90 citations · 168 across the 5 of their papers we have counts for
5 papers
World Space Observatory/Ultraviolet (WSO/UV): Progress Report
W. Wamsteker, H. J. Haubold
The World Space Observatory/Ultraviolet (WSO/UV) represents a new mission implementation model for large space missions for astrophysics. The process has been brought up to enable,…
Multiwavelength Monitoring of the Narrow-Line Seyfert 1 Galaxy Akn 564. II. Ultraviolet Continuum and Emission-line Variability
S. Collier, D. M. Crenshaw, B. M. Peterson +15
We present results of an intensive two-month campaign of approximately daily spectrophotometric monitoring of the narrow-line Seyfert 1 galaxy Akn 564 with HST. The fractional vari…
The INES System III: Evaluation of IUE NEWSIPS High Resolution Spectra
R. Gonzalez-Riestra, A. Cassatella, E. Solano +2
This paper discusses the overall quality of IUE high resolution data processed with the NEWSIPS software in terms of flux and wavelength accuracy. It also describes the processing…
30 years of multi-wavelength observations of 3C 273
M. Turler, S. Paltani, T. J. -L. Courvoisier +14
We present a wide multi-wavelength database of most observations of the quasar 3C 273 obtained during the last 30 years. This database is the most complete set of observations avai…
Patchy intergalactic HeII absorption in HE 2347-4342. - The possible discovery of the epoch of He-reionization
D. Reimers, S. Koehler, L. Wisotzki +3
We report on observations of redshifted HeII 304 A absorption in the QSO HE 2347-4342 (z=2.885, V=16.1) with the GHRS on board HST (FWHM=0.7 A). At the expected position of HeII 30…