Astronomy Tour
... dust that is a “tail” Scientists believe that these originate from a large region filled with comet cores called the Oort cloud. ...
... dust that is a “tail” Scientists believe that these originate from a large region filled with comet cores called the Oort cloud. ...
Stellar Evolution
... At this point the star explodes in what is called a type II supernova. During these explosions, free neutrons may be captured by atoms to produce elements heavier than iron. The debris from a supernova can create a nebula. ...
... At this point the star explodes in what is called a type II supernova. During these explosions, free neutrons may be captured by atoms to produce elements heavier than iron. The debris from a supernova can create a nebula. ...
投影片 1
... It represents the end state of stellar evolution of stars like the Sun Its progenitor had an original mass about seven times the Sun’s From the death of GD362,it passed two to five billion years based on the cooling rate ...
... It represents the end state of stellar evolution of stars like the Sun Its progenitor had an original mass about seven times the Sun’s From the death of GD362,it passed two to five billion years based on the cooling rate ...
Twinkle, Twinkle, Little Star
... The brightness of a star depends on both the size and temperature of the star. But, how bright it APPEARS to us depends on how far it is from Earth and how bright it truly is. ...
... The brightness of a star depends on both the size and temperature of the star. But, how bright it APPEARS to us depends on how far it is from Earth and how bright it truly is. ...
File
... Main sequence stars are stars that are fusing hydrogen atoms to form helium atoms in their cores. Most of the stars in the universe are main sequence stars Red Giants are very large stars of high luminosity and low surface temperature. Red giants are thought to be in a late stage of evolution when ...
... Main sequence stars are stars that are fusing hydrogen atoms to form helium atoms in their cores. Most of the stars in the universe are main sequence stars Red Giants are very large stars of high luminosity and low surface temperature. Red giants are thought to be in a late stage of evolution when ...
The Lifecycle of Stars
... - Sculpted by stellar winds and radiation, these fantastic, undulating shapes lie within the stellar nursery known as M17, - Omega Nebula, some 5,500 light-years away in the nebula-rich constellation Sagittarius. - Colors in the fog of surrounding hotter material indicate M17's chemical make up. The ...
... - Sculpted by stellar winds and radiation, these fantastic, undulating shapes lie within the stellar nursery known as M17, - Omega Nebula, some 5,500 light-years away in the nebula-rich constellation Sagittarius. - Colors in the fog of surrounding hotter material indicate M17's chemical make up. The ...
Document
... • Dust grains = wavelength of blue light • Dust clouds: – Opaque to blue light, UV, X-rays – Transparent to red light, IR, radio ...
... • Dust grains = wavelength of blue light • Dust clouds: – Opaque to blue light, UV, X-rays – Transparent to red light, IR, radio ...
1. The distances to the most remote galaxies can be
... 18. H-R diagrams of very young clusters of stars: a) have all their stars on the main sequence. b) Have only their high mass stars on the main sequence while the low-mass protostars are still contracting (and hence are not on the main sequence yet). c) Have only their low mass stars on the main sequ ...
... 18. H-R diagrams of very young clusters of stars: a) have all their stars on the main sequence. b) Have only their high mass stars on the main sequence while the low-mass protostars are still contracting (and hence are not on the main sequence yet). c) Have only their low mass stars on the main sequ ...
Chapter 10: The Interstellar Medium - Otto
... Blue light is strongly scattered and absorbed by interstellar clouds. Red light can more easily penetrate the ...
... Blue light is strongly scattered and absorbed by interstellar clouds. Red light can more easily penetrate the ...
Slide 1
... discovered. • Originally thought to be holes, around 1910 several respected scientists started thinking they were in fact opaque clouds. ...
... discovered. • Originally thought to be holes, around 1910 several respected scientists started thinking they were in fact opaque clouds. ...
The Sun and Other Stars - Tuslaw Local School District
... than large mass stars, so they have much longer lives • Medium mass stars like the sun live about 10 by • Small mass stars may live 200 by • A large mass star 15 x’s as massive as the sun may ...
... than large mass stars, so they have much longer lives • Medium mass stars like the sun live about 10 by • Small mass stars may live 200 by • A large mass star 15 x’s as massive as the sun may ...
