Exam Name___________________________________
... 20) What is the source of energy that enables a main-sequence star to shine? A) Fusion of hydrogen in a shell surrounding the core. B) Burning of gases on its surface. C) Fusion of hydrogen in its core. D) Fusion of helium in its core. E) Friction between its atoms. ...
... 20) What is the source of energy that enables a main-sequence star to shine? A) Fusion of hydrogen in a shell surrounding the core. B) Burning of gases on its surface. C) Fusion of hydrogen in its core. D) Fusion of helium in its core. E) Friction between its atoms. ...
STARS - AN INTRODUCTION
... They give off light and heat. The Sun is a medium sized star. It is bigger than all eight planets combined! However, there are stars a lot bigger than the Sun! The largest stars are called ...
... They give off light and heat. The Sun is a medium sized star. It is bigger than all eight planets combined! However, there are stars a lot bigger than the Sun! The largest stars are called ...
Summary: Stellar Distances
... Interstellar dust makes stars look redder over long distances Temperatures can also be inferred from the appearance of a star’s spectrum - the pattern of spectral lines. This spectral typing is not affected by interstellar dust. Surface temperatures of stars almost all lie between 40,000°K for the “ ...
... Interstellar dust makes stars look redder over long distances Temperatures can also be inferred from the appearance of a star’s spectrum - the pattern of spectral lines. This spectral typing is not affected by interstellar dust. Surface temperatures of stars almost all lie between 40,000°K for the “ ...
Astro-Spectroscpy
... The HR diagram assigns stellar temperature (color) to spectral classes (bottom and top), related to luminosity (left) measured in absolute magnitudes (right) ...
... The HR diagram assigns stellar temperature (color) to spectral classes (bottom and top), related to luminosity (left) measured in absolute magnitudes (right) ...
Slide 1
... Most of the brightest stars in the sky are 1) relatively hot small stars. 2) relatively cool giant stars. 3) relatively cool small stars. 4) relatively hot giant stars. ...
... Most of the brightest stars in the sky are 1) relatively hot small stars. 2) relatively cool giant stars. 3) relatively cool small stars. 4) relatively hot giant stars. ...
june 2011 - Holt Planetarium
... and mantle, leaving behind its core and not much else. This spectacular view of the crater Degas was obtained as a highresolution targeted observation (90 m/pixel). Impact melt coats its floor, and as the melt cooled and shrank, it formed the cracks observed across the crater. For context, Mariner 1 ...
... and mantle, leaving behind its core and not much else. This spectacular view of the crater Degas was obtained as a highresolution targeted observation (90 m/pixel). Impact melt coats its floor, and as the melt cooled and shrank, it formed the cracks observed across the crater. For context, Mariner 1 ...
H-R diagram worksheet
... Mark each of the following on the H-R diagram and label it as indicated. You may use page 15 of your ESRT to help you. 6. Draw and label a long diagonal line showing the approximate location of the main sequence. 7. A large circle indicating the area where you find the biggest diameter stars, labele ...
... Mark each of the following on the H-R diagram and label it as indicated. You may use page 15 of your ESRT to help you. 6. Draw and label a long diagonal line showing the approximate location of the main sequence. 7. A large circle indicating the area where you find the biggest diameter stars, labele ...
june 2011 - Holt Planetarium
... and mantle, leaving behind its core and not much else. This spectacular view of the crater Degas was obtained as a highresolution targeted observation (90 m/pixel). Impact melt coats its floor, and as the melt cooled and shrank, it formed the cracks observed across the crater. For context, Mariner 1 ...
... and mantle, leaving behind its core and not much else. This spectacular view of the crater Degas was obtained as a highresolution targeted observation (90 m/pixel). Impact melt coats its floor, and as the melt cooled and shrank, it formed the cracks observed across the crater. For context, Mariner 1 ...
The Sun - Hicksville Public Schools
... weeks or months. During this short interval, a supernova can radiate as much energy as the Sun would emit over 10 billion years. The explosion expels much or all of a star's material at high velocity, driving a shock wave into the surrounding interstellar medium, where it sweeps up an expanding shel ...
... weeks or months. During this short interval, a supernova can radiate as much energy as the Sun would emit over 10 billion years. The explosion expels much or all of a star's material at high velocity, driving a shock wave into the surrounding interstellar medium, where it sweeps up an expanding shel ...
Stars
... Color of Stars • Look at the candle and Bunsen burner. Which is hotter? • The blue flame of the Bunsen burner is much hotter than the yellow flame of the candle. • Stars are different colors too, so we know they are different ...
... Color of Stars • Look at the candle and Bunsen burner. Which is hotter? • The blue flame of the Bunsen burner is much hotter than the yellow flame of the candle. • Stars are different colors too, so we know they are different ...
Stars
... • The distance which a ray of light would travel in one ‘Earth’ year • About 6,000,000,000,000 (6 trillion) miles • 186,000 miles per second ...
... • The distance which a ray of light would travel in one ‘Earth’ year • About 6,000,000,000,000 (6 trillion) miles • 186,000 miles per second ...
