Period-Luminosity relation for Cepheids

Period-Luminosity relation in the V band, as deduced from the interferometric observations of Cepheids and the HST parallax measurement of Delta Cep. The green line is the fitted P-L relation, assuming the slope from previous authors (Gieren et al.; 1998, ApJ, 496, 17). The agreement between the model and the measurements is excellent, in particular for the high-precision measurements of Delta Cep and L Car.



About the Image

Release date:29 October 2004
Related releases:eso0432
Size:800 x 629 px

About the Object

Type:• Milky Way : Star : Type : Variable

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