Physics
Scientific paper
Dec 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997hst..prop.7338f&link_type=abstract
HST Proposal ID #7338
Physics
Hst Proposal Id #7338 Cosmology
Scientific paper
We proposed to use WFPC2 and NICMOS to observe the quadruple gravitational lens system MG 0414+0534, a QSO at z = 2.64 that is lensed by a single elliptical galaxy. However, we limit our plans to the 5 orbits that the TAC imposed for us to concentrate on NICMOS. We recently observed the system with HST and WFPC2/PC1 {Falco, Leh'ar & Shapiro 1997, AJ 112, 897; hereafter FLS96}. We measured a light profile for the lens galaxy G, and discovered a blue arc connecting the 3 brightest images of the QSO. Although our elliptical single-potential lens models account qualitatively for all the properties of the system, they fail quantitatively, with fits that achieve only chi^2/N_dof 5. Adding an independent shear axis allows a good fit to the data, but the physical source of such a shear remains to be determined. We intend to investigate whether the primary lens galaxy and its dark halo suffice to explain the observed lensing geometry or whether there are significant external tidal perturbations. We propose to use NICMOS to obtain a high-SNR determination of the brightness profile of the lens galaxy in the J, H and K bands. We would also obtain IR fluxes for the images that we would use to study extinction in this system, and to determine whether it originates in the lens galaxy or in the host galaxy of the lensed QSO. SAO proposal ID # P3878-9-96
No associations
LandOfFree
A study of the gravitational lensing potential in MG 0414+0534 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A study of the gravitational lensing potential in MG 0414+0534, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A study of the gravitational lensing potential in MG 0414+0534 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-895499