The Life Cycle of the Stars
... atoms to begin fusing into helium, thereby releasing energy and raising the temperature at the core to over 15 million degrees. Another star was born, and the Sun began to glow. The birth of all stars is much like that of the Sun, but the mass of the gas and dust comprising the star will determine i ...
... atoms to begin fusing into helium, thereby releasing energy and raising the temperature at the core to over 15 million degrees. Another star was born, and the Sun began to glow. The birth of all stars is much like that of the Sun, but the mass of the gas and dust comprising the star will determine i ...
Stellar Evolution – Test Review Answers
... The dark lines in the absorption spectrum of a particular gas occur at exactly the same wavelengths as the bright lines in the emission spectrum of that same gas. 7. Why do astronomers see an absorption spectrum when they take spectra of stars? The light that moves outward through the sun is a conti ...
... The dark lines in the absorption spectrum of a particular gas occur at exactly the same wavelengths as the bright lines in the emission spectrum of that same gas. 7. Why do astronomers see an absorption spectrum when they take spectra of stars? The light that moves outward through the sun is a conti ...
Life Cycle of a Star
... May appear in supernova remnants, as isolated objects or in binary systems ...
... May appear in supernova remnants, as isolated objects or in binary systems ...
The Galactic Super Star Cluster Westerlund 1
... times the mass of Orion. Therefore, we would have expected diffuse emission with L x = 3x10 35 erg s-1, which is five times more flux than we observe. We suggest that the IMF is nonstandard, as is often claimed for young, massive star clusters. ...
... times the mass of Orion. Therefore, we would have expected diffuse emission with L x = 3x10 35 erg s-1, which is five times more flux than we observe. We suggest that the IMF is nonstandard, as is often claimed for young, massive star clusters. ...
Astronomy Study Guide #2
... 01. A star has an apparent magnitude of m_v= -1 while another has m_v=+16. How does their brightness compare to an observer on Earth? 02. What kind of star is the sun? 03. What does the color of visible stars tell us? 04. What is the H-R diagram? ...
... 01. A star has an apparent magnitude of m_v= -1 while another has m_v=+16. How does their brightness compare to an observer on Earth? 02. What kind of star is the sun? 03. What does the color of visible stars tell us? 04. What is the H-R diagram? ...
Unit 1
... core becomes too slow – Radiation carries away energy in regions where the photons are not readily absorbed by stellar gas – Close to the cores of massive stars, there is enough material to impede the flow of energy through radiation ...
... core becomes too slow – Radiation carries away energy in regions where the photons are not readily absorbed by stellar gas – Close to the cores of massive stars, there is enough material to impede the flow of energy through radiation ...
Stars-Chapter 18
... If the remaining mass of the star is more than about three times that of the Sun, it will collapse so completely that it will literally disappear from the universe. What is left behind is an intense region of gravity called a black hole ...
... If the remaining mass of the star is more than about three times that of the Sun, it will collapse so completely that it will literally disappear from the universe. What is left behind is an intense region of gravity called a black hole ...
Astronomy 110G Review Sheet for Exam #3 The
... • Irregular galaxies (Sm, Irr) such as the Magellanic clouds contain dust, gas, and young stars in a fairly disorganized fashion. They are flattened rotating systems but with large random disorganized motions. • Lenticular galaxies (S0, SB0) seem intermediate between spirals and ellipticals. They ha ...
... • Irregular galaxies (Sm, Irr) such as the Magellanic clouds contain dust, gas, and young stars in a fairly disorganized fashion. They are flattened rotating systems but with large random disorganized motions. • Lenticular galaxies (S0, SB0) seem intermediate between spirals and ellipticals. They ha ...
Document
... 2. An object that is so massive that light cannot escape its gravity is called a ___________ ___________. 3. A large, reddish star that is late in its life cycle is called a _______ ________. 4. A small, hot, dim star that is the leftover center of an old star is called a ___________ ____________. 5 ...
... 2. An object that is so massive that light cannot escape its gravity is called a ___________ ___________. 3. A large, reddish star that is late in its life cycle is called a _______ ________. 4. A small, hot, dim star that is the leftover center of an old star is called a ___________ ____________. 5 ...
