UCSD Students` Presentation on Star Formation
... normal size. The central density rises to 105 kg/m3, the central temp rises to 15 million K and the surface temp rises to 6000 K. ...
... normal size. The central density rises to 105 kg/m3, the central temp rises to 15 million K and the surface temp rises to 6000 K. ...
Linking Asteroids and Meteorites through Reflectance Spectroscopy
... called Supergiants • Stars between the Supergiants and main sequence are called Giants • Stars below the Main Sequence are called White Dwarfs ...
... called Supergiants • Stars between the Supergiants and main sequence are called Giants • Stars below the Main Sequence are called White Dwarfs ...
File
... Answer the following questions in your notebook. Write the complete question and write your answer in complete sentences. 4. Explain how astronomers measure the distance to nearby stars. 5. What are the main characteristics used to classify stars? 6. How would you classify the sun based on each of t ...
... Answer the following questions in your notebook. Write the complete question and write your answer in complete sentences. 4. Explain how astronomers measure the distance to nearby stars. 5. What are the main characteristics used to classify stars? 6. How would you classify the sun based on each of t ...
Main Sequence stars
... body curve, and spectral class all of which are indicators of a star’s temperature ...
... body curve, and spectral class all of which are indicators of a star’s temperature ...
Lab 5 Takehome
... Figure 2 shows the same stars, but here what’s plotted is the apparent brightness of the star as seen from the Earth, instead of the luminosity. The vertical axis is scaled so that 1.0 represe ...
... Figure 2 shows the same stars, but here what’s plotted is the apparent brightness of the star as seen from the Earth, instead of the luminosity. The vertical axis is scaled so that 1.0 represe ...
Are we Alone? The Search for Life Beyond the
... HD 209458 b • 150 light years from Earth. • Planet orbits every 3.5 days. • 4 million miles from its star. • Atmospheric temperature ~2000K. ...
... HD 209458 b • 150 light years from Earth. • Planet orbits every 3.5 days. • 4 million miles from its star. • Atmospheric temperature ~2000K. ...
How Bright is that star?
... Relates luminosity, temperature and Radius of a star. The luminosity/meter² (l), is determined by the temperature (T) of that area ) l = σT⁴ (σ is a constant which if T is in °K, l comes out in Watts) Surface area is determined by radius(R): A = 4πR² So the total Lumnosity of star becomes L = 4πR²σT ...
... Relates luminosity, temperature and Radius of a star. The luminosity/meter² (l), is determined by the temperature (T) of that area ) l = σT⁴ (σ is a constant which if T is in °K, l comes out in Watts) Surface area is determined by radius(R): A = 4πR² So the total Lumnosity of star becomes L = 4πR²σT ...
Meteors - Little Worksheets
... The correct name for a shooting star is meteor. Besides very large objects like stars, planets and moons, space has lots of little objects. These can be rocks in space left over from old planets. These objects can even be as small as a speck of dust. These objects are called meteorites. When a meteo ...
... The correct name for a shooting star is meteor. Besides very large objects like stars, planets and moons, space has lots of little objects. These can be rocks in space left over from old planets. These objects can even be as small as a speck of dust. These objects are called meteorites. When a meteo ...
ASTR 1101-001 Spring 2008 - Louisiana State University
... through telescopes but were not bright enough to be seen by Greek astronomers). • The Sun can also be put on this “magnitude” system. ...
... through telescopes but were not bright enough to be seen by Greek astronomers). • The Sun can also be put on this “magnitude” system. ...
SES4U Life Cycle of a Star
... the protostar becomes a brown dwarf and never reaches star status If critical temperature is reached, nuclear fusion begins (H fuses into He for the first time) ...
... the protostar becomes a brown dwarf and never reaches star status If critical temperature is reached, nuclear fusion begins (H fuses into He for the first time) ...
Name - MIT
... are white dwarfs that have finally ceased all nuclear reactions. are white dwarfs that have cooled and no longer produce visible light. are the end products of stars like the sun. are a name given to matter so compressed that even light can't escape. ...
... are white dwarfs that have finally ceased all nuclear reactions. are white dwarfs that have cooled and no longer produce visible light. are the end products of stars like the sun. are a name given to matter so compressed that even light can't escape. ...
Chapter 15 Stars, Galaxies
... is clearer and is not brightened by city lights. 14. Some telescopes in space can detect ultraviolet radiation, X-rays, and gamma rays that are blocked by Earth’s atmosphere. Others can detect visible light or infrared radiation that is partially interfered with by Earth’s atmosphere. 15. It makes s ...
