As a part of our collaboration in the COSMOS Project, devoted to the characterization of galaxies during the epoch of maximum star formation in the history of the Universe, we have carried out a deep photometric survey covering about 380 arcmin2 in the so-called Groth Strip Flanking Fields. The observations were obtained in the K' band with the

The evaluation of the use of library collections is a fundamental tool for the development of a relevant and cost-effective collection. Bibliometrics offers several methods to measure the level of use of collections. In this paper, we present the first results of a bibliometric analysis of the references cited in the articles published by authors

A new part of our long term study of IR mergers and IR QSOs with galactic winds (GW) is reported. In particular, we present a study of morphology, kinematic and ionization structure of: Arp 220, Mrk 231 and NGC 4038/39. This program is based mainly on INTEGRAL two dimensional (2D) spectroscopy obtained on the 4.2 m William Herschel Telescope (at La

The BL Lac 1517+656 is an extreme example of its class. Not only is it the most optically luminous BL Lac known but this extreme emission extends to both radio and X-ray frequencies. In our WFPC2 snapshot survey we discovered a series of arcs describing a 2 arcsecond ring surrounding the object. Follow-up observations with additional WFPC2 bands

The pulsating DAV white dwarf G185-32 was observed with the Whole Earth Telescope in 1992, during XCov8. We briefly report on the weighted Fourier transform of the data obtained.

We present the analysis of UV and optical spectra of M 33 early B-type supergiants. Stellar parameters, metal abundances (Si, Mg, O and N) and mass loss rates are derived from anlyses of optical spectra by means of non-LTE unblanketed unified model atmospheres (FASTWIND code, Santolaya-Rey, Puls & Herrero 1997). These analyses use wind terminal