The European Large Area ISO Survey (ELAIS) has surveyed ~ 12 square degrees of the sky at 15 and 90 μ m and subsets of this area at 6.75 and 175 μ m using the Infrared Space Observatory (ISO). This project was the largest single open time programme executed by ISO, taking 375 hours of data. A preliminary catalogue of more than 1000 galaxies has

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We have studied the physical conditions in the central 300 pc of the prototypical starburst galaxy NGC 7714. Our analysis is based on ultraviolet spectroscopy with the HST/GHRS and ground-based optical observations, and it also covers X-ray and radio data taken from the literature. The data are interpreted using evolutionary models optimized for

We present in this paper a detailed study of the kinematical properties of the ionized gas around the young massive star clusters in the nucleus of NGC 4214. The analysis is based on bidimensional spectroscopical data, allowing to derive the spatial variation of different properties (intensity, velocity and width / line splitting) of the emission

The ISOPHOT Interactive Analysis (PIA), originally conceived as a tool for ISOPHOT data processing to be used by calibration experts, rapidly became the software of choice for scientific data reduction of ISOPHOT observations. In this paper we summarize the enhancements of PIA in the last year, and discuss in particular its capabilities for

We present lithium observations of 35 stars previously reported by Wichmann et al. (1996) to be possible new weak T Tauri stars (WTTS) discovered by ROSAT in the Taurus-Auriga star-forming region. These stars were identified on the basis of low-resolution optical spectra. We have used our higher resolution spectra for measuring the equivalent