Numerical investigation of lenses with substructures using the perturbative method (2008)
Peirani, Sébastien, Alard, Christophe, Pichon, Christophe, Gavazzi, Raphael, Aubert, Dominique
We present a statistical study of the effects induced by substructures on the deflection potential of dark matter halos in the strong lensing regime. This investigation is based on the pertubative...
Numerical investigation of lenses with substructures using the perturbative method (2008)
Peirani, Sébastien, Alard, Christophe, Pichon, Christophe, Gavazzi, Raphael, Aubert, Dominique
We present a statistical study of the effects induced by substructures on the deflection potential of dark matter halos in the strong lensing regime. This investigation is based on the pertubative...
Numerical investigation of lenses with substructures using the perturbative method (2008)
Peirani, Sébastien, Alard, Christophe, Pichon, Christophe, Gavazzi, Raphael, Aubert, Dominique
We present a statistical study of the effects induced by substructures on the deflection potential of dark matter halos in the strong lensing regime. This investigation is based on the pertubative...
Numerical investigation of lenses with substructures using the perturbative method (2008)
Peirani, Sébastien, Alard, Christophe, Pichon, Christophe, Gavazzi, Raphael, Aubert, Dominique
We present a statistical study of the effects induced by substructures on the deflection potential of dark matter halos in the strong lensing regime. This investigation is based on the pertubative...
Numerical investigation of lenses with substructures using the perturbative method (2008)
Peirani, Sébastien, Alard, Christophe, Pichon, Christophe, Gavazzi, Raphael, Aubert, Dominique
We present a statistical study of the effects induced by substructures on the deflection potential of dark matter halos in the strong lensing regime. This investigation is based on the pertubative...
Numerical investigation of lenses with substructures using the perturbative method (2008)
Peirani, Sébastien, Alard, Christophe, Pichon, Christophe, Gavazzi, Raphael, Aubert, Dominique
We present a statistical study of the effects induced by substructures on the deflection potential of dark matter halos in the strong lensing regime. This investigation is based on the pertubative...
Numerical investigation of lenses with substructures using the perturbative method (2008)
Peirani, Sébastien, Alard, Christophe, Pichon, Christophe, Gavazzi, Raphael, Aubert, Dominique
We present a statistical study of the effects induced by substructures on the deflection potential of dark matter halos in the strong lensing regime. This investigation is based on the pertubative...
Metallicity gradients in the Sagittarius dwarf spheroidal Galaxy (2005)
Metallicity gradients in the Sagittarius dwarf Galaxy (Sgr) are investigated by using infrared photometric data from the 2MASS survey. To search for metallicity effects, the giant branch in a field...
The Sagittarius dwarf galaxy as a microlensing target (2001)
Cseresnjes, Patrick, Alard, Christophe
We estimate the optical depth, time-scale distribution and fraction of microlensing events originating from sources in the Sagittarius dwarf galaxy (Sgr) lensed by deflectors in the Milky Way. These...
Metallicity gradients in the Sagittarius dwarf spheroidal Galaxy (2001)
Metallicity gradients in the Sagittarius dwarf Galaxy (Sgr) are investigated by using infrared photometric data from the 2MASS survey. To search for metallicity effects, the giant branch in a field...
Metallicity gradients in the Sagittarius dwarf spheroidal Galaxy (2001)
Metallicity gradients in the Sagittarius dwarf Galaxy (Sgr) are investigated by using infrared photometric data from the 2MASS survey. To search for metallicity effects, the giant branch in a field...
Structure of the Sagittarius dwarf galaxy at low Galactic latitudes (2000)
Cseresnjes, Patrick, Alard, Christophe, Guibert, Jean
We report the detection of $\sim$ 1500 RR Lyrae of Bailey type ab located in the Sagittarius dwarf galaxy (Sgr). These variables have been detected on two ESO Schmidt fields centred on (l,b)=(3.1...
1. PERSONNEL During the reporting year the research staff consisted of (1998)
Neta Bahcall, Renyue Cen, Bruce Draine, Edward Fitzpatrick, Jeremy Goodman, J. Richard Gott, ...
This report provides a summary and bibliography for the research activities at the Princeton University Observatory and Department of Astrophysical Sciences during the period July 1, 1997 to June 30,...