Slide 1
... The Lives of Stars Gestation, Birth, and Youth: 1. The womb: Stars are born in dense molecular clouds. --The interstellar medium must be dense enough so H atoms can collide and form H2 molecules. This also is facilitated on dust--for other molecules as well. It increases gravitation enough for stars ...
... The Lives of Stars Gestation, Birth, and Youth: 1. The womb: Stars are born in dense molecular clouds. --The interstellar medium must be dense enough so H atoms can collide and form H2 molecules. This also is facilitated on dust--for other molecules as well. It increases gravitation enough for stars ...
Phys133-Sample MT2
... A) They were produced in the Big Bang. B) They were produced inside stars. C) They evolved from hydrogen and helium shortly after the Big Bang. D) They were produced inside dense interstellar gas. E) all of the above ...
... A) They were produced in the Big Bang. B) They were produced inside stars. C) They evolved from hydrogen and helium shortly after the Big Bang. D) They were produced inside dense interstellar gas. E) all of the above ...
01 - Ionia Public Schools
... 32. Describe how a black hole forms. _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ 33. Why ...
... 32. Describe how a black hole forms. _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ 33. Why ...
Brichler-powerpoint
... • Parallax – an apparent shift in the position of an object when viewed from different locations. • Using parallax and trigonometry, astronomers can find distances to stars. • Closer stars seem to move more than distant stars as the earth revolves around the sun. ...
... • Parallax – an apparent shift in the position of an object when viewed from different locations. • Using parallax and trigonometry, astronomers can find distances to stars. • Closer stars seem to move more than distant stars as the earth revolves around the sun. ...
Another Old Final
... (b) Estimate the distance to this supernova and the lookback time (how long ago we are observing it). (c) Type-Ia supernovae reach peak luminosities of 109 L . Estimate the peak apparent brightness of this supernova. Would it have been visible to the naked eye on a clear night? ...
... (b) Estimate the distance to this supernova and the lookback time (how long ago we are observing it). (c) Type-Ia supernovae reach peak luminosities of 109 L . Estimate the peak apparent brightness of this supernova. Would it have been visible to the naked eye on a clear night? ...
The Life Cycle of a Star
... surviving core is greater than 3 solar masses, then a black hole forms. A black hole is a core so dense and massive that it will generate so much gravity that not even light can escape it. ...
... surviving core is greater than 3 solar masses, then a black hole forms. A black hole is a core so dense and massive that it will generate so much gravity that not even light can escape it. ...
Time From the Perspective of a Particle Physicist
... • massive stars have fusion to heavier nuclei (Neon, Silicon, Sulpher, etc) • end up with core of Iron nuclei plus 26 unbound “free” electrons for every Fe • electrons are “degenerate” as so close together provide most of the pressure resisting gravity • enormous stress. electrons “give way” leave ...
... • massive stars have fusion to heavier nuclei (Neon, Silicon, Sulpher, etc) • end up with core of Iron nuclei plus 26 unbound “free” electrons for every Fe • electrons are “degenerate” as so close together provide most of the pressure resisting gravity • enormous stress. electrons “give way” leave ...
Astronomy 242: Review Questions #1 Distributed: February 10
... (a) Using the information in this diagram, estimate the range of surface gravities g for stars along the Main Sequence. Which end of the main sequence has the highest surface gravities? (b) Typical white dwarf stars have masses Mwd ≃ 1M⊙ . How do the surface gravities of white dwarf stars compare to ...
... (a) Using the information in this diagram, estimate the range of surface gravities g for stars along the Main Sequence. Which end of the main sequence has the highest surface gravities? (b) Typical white dwarf stars have masses Mwd ≃ 1M⊙ . How do the surface gravities of white dwarf stars compare to ...
Solutions
... You may use Introductory Astronomy and Astrophysics (Zeilik & Gregory), Astronomy: The Evoloving Universe ( Zeilik), and class notes and handouts, or other books. You may not share these resources with another student during the test. Indicate any figures or tables you use in your calculations. Show ...
... You may use Introductory Astronomy and Astrophysics (Zeilik & Gregory), Astronomy: The Evoloving Universe ( Zeilik), and class notes and handouts, or other books. You may not share these resources with another student during the test. Indicate any figures or tables you use in your calculations. Show ...
Stars and constellations
... The stars What is a star? The first thing to remember is that the Sun is a star and quite an ordinary one at that. The only reason that it looks so bright is that is so close to us – the next nearest star is more than 250 000 times further away. We now know that the Sun is just an average sort of st ...
