Lecture 42
... emission and absorption lines are much weaker and excess infrared emission is absent. The inference is that the disk has largely dissipated by this stage. Like classical T-Tauri stars, weak-lined T-Tauri stars are cooler yet more luminous than mature main sequence stars of similar mass, but they are ...
... emission and absorption lines are much weaker and excess infrared emission is absent. The inference is that the disk has largely dissipated by this stage. Like classical T-Tauri stars, weak-lined T-Tauri stars are cooler yet more luminous than mature main sequence stars of similar mass, but they are ...
Exercise 7
... sequence stars, like the Sun, are class V, whereas supergiants are class IA or IB. Building the basic model A. Select a base. We’ll start with the bases with labels printed in black. Note the coordinates and note the name and stellar spectral type of the star. The Sun is set up as an example. B. Usi ...
... sequence stars, like the Sun, are class V, whereas supergiants are class IA or IB. Building the basic model A. Select a base. We’ll start with the bases with labels printed in black. Note the coordinates and note the name and stellar spectral type of the star. The Sun is set up as an example. B. Usi ...
Homework #7 (Ch. 19)
... mass, to be able to collapse than a cloud that is spinning slowly or not at all. Rapid spin also causes the cloud to flatten into a disk. Although most of the mass is still concentrated in the center, the material in the disk could form into planets. 4. Chaisson Review and Discussion 19.6 Why do sta ...
... mass, to be able to collapse than a cloud that is spinning slowly or not at all. Rapid spin also causes the cloud to flatten into a disk. Although most of the mass is still concentrated in the center, the material in the disk could form into planets. 4. Chaisson Review and Discussion 19.6 Why do sta ...
Mass Segregation in Globular Clusters
... The structure of a stellar system—the distribution of the positions and velocities of its stars—depends on competing processes that have varying natural timescales. These include random collision, orbital motion about the center, and even ejection from the cluster via the gravitationally induced “sl ...
... The structure of a stellar system—the distribution of the positions and velocities of its stars—depends on competing processes that have varying natural timescales. These include random collision, orbital motion about the center, and even ejection from the cluster via the gravitationally induced “sl ...
Review: How does a star`s mass determine its life story?
... Two Types of Supernova Massive star supernova: Iron core of massive star reaches white dwarf limit and collapses into a neutron star, causing explosion White dwarf supernova: Carbon fusion suddenly begins as white dwarf in close binary system reaches white dwarf limit, causing total explosion ...
... Two Types of Supernova Massive star supernova: Iron core of massive star reaches white dwarf limit and collapses into a neutron star, causing explosion White dwarf supernova: Carbon fusion suddenly begins as white dwarf in close binary system reaches white dwarf limit, causing total explosion ...
2009 Assessment Schedule (90764)
... star or a large cool star (m), eg: A small hot object has same luminosity with smaller surface area, so higher surface temperature – gives idea of smaller surface area (or size) therefore higher temperature. ...
... star or a large cool star (m), eg: A small hot object has same luminosity with smaller surface area, so higher surface temperature – gives idea of smaller surface area (or size) therefore higher temperature. ...
Some space objects are visible to the human eye.
... your bare eyes are part of a galaxy called the Milky Way. A galaxy is a group of millions or billions of stars held together by their own gravity. If the solar system were the size of a penny, the Milky Way would stretch from Chicago to Dallas. Most stars in the Milky Way are so far away that our ga ...
... your bare eyes are part of a galaxy called the Milky Way. A galaxy is a group of millions or billions of stars held together by their own gravity. If the solar system were the size of a penny, the Milky Way would stretch from Chicago to Dallas. Most stars in the Milky Way are so far away that our ga ...
Extreme Stars
... Only certain combinations of size and mass are stable Stars will shrink or expand to reach stability ...
... Only certain combinations of size and mass are stable Stars will shrink or expand to reach stability ...
Stars
... Life span of a star depends on its size. – Very large, massive stars burn their fuel much faster than smaller stars – Main sequence may last only a few hundred thousand years – Smaller stars will live on for billions of years because they burn their fuel much more slowly ...
... Life span of a star depends on its size. – Very large, massive stars burn their fuel much faster than smaller stars – Main sequence may last only a few hundred thousand years – Smaller stars will live on for billions of years because they burn their fuel much more slowly ...
EMR, Telescopes, Stars, Solar System study guide `14-15
... 9. The distance that light travels in a year is known as a _________________________. 10. The time it takes light from a star 100 light years away to reach Earth is ___________________. 11. Parallax is used to find the ____________________________ to nearby stars. 12. Astronomers use a _____________ ...
... 9. The distance that light travels in a year is known as a _________________________. 10. The time it takes light from a star 100 light years away to reach Earth is ___________________. 11. Parallax is used to find the ____________________________ to nearby stars. 12. Astronomers use a _____________ ...
Beauty and the beast - University of Wyoming
... have dusty disks, which are indicators of a planetary system, around them. Gaze east of Orion and see the star Sirius, a.k.a the dog star. Sirius is the brightest star in the sky (excluding the sun). Here in Wyoming, Sirius never travels very high in the sky. It rises in the east, grazes the horizon ...
... have dusty disks, which are indicators of a planetary system, around them. Gaze east of Orion and see the star Sirius, a.k.a the dog star. Sirius is the brightest star in the sky (excluding the sun). Here in Wyoming, Sirius never travels very high in the sky. It rises in the east, grazes the horizon ...
