vendredi 17 mai 2013, par Wolfgang Gieren (Universidad de Concepcion, Chile)
Jeudi 27 juin 2013 à 11h00 , Lieu : Salle de conférence du bât. 17
I will briefly discuss the basic uncertainties affecting the Cepheid method to set up the cosmic distance scale, and derive the Hubble constant. I will then report on the work of our group to improve on one crucial aspect of the Cepheid method, which is to determine an accurate distance to the Large Magellanic Cloud as the best-suited fiducial galaxy to measure Cepheid distances to more distant galaxies, using a unique sample of late-type eclipsing binary systems in the LMC.
I will also report on an independent determination of the LMC distance from an application of the infrared surface brightness technique on LMC Cepheids, which yields a check on the distance result from the eclipsing binaries.
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