... The stars What is a star? The first thing to remember is that the Sun is a star and quite an ordinary one at that. The only reason that it looks so bright is that is so close to us – the next nearest star is more than 250 000 times further away. We now know that the Sun is just an average sort of st ...
Stardeath
... 1. You are comparing a white dwarf, neutron star, and brown dwarf. What is the order of their sizes, from SMALLEST to LARGEST? A. Brown dwarf, neutron star, white dwarf. B. Neutron star, brown dwarf, white dwarf. C. Neutron star, white dwarf, brown dwarf. D. White dwarf, brown dwarf, neutron star. 2 ...
... 1. You are comparing a white dwarf, neutron star, and brown dwarf. What is the order of their sizes, from SMALLEST to LARGEST? A. Brown dwarf, neutron star, white dwarf. B. Neutron star, brown dwarf, white dwarf. C. Neutron star, white dwarf, brown dwarf. D. White dwarf, brown dwarf, neutron star. 2 ...
How to Find the North Star ppt
... astronomers divide the sky into eighty-eight constellations with defined boundaries Erroneously ...
... astronomers divide the sky into eighty-eight constellations with defined boundaries Erroneously ...
w 2012-01-13 Stellar Life Cycle
... Planetary nebulae are shells of gas thrown out by some stars near the end of their lives. Our Sun will probably produce a planetary nebula in about 5 billion years. They have nothing at all to do with planets; the terminology was invented because they often look a little like planets in small telesc ...
... Planetary nebulae are shells of gas thrown out by some stars near the end of their lives. Our Sun will probably produce a planetary nebula in about 5 billion years. They have nothing at all to do with planets; the terminology was invented because they often look a little like planets in small telesc ...
Lifecycle of the stars.
... The white dwarf is basically the left over core of the star. a white star may only get to the size of earth, but its mass equals to ½ of the ...
... The white dwarf is basically the left over core of the star. a white star may only get to the size of earth, but its mass equals to ½ of the ...
20081 Study Guide_77-120
... Answers to Analysis and Conclusions 1. The plate does not actually change position, although it does appear to move when it is viewed from different locations. 2. The apparent change in position of the plate is greater at short distances than it is farther away because the angle formed by the observ ...
... Answers to Analysis and Conclusions 1. The plate does not actually change position, although it does appear to move when it is viewed from different locations. 2. The apparent change in position of the plate is greater at short distances than it is farther away because the angle formed by the observ ...
GO1_Distrubtion Of Matter In Space
... star in which gravity is so strong that not even light from the radiation going on inside the remnant can escape • Scientists only know about them because of hoe material near them become very hot and bright ...
... star in which gravity is so strong that not even light from the radiation going on inside the remnant can escape • Scientists only know about them because of hoe material near them become very hot and bright ...
SN 1054
SN 1054 is a supernova that was first observed on 4 July 1054 A.D. (hence its name), and that lasted for a period of around two years. The event was recorded in contemporary Chinese astronomy, and references to it are also found in a later (13th-century) Japanese document, and in a document from the Arab world. Furthermore, there are a number of proposed, but doubtful, references from European sources recorded in the 15th century, and perhaps a pictograph associated with the Ancestral Puebloan culture found near the Peñasco Blanco site in New Mexico.The remnant of SN 1054, which consists of debris ejected during the explosion, is known as the Crab Nebula. It is located in the sky near the star Zeta Tauri (ζ Tauri). The core of the exploding star formed a pulsar, called the Crab Pulsar (or PSR B0531+21). The nebula and the pulsar it contains are the most studied astronomical objects outside the Solar System. It is one of the few Galactic supernovae where the date of the explosion is well known. The two objects are the most luminous in their respective categories. For these reasons, and because of the important role it has repeatedly played in the modern era, SN 1054 is the best known supernova in the history of astronomy.The Crab Nebula is easily observed by amateur astronomers thanks to its brightness, and was also catalogued early on by professional astronomers, long before its true nature was understood and identified. When the French astronomer Charles Messier watched for the return of Halley's Comet in 1758, he confused the nebula for the comet, as he was unaware of the former's existence. Due to this error, he created his catalogue of non-cometary nebulous objects, the Messier Catalogue, to avoid such mistakes in the future. The nebula is catalogued as the first Messier object, or M1.