ar X iv : a st ro - p h / 01 07 53 7 v 1 2 7 Ju l 2 00 1 POWER SPECTRA FOR GALAXY SHAPE CORRELATIONS

ar X iv : a st ro - p h / 01 07 53 7 v 2 6 S ep 2 00 2 POWER SPECTRA FOR GALAXY SHAPE CORRELATIONS

It has recently been argued that the observed ellipticities of galaxies may be determined at least in part by the primordial tidal gravitational field in which the galaxy formed. Long-range correlations in the tidal field could thus lead to an ellipticity-ellipticity correlation for widely separated galaxies. I present results of a calculation of the angular power spectrum of intrinsic galaxy s...

ar X iv : a st ro - p h / 01 11 13 6 v 1 7 N ov 2 00 1 1 Active Optics in Modern , Large Optical Telescopes

ar X iv : a st ro - p h / 06 07 53 9 v 1 2 4 Ju l 2 00 6 CLUSTERS AND THE COSMIC WEB : Identifying the location of filaments

ar X iv : a st ro - p h / 01 05 53 8 v 1 3 0 M ay 2 00 1 Circumnuclear stellar population , morphology and environment of Seyfert 2 galaxies : an evolutionary scenario

We investigate the relation between the characteristics of the circumnuclear stellar population and both the galaxy morphology and the presence of close companions for a sample of 35 Seyfert 2 nuclei. Fifteen galaxies present unambiguous signatures of recent episodes of star formation within ≈300 pc from the Jansky Fellow Gemini Fellow

ar X iv : a st ro - p h / 01 07 38 4 v 1 1 9 Ju l 2 00 1 Optimal detection of sources on a homogeneous & isotropic

Received ; accepted – 2 – ABSTRACT This paper introduces the use of pseudo-filters that optimize the detec-tion/extraction of sources on a background. We assume as a first approach that such sources are described by a spherical (central) profile and that the background is represented by a homogeneous & isotropic random field. We make an n-dimensional treatment making emphasis in astrophysical a...