ar X iv : a st ro - p h / 03 11 58 3 v 1 2 6 N ov 2 00 3 Detection of cool dust around the G 2 V star HD 107146

ar X iv : a st ro - p h / 03 11 44 5 v 1 1 9 N ov 2 00 3 Multiscale self - organized criticality and powerful X - ray flares

A combination of spectral and moments analysis of the continuous X-ray flux data is used to show consistency of statistical properties of the powerful solar flares with 2D BTW prototype model of self-organized criticality.

ar X iv : a st ro - p h / 06 11 54 4 v 1 1 6 N ov 2 00 6 Discovery of a nearby twin of SN 1987 A ’ s nebula around the

ar X iv : a st ro - p h / 03 11 60 3 v 1 2 7 N ov 2 00 3 A search for emission line galaxies at z = 6 . 5

We are carrying out a search for Lyα emitting galaxies at z = 6.5 employing slitless spectroscopy at the VLT. In our 43 arcmin field we find three isolated single emission lines with SEDs consistent with line emitting galaxies at z = 6.5.

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 / 03 05 16 3 v 1 9 M ay 2 00 3 Submitted to ApJ The Massive Triple Star System HD 16429 A

HD 16429 A is a triple star system consisting of a single-lined spectroscopic binary and a widely separated third component, previously identified via speckle interferometry. Here I present the first orbital elements for the unblended spec-troscopic binary as well as estimates of the spectral types and relative flux contributions for each visible component based upon a Doppler tomographic recon...