E-lab 33 magnitudes(1 (2) - Compatibility Mode Home Insert Draw Design Layout Re
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E-lab 33 magnitudes(1 (2) - Compatibility Mode Home Insert Draw Design Layout References MailingsReview View Help ell me what you want to do Share s Cut Find? Arial 12A A Aa Copy Dictate Format Painter BI U x, x Emphasis Heading 1 1Nomal StrongSubtlel No Spac.... Select Clipboard Paragraph Editing Voice 4. Spectroscopic Parallax: Here is a case where we find the distance by 'estimating" the absolute magnitude from the position of a star on the main sequence of an HR diagram. The spectral class (hence the term spectroscopic) is used to estimate the absolute magnitude. Note that this method has nothing to do with parallax! You are still using the distance modulus as the method. Bright 10 Main Sequence Stars Dim 15 HOT Spectral Type a. Using the HR diagram, estimate the absolute magnitude for each star listed in the table below. Record your result in the table b. Then use the distance modulus to estimate the distance to each star and record your answer on the table Star ? nnarart Snortral tune Fctimatarl Ectimated Page 10 ot 15 4032 words E + 100% 7:39 PM Type here to search Earth Sciences que.W3 -lab 33 magnitude.. 82/2018Explanation / Answer
Apparent magnitude is defined as the brightness of a star as seen from the surface of the Earth.
Absolute magnitude is defined as the brightness as seen if the star was at 10 parsecs distance.
Absolute magnitude is measured from the graph,and the distance is measured from by using the formula
m-M=5(log d /10)
m= apparent magnitude
M= absolute magnitude
d=distance of the star from earth
Absolute magnitude distance
4.4 1) 4.3 light year
.6. 2) 25.05 ly
-6.69. 3) 773 ly
-1.46. 4) 139 ly
-5.2. 5) 520 ly
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