... Chandra Survey . Selection Criteria . Fields Observed . NOAO Survey . ... X-ray Database . Optical Database . ... Bulge Windows Survey . ... The ChaMPlane survey is being conducted at the Harvard-Smithsonian Center for Astrophysics. The following are the criteria used to select ChaMPlane target fields from Chandra fields. Chandra pointings with ACIS-I, ACIS-S or HRC imaging (TE) mode; no gratings, no CC mode. Galactic plane fields ( |b| ~ Deep Chandra fields (~>20 ksec) . ...

I-GALFA Survey Fields . ... Most I-GALFA fields are observed by ``nodding'' the telescope north and south along the meridian to trace out a zig-zag pattern on the sky as the Earth rotates. ... The I-GALFA fields fill the AO DEC range and overlap with each other by 20', with one field 3 degrees wide at the zenith and four others 9.3 degrees wide covering the rest of the survey. ... The LST range of each field is shown in blue. ... Field . ... The I-GALFA fields are shown in Galactic coordinates below. ...

... These Frontier Fields will combine the power of HST with the natural gravitational telescopes of high-magnification clusters of galaxies. ... We are soliciting gravitational lensing maps for the last four Hubble Frontier Fields clusters (MACSJ0717.5+3745, MACSJ1149.5+2223, AbellS1063, and Abell 370) based upon the exceptionally deep HST FF imaging and other new ancillary data. ... For the full set of proposal instructions and requirements, see the FY16 Frontier Fields Lensing Map Call for Proposals....

Compilation of cz (radial velocity) measurements . HyperLeda home | Documentation | ... The catalog (table a110 in the database) presents the compilation of redshift of galaxies, z , z = ( - 0 ) / 0 = ( 0 - ) / where and 0 refer the observed and emitted wavelength, and 0 are the observed and emitted frequency. ... For homogeneity of the HyperLEDA, the radial velocity from "radio" convention has to be transferred to redshift using formula cz = V radio / (1 - V radio /c). ... radio measurement . ...

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... Science . ... Science Users Information > Science Publications > Science Announcements > First Data Releases of VIDEO Elais-S1 and CDFS Fields . ... VIDEO is a deep near-infrared survey which targets ~12 square degrees over the Elais-S1, XMM-LSS, and extended Chandra Deep Field South (CDFS) extragalactic fields. ... First data releases of the Elais-S1 and CDFS fields have just been made available. ... Coverage over the full 4.5 square degrees of the CDFS field will be provided in future releases. ...

... We use the first XMM serendipitous source catalogue (1XMM) to compile a sample of normal X-ray galaxies . ... We combine our emission line sample with earlier works forming the most comprehensive X-ray selected galaxy sample for the study of the X-ray luminosity to the H? luminosity - a well-calibrated star-formation indicator - relation. ... We find that the X-ray luminosity strongly correlates with the H? luminosity, suggesting that the X-rays efficiently trace the star-formation. | ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Many of the fields are spatially . ... These include a pulsating white dwarf which appears to have a hot companion, a number of stars with A-type spectra that vary on a period in the range 20 35 min. Our primary goal is the discovery of new AM CVn systems: we find 66 sources which appear to show periodic modulation on a time-scales less than 40 min and a colour consistent with the known AM CVn systems. ...

... A magnetized bar has its power concentrated at two ends, its poles ; they are known as its north (N) and south (S) poles, because if the bar is hung by its middle from a string, its N end tends to point northwards and its S end southwards. ... That flow became known as an electric current . ... An electric current produced a magnetic force! ... The fundamental nature of magnetism was not associated with magnetic poles or iron magnets, but with electric currents . ...

Follow-up astrometry and recoveries are made with the ANU 40 inch (1.0-m) f/8 reflector at Siding Spring Observatory (IAU code 413). ... A routine follow-up of 2003 WY153 on 2003 Dec 15 became much more than routine when a faint object with unusual motion vector was found close to the target asteroid. ... During routine astrometry with the 1.0-m to improve the orbit of the Apollo asteroid 2004 CB, the asteroid was found on March 30 to have a short tail! ... Siding Spring Survey Main Page . ...

