Photometric redshifts for the CFHTLS-Wide (2008)
Brimioulle, Fabrice, Lerchster, Michael, Seitz, Stella, Bender, Ralf, Snigula, Jan
We want to derive bias free, accurate photometric redshifts for those fields of the CFHTLS-Wide data which are covered in the u*, g', r', i' and z' filters and are public on January 2008. These are...
SDSS J120923.7+264047: A new massive galaxy cluster with a bright giant arc (2008)
Ofek, Eran O., Seitz, Stella, Klein, Felix
Highly magnified lensed galaxies allow us to probe the morphological and spectroscopic properties of high-redshift stellar systems in great detail. However, such objects are rare, and there are only...
Maximum Likelihood Cluster Reconstruction (2007)
Matthias Bartelmann, Ramesh Narayan, Stella Seitz, Peter Schneider
We present a novel method to reconstruct the mass distribution of galaxy clusters from their gravitational lens effect on background galaxies. The method is based on a least-x 2 fit of the...
Entropy-regularized Maximum-Likelihood cluster mass reconstruction (2007)
Stella Seitz, Peter Schneider, Matthias Bartelmann
We present a new method for reconstructing two-dimensional mass maps of galaxy clusters from the image distortion of background galaxies. In contrast to most previous approaches, which directly...
Jochen Heidt, Armin Gabasch, Stella Seitz, Ralf Bender, Klaus J. Fricke
Astronomy & Astrophysics manuscript no. (will be inserted by hand later)
The puzzle of the Lyα galaxies: new results from the VLT (2007)
Tapken, Christian, Appenzeller, Immo, Gabasch, Armin, Heidt, Jochen, Hopp, Ulrich, Bender, Ralf, ...
The puzzle of the Lya Galaxies: new results from the VLT (2007)
Tapken, Christian, Appenzeller, Immo, Gabasch, Armin, Heidt, Jochen, Hopp, Ulrich, Bender, Ralf, ...
Observations of high-redshift galaxies show that at early cosmic epochs the cosmic UV radiation field appears to be dominated by small galaxies with strong Ly-alpha emission. Although usually small...
The Wendelstein Calar Alto Pixellensing Project (WeCAPP): The M31 Variable Star Catalogue (2005)
Fliri, Juergen, Riffeser, Arno, Seitz, Stella, Bender, Ralf
In this paper we present the WeCAPP variable star catalogue towards the bulge of M31. The observations of the WeCAPP microlensing survey (optical R and I bands) during three years (2000-2003) result...
The Wendelstein Calar Alto Pixellensing Project(WeCAPP): First MACHO Candidates (2003)
Riffeser, Arno, Fliri, Juergen, Bender, Ralf, Seitz, Stella, Goessl, Claus A.
We report the detection of the first 2 microlensing candidates from the Wendelstein Calar Alto Pixellensing Project (WeCAPP). Both are detected with a high signal-to-noise-ratio and were filtered out...
Riffeser, Arno, Fliri, Juergen, Goessl, Claus A., Bender, Ralf, Hopp, Ulrich, Baernbantner, Otto, ...
We present WeCAPP, a long term monitoring project searching for microlensing events towards M 31. Since 1997 the bulge of M 31 was monitored in two different wavebands with the Wendelstein 0.8 m...
Entropy-regularized Maximum-Likelihood cluster mass reconstruction (1998)
Seitz, Stella, Schneider, Peter, Bartelmann, Matthias
We present a new method for reconstructing two-dimensional mass maps of galaxy clusters from the image distortion of background galaxies. In contrast to most previous approaches, which directly...
A new finite-field mass reconstruction algorithm (1998)
Seitz, Stella, Schneider, Peter
A new method for the reconstruction of the projected mass distribution of clusters of galaxies from the image distortion of background galaxies is discussed. This method is essentially equivalent to...
Untersuchungen zum schwachen Linseneffekt auf Quasare und Galaxien / (1997)
München, Universiẗat, Diss., 1997.
The Mass Distribution of CL0939+4713 obtained from a `Weak' Lensing Analysis of a WFPC2 image (1996)
Seitz, Carolin, Kneib, Jean-Paul, Schneider, Peter, Seitz, Stella
The image distortions of high-redshift galaxies caused by gravitational light deflection of foreground clusters of galaxies can be used to reconstruct the two-dimensional surface mass density of...
Maximum-Likelihood Cluster Recontruction (1996)
Bartelmann, Matthias, Narayan, Ramesh, Seitz, Stella, Schneider, Peter
We present a novel method to recontruct the mass distribution of galaxy clusters from their gravitational lens effect on background galaxies. The method is based on a least-chisquare fit of the...
Seitz, Stella, Schneider, Peter
Gravitational light deflection can distort the images of distant sources by its tidal effects. The population of faint blue galaxies is at sufficiently high redshift so that their images are...
The Density of 1-Jansky Sources Around Zwicky Clusters (1994)
Seitz, Stella, Schneider, Peter
In a recent paper by Rodrigues-Williams \& Hogan (RH94), a correlation between high-redshift, optically-selected QSOs and Zwicky clusters was reported at a very high significance level. Due to the...
Light Propagation in Arbitrary Spacetimes and the Gravitational Lens Approximation (1994)
Seitz, Stella, Schneider, Peter, Ehlers, Juergen
We reformulate the transport equation which determines the size, shape and orientation of infinitesimal light beams in arbitrary spacetimes. The behaviour of such light beams near vertices and...
Light-propagation in arbitrary spacetimes and the gravitational lens approximation (1994)
Seitz, Stella, Schneider, Peter, Ehlers, Jürgen
We reformulate the transport equation which determines the size, shape and orientation of infinitesimal light beams in arbitrary spacetimes. The behaviour of such light beams near vertices and...