... is clearer and is not brightened by city lights. 14. Some telescopes in space can detect ultraviolet radiation, X-rays, and gamma rays that are blocked by Earth’s atmosphere. Others can detect visible light or infrared radiation that is partially interfered with by Earth’s atmosphere. 15. It makes s ...
Measuring Distance with Spectroscopic Parallax
... 1. Print out the HR diagram. 2. Using a pen or pencil, draw a smooth best-fit curve that runs through the middle of all of your main sequence stars. Just ignore the red giants and white dwarfs for this activity. Note that this will not be a straight line; it will curve slightly. And, it will not go ...
... 1. Print out the HR diagram. 2. Using a pen or pencil, draw a smooth best-fit curve that runs through the middle of all of your main sequence stars. Just ignore the red giants and white dwarfs for this activity. Note that this will not be a straight line; it will curve slightly. And, it will not go ...
sample exam 1
... 1. Draw the heliocentric model of the solar system, including only the Sun and Earth, from a viewpoint at the celestial north pole. Use the standard astronomical symbols for those bodies. Indicate with an arrow the direction in which the Earth orbits. 2. On the same drawing above, indicate with an a ...
... 1. Draw the heliocentric model of the solar system, including only the Sun and Earth, from a viewpoint at the celestial north pole. Use the standard astronomical symbols for those bodies. Indicate with an arrow the direction in which the Earth orbits. 2. On the same drawing above, indicate with an a ...
Stars and Light
... cooler brown dwarf stars. These stars have such low masses, < 0.08 M⊙, that no fusion occurs inside. Spectral class M include the most massive brown dwarfs. • Need extra spectral types: L, T, Y • L is hottest, Y is coolest (down to ~300K) • Note Y brown dwarfs were discovered only this year and are ...
... cooler brown dwarf stars. These stars have such low masses, < 0.08 M⊙, that no fusion occurs inside. Spectral class M include the most massive brown dwarfs. • Need extra spectral types: L, T, Y • L is hottest, Y is coolest (down to ~300K) • Note Y brown dwarfs were discovered only this year and are ...
A stars
... The size and location of the HZ depends on the nature of the star The situation becomes even more extreme in the case of a red dwarf, such as Barnard's Star (M4: about 2,000 times less luminous than the Sun), the HZ of which would extend only between about 750,000 and 2 million km (0.02 to 0.06 AU) ...
... The size and location of the HZ depends on the nature of the star The situation becomes even more extreme in the case of a red dwarf, such as Barnard's Star (M4: about 2,000 times less luminous than the Sun), the HZ of which would extend only between about 750,000 and 2 million km (0.02 to 0.06 AU) ...
Main Sequence Stars
... given mass and chemical composition – if we start with a just formed protostar of a given mass and chemical composition, we can calculate how that star will evolve over its entire life. • This is extremely useful because it greatly simplifies the study of stars and is the basic reason why the HR dia ...
... given mass and chemical composition – if we start with a just formed protostar of a given mass and chemical composition, we can calculate how that star will evolve over its entire life. • This is extremely useful because it greatly simplifies the study of stars and is the basic reason why the HR dia ...
Astronomy 110 Announcements: 11.1 Properties of Stars
... It would be only 1/3 as bright It would be only 1/6 as bright It would be only 1/9 as bright It would be three times brighter ...
... It would be only 1/3 as bright It would be only 1/6 as bright It would be only 1/9 as bright It would be three times brighter ...
Space The Life of a Star
... and it is colored white. Once it cools down further, the star becomes a black dwarf. Now, the star is finished with its life cycle. High-mass stars explode after their red giant stage. If the star is massive enough, it will eventually become a black hole. Other high-mass red giants may become neutro ...
... and it is colored white. Once it cools down further, the star becomes a black dwarf. Now, the star is finished with its life cycle. High-mass stars explode after their red giant stage. If the star is massive enough, it will eventually become a black hole. Other high-mass red giants may become neutro ...
ASTRONOMY 12 Problem Set 4 – Due March 10, 2016 1) After
... 1) After helium burning in a low mass star like the sun, a degenerate core composed of carbon and oxygen is formed that has a temperature of roughly 4 × 108 K, i.e., a white dwarf star. The ions (i.e., the nuclei) are not degenerate, even though the electrons are. The total thermal energy in the cor ...
... 1) After helium burning in a low mass star like the sun, a degenerate core composed of carbon and oxygen is formed that has a temperature of roughly 4 × 108 K, i.e., a white dwarf star. The ions (i.e., the nuclei) are not degenerate, even though the electrons are. The total thermal energy in the cor ...
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.