Midterm II Jeopardy
... $400 - Pluto is now called this. (Dwarf planet) $600 – This is the event that killed the remaining dinosaurs and 2/3 of all life (K-T Extinction) $800 - A novae can result when you have these two objects near each other (WD and other star, red giant) ...
... $400 - Pluto is now called this. (Dwarf planet) $600 – This is the event that killed the remaining dinosaurs and 2/3 of all life (K-T Extinction) $800 - A novae can result when you have these two objects near each other (WD and other star, red giant) ...
The Stars
... The Stars Stars vary greatly in size, brightness, temperature, and colour. Here are some of the things we have learned about the properties of stars. Measuring distance Just as with the kilometre, the AU is not very useful when we start to study stuff outside of our Solar System. A much larger unit ...
... The Stars Stars vary greatly in size, brightness, temperature, and colour. Here are some of the things we have learned about the properties of stars. Measuring distance Just as with the kilometre, the AU is not very useful when we start to study stuff outside of our Solar System. A much larger unit ...
Astronomy Problems – Color Index Nov. 2011
... Astronomers measure the brightness of stars at three colors of light: The "U" band at 360 nm The "B" band at 440 nm The "V" band at 540 nm The "color index" of a star is defined as the magnitude in the B filter, minus the magnitude in the V filter. Color Index = B-V, where B and V refer to the ...
... Astronomers measure the brightness of stars at three colors of light: The "U" band at 360 nm The "B" band at 440 nm The "V" band at 540 nm The "color index" of a star is defined as the magnitude in the B filter, minus the magnitude in the V filter. Color Index = B-V, where B and V refer to the ...
homework assignment 3
... Due Monday, April 22, 2013 at 5 p.m., either electronically or on paper. 1. Most astronomy textbooks use planets orbiting the Sun to illustrate the relevance of Kepler’s third law of planetary motion. In a class on stars and galaxies, describe a more relevant example of Kepler’s third law (i.e., whe ...
... Due Monday, April 22, 2013 at 5 p.m., either electronically or on paper. 1. Most astronomy textbooks use planets orbiting the Sun to illustrate the relevance of Kepler’s third law of planetary motion. In a class on stars and galaxies, describe a more relevant example of Kepler’s third law (i.e., whe ...
Physics 127 Descriptive Astronomy Homework #16
... 10-5. The star Zubenelgenubi (from Arabic for “scorpion’s southern claw”) has apparent magnitude 2.75 while the star Sulafat (Arabic for “tortoise”) has apparent magnitude 3.25. Which star appears brighter? From this information alone, what can you conclude about the luminosities of these stars? Exp ...
... 10-5. The star Zubenelgenubi (from Arabic for “scorpion’s southern claw”) has apparent magnitude 2.75 while the star Sulafat (Arabic for “tortoise”) has apparent magnitude 3.25. Which star appears brighter? From this information alone, what can you conclude about the luminosities of these stars? Exp ...
Introduction to Astronomy
... Nuclear reactions only take place in the innermost 30% of the sun’s radius. The central density is 150 times that of water; the central temperature is 15 million kelvin. ...
... Nuclear reactions only take place in the innermost 30% of the sun’s radius. The central density is 150 times that of water; the central temperature is 15 million kelvin. ...
Stars - TeacherWeb
... • The brightness the star would have if it were at a standard distance from Earth. • Astronomers must find out the star’s apparent magnitude and its distance from Earth then calculate its absolute magnitude. ...
... • The brightness the star would have if it were at a standard distance from Earth. • Astronomers must find out the star’s apparent magnitude and its distance from Earth then calculate its absolute magnitude. ...
Chapter 18 Study Guide
... 17. Below sketch out the H-R diagram plotting the main stars and labeling the main sequence. ...
... 17. Below sketch out the H-R diagram plotting the main stars and labeling the main sequence. ...
Properties of Main Sequence Stars
... Properties of Main Sequence Stars 10 points Extra Credit. Due next class. ...
... Properties of Main Sequence Stars 10 points Extra Credit. Due next class. ...
Homework, November 16, 2006 AST110-6
... 2. Chapter 12, Review Question 6 [20 pt]. Briefly explain the changes that the Sun will go through after it exhausts its core hydrogen. Be sure to explain both the changes occurring in the Sun’s core and the changes visible from outside the Sun. What do we mean by the stages we call hydrogen shell b ...
... 2. Chapter 12, Review Question 6 [20 pt]. Briefly explain the changes that the Sun will go through after it exhausts its core hydrogen. Be sure to explain both the changes occurring in the Sun’s core and the changes visible from outside the Sun. What do we mean by the stages we call hydrogen shell b ...
a star.
... • Hottest, most massive stars • Shortest lives: just millions of years • Use hydrogen quickly ...
... • Hottest, most massive stars • Shortest lives: just millions of years • Use hydrogen quickly ...
Chapter 30.1
... Measure light from star using telescopes Measurement is then assigned a number Brightest stars have lowest numbers Dimmest stars have highest numbers ...
... Measure light from star using telescopes Measurement is then assigned a number Brightest stars have lowest numbers Dimmest stars have highest numbers ...
Ursa Minor
Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.