications. ... Metadata for the VO: The Case of UCDs 71 Figure 2. Example of statistics on the different column names and units used in all VizieR tables for one UCD. ...

Application of IVOA software tools for radio sources investigation Zhelenkova O., Kopylov A., Chernenkov V. The interrelationship between the objects of astronomical catalogs in the different ranges of electromagnetic spectrum and their association into the real astrophysical source has obvious scientific interest. ... We used NVSS as the reference coordinate catalog. ... For 60% of radio sources identified with the objects of the radio catalogs we discovered optical candidates in SDSS survey. ...

Astronomes Amateurs du Luxembourg a.s.b.l. " We bring the Universe to you ! Founded in 1971 by a group of enthusiasts and star aficionados, our association is now counting more than 130 members.As a national association we attract hobby astronomers from the whole country to our regular night-sky observations and to the meetings in our club at Dudelange. ... by topic : PDF File Download (360KB) . ... Article about AAL in "Le Quotidien" newspaper of Juli 21 2005 - PDF File Download (132KB) . ...

... Using the uvby -photometry and proper motion data for about 5500 F stars within 80 pc from the Sun, we have studied velocity ellipsoid parameters and obtained the following results. 1) The sizw of all wllipsoid semiaxes increase systematically for groups of stars with the decrease of both temperature (at constant metallicity) and metallicity (at constant temperature). ... As a result, each of the three parameters - temperature, metallicity and velocity dispersion - is an age indicator. ...

Launch Vehicle Energia . ... Among problems solved while developing the Energia-Buran Reusable Space System were: . ... of the Energia-Buran Space System . to the launch site for the first launch. LV Energia at the launch site working out of LV design to serve as a basis for the development of other launch vehicles differing not only in their liftoff capabilities, but also in types of payloads including reusable orbiters; . ... SEA LAUNCH . ... Official WEB-site of S.P.Korolev RSC Energia . ...

... Fortran . Storage rules Dummy argument is a quantity in the specification of a procedure, function or subroutine. Actual argument is a quantity in the call of a procedure, function or subroutine. ... Becomes 101 END PROGRAM EXAMPLE SUBROUTINE SUB(X, Y, Z) IMPLICIT NONE REAL, INTENT(IN) :: X REAL, INTENT(INOUT) :: Y REAL, INTENT(OUT) :: Z Y = Y**2 Z = X + Y END SUBROUTINE SUB In Fortran there is really only one kind of argument usage, called argument association. ...

... Tracking stations will be selected in accordance with the schedule issued daily by the General Operative Control Group (GOCG) in Lavochkin Association with the gaps in operations during spacecraft contact with the control stations (CS). ... Communication frequencies (carrier): high data rate information transmission downlink from the SRT ­ 15.000 GHz; uplink synchronization ­ 7.2075 GHz; downlink synchronization ­ 8.400 GHz. ...

... During the analysis of the surveys carried out on RATAN-600, it was found that almost one fifth of the detected sources shows significant radio flux variations. ... We used the data from "Cold" radio surveys carried out with RATAN-600 in 1980-1994 to search for radio sources with significant flux variability. ... On possibility of detection of variable sources using the data of Cold surveys carried out on RATAN-600. ... Detection of Variable Sources Using the Data of "Cold" Surveys. ...

... sin f = y / r . cos f = x / r . ... They are now viewed as new definitions of the sine and cosine, for the polar angle f given by x and y ( a slightly different way of formulating this definition is described further below ). ... sin 2 f + cos 2 f = 1 . ... Angle . ... Many trigonometry texts define the sine and cosine slightly differently, using the so-called unit circle . ... Then the distance AB ("the sine line") equals sin a , and the distance OA ("the cosine line") equals cos a . ...