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news:the_born_investigator_of_the_heavens [2015/04/02 20:09]
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news:the_born_investigator_of_the_heavens [2015/04/02 20:09] (current)
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-The born investigator of the heavens.+The born investigator of the heavens
  
 Piet van der Kruit (Kapteyn Institute, Groningen) Piet van der Kruit (Kapteyn Institute, Groningen)
 +
 4pm, Tuesday 14th April 2015 4pm, Tuesday 14th April 2015
  
 I just published a comprehensive biography of Jacobus Cornelius Kapteyn (1851-1922) with Springer. in the colloquium I will trace Kapteyn'​s life from his birth in Barneveld through his mathematics studies ​ in Utrecht, his position as `observator'​ at Leiden Observatory,​ followed by his appointment in 1878 in Groningen. I then will give an overview of his scientific work, including the Cape Photographic Durchmusterung,​ his work on stellar parallaxes, Star Streams and the Plan of Selected Areas. I will present the Kapteyn Universe. This is both a model for the distribution of stars as well as a discussion of what we would now call the dynamics. ​ It was based on Shapley'​s incorrect deduction that interstellar absorption was negligible and will briefly review what would have happened had Kapteyn adopted his own determination of interstellar absorption. I just published a comprehensive biography of Jacobus Cornelius Kapteyn (1851-1922) with Springer. in the colloquium I will trace Kapteyn'​s life from his birth in Barneveld through his mathematics studies ​ in Utrecht, his position as `observator'​ at Leiden Observatory,​ followed by his appointment in 1878 in Groningen. I then will give an overview of his scientific work, including the Cape Photographic Durchmusterung,​ his work on stellar parallaxes, Star Streams and the Plan of Selected Areas. I will present the Kapteyn Universe. This is both a model for the distribution of stars as well as a discussion of what we would now call the dynamics. ​ It was based on Shapley'​s incorrect deduction that interstellar absorption was negligible and will briefly review what would have happened had Kapteyn adopted his own determination of interstellar absorption.
 The book is accompanied by a special website: www.astro.rug.nl/​JCKapteyn. The book is accompanied by a special website: www.astro.rug.nl/​JCKapteyn.