... Ortiz, P. 2003, in ASP Conf. ... Computer-assisted catalogue-merging utilities are the natural extension to manual methods used by astronomers to merge information from different catalogues in the pre-VO era. Recognizing which columns represent the same physical quantity is important not only to combine two or more tables, but it is of prime importance when the aim is to recognize sources with similar physical characteristics in an N-dimensional parameter space, ie, true data-mining. ...

... Initially SAI Supernova Catalogue was presented in the form of filebased system. ... The current version of SAI Supernova Catalogue presents data on supernovae together with data on their parent galaxies. ... The main source of data for the galaxies was LEDA database. ... In some cases our data were compared with the ones from the Asiago Supernova Catalogue and from List of Supernovae at Harvard-Smithsonian Center for Astrophysics, but the compilation of our Catalogue is carried out independently. ...

Stellar Clusters are very useful laboratories for empirically studying stellar evolution. ... All cluster stars are at the same distance . All cluster stars have the same physical age . ... CM diagram Young Cluster In this case we see the Main Sequence fully represented. The blue dots represent massive stars with short main sequence lifetimes. ... Thus, identifying the most massive star which is still on the main sequence is an effective means of determining the age of a stellar cluster. ...

... Many scientific institutions maintain bibliographies of articles published by their scientists and monitor references made to these publications; these figures are often used to evaluate the effectiveness of the institution. ... a) Identification of papers that are based, at least partly, on new data Publications based on observations can be subdivided into two groups: those presenting new, previously unreported data, and those that make use of already published data. ... Published by . ...

... Bojan Nikolic web pages home . ... This week I've been in part working on Bayesian retrieval of water vapour column from prototype WVR data. The attached plot shows a typical result: It shows the retrieved *zenith* water vapour column as a function of time while the telescope was tracking a source for about an hour (it was setting at the time). ... Please enable JavaScript to view the comments powered by Disqus. blog comments powered by Disqus . Copyright 2012, Bojan Nikolic feedback welcome ...

... This is done by taking in all input files the extension whose name is specified by the maintable parameter (called 'merged extension' in what follows) and merging the columns into a single output extension of the same name. ... Its contents is taken from the CCDID keyword (and QUADRANT for EPIC PN). ... To propagate other column specific keywords, they must be specified manually via the extensionchecks , mainattributes , maxattributes and minattributes parameters (see above). ...

... The visibility datasets possibly contain correlations for different polarizations and Stokes parameters. There are two basic ways that polarization characteristics can be measured: firstly, two orthogonal feeds can be present on the antennas, and the four different polarization correlations from a baseline can be taken and recorded. ... There are two ways the user can determine which polarizations he or she wants to process, either with the select parameter, or with the stokes parameter. ...

. Christmas History Traditions Carols Celebration in UK Celebration in USA яhristmas Menu .

Next: First Catalog Sources Up: The Second EGRET Catalog Previous: Catalog Construction . ... For each observation with 3, the excess is presented as a flux with its uncertainty. ... For all except the brightest sources or those in confused regions, the statistical uncertainty is larger than any systematic uncertainties. ... The primary catalog is Table 4. ... Other names -- the source name from the first EGRET catalog ([ Fichtel et al. 1994b ]) or other gamma-ray references. ...

... Ancient Greeks understood it quite well, and they considered astronomy not only as science, but also as art, with its Muse - Urania. ... Pushkin . ... Vulcano Island . ... Vulcano Workshop . ... Jim Beall Tree, Washington . ... Julia Tree, Pushkin . ... Tyumen, St.Peter and Pavel church . ... Binary Star . Binary System of X-ray Pulsar . Disk Accretion onto Magnetized Neutron Star . ... Discovery of X-ray stars . ... X-ray stages of binary evolution and Non X-ray stages of binary evolution . ...