SAMPLE THIRD MIDTERM
... 35. Stars A and B have the same luminosity. If star B is 5 times farther from you than star A, how much dimmer will star B appear to you? a) 25 times dimmer b) 5 times dimmer c) 5 times dimmer d) it will appear the same as star A ...
... 35. Stars A and B have the same luminosity. If star B is 5 times farther from you than star A, how much dimmer will star B appear to you? a) 25 times dimmer b) 5 times dimmer c) 5 times dimmer d) it will appear the same as star A ...
Milky Way structure
... Galactic center, about three quarters of the distance to the Sagittarius dwarf and a quarter of the distance to the LMC. The discovery was made in data from the 2MASS-sky survey, where infrared light allows a better view through our optically opaque Galactic plane. The labeled illustration above sho ...
... Galactic center, about three quarters of the distance to the Sagittarius dwarf and a quarter of the distance to the LMC. The discovery was made in data from the 2MASS-sky survey, where infrared light allows a better view through our optically opaque Galactic plane. The labeled illustration above sho ...
1st Semester Earth Science Review 2014-15
... ____ 37. During the main sequence stage, how is energy generated in a star’s core? a. Hydrogen fuses into helium. c. Helium fuses into hydrogen. b. Carbon fuses into hydrogen. d. Carbon fuses into oxygen. ____ 38. How long would a star with the sun’s mass stay on the main sequence? a. a million year ...
... ____ 37. During the main sequence stage, how is energy generated in a star’s core? a. Hydrogen fuses into helium. c. Helium fuses into hydrogen. b. Carbon fuses into hydrogen. d. Carbon fuses into oxygen. ____ 38. How long would a star with the sun’s mass stay on the main sequence? a. a million year ...
d - Haus der Astronomie
... LightYear Year(l.y.): (l.y.):the thedistance distancethat that light lighttravels travelsininaavacuum vacuumininone oneyear year with withaaspeed speedofof~~300 ...
... LightYear Year(l.y.): (l.y.):the thedistance distancethat that light lighttravels travelsininaavacuum vacuumininone oneyear year with withaaspeed speedofof~~300 ...
file - University of California San Diego
... The globular clusters are dense clusters of stars that form a halo around our own galaxy, the Milky Way. "These areas contain some of our oldest stars, the ones that are least rich in elements heavier than hydrogen," says Burbidge. "With FOS, we'll try to resolve the centers of these clusters and de ...
... The globular clusters are dense clusters of stars that form a halo around our own galaxy, the Milky Way. "These areas contain some of our oldest stars, the ones that are least rich in elements heavier than hydrogen," says Burbidge. "With FOS, we'll try to resolve the centers of these clusters and de ...
Nuclear fusion in stars and laboratories
... this must be a nuclear energy source. ² Nuclear energy is quite capable in the case of the sun of providing the entire energy output. From the typical binding energy of a nucleon in a nucleus of 8 MeV, compared to the value of mc2 ¼ 940 MeV, we see that combining H into heavier nuclei releases about ...
... this must be a nuclear energy source. ² Nuclear energy is quite capable in the case of the sun of providing the entire energy output. From the typical binding energy of a nucleon in a nucleus of 8 MeV, compared to the value of mc2 ¼ 940 MeV, we see that combining H into heavier nuclei releases about ...
Properties of Stars
... Sometimes the orbital plane is lined up so that the stars pass in front of each other as seen from the Earth. Each eclipse will cause the total light from the system to decrease. The amount of the decrease will depend on how much of each star is covered up (they can have different sizes) and on the ...
... Sometimes the orbital plane is lined up so that the stars pass in front of each other as seen from the Earth. Each eclipse will cause the total light from the system to decrease. The amount of the decrease will depend on how much of each star is covered up (they can have different sizes) and on the ...
13 Space Photos To Remind You The Universe Is
... This composite image shows a superbubble in the Large Magellanic Cloud (LMC), a small satellite galaxy of the Milky Way, located about 160,000 light years from Earth. Massive stars in the cluster produce intense radiation, expel matter at high speeds, and explode relatively quickly as supernovas. Wi ...
... This composite image shows a superbubble in the Large Magellanic Cloud (LMC), a small satellite galaxy of the Milky Way, located about 160,000 light years from Earth. Massive stars in the cluster produce intense radiation, expel matter at high speeds, and explode relatively quickly as supernovas. Wi ...
Chapter 14 The Milky Way Galaxy
... • Cepheids have a luminosity that is strongly correlated with the period of their oscillations; once the period is measured, the luminosity is known and we can proceed as above. ...
... • Cepheids have a luminosity that is strongly correlated with the period of their oscillations; once the period is measured, the luminosity is known and we can proceed as above. ...
Brown_Dwarfs
... form. The brown dwarf becomes very similar to Jupiter in both appearance and luminosity. By this point, brown dwarfs are so faint they become nearly undetectable by visual means, depending on their distance from earth. ...
... form. The brown dwarf becomes very similar to Jupiter in both appearance and luminosity. By this point, brown dwarfs are so faint they become nearly undetectable by visual means, depending on their distance from earth. ...
10438 starlight - The Described and Captioned Media Program
... krn (about 6 million miles). Milky Way-A large spiral galaxy of about a hundred billion stars arrayed in the form of a disk, with a central bulge (some 30,000 light-years across) of closely packed stars. The Milky Way is the galaxy that contains Earth. nuclear fusion-The ...
... krn (about 6 million miles). Milky Way-A large spiral galaxy of about a hundred billion stars arrayed in the form of a disk, with a central bulge (some 30,000 light-years across) of closely packed stars. The Milky Way is the galaxy that contains Earth. nuclear fusion-The ...