Hans Heinrich Landolt

An Atlas of Spectrophotometric Landolt Standard Stars

We present CCD observations of 102 Landolt standard stars obtained with the R-C spectrograph on the CTIO 1.5 m telescope. Using stellar atmosphere models we have extended the flux points to our six spectrophotometric secondary standards, in both the blue and the red, allowing us to produce flux-calibrated spectra that span a wavelength range from 3050 Å to 1.1 μm. We find mean differences betwe...

Hans Arnold Heilbronn 1908-1975 Hans

Johann Heinrich Dierbach (1788–1845)

his eighties. In 1835, he married and settled in Paris as a teacher at the Conservatoire des Arts et Metiers, while conducting agricultural experiments with his brother-in-law on an estate in the Alsace, which was sustained economically by revenues from oil-bearing sands. Although McCosh's account of the collaboration with Dumas and the fat controversy with Liebig does not replace that given by...

Landolt - Börnstein , New Series , Astronomy and Astrophysics ,

Hans Meinhardt

Hans Meinhardt is a theoretical developmental biologist working at the Max-Planck-Institute for Developmental Biology in Tübingen. He has pioneered the use of mathematical modelling of embryonic pattern formation. He received his PhD from the University of Cologne in Physics. For a postdoctoral fellowship, he went to the European High Energy Laboratory CERN at Geneva. By collaborating in an exp...