Discussion Activity #11a
... Please choose the best answer. When you are finished, tear this top sheet off and hand it in. The packet of MC questions below is yours to keep. 1. Which of the following statements about various stages of core nuclear burning (hydrogen, helium, carbon, and so on) in a high-mass star is NOT true? A. ...
... Please choose the best answer. When you are finished, tear this top sheet off and hand it in. The packet of MC questions below is yours to keep. 1. Which of the following statements about various stages of core nuclear burning (hydrogen, helium, carbon, and so on) in a high-mass star is NOT true? A. ...
Star Life Cycle Web Quest
... 10: Our solar system formed from a ____________________________________________________generation nebula. 11. What two pieces of information classify stars? ...
... 10: Our solar system formed from a ____________________________________________________generation nebula. 11. What two pieces of information classify stars? ...
Document
... What is the color of the stars with the highest surface temperature? ___________ What is the color of the stars with the lowest surface temperature? ____________ ...
... What is the color of the stars with the highest surface temperature? ___________ What is the color of the stars with the lowest surface temperature? ____________ ...
Lecture 31 - 2 The Death of Stars: Stellar Recycling Phase 3 -
... to these radii are completely vaporized while planets further out are vaporized except for rocky cores. • despite higher luminosity, the much larger surface area actually results in a decreased surface temperature for the giant star (i.e. it becomes redder than it was when it was on the main sequenc ...
... to these radii are completely vaporized while planets further out are vaporized except for rocky cores. • despite higher luminosity, the much larger surface area actually results in a decreased surface temperature for the giant star (i.e. it becomes redder than it was when it was on the main sequenc ...
Stars
... other elements in stars. A spectrograph is a device that breaks light into colors and produces an image of the resulting spectrum. ...
... other elements in stars. A spectrograph is a device that breaks light into colors and produces an image of the resulting spectrum. ...
Everything Under and Over The Stars
... If the sun went nova, what would happen to the solar system? There was a recent supernova called SN1993J in a star system, which is not mentioned. The powerful shockwave traveled at 44 million mph, but 5 years later it slowed down because of drag caused by particles. There has been a supernova in t ...
... If the sun went nova, what would happen to the solar system? There was a recent supernova called SN1993J in a star system, which is not mentioned. The powerful shockwave traveled at 44 million mph, but 5 years later it slowed down because of drag caused by particles. There has been a supernova in t ...
Stars-Chapter 18
... 1. Begin their lives as clouds of dust and gas called nebulae 2. Gravity may cause the nebula to contract 3. Matter in the gas cloud will begin to condense into a dense region called a protostar 4. The protostar continues to condense, it heats up. Eventually, it reaches a critical mass and nuclear f ...
... 1. Begin their lives as clouds of dust and gas called nebulae 2. Gravity may cause the nebula to contract 3. Matter in the gas cloud will begin to condense into a dense region called a protostar 4. The protostar continues to condense, it heats up. Eventually, it reaches a critical mass and nuclear f ...
White Dwarf Stars - University of California Observatories
... tendency for neutrons to be incompressible (neutron degeneracy pressure). • Their gravity is too strong to be supported by electron degeneracy pressure. • The more massive a neutron star, the smaller it is. A 1.44 M☼ neutron star is only about 10 km in radius. ...
... tendency for neutrons to be incompressible (neutron degeneracy pressure). • Their gravity is too strong to be supported by electron degeneracy pressure. • The more massive a neutron star, the smaller it is. A 1.44 M☼ neutron star is only about 10 km in radius. ...
Star formation
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as ""stellar nurseries"" or ""star-forming regions"", collapse to form stars. As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star formation process, and the study of protostars and young stellar objects as its immediate products. It is closely related to planet formation, another branch of astronomy. Star formation theory, as well as accounting for the formation of a single star, must also account for the statistics of binary stars and the initial mass function.In June 2015, astronomers reported evidence for Population III stars in the Cosmos Redshift 7 galaxy at z = 6.60. Such stars are likely to have existed in the very early universe (i.e., at high redshift), and may have started the production of chemical elements heavier than hydrogen that are needed for the later formation of planets and life as we know it.