Each point in this graph represents one star in NGC 2808. The vertical axis represents the brightness (as measured through Hubble's near-infrared F814W filter) of the stars (the brightest stars near the top). The horizontal axis represents the colours of the stars, with bluer stars to the left and redder to the right (blue magnitude minus near-infrared magnitude). ...

Herschel Guaranteed-Time Key Projects . at Arcetri . ... Both regard spectroscopic observations of different classes of star-forming regions in the Galaxy. WISH: WATER IN STAR-FORMING REGIONS WITH HERSCHEL . ... HS3F: HERSCHEL SPECTRAL SURVEYS OF STAR FORMATION REGIONS . ... Since gas cools mostly by line emission, knowing what molecules are formed and which lines are emitted in the different regions at different times is mandatory to understand the gas thermal balance. ...

... The planned colloquium is attached to JENAM-2000, so we supply in this . Information letter a short description on the meeting. ... application of spectroscopic data. ... obtaining experimentally and theoretically of a vast bulk of atomic and . molecular data for various astrophysical problems and the ways how to . ... JENAN-2000 meeting. ... The Registration and accommodation are common both for main JENAM-2000 . ... form for the main JENAM-2000 meeting is mandatory for receiving the support. ...

Next: Discussion Up: Adaptive Regularized Restoration Algorithms Previous: Iterative Image Restoration . ... Fig. 1 shows the original blurred image and the Richardson-Lucy restoration. Fig. 2 shows the restored result using the generalized iterative adaptive algorithm and the frequency adaptive algorithm. ... The graph for the Richardson-Lucy implementation is seen in Fig. 4, the spatial iterative adaptive algorithm's graph is seen in Fig. 5, and the frequency adaptive algorithm's is seen in Fig. ...

... A three-cell test section roughly representative of the primary mirror was provided for this test by the Steward Mirror Lab. ... Additionally, the tests are intended to determine relative airflow vs. pressure drop characteristics for each of the air flow patterns so the results can be evaluated both as a function of flow rate and of pressure drop along the flow path. ... The bottom (top as installed) was cut out so it could close the chamber for heating and be removed for the cooling tests. ...

Next: One example Up: No Title Previous: No Title . Wavelets are versatile tools of harmonic analysis. Because of their many uses, the word `wavelet' comes with different connotations (and different promises) to users in different fields. ... To pursue the analogy, one may wish to select from the data some contact surfaces with specific finish tolerances. the amount of information is then reduced by selection and/or by statistical means. ...

... UNIX, and therefore Linux, recognizes two different kinds of device: random-access block devices (such as disks), and character devices (such as tapes and serial lines), some of which may be serial, and some random-access. Each supported device is represented in the filesystem as a device file . ... Something similar is needed for most devices. ... The first character in the first column, i.e., ` c ' in crw-rw-rw- above, tells an informed user the type of the file, in this case a character device. ...

... The material in "From Stargazers to Starships" meets several important requirements of the national standards. Pages cited below are from National Science Education Standards National Academy Press, Washington 1995. ... For example: the sections on astronomy not only describe calendars and sundials (including their construction), but also the astronomy of the ancient Greeks, including two different ways in which ancient Greeks estimated the distance to the Moon. ...

The spatial power spectra of Galactic . ... Neutral hydrogen is an important constituent of the interstellar medium, and has been widely studied at 21 cm line emission. Within the Galactic plane, structure of HI emission is seen over wide range of angular scales, down to tens of milliarc seconds. ... In the high galactic latitudes an alternative approach is seen more reasonable - to describe HI emission in terms of an angular power spectrum over a range of scales. ... Figure 1. ...

... Research . Projects . ... The name of the project APEX is a reduction from words " Active Plasma Experiments " . The core of the project are active experiments with injection of electron and (or) plasma beams from a board of the satellite with simultaneous registration of the phenomena, produced by interaction of injected beam with background plasma. ... Active experiments utilise modulated electron beam accelerator and source of modulated xenon plasma beam on the main spacecraft APEX. ...