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The ROSAT all-sky survey catalogue of the nearby stars
Schmitt, J. H. M. M.; Sterzik, M. F.; Voges, W. +1 more
We present X-ray data for all entries of the Third Catalogue of Nearby Stars \cite[(Gliese & Jahreiss 1991)]{gli91} that have been detected as X-ray sources in the ROSAT all-sky survey. The catalogue contains 1252 entries yielding an average detection rate of 32.9 percent. In addition to count rates, source detection parameters, hardness ratio…
Radial velocities. Measurements of 2800 B2-F5 stars for HIPPARCOS
Halbwachs, J. -L.; Arenou, F.; Rolland, L. +11 more
Radial velocities have been determined for a sample of 2930 B2-F5 stars, 95% observed by the Hipparcos satellite in the north hemisphere and 80% without reliable radial velocity up to now. Observations were obtained at the Observatoire de Haute Provence with a dispersion of 80 Ä,mm(-1) with the aim of studying stellar and galactic dynamics. Radial…
Galactic globular cluster stars: From theory to observation
Salaris, M.; Weiss, A.; Cassisi, S. +2 more
We use evolutionary calculations presented in a recent paper \cite[(Cassisi et al. 1997a:]{C97a} hereinafter Paper I) to predict B, V, I magnitudes for stars in galactic globulars. The effect of the adopted mixing length on stellar magnitudes and colors is discussed, showing that the uncertainty on such a theoretical parameter prevents the use of …
The distribution of nearby stars in phase space mapped by Hipparcos. Clustering and streaming among A-F type stars
Bienaymé, O.; Crézé, M.; Chereul, E.
This paper presents the detailed results obtained in the search of density-velocity inhomogeneities in a volume limited and absolute magnitude limited sample of A-F type dwarfs within 125 parsecs of the Sun. A 3-D wavelet analysis is used to extract inhomogeneities, both in the density and velocity distributions. Thus, a real picture of the phase …
30 years of multi-wavelength observations of 3C 273
Bouchet, P.; Paltani, S.; Stevens, J. A. +14 more
We present a wide multi-wavelength database of most observations of the quasar 3C 273 obtained during the last 30 years. This database is the most complete set of observations available for an active galactic nucleus (AGN). It contains nearly 20 000 observations grouped together into 70 light curves covering 16 orders of magnitude in frequency fro…
AGNs with composite spectra. II. Additional data
Véron-Cetty, M. -P.; Véron, P.; Gonçalves, A. C.
In a previous paper \cite[(Véron et al. 1997)]{ver97} we presented medium resolution (3.4 Angstroms FWHM) spectroscopic observations of 15 ``transition objects'', selected for having an ambiguous location in the \cite[Veilleux & Osterbrock (1987)]{vei87} diagnostic diagrams, and showed that most of them were in fact ``composite'', this being d…
The IUE INES System: Improved data extraction procedures for IUE
Schartel, N.; Rodríguez-Pascual, P. M.; Wamsteker, W. +1 more
We present the extraction and processing of the IUE Low Dispersion spectra within the framework of the ESA ``IUE Newly Extracted Spectra'' (INES) System. Weak points of SWET, the optimal extraction implementation to produce the NEWSIPS output products (extracted spectra) are discussed, and the procedures implemented in INES to solve these problems…
ISOCAM data processing
Aussel, H.; Abergel, A.; Pantin, E. +6 more
The ISOCAM infrared camera is one of the four instruments on board the ISO (Infrared Space Observatory) spacecraft which was launched successfully on 1995 November 17. It operates in the 2.5 - 18 mu m range, and was developed by the ISOCAM consortium lead by the French Service d'Astrophysique of CEA Saclay. This paper presents different algorithms…
Millimeter and some near infra-red observations of short-period Miras and other AGB stars
Blommaert, J. A. D. L.; Groenewegen, M. A. T.; Baas, F. +3 more
Millimeter observations of 48 oxygen- and 20 carbon-rich AGB Miras with periods shorter than 400 days are presented. In addition, observations of 14 O-rich and 15 C-stars with longer, or no known, periods have also been obtained. The detection statistics is as follows: in 12CO J=1-0 and 2-1 we observed 97 stars, and detected 66 in at le…
Near-infrared photometry of isolated spirals with and without an AGN. I. The data
Roth, M.; Durret, F.; González Delgado, R. M. +6 more
We present infrared imaging data in the J and K' bands obtained for 18 active spiral galaxies, together with 11 non active galaxies taken as a control sample. All of them were chosen to satisfy well defined isolation criteria so that the observed properties are not related to gravitational interaction. For each object we give: the image in the K' …