19.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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20 papers · 1 filter
Cosmological Adventures in the Lyman Forest
S. Cristiani
The properties of the Lyman- absorptions observed in the spectra of QSOs are reviewed: the distribution of column densities and Doppler widths, the redshift evolution, the ``inv…
High Resolution Observations of the QSO BR1202-0725: Deuterium and Ionic Abundances at Redshifts Above z=4
E. J. Wampler, G. M. Williger, J. A. Baldwin +3
We present results from 12 km/s resolution echelle spectroscopy of the bright QSO BR1202-0725. A preliminary analysis shows that high metallicity narrow line absorption c…
Modeling the Lightcurves of Type Ia Supernovae
W. D. Vacca, B. Leibundgut
In order to investigate non-uniformity in the luminosity evolution of Type Ia supernovae, we fit the lightcurves with a multi-parameter empirical model. The model provides a quanti…
The energetics of flat and rotating early-type galaxies and their X-ray luminosity
L. Ciotti, S. Pellegrini
The global energy budget of the hot gas flows in early-type galaxies is used to explain the recent observational results that S0 galaxies have lower mean X-ray luminosity per…
Obscured AGB stars in the Magellanic Clouds II. Near-infrared and mid-infrared counterparts
Albert A. Zijlstra, Cecile Loup, L. B. F. M. Waters +3
We have carried out an infrared search for obscured AGB stars in the Magellanic Clouds. The survey uncovered a number of obscured AGB stars as well as some supergiants with infrare…
Low-mass star formation in CG1: a diffraction limited search for pre-main sequence stars next to NX Pup
W. Brandner, J. Bouvier, E. K. Grebel +3
Using adaptive optics at the ESO 3.6m telescope, we obtained diffraction limited JHK-images of the region around the Herbig AeBe star NX Pup. We clearly resolved the close companio…
A 2572 and HCG 94 - galaxy clusters but not as we know them. An X-ray case study of optical misclassifications
H. Ebeling, C. Mendes de Oliveira, D. A. White
We present the results of a spectral-imaging analysis of X-ray data obtained with the Position Sensitive Proportional Counter aboard the ROSAT Observatory in a 32 ks pointed observ…
The extinction by dust in the outer parts of spiral galaxies
R. F. Peletier, E. A. Valentijn, A. F. M. Moorwood +3
To investigate the distribution of dust in Sb and Sc galaxies we have analyzed near-infrared and optical surface photometry for an unbiased sample of 37 galaxies. Since light in th…
Spectroscopic Evidence That the Extreme Properties of IRAS F10214+4724 are due to Gravitational Lensing
Stephen Serjeant, Mark Lacy, Steve Rawlings +2
The extreme bolometric luminosity of IRAS F10214+4724, and in particular the huge mass in molecular gas inferred from the CO line fluxes have led to suggestions that this is a gian…
The outburst of the T Tauri star EX Lupi in 1994
Thomas Lehmann, Bo Reipurth, Wolfgang Brandner
We have observed an outburst of the T Tauri star EX Lup in March 1994. We present both photometric (BVR) and spectroscopic (low and medium resolution) observations carried out duri…
Towards Understanding the Nuclues of M31
Philippe Crane
A simple model of the nucleus of M31 based on {\it HST} images and ground based spectroscopy is used to investigate the properties of the double nucleus in M31. The model reproduce…
SN 1986E eight years after outburst: a link to SN 1957D?
Enrico Cappellaro, John I. Danziger, Massimo Turatto
We report on the optical recovery of SN~1986E 7.1 and 7.9 years after explosion. The spectra are dominated by broad H and [O~I] 6300,6364 emission lines with a minor contrib…
Interstellar matter in Shapley-Ames elliptical galaxies. IV. A diffusely distributed component of dust and its effect on colour gradients
Paul Goudfrooij, Teije de Jong
The presence of dust in elliptical galaxies has recently been shown to be quite common. Deep optical multi-colour CCD imaging has revealed the presence of dust lanes and patches, a…
A Study of the Large--Scale Distribution of Galaxies in the South Galactic Pole Region: I. The Data
S. Ettori, L. Guzzo, M. Tarenghi
We present the data from an extensive, moderately deep (b_J = 19.5) spectroscopic survey of galaxies within four regions of sky located near the South Galactic Pole. Abo…
Evolution of the Supercluster-Void Network
P. Frisch, J. Einasto, M. Einasto +5
Recently, the observed cellular nature of the large-scale structure of the Universe with its quasi-regular pattern of superclusters and voids has been pointed out by several author…
TYPE Ib/c SUPERNOVAE AND THEIR RELATION TO BINARY STARS
Bruno Leibundgut
The present understanding of type Ib/c supernovae and their connection to interacting binaries is reviewed. The problems of the classification and the lack of well-observed events…
New results on the Gunn-Peterson Effect at High Redshift
E. Giallongo, S. D'Odorico, A. Fontana +3
Attempts to measure the optical depth due to a diffuse intergalactic medium (IGM) in the spectra of high redshift quasars (GP test) within the ESO key program on the intergalactic…
Clustering 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 Q0055-269 () has been observed at the resolution of 14 km s in the wavelength interval 4750--6300 Å. The statistical distribution of the Doppler…
Star Formation Studies at the VLT
Claude Bertout, Bo Reipurth, Fabien Malbet
We present an overview of what can be done in the field of star formation using the VLT and its advanced instrumentation, and especially with the very high angular resolution provi…
Dark matter in elliptical galaxies
M. Carollo, T. de Zeeuw, R. van der Marel +2
We present measurements of the shape of the stellar line-of-sight velocity distribution out to two effective radii along the major axes of the four elliptical galaxies NGC 2434, 26…