ar X iv : a st ro - p h / 02 04 26 2 v 1 1 6 A pr 2 00 2 Cosmology Rounding the Cape

ar X iv : a st ro - p h / 02 04 03 6 v 1 2 A pr 2 00 2 Investigating the Flame Microstructure in Type

ar X iv : a st ro - p h / 02 04 26 5 v 1 1 6 A pr 2 00 2 A Large Area CCD Camera for the Schmidt Telescope at the Venezuelan National Astronomical Observatory

We have designed, constructed and put into operation a large area CCD camera that covers a large fraction of the image plane of the 1 meter Schmidt telescope at Llano del Hato in Venezuela. The camera consists of 16 CCD devices arranged in a 4 × 4 mosaic covering 2.3 × 3.5 of sky. The CCDs are 2048 × 2048 LORAL devices with 15μm pixels. The camera is optimized for drift scan photometry and obje...

ar X iv : a st ro - p h / 02 04 01 7 v 1 1 A pr 2 00 2 CMB and Cosmological Parameters : Current Status and Prospects .

The last years have been an exciting period for the field of the Cosmic Microwave Background (CMB) research. With recent CMB balloon-borne and ground-based experiments we are entering a new era of ’precision’ cosmology that enables us to use the CMB anisotropy measurements to constrain the cosmological parameters and test new theoretical scenarios.

ar X iv : a st ro - p h / 02 10 04 2 v 1 1 O ct 2 00 2 Variable Speed of Light Theories

Two variable speed of light models and their physical consequences are investigated. Talk given at the workshop on varying fundamental constants, JENAM 2002, Porto, Portugal, September 2-7, 2002. To be published in the proceedings by Kluwer publications. 1. Varying Speed of Light Cosmology: An Alternative to In-

ar X iv : a st ro - p h / 02 04 38 1 v 1 23 A pr 2 00 2 Chemical Processes in Cometary Comae

Recent developments in the chemical modelling of cometary comae are described. We discuss the cyanide chemistry and present new HCN observations of the recent comet C/2002 C1 (Ikeya-Zhang). The connection between interstellar and cometary organic molecules is discussed from the perspective of recent theories of interstellar gas-grain chemistry.