E5 stellar processes and stellar evolution (HL only)
... its life (it “burns” out quicker) A star with a mass 10x greater than the sun will have a life time a factor 10-3 (1/1000) less than the sun ...
... its life (it “burns” out quicker) A star with a mass 10x greater than the sun will have a life time a factor 10-3 (1/1000) less than the sun ...
Measuring the Stars
... labeled with Greek letters (Alpha Centauri) In the early 18th century, stars were numbered from west to east in a constellation (61 Cygni) ...
... labeled with Greek letters (Alpha Centauri) In the early 18th century, stars were numbered from west to east in a constellation (61 Cygni) ...
Merak
... Information about Merak Merak’s name means flank of the Great Bear This star is located in the bottom right corner of the Big Dipper constellation It is a White Main Sequence star and it’s sixty-two light years away! ...
... Information about Merak Merak’s name means flank of the Great Bear This star is located in the bottom right corner of the Big Dipper constellation It is a White Main Sequence star and it’s sixty-two light years away! ...
Stars are classified according to their color
... • Stars are classified according to their color temperature: ...
... • Stars are classified according to their color temperature: ...
PowerPoint
... The inward pressure is enormous, due to the high mass of the star. There is nothing stopping the star from collapsing further; it does so very rapidly, in a giant implosion. As it continues to become more and more dense, the protons and electrons react with one another to become neutrons: ...
... The inward pressure is enormous, due to the high mass of the star. There is nothing stopping the star from collapsing further; it does so very rapidly, in a giant implosion. As it continues to become more and more dense, the protons and electrons react with one another to become neutrons: ...
Unit 1
... • Red Giant stars can fill their Roche lobes • In a binary star system, the Roche lobes of the two stars can touch, and mass can pass between them. ...
... • Red Giant stars can fill their Roche lobes • In a binary star system, the Roche lobes of the two stars can touch, and mass can pass between them. ...
lecture23
... All stars in a cluster are at about same distance from Earth. All stars in a cluster are of about the same age. Clusters therefore are natural laboratory in which mass, rather than age, of stars is only significant variable. ...
... All stars in a cluster are at about same distance from Earth. All stars in a cluster are of about the same age. Clusters therefore are natural laboratory in which mass, rather than age, of stars is only significant variable. ...
Stellar Evolution and the HR Diagram – Study Guide
... On the HR Diagram above, label the spectral groups along the x-axis. OBAFGKM ...
... On the HR Diagram above, label the spectral groups along the x-axis. OBAFGKM ...
Name: Astronomy Study Guide Part 1 Define Astronomy
... Day- 24 hours for Earth to rotate once about its axis Month- Length of time for the moon to revolve around earth Year- Length of time for Earth to revolve around sun 365.25 days Calendar- years, months, and days based on our celestial objects Leap Year- Feb 29 once every 4 years to make up for our 3 ...
... Day- 24 hours for Earth to rotate once about its axis Month- Length of time for the moon to revolve around earth Year- Length of time for Earth to revolve around sun 365.25 days Calendar- years, months, and days based on our celestial objects Leap Year- Feb 29 once every 4 years to make up for our 3 ...
RED “O Big Red
... (all-deB-er-on) was one of the brightest stars in earth’s sky. soon the Stella was bathed in red light. “this star is enormous!” manolo shouted. “it’s 44 times wider than the sun, but its temperature is much cooler. how does such a cool star shine so brightly?” Captain Gamma turned off the cabin lig ...
... (all-deB-er-on) was one of the brightest stars in earth’s sky. soon the Stella was bathed in red light. “this star is enormous!” manolo shouted. “it’s 44 times wider than the sun, but its temperature is much cooler. how does such a cool star shine so brightly?” Captain Gamma turned off the cabin lig ...
Chapter 15 part 1
... To compare intrinsic, or absolute, properties of stars, however, astronomers imagine looking at all stars from a standard distance of 10 pc (arbitrary choice). Because the distance is fixed in this definition, absolute magnitude is a measure of a star’s absolute brightness, or luminosity. ...
... To compare intrinsic, or absolute, properties of stars, however, astronomers imagine looking at all stars from a standard distance of 10 pc (arbitrary choice). Because the distance is fixed in this definition, absolute magnitude is a measure of a star’s absolute brightness, or luminosity. ...
class17
... How would the apparent brightness of Alpha Centauri change if it were three times farther away? ...
... How would the apparent brightness of Alpha Centauri change if it were three times farther away? ...
ď - Google Sites
... d. The hottest stars emit shorter wavelengths of light and appear bluer, while cooler stars appear more red. ...
... d. The hottest stars emit shorter wavelengths of light and appear bluer, while cooler stars appear more red. ...
Planisphere Exercise
... located just beneath the brass fastener that holds the star wheel to the frame of the planisphere. As the night progresses, which way do the stars appear to move around the North Star (which is hidden under the brass fastener) – clockwise or counterclockwise? As the night progresses, how do stars ap ...
... located just beneath the brass fastener that holds the star wheel to the frame of the planisphere. As the night progresses, which way do the stars appear to move around the North Star (which is hidden under the brass fastener) – clockwise or counterclockwise? As the night progresses, how do stars ap ...
Life Cycle of Stars
... • The objects that heat and light the planets in a system • A star is a ball of plasma held together by its own gravity – Nuclear reactions occur in stars (H He) – Energy from the nuclear reactions is released as electromagnetic radiation ...
... • The objects that heat and light the planets in a system • A star is a ball of plasma held together by its own gravity – Nuclear reactions occur in stars (H He) – Energy from the nuclear reactions is released as electromagnetic radiation ...
Stellar Evolution Notes
... It takes about 10 billion years for a star with the mass of the Sun to convert all of the hydrogen in its ...
... It takes about 10 billion years for a star with the mass of the Sun to convert all of the hydrogen in its ...
Stellar Evolution Notes
... It takes about 10 billion years for a star with the mass of the Sun to convert all of the hydrogen in its ...
... It takes about 10 billion years for a star with the mass of the Sun to convert all of the hydrogen in its ...
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.