Chapter 6 Stars
... from the life cycle of a low-mass or medium-mass star. High-mass stars quickly evolve into brilliant supergiants. When a supergiant runs out of fuel, it can explode suddenly. Within hours, the star blazes millions of times brighter. The explosion is called a supernova. After a supernova, some of th ...
... from the life cycle of a low-mass or medium-mass star. High-mass stars quickly evolve into brilliant supergiants. When a supergiant runs out of fuel, it can explode suddenly. Within hours, the star blazes millions of times brighter. The explosion is called a supernova. After a supernova, some of th ...
Project 4: The HR diagram. Open clusters
... The objective of this project is to learn how to produce colour‐magnitude diagrams of star clusters using CCD images obtained with the CCD system at our observatory. The technique involves getting images of the cluster through two filters, B and V in our case, reducing the data and pl ...
... The objective of this project is to learn how to produce colour‐magnitude diagrams of star clusters using CCD images obtained with the CCD system at our observatory. The technique involves getting images of the cluster through two filters, B and V in our case, reducing the data and pl ...
The Interstellar Medium
... A World of Interstellar Medium The space between the stars is not completely empty, but filled with very dilute gas and dust, producing some of the most beautiful objects in the sky. We are interested in the interstellar ...
... A World of Interstellar Medium The space between the stars is not completely empty, but filled with very dilute gas and dust, producing some of the most beautiful objects in the sky. We are interested in the interstellar ...
Document
... • How do stellar orbits in the disk differ from those in the halo? • Stars in the disk all orbit the galactic center in about the same plane and in the same direction. Halo stars also orbit the center of the galaxy, but with orbits randomly inclined to the disk of the galaxy. • How long does it take ...
... • How do stellar orbits in the disk differ from those in the halo? • Stars in the disk all orbit the galactic center in about the same plane and in the same direction. Halo stars also orbit the center of the galaxy, but with orbits randomly inclined to the disk of the galaxy. • How long does it take ...
Name
... If the statement is true, write true. If the statement is false, change the underlined word or words to make the statement true. ...
... If the statement is true, write true. If the statement is false, change the underlined word or words to make the statement true. ...
young science communicator`s competition
... and it seems that Shapley was right, the galaxy is indeed much bigger than expected and in fact, the sun is not at the centre of the galaxy, we seem to live quite far from it. [There is a stunned silence] SHAPLEY: So it seems we were both right. CURTIS: And both wrong. [The crowd cheers and sound f ...
... and it seems that Shapley was right, the galaxy is indeed much bigger than expected and in fact, the sun is not at the centre of the galaxy, we seem to live quite far from it. [There is a stunned silence] SHAPLEY: So it seems we were both right. CURTIS: And both wrong. [The crowd cheers and sound f ...
Lecture 14: Star Formation
... Energy Transport=Energy Generation How did it get this way? We cannot observe the whole formation process for a single star. But we can learn a lot from observations of protostars and pre-main sequence stars in different stages of formation. We can learn both what they look like, and, from the numbe ...
... Energy Transport=Energy Generation How did it get this way? We cannot observe the whole formation process for a single star. But we can learn a lot from observations of protostars and pre-main sequence stars in different stages of formation. We can learn both what they look like, and, from the numbe ...
Gravity Defied From Potato Asteroids to Magnetised Neutron Stars
... 1. The Stars The nature of the stars has been questioned and debated over ever since the dawn of human intelligence. Yet, it’s only in the late nineteenth century when the Sun and other stars have been understood to be self-gravitating gaseous objects. We now know that the Sun is powered by nuclear ...
... 1. The Stars The nature of the stars has been questioned and debated over ever since the dawn of human intelligence. Yet, it’s only in the late nineteenth century when the Sun and other stars have been understood to be self-gravitating gaseous objects. We now know that the Sun is powered by nuclear ...
Where do elements come from?
... The amount of energy released is so great, that most of the elements heavier than Iron (Fe) are instantly created. ...
... The amount of energy released is so great, that most of the elements heavier than Iron (Fe) are instantly created. ...
Lecture 2
... The age of the Galaxy is currently estimated to be about 13.6 billion years, which is nearly as old as the Universe itself (Pasquini et al. 2004). The galactic disk has an estimated diameter of about 100,000 light-years. The distance from the Sun to the galactic center is estimated at about 27,700 l ...
... The age of the Galaxy is currently estimated to be about 13.6 billion years, which is nearly as old as the Universe itself (Pasquini et al. 2004). The galactic disk has an estimated diameter of about 100,000 light-years. The distance from the Sun to the galactic center is estimated at about 27,700 l ...
Forming disk galaxies in magneto-hydro
... expected structure of the magnetic field in a spiral galaxy directly from the initial conditions left behind after the hot Big Bang. It turns out that already an extremely tiny magnetic field left behind by the Big Bang is sufficient to explain the orders of magnitude larger field strengths observed ...
... expected structure of the magnetic field in a spiral galaxy directly from the initial conditions left behind after the hot Big Bang. It turns out that already an extremely tiny magnetic field left behind by the Big Bang is sufficient to explain the orders of magnitude larger field strengths observed ...
Chapter21
... The energy released by carbon fusion triggers a series of nuclear reactions that blow the star apart. 23. X-ray bursts occur whenever freshly accumulated gas becomes hot enough for helium fusion to occur. 24. Both candidates are in binary systems. The distances and orbital speeds of the companions o ...
... The energy released by carbon fusion triggers a series of nuclear reactions that blow the star apart. 23. X-ray bursts occur whenever freshly accumulated gas becomes hot enough for helium fusion to occur. 24. Both candidates are in binary systems. The distances and orbital speeds of the companions o ...
