Name _______________________________________________________ Date ____________ Per ______
Eclipsing Binary Stars & Spectra
_________________________ 1. Color of the longest wavelength of visible light.
_________________________ 2. Color of the highest frequency of visible light.
_________________________ 3. The speed of all electromagnetic waves.
_________________________ 4. The form of electromagnetic energy that comes between red light &
microwaves.
_________________________ 5. Electromagnetic energy wave with the longest wavelength.
_________________________ 6. Electromagnetic energy wave with the highest frequency.
_________________________ 7. Speed of all electromagnetic energy
_________________________ 8. Type of variable star where on star passes in front of another changing the
apparent magnitude
_________________________ 9. What kinds of spectra are shown in the figure below?
__________________________
__________________________ 10. Which of the elements shown occur
in the star’s outer layer?
__________________________ __________________________
__________________________ 11. What instrument was used to record
the spectra?
The diagram below shows an eclipsing binary formed by two main-sequence stars of approximately equal
size. The distance between the stars is insignificant compared to their distance from Earth. As measured by
an observer on Earth at what position (X, Y, or Z) does the eclipsing binary appear to have
a. the brightest absolute magnitude/ __________
b. the dimmest luminosity? __________
c. the brightest apparent magnitude? ____________
d. the hottest surface temperature? __________