Study Guide for the 4TH Astronomy Exam
... Study Guide for the 4TH Astronomy Exam Stellar Evolution The successful student will be able to… 1. Star Formation a. Describe the physical characteristics of a giant molecular cloud b. Identify the source of heating (energy production) in protostars c. Explain why more low-mass K & M main sequence ...
... Study Guide for the 4TH Astronomy Exam Stellar Evolution The successful student will be able to… 1. Star Formation a. Describe the physical characteristics of a giant molecular cloud b. Identify the source of heating (energy production) in protostars c. Explain why more low-mass K & M main sequence ...
Relative sizes of astronomical objects
... In this comparison our Sun is down to 1 pixel, a mote of dust with an arrow pointing to it. Jupiter is invisible. Betelgeuse (Alpha Orionis) is a red supergiant. If Betelgeuse replaced our Sun, its surface would lie between the orbit of Mars and Jupiter. Antares (Alpha Scorpii) is a red supergiant 7 ...
... In this comparison our Sun is down to 1 pixel, a mote of dust with an arrow pointing to it. Jupiter is invisible. Betelgeuse (Alpha Orionis) is a red supergiant. If Betelgeuse replaced our Sun, its surface would lie between the orbit of Mars and Jupiter. Antares (Alpha Scorpii) is a red supergiant 7 ...
HELP
... 8 Venus is 42 million kilometres from the Earth. Mars is 78 million kilometres from the Earth. Venus is less than twice the size of Mars but is very much more than twice the brightness. It is often the brightest object in the night sky, even when the Moon is shining. Venus is covered with white clou ...
... 8 Venus is 42 million kilometres from the Earth. Mars is 78 million kilometres from the Earth. Venus is less than twice the size of Mars but is very much more than twice the brightness. It is often the brightest object in the night sky, even when the Moon is shining. Venus is covered with white clou ...
A Star is Born worksheet and key
... 10. How is a planetary nebula formed? When the outer layers of the red giant drift into space. 11. For how long do white dwarfs radiate their leftover heat? Billions of years. 12. How long is the life phase of a red supergiant? Millions of years. 13. What’s two differences between red giants and red ...
... 10. How is a planetary nebula formed? When the outer layers of the red giant drift into space. 11. For how long do white dwarfs radiate their leftover heat? Billions of years. 12. How long is the life phase of a red supergiant? Millions of years. 13. What’s two differences between red giants and red ...
Document
... • You want to detect the faint star of an unresolved binary system comprising a B5V star and an M0V companion. What wavelength regime would you choose to try to detect the M0V star? What is the ratio of the flux from the B star to the flux from the M star at that wavelength? • You want to detect the ...
... • You want to detect the faint star of an unresolved binary system comprising a B5V star and an M0V companion. What wavelength regime would you choose to try to detect the M0V star? What is the ratio of the flux from the B star to the flux from the M star at that wavelength? • You want to detect the ...
Topic 3: Astronomy
... - constellation: a group of stars that appears to form a pattern that looks like a familiar object or character - asterism: a distinct star group that is part of a constellation (EX/ the Big Dipper is an asterism that is part of a larger constellation called Ursa Major) - as Earth rotates, constella ...
... - constellation: a group of stars that appears to form a pattern that looks like a familiar object or character - asterism: a distinct star group that is part of a constellation (EX/ the Big Dipper is an asterism that is part of a larger constellation called Ursa Major) - as Earth rotates, constella ...
Life Cycle of Stars
... the atoms are packed together even tighter than before. The outer shell has expanded in an effort to help heat from the core escape into space. The red giant is the first step in old age. ...
... the atoms are packed together even tighter than before. The outer shell has expanded in an effort to help heat from the core escape into space. The red giant is the first step in old age. ...
Stellar evolution, II
... mass of Sun = 2 X 1030 kg 0.007 of mass of hydrogen is converted into energy 0.1 of mass of Sun (the core) is converted in He Total energy liberated by Sun during main sequence phase is (2 X 1030) X 0.007 X 0.1 X c2 = 1.26 X 1044 J. Luminosity of Sun = 3.8 X 1026 Joules/sec ...
... mass of Sun = 2 X 1030 kg 0.007 of mass of hydrogen is converted into energy 0.1 of mass of Sun (the core) is converted in He Total energy liberated by Sun during main sequence phase is (2 X 1030) X 0.007 X 0.1 X c2 = 1.26 X 1044 J. Luminosity of Sun = 3.8 X 1026 Joules/sec ...
Careful measurements reveal that the earth has a slight difference in
... star in the northern direction. Sigma Octantis is the closest star to the south celestial pole, but it is too faint to serve as a useful pole star. The Southern Cross constellation functions as an approximate southern pole constellation. Some people travel to the equator in order to be able to see b ...
... star in the northern direction. Sigma Octantis is the closest star to the south celestial pole, but it is too faint to serve as a useful pole star. The Southern Cross constellation functions as an approximate southern pole constellation. Some people travel to the equator in order to be able to see b ...
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.