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The ESA/ESO Exercise Series booklets English - Exercise 7
In this exercise we measure the period and apparent magnitudes of Cepheid variables in the galaxy M100 on FITS images with the free European Hands-On Universe software SalsaJ. The absolute magnitude is derived using the Period-Luminosity relation and the distance to M100 can then be determined using the distance relation. Finally we calculate a value for the Hubble constant (using a value for the recession velocity of M100 observed by other scientists) and estimate the age of the Universe. English Version. LASER PRINT. Full-colour.
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Crédit:ESA/Hubble & ESO
About the Material
| Id: | edu_0060 |
| Date de publication: | 19 mars 2012 17:07 |
| Dimensions: | 29.7 cm (W) x 21 cm (H) x 0.3 cm (D) |
| Pages: | 28 |
| Cover: | Softcover |
| Langage: | English |
