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XESS: An XMM Extended Source Survey

Saxton, R. D.; Neumann, D. M.; Denby, M. +1 more

The XMM-Newton SSC serendipitous cluster survey

Elvis, M.; Watson, M. G.; Schwope, A. +2 more

Hard X-ray observations of Extremely Red Objects

Brusa, M.

Extremely Red Objects (EROs, R-K>5) constitute a heterogeneous class of extragalactic sources including high redshift elliptical galaxies, dusty star-forming systems and heavily obscured AGNs. Hard X-ray observations provide an unique and powerful tool to uncover obscured nuclear or star-forming activity. We present the results of XMM-Newton ob…

Calculated atmospheric color refraction and observed stellar positions

Langhans, R.; Malyuto, V.; Potthoff, H.

Astrometric observations at different zenith distances have been performed in Dresden in an area centered at NGC 6791 where there are some stars with reliable color information (widely dispersed spectral types in the MK system and color indices B_T-V_T) as well as with accurate positions from Tycho-2 catalog. The results are us…

Hot loop oscillations seen by SUMER

Solanki, S. K.; Curdt, W.; Innes, D. E. +2 more

Solar observations from space and from the ground

Curdt, W.

Recent results from space missions like YOHKOH, SOHO or TRACE as well as ground-based observations clearly indicate that physical processes of most solar phenomena take place on small scales, which are still below the resolution of the instruments employed. There is an urgent need for observations at higher resolution and also for their extension …

INTEGRAL surveys

Walter, R.; Kretschmar, P.; Paizis, A. +2 more

The XMM large-scale structure survey: scientific motivation and first cluster candidates

Valtchanov, I.; Pierre, M.

The XMM-Newton Large-Scale Structure Survey (XMM-LSS) will ultimately cover a region of 8x8 square degrees and with the unprecedented sensitivity of XMM will provide a unique dataset to study the evolution of the cosmic network as traced by clusters and AGNs/QSOs. We discuss the scientific goals and show some first observations of candidate cluste…

Variability of the He I λ5876 Å line in early type chemically peculiar stars. II

Leone, F.; Catanzaro, G.

To try to understand the behavior of helium variability in Chemically Peculiar stars, we continued our on-going observational campaign started by \cite{catanzaro99}. In this paper we present a new set of time resolved spectroscopic observations of the He I 5876 Å line for a sample of 10 stars in the spectral range B3 - A2 and characterized by diff…

Erratum: XMM-Newton view of the Hubble Deep Field-North and Groth-Westphal Strip regions

Griffiths, R. E.; Miyaji, T.; Lumb, D. +2 more

In the paper, ``XMM-Newton view of the Hubble Deep Field-North and Groth-Westphal strip regions'' by Miyaji et al. (2003), we found that one of the data points on Fig. ref{fig:lnls} was incorrectly plotted. The corrected figure is shown below.