NMW survey overview . Access image archive . ... The New Milky Way survey aims to detect bright (V<13.5) optical transients near the Galactic plane using an automated wide-field (8x6 deg.) system capable of surveying the whole Milky Way area visible from the observing site in one night. ... All images obtained during the transient search survey are available online (please use the image archive access form ). ... Images per field: . ... Images per night: . ... Milky Way imaging time: . ...

... Up: Distributed Data Systems, Data Mining . Previous: SIMBAD as a Test Bed for two Object Oriented Database Management Systems: Objectivity/DB and O2 . ... The Victoria Explorer for Redshift Databases on the Internet (VERDI) is a Web-based data retrieval system which allows users to access tabular data, images, and spectra of astronomical objects and to perform queries on the underlying database. ... As the CNOC2 Field Galaxy Redshift Survey neared completion in 1998, we had a problem. ...

Welcome to the 10C Survey website! ... The first 10C Survey results from an area of 27 sq. degrees complete to 1 mJy and 12 sq. degrees complete to 0.5 mJy have now been released. ... The first results from the survey, which is the deepest extragalactic radio source survey of any significant extent (> 0.2 sq. degrees) above 1.4 GHz, including the deep 15.7-GHz source count are contained in AMI Consortium: Davies et al. ... For each field, deep and shallow areas have been defined. ...

In this talk we will present a series of results and open problems emerging from the study of infinite global fields. We will give a survey of the asymptotic properties of the Brauer-Siegel and Euler-Kronecker invariants in the classical situation of number fields and function fields as well as in certain higher dimensional cases. ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... Star Atlas . ... stars . ... Observing Podcasts . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... How do neutron stars generate steady magnetic fields? ... How can a neutron star exist if those neutrons are just going to pieces? Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

The SciSim SPR search service helps you to find Software problem reports in the SciSim SPR database. You tell the search service what you are looking for by typing in a pattern for the SPR Id's and one or more regular expressions for the fields within an SPR. ... If a field in the search form is omitted, the search service will assume that you are looking for any match for that particular field. ... An SPR consists of fields that contain information. ... Date% le '1999-04-01' and . ... Field . ...

IBIS Data Analysis . ... IBIS . ... Flat Fielding - Introduction . The images obtained by IBIS will have intensity variations across the field of view that are not due to the solar image, but rather caused by instrumental effects that alter the observed intensity in each point of the field of view. ... IBIS Flat Fielding Techniques . ... Therefore, it is desirable to obtain the flat field measurements center on a point along the equator near the heliographic center of the solar disk. ...

... We present the results of an ongoing survey of cool, late­type supergiants -- the descendants of massive O and B­type stars -- that has systematically detected magnetic fields in these stars using spectropolarimetric observations obtained with the ESPaDOnS at the Canada­France­Hawaii Telescope. Our observations reveal detectable, often complex Stokes V Zeeman signatures in the Least­Squares Deconvolution mean line profiles in a significant fraction of the observed sample of 30 stars. ...

Peremennye Zvezdy", . ... Min . ... OGLEII CAR-SC01 2765, 2MASS J11052668-6148368 . ... min . Comm. ... OGLEII CAR-SC01 5494, 2MASS J11051146-6144570 . ... OGLEII CAR-SC01 46493, 2MASS J11055923-6150589 . ... OGLEII CAR-SC01 69423, 2MASS J11055898-6122543 . ... OGLEII CAR-SC01 90562, 2MASS J11055545-6058470 . ... OGLEII CAR-SC01 124846, 2MASS J11062757-6113440 . ... OGLEII CAR-SC01 127687, 2MASS J11062902-6110388 . ... OGLEII CAR-SC02 17, 2MASS J11071601-6152001 . ... MinII = 16.83. ...

... 2 Magnetic Field . ... A magnetized bar has its power concentrated at two ends, its poles ; they are known as its north (N) and south (S) poles, because if the bar is hung by its middle from a string, its N end tends to point northwards and its S end southwards. ... That flow became known as an electric current . ... An electric current produced a magnetic force! ... The fundamental nature of magnetism was not associated with magnetic poles or iron magnets, but with electric currents . ...