To find the distance to a star (in parsecs, pc) from its mea…

To find the distance to a star (in parsecs, pc) from its measured parallax (in arc-seconds, arcsec), astronomers use the following simple formula. d(pc) =1p(arcsec){“version”:”1.1″,”math”:”d(pc) =1p(arcsec)”} A star has a parallax of 0.330 arcsec. How far away is it?

Explain how scientists using the spectral properties of star…

Explain how scientists using the spectral properties of starlight to measure stellar properties such as temperature, stellar class, size and composition. Your description should include 3 specific measurements that scientist perform based on spectral analysis. Your response should be 5 – 8 complete sentences following the rubric for quiz essay responses.