Having nothing to do with trigonometry, what type of parallaxes use the width of absorption lines to estimate the star's luminosity and size and distance?
A.bolometric
B.photometric
C.spectroscopic
D.holographic
E.video metric
http://en.wikipedia.org/wiki/Astronomical_spectroscopy
bolometric
what?
americans west
The correct answer is C. spectroscopic.
To find the answer, you can refer to the provided link to the Wikipedia page on Astronomical Spectroscopy. On this page, you can find information about the different types of parallaxes used in astronomy. By reading through the page, you will come across the various techniques used for estimating a star's luminosity, size, and distance.
One of these techniques mentioned is spectroscopy, which involves the study of the interaction between light and matter. Spectroscopic parallax is a method that estimates a star's distance by analyzing the absorption lines in its spectrum. By measuring the width of these absorption lines, astronomers can make inferences about the star's luminosity and size. Therefore, the correct answer is C. spectroscopic.
It is important to carefully read through the provided resource to gain a comprehensive understanding of the topic and locate the specific answer.