Cepheid Pulsations Resolved by the VLTI

Details Cepheid Pulsations Resolved by the VLTI Cepheid Pulsations Resolved by the VLTI

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004msngr.117...53k&link_type=abstract

The Messenger (ISSN0722-6691), No.117, p. 53-57 (September 2004)

Physics

3

Scientific paper

The very high spatial resolution provided by the VLTI makes it possible to measure directly the change in angular diameter of several southern Cepheids over their pulsation cycle. When combined with radial velocity measurements, this allowed us to measure precisely their distances in a quasi-geometrical way. This is essential information to calibrate the Cepheid's Period-Luminosity law, as well as the Period-Radius and Surface Brightness-Colour relations.

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