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The ultraviolet absorption spectrum. of the z=2.72 QSO HS 1700+6416 II. Sulfur and neon in heavy-element absorbing systems.
Reimers, D.; Wamsteker, W.; Koehler, S.
We present ultraviolet spectra of the bright high-redshift QSO HS 1700+6416 obtained with the Goddard High Resolution Spectrograph (GHRS) onboard the Hubble Space Telescope. These observations cover the wavelength range 1160-1680A at a resolution R=~2000 with a maximum signal-to-noise per pixel of 8 in the raw data and 15 in smoothed data. The pre…
Extended fine structure and continuum emission from S 140/L 1204.
Burgdorf, M.; Serra, G.; Barlow, M. J. +24 more
Grating spectra, covering the wavelength range 45 to 187µm have been taken with the ISO Long Wavelength Spectrometer (LWS) at a series of pointing positions over the S 140 region, centred on the cluster of embedded young stellar objects at the south-west corner of the L1204 molecular cloud. Extended emission from [CII]158µm and [OI]63&…
Latitude dependence of Solar Wind plasma thermal noise: ULYSSES radio observations.
Maksimovic, M.; Issautier, K.; Moncuquet, M. +2 more
Thermal noise spectroscopy was performed on the URAP radio receiver data for the first time out of the ecliptic during the Ulysses spacecraft transit from southern to northern heliolatitudes. We present the results on the solar wind electron density and bulk temperature obtained from -43°S to +43°N. They indicate a rough symmetry of the solar wind…
A wind in the intermediate polar candidate 1 H0551-819?
Bonnet-Bidaud, J. M.; Buckley, D. A. H.; Mouchet, M. +3 more
IUE observations of the cataclysmic variable 1 H0551-819 obtained at three different epochs reveal P-Cygni type profiles in the CIV line. The shape of these profiles is modulated with the orbital period of the system. The observations suggest the presence of a wind in the system. We considered several models of wind, disc and continuum emitting ho…
ISOCAM CVF observations of the Quintuplet and Object#17 clusters near the Galactic Center.
Kawara, K.; Onaka, T.; Okuda, H. +2 more
Two fields near the Galactic Center, containing the Quintuplet and Object #17 star-clusters, have been imaged with the ISOCAM circular variable filters (CVFs) in the wavelength range of 2.47-3.08µm and 3.99-9.09µm. Emission of [Ar II] 6.99µm is detected in the "pistol-shaped" H II region (G0.15-0.05) to the south of the Quintuple…
Interplanetary discontinuities in corotating streams and their interaction regions.
Balogh, A.; Tsurutani, B. T.; Goldstein, B. E. +3 more
In this study, we investigate the discontinuity properties in the low latitude corotating stream regions which are encountered during Ulysses traveling from the south to north heliographic poles in 1995. Through the occurrence rates of directional discontinuities and tangential discontinuities, we find that there are three different regions around…
Proper motion study of the globular cluster M 92.
Tucholke, H. -J.; Scholz, R. -D.; Brosche, P.
We present proper motions for stars in the field of the galactic globular cluster NGC6341 (M92). This study continues the series of papers from the Bonn programme of globular cluster proper motions. Plates taken with the Bonn double refractor and the Rozhen observatory 2m Ritchey-Chretien telescope with a maximal epoch difference of 94years were u…
Optical spectra of ζ Aurigae systems. VIII. The chromosphere of HR6902.
Schroeder, K. -P.; Griffin, R. E. M.; Marshall, K. P.
We analyze chromospheric spectra of the ζ Aur system HR6902 observed during its 1987 and 1989 eclipses, deriving empirical column densities, number densities and ionization characteristics for 5 distinct heights within the giant primary's chromosphere. Column densities for CaII are determined from K-line profiles and for other ions by a curve-of-g…
ISOCAM imaging of AG CAR and HR Car.
Waters, L. B. F. M.; Trams, N. R.; Voors, R. H. M.
We present infrared images obtained with the ISOCAM instrument on board the Infrared Space Observatory of two Luminous Blue Variables (AG Car and HR Car). The images were obtained at eight wavelengths between 8.5 and 16µm using the Circular Variable Filters (CVFs), with a pixel size of 6 by 6arcsec and a total field of view of 192 by 192arcs…
Interstellar atom and pick-up ion fluxes along the ULYSSES flight-path.
Fichtner, H.; Mall, U.; Rucinski, D.
Neutral atom and pick-up ion flux computations using a hot model for hydrogen, helium, oxygen and neon along the trajectory of the Ulysses spacecraft, including predictions for the Extended Mission are reported and discussed. The feasibility of using absolute pick-up ion fluxes and pick-up ion flux ratios to derive the orientation of the heliosphe…