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- Centre National de la Recherche ScientifiqueFR339 papers
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19 papers · 1 filter
Detection of negative superhumps in a LMXRB -- an end to the long debate on the nature of V1405 Aql (X1916-053)
A. Retter, Y. Chou, T. Bedding
The detection of two similar periodicities (3001 and 3028 s) in the light curve of V1405 Aql, a low mass X-ray Binary (LMXRB), has attracted the attention of many observers. Two ba…
No disks around low-mass stars and brown dwarfs in the young sigma Orionis cluster?
J. M. Oliveira, R. D. Jeffries, M. J. Kenyon +2
We report on the analysis of 2MASS near-infrared data of a sample of low-mass stars and brown dwarfs in the sigma Orionis cluster. Youth and cluster membership have been spectrosco…
The host galaxy of GRB010222: The strongest damped Lyman-alpha system known
I. Salamanca, L. Kaper, P. M. Vreeswijk +6
Analysis of the absorption lines in the afterglow spectrum of the gamma-ray burst GRB010222 indicates that its host galaxy (at a redshift of z=1.476) is the strongest damped Lyman-…
Understanding the LMXB X2127+119 in M15 I. X-ray eclipses and dips
Zach Ioannou, T. Naylor, A. P. Smale +2
We present X-ray observations of the high-inclination low-mass X-ray binary system X2127+119 (AC211) in the globular cluster M15 (NGC 7078). The observations consist of data acquir…
A spectroscopic survey of stars brighter than B=16.6 magnitude in omega Centauri
Jacco Th. van Loon
Using the 2dF multi-fibre instrument at the AAT, we have carried out a spectroscopic survey of over 1500 stars brighter than B=16.6 mag, which have been confirmed by the proper mot…
A search for radio emission from Galactic supersoft X-ray sources
R. N. Ogley, S. Chaty, M. Crocker +5
We have made a deep search for radio emission from all the northern hemisphere supersoft X-ray sources using the VLA and MERLIN telescopes, at 5 and 8.4 GHz. Three previously undet…