This contribution is intended as a ‘rough guide’ to the Hipparcos Catalogue for the non-expert user. Some general aspects of the use of astrometric data are discussed as well as Hipparcos-specific applications. We discuss when and at what level one may expect systematic errors to occur in the Hipparcos Catalogue. Next we discuss the question of the interpretation of the measured parallaxes in t...

We measure the correlation between sky coordinates of the Swift BAT catalogue of active galactic nuclei with the arrival directions of the highest energy cosmic rays detected by the Auger Observatory. The statistically complete, hard X-ray catalogue helps to distinguish between AGN and other source candidates that follow the distribution of local large-scale structure. The positions of the full...

Candido Portinari (1903–1962) is the most famous Brazilian painter, whose production of more than 4500 works is spread all over the world. We are currently undertaking the design and production of the Catalogue Raisonné of his complete work. We developed a multimedia database, containing all the information needed for the catalogue. To load the pictures into the database, slides of the painter’...

This paper presents the catalogue and the method of determination of averaged quadratic effective magnetic fields B e for 596 main sequence and giant stars. The catalogue is based on measurements of the stellar effective (or mean longitudinal) magnetic field strengths B e , which were compiled from the existing literature. We analysed the properties of 352 chemically peculiar A and B stars in t...

Copyright is held by the author/owners. Abstract We develop a new medium of freeform curation for digital arts catalogues that integrates an infinite zoomable canvas, sketching, and spatial arrangement of rich catalogue elements. We characterize media of curation on two levels: the individual elements that are collected and how those elements are put together through assemblage. The elements of...

We consider the statistical problem of catalogue matching from a machine learning perspective with the goal of producing probabilistic outputs, and using all available information. A framework is provided that unifies two existing approaches to producing probabilistic outputs in the literature, one based on combining distribution estimates and the other based on combining probabilistic classifi...

In this paper, we introduce a catalogue template as one of the building blocks for a repository of metrics. Particularly, starting from a conceptual quality framework, we thoroughly discuss a catalogue template for product metrics instantiating it with some Web metrics. A catalogue of metrics basically allows evaluators and other stakeholders to have a consultation and reuse mechanism, which st...

Quasars selected in optical surveys by means of their blue or UV excess are known to be strong emitters in the X-rays, except for Broad Absorption Line (BAL) objects. In this paper we study the X-ray emission of quasars selected through their emission line spectrum rather than their blue excess. X-ray data are obtained by cross-correlating two optical samples (the Hamburg Survey Catalogue and t...

We present proper motion (μ) catalog of 5,078,188 stars in 49 Optical Gravitational Lensing Experiment II (OGLE-II) Galactic bulge fields, with the total area close to 11 square degrees. The proper motion measurements are based on 138 − 555 I-band images taken during four observing seasons: 1997-2000. The catalogue stars are in the magnitude range 11 < I < 18 mag. In particular, the catalogue i...

The CMB Planck satellite (ESA) will provide a catalogue of ≈ 30000 galaxy clusters (Sunyaev-Zel'dovich effect) between redshift 0 and ≈ 2-3 (depending on the cosmological model). This hughe catalogue of clusters will allow detailed studies of the evolution of the cluster population with redshift which will constrain the cosmological model. The identification of the high redshift clusters should...