Pre-Main Sequence Evolution
... The Milky Way has several thousand of these objects, each with masses of 104 M8< M < 107 M8, and sizes between 10 and 100 pc. Although the average density of these clouds is ~ 100 cm-3, these objects are very clumpy, with large numbers of colder, dense cores. Orion is the one of the nearest (but not ...
... The Milky Way has several thousand of these objects, each with masses of 104 M8< M < 107 M8, and sizes between 10 and 100 pc. Although the average density of these clouds is ~ 100 cm-3, these objects are very clumpy, with large numbers of colder, dense cores. Orion is the one of the nearest (but not ...
Space ppt
... of billions of stars bound together by gravity. • Spiral Galaxy: A galaxy whose arms curve outward in a pinwheel pattern. Contains solar systems and nebulae (gas, new stars, and dust). • Irregular Galaxy: A galaxy that does not have a regular shape. They do not fit in another class. • Elliptical Gal ...
... of billions of stars bound together by gravity. • Spiral Galaxy: A galaxy whose arms curve outward in a pinwheel pattern. Contains solar systems and nebulae (gas, new stars, and dust). • Irregular Galaxy: A galaxy that does not have a regular shape. They do not fit in another class. • Elliptical Gal ...
Astronomy Practice Test
... 15. Which of the following statements best describes how the planets of the solar system formed? A. They are condensed rings of matter thrown off by the young Sun. B. They are the remains of an exploded star once paired with the Sun. C. The Sun captured them from smaller, older nearby stars. D. They ...
... 15. Which of the following statements best describes how the planets of the solar system formed? A. They are condensed rings of matter thrown off by the young Sun. B. They are the remains of an exploded star once paired with the Sun. C. The Sun captured them from smaller, older nearby stars. D. They ...
Stellar Death Final Phases
... using a spectroscope proved that Herschel was right emission lines in the spectrum showed that the nebula was a gas. ...
... using a spectroscope proved that Herschel was right emission lines in the spectrum showed that the nebula was a gas. ...
PX269 Galaxies The University of Warwick
... ii) To which of the main classes of elliptical galaxies does each galaxy belong (i.e. ...
... ii) To which of the main classes of elliptical galaxies does each galaxy belong (i.e. ...
ISP205-2 Visions of the Universe The Big Questions
... The Birth of Science (for Thurs) 1. Arrange in order of increasing distance. a. Orion nebula, Jupiter, center of Milky Way, Andromeda galaxy b. Jupiter, Orion nebula, center of Milky Way, Andromeda galaxy c. Center of Milky Way, Orion nebula, Jupiter, Andromeda galaxy d. Jupiter, Center of Milky Way ...
... The Birth of Science (for Thurs) 1. Arrange in order of increasing distance. a. Orion nebula, Jupiter, center of Milky Way, Andromeda galaxy b. Jupiter, Orion nebula, center of Milky Way, Andromeda galaxy c. Center of Milky Way, Orion nebula, Jupiter, Andromeda galaxy d. Jupiter, Center of Milky Way ...
Evidence of the Big Bang and Structure of the Universe
... Each galaxy will have over 100 billion stars, and there are billions of galaxies Type of galaxy is based on shape: elliptical (football-shaped), irregular, and ...
... Each galaxy will have over 100 billion stars, and there are billions of galaxies Type of galaxy is based on shape: elliptical (football-shaped), irregular, and ...
Astronomy – Studying the Stars & Space
... bigger than our sun as red giant or 100 times bigger as a super giant ...
... bigger than our sun as red giant or 100 times bigger as a super giant ...
The Fates of Stars Mass-Luminosity Relation: Lifetime Relation:
... be perfectly accurate; just show the general trend.) Remember that the temp. axis goes backwards. 2. Calculate the mass and total lifetime of one of these stars and fill this entries in the table. Make sure to translate the lifetime to years. (You may do the other stars if you have extra time.) 3. U ...
... be perfectly accurate; just show the general trend.) Remember that the temp. axis goes backwards. 2. Calculate the mass and total lifetime of one of these stars and fill this entries in the table. Make sure to translate the lifetime to years. (You may do the other stars if you have extra time.) 3. U ...
source
... be perfectly accurate; just show the general trend.) Remember that the temp. axis goes backwards. 2. Calculate the mass and total lifetime of one of these stars and fill this entries in the table. Make sure to translate the lifetime to years. (You may do the other stars if you have extra time.) 3. U ...
