PLEASE HELP ME, THIS IS ASTRONOMY BUT CHEMISTRY IS CLOSE ENOUGH. please ma'am/sir/preferred pronoun, please help meA certain spectrum line has a wavelength of exactly 5800 Angstroms when measured in the laboratory. When observed in a certain star, that line is found to have a wavelength of 5796 Angstroms.What is its radial velocity, as a fraction of the speed of light? [vr/c = /0] Is the star approaching or receding from us?

Dllo= -vrc , where Dl = (l - lo) (l - lo) lo= -vrc where I=wavelength of line observed in…

Answered: A certain spectrum line has a…

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter9: Atomic Absorption And Atomic Fluorescence Spectrometry

Section: Chapter Questions

Problem 9.15QAP

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PLEASE HELP ME, THIS IS ASTRONOMY BUT CHEMISTRY IS CLOSE ENOUGH. please ma'am/sir/preferred pronoun, please help me

A certain spectrum line has a wavelength of exactly 5800 Angstroms when measured in the laboratory. When observed in a certain star, that line is found to have a wavelength of 5796 Angstroms.
What is its radial velocity, as a fraction of the speed of light? [vr/c = /0]

Is the star approaching or receding from us?

Expert Solution

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$\frac{D l}{l^{o}} = - \frac{v_{r}}{c}, w h e r e D l = (l - l^{o}) \frac{(l - l^{o})}{l^{o}} = - \frac{v_{r}}{c} w h e r e I = w a v e l e n g t h o f l i n e o b s e r v e d i n a c e r t a i n s t a r l^{o} = w a v e l e n g t h o f l i n e m e a s u r e d i n t h e l a b o r a t o r y c = w a v e l e n g t h o f l i g h t v_{r =} r a d i a l v e l o c i t y$

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