19.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR3.5k papers
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10 papers · 1 filter
The Space Distribution of the Lyman Alpha Clouds in the Line of Sight to the Z=3.66 QSO 0055-269
S. Cristiani, S. D'Odorico, A. Fontana +2
The spectrum of the quasar Q0055-269 () has been observed at the resolution of 14 km s in the wavelength interval 4750--6300 Å. We give a list of Lyman lines and…
Network Resources for Astronomers
H. Andernach, R. J. Hanisch, F. Murtagh
The amount of data produced by large observational facilities and space missions has led to the archiving and on-line accessibility of much of this data, available to the entire as…
Stellar Evolution and Mass Loss on the Asymptotic Giant Branch
Albert A. Zijlstra
Mass loss dominates the stellar evolution on the Asymptotic Giant Branch. The phase of highest mass-loss occurs during the last 1--10\% of the AGB and includes the so-called Miras…
The variable ROSAT X-ray spectrum of the BL Lac 0716+714
M. Cappi, A. Comastri, S. Molendi +3
The BL Lac object 0716+714 is a powerful flat spectrum radio source detected by CGRO-EGRET at -ray energies. It has been observed for about 21000 s over two days by the X-ray te…
Star Formation in Dwarf Irregular Galaxies: NGC 6822
G. Marconi, M. Tosi, L. Greggio +1
Our proposed method to study the star formation histories in nearby irregulars is here applied to NGC 6822. To this purpose we have obtained accurate CCD photometry of three region…
Sky Subtraction with Fiber-Spectrographs
C. Lissandrini, S. Cristiani, F. La Franca
The sky subtraction performances of multi-fiber spectrographs are discussed, analysing in detail the case of the OPTOPUS system at the 3.6 meter ESO telescope at La Silla. A standa…
BD+30 3639: The Infrared Spectrum During Post-AGB Stellar Evolution
R. Siebenmorgen, A. A. Zijlstra, E. Kruegel
We present a radiative-transfer calculation which reproduces the infrared spectrum of the planetary nebula BD~+303639. We calculate the transfer process through absorptio…
SN~1991T: Reflections of Past Glory
Brian P. Schmidt, Robert P. Kirshner, Bruno Leibundgut +5
We have obtained photometry and spectra of SN~1991T which extend more than 1000 days past maximum light, by far the longest a SN~Ia has been followed. Although SN~1991T exhibited n…
VLA Measurements of a sample of Planetary Nebulae
Stuart Pottasch, Albert Zijlstra
We report on new radio measurements of Galactic planetary nebulae, aimed at resolving the controversies on the reliability of older VLA flux densities and the suggested deviations…
Testing the Peculiar Velocity Field predicted from Redshift Surveys
Wolfram Freudling, Luiz Nicolaci da Costa, Paulo S. Pellegrini
The reconstruction of the peculiar velocity field from the 1.936~Jy iras selected sample of galaxies is compared to a similar reconstruction from an optically selected sample. A ge…