... be perfectly accurate; just show the general trend.) Remember that the temp. axis goes backwards. 2. Calculate the mass and total lifetime of one of these stars and fill this entries in the table. Make sure to translate the lifetime to years. (You may do the other stars if you have extra time.) 3. U ...
3 - MrFuglestad
... White Dwarf – Earth sized star that is stable with no nuclear reactions and is made of helium or carbon depending on the mass. Less massive than our Sun = Helium. There can be other elements present such as Oxygen, etc. Often the White Dwarf stars are surrounded by nebula. Black Dwarf – This star is ...
... White Dwarf – Earth sized star that is stable with no nuclear reactions and is made of helium or carbon depending on the mass. Less massive than our Sun = Helium. There can be other elements present such as Oxygen, etc. Often the White Dwarf stars are surrounded by nebula. Black Dwarf – This star is ...
SES4U ~ The Formation of Our Solar Systemstudentcopy
... Low density---102cm-3. Compare this to the density of air, 2x1019 cm-3. The minimum mass is a few times the mass of the sun. ...
... Low density---102cm-3. Compare this to the density of air, 2x1019 cm-3. The minimum mass is a few times the mass of the sun. ...
answers
... 2) The Sun has a mass of 2 x 1030 kg and the other stars have masses ranging from 1/10th of this to over 200 times more. How do we know the mass of the other stars? This is done by measuring the period and radii of the ___________ orbiting them. A) moons B) planets C) stars Explain: C) Not Moons. Th ...
... 2) The Sun has a mass of 2 x 1030 kg and the other stars have masses ranging from 1/10th of this to over 200 times more. How do we know the mass of the other stars? This is done by measuring the period and radii of the ___________ orbiting them. A) moons B) planets C) stars Explain: C) Not Moons. Th ...
Lecture 29: Ellipticals and Irregulars
... Integrated light/spectra Emission lines, particularly from neutral hydrogen and molecular gas. ...
... Integrated light/spectra Emission lines, particularly from neutral hydrogen and molecular gas. ...
THE BIG BANG - Dublin City Schools
... more distant galaxies had higher redshifts (light takes millions or even billions of years to reach us from a distant galaxy) This means we are seeing an image from millions or billions of years ago. He noticed that the light, when it was emitted, would have shorter wavelengths. But, he observed lon ...
... more distant galaxies had higher redshifts (light takes millions or even billions of years to reach us from a distant galaxy) This means we are seeing an image from millions or billions of years ago. He noticed that the light, when it was emitted, would have shorter wavelengths. But, he observed lon ...
H II region
An H II region is a large, low-density cloud of partially ionized gas in which star formation has recently taken place. The short-lived blue stars forged in these regions emit copious amounts of ultraviolet light that ionize the surrounding gas. H II regions—sometimes several hundred light-years across—are often associated with giant molecular clouds. The first known H II region was the Orion Nebula, which was discovered in 1610 by Nicolas-Claude Fabri de Peiresc.H II regions are named for the large amount of ionised atomic hydrogen they contain, referred to as H II, pronounced H-two by astronomers (an H I region being neutral atomic hydrogen, and H2 being molecular hydrogen). Such regions have extremely diverse shapes, because the distribution of the stars and gas inside them is irregular. They often appear clumpy and filamentary, sometimes showing bizarre shapes such as the Horsehead Nebula. H II regions may give birth to thousands of stars over a period of several million years. In the end, supernova explosions and strong stellar winds from the most massive stars in the resulting star cluster will disperse the gases of the H II region, leaving behind a cluster of birthed stars such as the Pleiades.H II regions can be seen to considerable distances in the universe, and the study of extragalactic H II regions is important in determining the distance and chemical composition of other galaxies. Spiral and irregular galaxies contain many H II regions, while elliptical galaxies are almost devoid of them. In the spiral galaxies, including the Milky Way, H II regions are concentrated in the spiral arms, while in the irregular galaxies they are distributed chaotically. Some galaxies contain huge H II regions, which may contain tens of thousands of stars. Examples include the 30 Doradus region in the Large Magellanic Cloud and NGC 604 in the Triangulum Galaxy.