You're welcome to use any tool that can arrange text on a page, but please submit something Canvas can open (Microsoft Word, Powerpoint, or a pdf).

Is this galaxy appear to be moving toward or away from us? What is the average redshift for the two stars you found, and for the two galaxies? How do the stellar redshifts compare to the galactic redshifts?įor the galaxy with the greatest redshift, are its spectral lines shifted to longer or shorter wavelengths?įor this galaxy, calculate the velocity that corresponds to it's redshift. A partir de Vr, on peut calculer la distance en année-lumière de cette galaxie avec la relation : Avec pour la constante de Hubble, l’une des dernière valeur connue : H 0 73,02 Mpc. The thumbnail images of the lowest and highest redshift galaxies from your sample, labelled with their redshift.Ī short paragraph answering the following questions: Le terme de l’équation juste après c est en fait le facteur de redshift z. The thumbnail images of the lowest and highest redshift stars from your sample, labelled with their redshift and velocity ( use the redshift equation, v = cz, as explained above ). If the table is blank, I'm sorry, but you should go back and find a new place by clicking the 'Use Constellations Notebook' button in step 2. Copy thumbnail images and rounded redshifts for the lowest and highest redshift galaxies into your document. Light requires no medium, and the Doppler shift for light traveling in vacuum depends only on the relative speed of the observer and source. Now change the class to galaxy (type GALAXY in the class box) without changing the other columns. For sound waves, however, the equations for the Doppler shift differ markedly depending on whether it is the source, the observer, or the air, which is moving. NLS equation is a robust model covering many different fields. Copy the thumbnail images for these two stars to your document and label them with their redshift- rounded to a few significant figures-and velocity ( use the redshift equation, v = cz, as explained above ). Recently, attempts have been made to use electromagnetic wave propagation theory based on nonlinear Schrödinger (NLS) equation as the principal physical process underlining astronomical redshift 1, 2.

Redshift equation