6 papers · 1 filter
A far UV study of interstellar gas towards HD34078: high excitation H2 and small scale structure - Based on observations performed by the FUSE mission and at the CFHT telescope
P. Boisse, F. Le Petit, E. Rollinde +5
To investigate the presence of small scale structure in the spatial distribution of H2 molecules we have undertaken repeated FUSE UV observations of the runaway O9.5V star, HD34078…
Small scale structure in molecular gas from multi-epoch observations of HD 34078
E. Rollinde, P. Boisse, S. R. Federman +1
We present spectroscopic observations of the runaway reddened star HD 34078 acquired during the last three years at Observatoire de Haute Provence and McDonald Observatory as well…
FUSE Observations towards HD 34078 Detection of highly excited H2 and HD
Franck Le Petit, Patrick Boisse, Guillaume Pineau des Forets +4
We present FUSE observations of the extincted O9.5 star, HD 34078. The 19 first levels of H2 are detected (i.e. from J=0 to v=1, J=5) as well as HD in its two first levels. The exc…
A HST Spectroscopic study of QSOs with intermediate redshift damped Lyman-alpha systems
Patrick Boisse, Vincent Le Brun, Jacqueline Bergeron +1
We present HST spectra for a sample of six QSOs with intermediate redshift (z_a < 1) damped Ly-alpha systems. These observations aim at measuring the HI column density and detect m…
The nature of intermediate-redshift damped Ly-alpha absorbers
V. Le Brun, J. Bergeron, P. Boisse +1
We present HST/WFPC2 high-spatial resolution images in the R and B bands of the close environment of the sightlines to seven quasars which spectra show either a damped Ly-alpha abs…
Observationnal constraints on the nature of the low redshift Lyman-alpha absorbers
V. Le Brun, J. Bergeron, P. Boisse
We present results from a spectroscopic and imaging survey of galaxies in the fields of quasars from the HST Quasar Absorption Line Key Project. The aim of this survey is to identi…