FAINT OBJECTS; GRAVITATIONAL LENSES; ANGULAR RESOLUTION; QUASARS; STELLAR SPECTRA; POINT SPREAD FUNCTIONS; IMAGE PROCESSING; ASTRONOMICAL PHOTOGRAPHY; ASTRONOMICAL PHOTOMETRY; GALAXIES; SPECTROGRAPHS; COSMIC RAYS; DATA REDUCTION; HUBBLE SPACE TELESCOPE; CAMERAS; HIGH RESOLUTION
Abstract :
[en] High angular resolution Principle Component Image (PC1) images of the gravitational lens systems HE 1104-1805 and J03.13 are presented. Using a method described in Remy et al. (1997a), optimal TinyTim Point Spread Function (PSFs) are constructed to fit at best the lensed point-like components. The derived photometry of the GL components and the detection of the lens galaxy for HE 1104-1805 are discussed. Textbook case Faint Object Spectrograph (FOS) spectra of J03.13 A and B clearly show that this double QSO is a cosmic mirage.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Remy, M.
Claeskens, Jean-François ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Surdej, Jean ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Language :
English
Title :
HST observations of the gravitational lens systems HE 1104-1805 and J03.13
Publication date :
01 January 1997
Audience :
International
Main work title :
The 1997 HST Calibration Workshop with a New Generation of Instruments
