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.

Crédit:

ESO

À propos de l'image

Identification:eso0432d
Type:Graphique
Date de publication:29 octobre 2004
Communiqués de presse en rapport:eso0432
Taille:800 x 629 px

À propos de l'objet

Nom:Stars
Type:Milky Way : Star : Type : Variable
Catégorie:Stars

Image Formats

Grand JPEG
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