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Abstract. We present X-ray data for all entries of the Third Catalogue of Nearby Stars (Gliese & Jahrei 1991) that have been detected as X-ray sources in the ROSAT all-sky survey. The catalogue contains 1252 entries yield-ing an average detection rate of 32.9 percent. In addi-tion to count

We combine the recently published CIZA galaxy cluster catalogue with the XBACs cluster sample to produce the first all-sky catalogue of X-ray clusters in order to examine the origins of the Local Group’s peculiar velocity without the use of reconstruction methods to fill the traditional Zone

Abstract: An all-sky comprehensive catalogue of calculated radio and X-ray associations to optical objects is presented. Included are X-ray sources from XMM-Newton, Chandra and ROSAT catalogues, radio sources from NVSS, FIRST and SUMSS catalogues, and optical data, identifications and redshifts

A&A manuscript no. (will be inserted by hand later) Your thesaurus codes are:

that is demonstrably optimal, to maximise the reliability, utility and robustness of the resulting radio source catalogues. A key stage in source extraction methods is the background estimation (background level and noise level) and the choice of a threshold high enough to reject false sources, yet not so high

already catalogued. Recent large catalogs have revolutionized our ability to do astrometry with CCD images. The recently published FITS World Coordinate System standard has provided a standard way of parameterizing that astrometry, and the WCSTools and SExtractor software packages allow the automation

triaxial halo model, we compute expected distributions of large Einstein radii. To assess the cosmic variance, we generate a number of Monte-Carlo realisations of all-sky catalogues of massive clusters. We find that the expected largest Einstein radius in the universe is sensitive to parameters

Abstract. In this study 21 catalogues of dust clouds in the Galaxy were cross-identified by taking into account available properties such as position, angular dimensions, opacity class and velocity. An initial list of ≈6500 entries was condensed into a cross-identified all-sky catalogue containing

Catalog, we have retrieved useful near-IR J, H, and KS magnitudes for more than 800 hot subdwarfs (sdO and sdB stars) drawn from the Catalogue of Spectroscopically Identified Hot Subdwarfs (Kilkenny, Heber, & Drilling 1988, 1992). This sample size greatly exceeds previous studies of hot