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|
|Size:||800 x 629 px|
About the Object
|Type:||• Milky Way : Star : Type : Variable|
• X - Stars