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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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31 papers · 2 filters
Constraints on Omega_B from the nucleosynthesis of 7Li in the standard Big Bang
Alain Coc, Elisabeth Vangioni-Flam, Michel Cass'e +1
We update Standard Big Bang Nucleosynthesis (SBBN) calculations on the basis of recent nuclear physics compilations (NACRE in particular), experimental and theoretical works. By a…
ISO spectroscopy of compact HII regions in the Galaxy. II Ionization and elemental abundances
N. L. Martin-Hernandez, E. Peeters, C. Morisset +9
Based on the ISO spectral catalogue of compact HII regions by Peeters et al. (2001), we present a first analysis of the hydrogen recombination and atomic fine-structure lines origi…
Cosmic Background dipole measurements with Planck-High Frequency Instrument
M. Piat, G. Lagache, J. P. Bernard +2
This paper discusses the Cosmic Background (CB) dipoles observations in the framework of the Planck mission. Dipoles observations can be used in three ways: (i) It gives a measurem…
HD 174005: another binary classified as lambda Boo
R. Faraggiana, M. Gerbaldi, P. Bonifacio
We demonstrate that HD 174005, a star recently classified as belonging to the lambda Boo group, is in reality a double lined spectroscopic binary; at some phases, the observed comp…
Rotational velocities of A-type stars I. Measurement of vsini in the southern hemisphere
F. Royer, M. Gerbaldi, R. Faraggiana +1
Within the scope of a Key Programme determining fundamental parameters of stars observed by HIPPARCOS, spectra of 525 B8 to F2-type stars brighter than V=8 have been collected at E…
Ices in Star-Forming Regions: First Results from VLT-ISAAC
E. F. van Dishoeck, E. Dartois, W. F. Thi +8
The first results from a VLT-ISAAC program on L- and M-band infrared spectroscopy of deeply-embedded young stellar objects are presented. The advent of 8-m class telescopes allows…
Statistical Physics for Cosmic Structures
Luciano Pietronero, Andrea Gabrielli, Francesco Sylos Labini
Ideas of Statistical Physics are very relevant for cosmic structures especially considering that the field is undergoing a period of exceptional development with many new data appe…
Blue irregular variable stars in the Small Magellanic Cloud from EROS2 : Herbig Ae/Be or classical Be stars ?
J. P. Beaulieu, W. J. de Wit, H. J. G. M. L. Lamers +6
Using data from the EROS2 microlensing survey, we report the discovery of two blue objects with irregular photometric behaviour of -0.4 mag on time scales of 20 to 200…
The Glass-like Universe: Real-space correlation properties of standard cosmological models
Andrea Gabrielli, Michael Joyce, Francesco Sylos Labini
After reviewing the basic relevant properties of stationary stochastic processes (SSP), defining basic terms and quantities, we discuss the properties of the so-called Harrison-Zel…
The X-ray surface brightness profiles of hot galaxy clusters up to z~0.8: evidence for self-similarity and constraints on Omega_0
M. Arnaud, N. Aghanim, D. M. Neumann
We study the ROSAT surface brightness profiles of a sample of 25 distant (0.3<z<0.83) hot (kT>3.5keV) clusters. For both open and flat cosmological models, the derived emission mea…
In.XS: project for a future spaceborne hard X-ray all-sky survey
P. B. Marty, J. Schultz, C. Bayer +13
The latest all-sky survey in hard X-ray band was performed by the HEAO-1 satellite (13-80 keV) with an angular resolution of 24x48 arcmin. A diffuse hard X-Ray background (HXB) was…
Discovery of a double ring in the core of eta Carinae
S. Hony, C. Dominik, L. B. F. M. Waters +8
We report the discovery of a double ring structure in the waist of the nebula surrounding eta Carinae. The rings are detected in the mid-IR dust continuum at wavelengths of 7.9, 11…
Line ratios for Helium-like ions: Applications to collision-dominated plasmas
D. Porquet, R. Mewe, J. Dubau +2
The line ratios R and G of the three main lines of He-like ions (triplet: resonance, intercombination, forbidden lines) are calculated for CV, NVI, OVII, NeIX, MgXI, and SiXIII. Th…
Spectra of binaries classified as lambda Boo stars
R. Faraggiana, M. Gerbaldi, P. Bonifacio +1
High angular resolution observations have shown that some stars classified as lambda Boo are binaries with low values of angular separation and magnitude difference of the componen…
A 1.2mm MAMBO/IRAM-30m Survey of Dust Emission from the Highest Redshift PSS Quasars
A. Omont, P. Cox, F. Bertoldi +3
We report 250 GHz (1.2mm) observations of redshift > 3.8 quasars from the Palomar Sky Survey (PSS) sample, using the Max-Planck Millimetre Bolometer (MAMBO) array at the IRAM 30-me…
Cosmological observations in scalar-tensor quintessence
Alain Riazuelo, Jean-Philippe Uzan
The framework for considering the astronomical and cosmological observations in the context of scalar-tensor quintessence in which the quintessence field also accounts for a time d…
Far-infrared dust opacity and visible extinction in the Polaris Flare
L. Cambresy, F. Boulanger, G. Lagache +1
We present an extinction map of the Polaris molecular cirrus cloud derived from star counts and compare it with the Schlegel et al. (1998) extinction map derived from the far--infr…
Synthesis of intermediate-mass elements in classical novae: from Si to Ca
Jordi Jose, Alain Coc, Margarita Hernanz
Thermonuclear runaways driven by accretion into degenerate white dwarf cores are the source that power classical nova outbursts. In this paper, we identify the dominant nuclear pat…
Photometric Constraints on Microlens Spectroscopy of EROS-BLG-2000-5
C. Afonso
We apply EROS photometric data to interpret previously published Keck and VLT spectra of the binary-microlens caustic-crossing event EROS-BLG-2000-5. We show that the VLT data impl…
Archeops: A High Resolution, Large Sky Coverage Balloon Experiment for Mapping CMB Anisotropies
A. Benoit, P. Ade, A. Amblard +3
Archeops is a balloon-borne instrument dedicated to measuring cosmic microwave background (CMB) temperature anisotropies at high angular resolution (8 arcminutes) over a large frac…
Shape of the 4.438 MeV gamma-ray line of ^12C from proton and alpha-particle induced reactions on ^12C and ^16O
J. Kiener, N. de Sereville, V. Tatischeff
We calculated in detail the angular distribution of gamma-rays and the resulting shape of the gamma-ray line produced by the nuclear deexcitation of the 4.439 MeV state of ^12C fol…
How accurately can the SZ effect measure peculiar cluster velocities and bulk flows?
N. Aghanim, K. M. Górski, J. -L. Puget
The Sunyaev-Zel'dovich effect is a powerful tool for cosmology that can be used to measure the radial peculiar velocities of galaxy clusters, and thus to test, and constrain, theor…
Dark Matter Search in the EDELWEISS experiment
A. Juillard, A. Benoit, L. Berge +33
The EDELWEISS Dark Matter Search uses low-temperature Ge detectors with heat and ionisation read-out to identify nuclear recoils induced by elastic collisions with WIMPs from the g…
Photoelectric effect on dust grains across the L1721 cloud in the rho Ophiuchi molecular complex
E. Habart, L. Verstraete, F. Boulanger +3
We present ISO-LWS measurements of the main gas cooling lines, C+ 158 mum and O 63 mum towards a moderate opacity molecular cloud (Av=3), L1721, illuminated by the B2 star nu Sco (…