Slide 1
... supernova is an exploding star that can become three times as bright as the sun. When a supernova occurs. All the dust particles, gas, and Dupree collect up. Creating a Nebula. These Nebulas can create many stars like our sun. Some stars can be brighter then others. This is an example of a Supernova ...
... supernova is an exploding star that can become three times as bright as the sun. When a supernova occurs. All the dust particles, gas, and Dupree collect up. Creating a Nebula. These Nebulas can create many stars like our sun. Some stars can be brighter then others. This is an example of a Supernova ...
Study Guide #3 Answer Key
... newly confirmed to be a supermassive black hole. For a photo see Chandra X-ray Observatory; Jan. 6, 2003 Most galaxies are believed to have a supermassive black hole at their center.[24] The Galaxy's bar is thought to be about 27,000 light-years long, running through its center at a 44 ± 10 degree a ...
... newly confirmed to be a supermassive black hole. For a photo see Chandra X-ray Observatory; Jan. 6, 2003 Most galaxies are believed to have a supermassive black hole at their center.[24] The Galaxy's bar is thought to be about 27,000 light-years long, running through its center at a 44 ± 10 degree a ...
Lec11_2D
... Between any two stars are gravitational balance points, where the attraction of one star equals the attraction of the other. The point directly between the stars is called the Lagrange point. The balance points in general map out the star’s Roche Lobe. If a star’s surface extends further than its Ro ...
... Between any two stars are gravitational balance points, where the attraction of one star equals the attraction of the other. The point directly between the stars is called the Lagrange point. The balance points in general map out the star’s Roche Lobe. If a star’s surface extends further than its Ro ...
Joining the Party - Lincoln-Sudbury Regional High School
... Obviously, astronomers are very interested in the stages of the cloud collapse that occur before the star is born. The protostellar cloud is not very luminous, however, since it is not generating energy by fusion reactions. So our first question is this: what kind of observations can astronomers mak ...
... Obviously, astronomers are very interested in the stages of the cloud collapse that occur before the star is born. The protostellar cloud is not very luminous, however, since it is not generating energy by fusion reactions. So our first question is this: what kind of observations can astronomers mak ...
February 16
... Discussion But, what if there is a lot of dust between us and the object we are observing. That would make the object appear fainter and we would be misled into thinking the object was much farther away than it really is. How can astronomers determine if dust is making things fainter? ...
... Discussion But, what if there is a lot of dust between us and the object we are observing. That would make the object appear fainter and we would be misled into thinking the object was much farther away than it really is. How can astronomers determine if dust is making things fainter? ...
Problem Set No. 5
... sun only burns a fraction (about 10%) of its hydrogen before leaving the main sequence. While a 0.4 M⊙ star may burn a larger fraction of its hydrogen, we do not think it would burn it all before leaving the main sequence. If, however, it were fully mixed, it would burn all its hydrogen and could th ...
... sun only burns a fraction (about 10%) of its hydrogen before leaving the main sequence. While a 0.4 M⊙ star may burn a larger fraction of its hydrogen, we do not think it would burn it all before leaving the main sequence. If, however, it were fully mixed, it would burn all its hydrogen and could th ...
Astronomy ANSWER KEY KEEP SECURE
... angstroms. 4830Å, Wien's Law λmax= b/T, Wien's Displacement Constant b=2,897,768.5nm, T=temperature in Kelvin, 483.0nm = 4830Å 39. What is the distance to a star, in pc, if its apparent magnitude is 0.14 and its absolute magnitude is 7.1? 281pc, d=10(m-M+5/5), d=10(0.14- -7.1+5/5) ...
... angstroms. 4830Å, Wien's Law λmax= b/T, Wien's Displacement Constant b=2,897,768.5nm, T=temperature in Kelvin, 483.0nm = 4830Å 39. What is the distance to a star, in pc, if its apparent magnitude is 0.14 and its absolute magnitude is 7.1? 281pc, d=10(m-M+5/5), d=10(0.14- -7.1+5/5) ...
Final Exam: Chs 4-5, 12-17
... a. solar wind particles become trapped in the Earth's magnetic field. b. thermonuclear reactions halt the contraction of a protostar. c. magnetic fields inhibit the motion of charged particles in sunspots. d. electrons inside a star resist being pushed closer together than a certain limit. ____ 50. ...
... a. solar wind particles become trapped in the Earth's magnetic field. b. thermonuclear reactions halt the contraction of a protostar. c. magnetic fields inhibit the motion of charged particles in sunspots. d. electrons inside a star resist being pushed closer together than a certain limit. ____ 50. ...
Determining the Sizes of Stars Using the HR Diagram
... after finishing their time as a main sequence star. These stars grow in radius, and can change temperature dramatically, but they do not change much in luminosity. ● White Dwarfs: White dwarfs are the end states of stars less than around 6 times the mass of the Sun. The white dwarf is the core of th ...
... after finishing their time as a main sequence star. These stars grow in radius, and can change temperature dramatically, but they do not change much in luminosity. ● White Dwarfs: White dwarfs are the end states of stars less than around 6 times the mass of the Sun. The white dwarf is the core of th ...
Stellar kinematics
Stellar kinematics is the study of the movement of stars without needing to understand how they acquired their motion. This differs from stellar dynamics, which takes into account gravitational effects. The motion of a star relative to the Sun can provide useful information about the origin and age of a star, as well as the structure and evolution of the surrounding part of the Milky Way.In astronomy, it is widely accepted that most stars are born within molecular clouds known as stellar nurseries. The stars formed within such a cloud compose open clusters containing dozens to thousands of members. These clusters dissociate over time. Stars that separate themselves from the cluster's core are designated as members of the cluster's stellar association. If the remnant later drifts through the Milky Way as a coherent assemblage, then it is termed a moving group.