The Solar System - Astronomy - The University of Texas at Austin
... Death of Stars --> Explosion, expelling the synthesized elements into space ...
... Death of Stars --> Explosion, expelling the synthesized elements into space ...
How do stars form?
... How do we know the timing? • Age of Sun via chemical composition and known rate of fusion: about 5 Ga ...
... How do we know the timing? • Age of Sun via chemical composition and known rate of fusion: about 5 Ga ...
Homework, August 29, 2002 AST110-6
... (Hint: What particles that are generated by the fusion of hydrogen can escape from the interior of the Sun immediately?) 2. Chapter 11, Review Question 7. What is the defining characteristic of a main-sequence star? How is surface temperature related to luminosity for main-sequence stars? (20pt) ...
... (Hint: What particles that are generated by the fusion of hydrogen can escape from the interior of the Sun immediately?) 2. Chapter 11, Review Question 7. What is the defining characteristic of a main-sequence star? How is surface temperature related to luminosity for main-sequence stars? (20pt) ...
I : Internal structure of main sequence stars
... The luminosity L The efficiency of the fusion η The mass of the star M The fraction of the stellar mass that can participate in the fusion reactions f ...
... The luminosity L The efficiency of the fusion η The mass of the star M The fraction of the stellar mass that can participate in the fusion reactions f ...
PowerPoint Presentation - ASTR498E High energy
... The mass of the star M The fraction of the stellar mass that can participate in the fusion reactions f ...
... The mass of the star M The fraction of the stellar mass that can participate in the fusion reactions f ...
Chapter 8: Energy Quantization
... 1. While the electron is most likely to be found at certain radii, which in the language of quantum mechanics is the expectation value, they
must be treated as waves and therefore do not
have fixed radial distances. In fact, the electrons
do not travel in circular orbits, but can be found
anywh ...
... 1. While the electron is most likely to be found at certain radii, which in the language of quantum mechanics is the expectation value
microsoft word
... a particular star shows the same hydrogen line appearing at a wavelength of 121.8 nm. What can we conclude? a. The “star” is actually a planet. b. The star is getting colder. c. The star is getting hotter. d. The star is moving away from us. e. The star is moving towards us. 3. (1) True or False: Ne ...
... a particular star shows the same hydrogen line appearing at a wavelength of 121.8 nm. What can we conclude? a. The “star” is actually a planet. b. The star is getting colder. c. The star is getting hotter. d. The star is moving away from us. e. The star is moving towards us. 3. (1) True or False: Ne ...
What YOU can do! - Bangalore Astronomical Society
... See beautiful nebulae, galaxies etc and enjoy ...
... See beautiful nebulae, galaxies etc and enjoy ...
Physics 102 Quiz 4 - Solutions March 21, 2003 1. (1) Which of the
... a particular star shows the same hydrogen line appearing at a wavelength of 121.8 nm. What can we conclude? a. The “star” is actually a planet. b. The star is getting colder. c. The star is getting hotter. d. The star is moving away from us. e. The star is moving towards us. 3. (1) True or False: Ne ...
... a particular star shows the same hydrogen line appearing at a wavelength of 121.8 nm. What can we conclude? a. The “star” is actually a planet. b. The star is getting colder. c. The star is getting hotter. d. The star is moving away from us. e. The star is moving towards us. 3. (1) True or False: Ne ...
PART 3 Galaxies
... – Some stars follow unusual orbits in the galaxy – Not all Pop II stars are the same age – Model predicts that the first stars might not have been very massive, and should still be around! ...
... – Some stars follow unusual orbits in the galaxy – Not all Pop II stars are the same age – Model predicts that the first stars might not have been very massive, and should still be around! ...
Galaxies - TeacherWeb
... and matter in the universe. Today galaxies are still being formed. Particles that are not made up of protons or neutrons that were unable to create galaxies, planets, or stars became what we call dark matter. This is what scientist claim to be dark matter, but they’re not really sure what it’s purpo ...
... and matter in the universe. Today galaxies are still being formed. Particles that are not made up of protons or neutrons that were unable to create galaxies, planets, or stars became what we call dark matter. This is what scientist claim to be dark matter, but they’re not really sure what it’s purpo ...
Planetary Configurations
... • Recall escape speed: • The Sch. Radius (RS) is the distance at which vesc=c for a BH: ...
... • Recall escape speed: • The Sch. Radius (RS) is the distance at which vesc=c for a BH: ...
Regulus the Star njw
... Latin word Rex which means King It is associated with many cultures like the Greeks , Arabs, and Ancient Babylon It also is know as one of the four Royal Stars of the Heavens ...
... Latin word Rex which means King It is associated with many cultures like the Greeks , Arabs, and Ancient Babylon It also is know as one of the four Royal Stars of the Heavens ...
1. Seyfert Galaxies
... and [N I] to highly ionized cases such as [Ne V] and [O VI]. Even hot stars cannot ionize gas as highly as these ions require, so that both a strong source of hard radiation and a wide range in gas density must be present to see such spectra. ...
... and [N I] to highly ionized cases such as [Ne V] and [O VI]. Even hot stars cannot ionize gas as highly as these ions require, so that both a strong source of hard radiation and a wide range in gas density must be present to see such spectra. ...
Electrons in Atoms - Duplin County Schools
... Although the speed of all electromagnetic waves is the same, waves may have different wavelengths and frequencies ...
... Although the speed of all electromagnetic waves is the same, waves may have different wavelengths and frequencies ...
ASTRONOMY 5
... d) It is the epoch “before” which space and time are ill-defined. e) Understanding the Universe before the Planck time requires a fully unified theory of the GUT force and gravity. ...
... d) It is the epoch “before” which space and time are ill-defined. e) Understanding the Universe before the Planck time requires a fully unified theory of the GUT force and gravity. ...
Chpt14b
... of galaxies is very reminiscent of the formation process for solar systems. Giant cloud of gas and dust, shrinks under its own gravity, rotation produces a flattened disk. The halo objects probably formed first and retained their spherical distribution and didn’t get pulled into the disk. ...
... of galaxies is very reminiscent of the formation process for solar systems. Giant cloud of gas and dust, shrinks under its own gravity, rotation produces a flattened disk. The halo objects probably formed first and retained their spherical distribution and didn’t get pulled into the disk. ...
Linking Asteroids and Meteorites through Reflectance Spectroscopy
... • Electron is then free to move around • Electrical voltages on the surface pull the freed electrons into the nearest pixel • The number of freed electrons per pixel is proportional to the number of photons hitting it • An electronic device connected to a computer counts the number of electrons and ...
... • Electron is then free to move around • Electrical voltages on the surface pull the freed electrons into the nearest pixel • The number of freed electrons per pixel is proportional to the number of photons hitting it • An electronic device connected to a computer counts the number of electrons and ...
H2 and other molecules
... Various tracers can be used, CO for the wide scale more diffuse and extended medium, the dense cores by HCN, CS, etc.. The CO lines (J=1-0 at 2.6mm, J=2-1 at 1.3mm) are most often optically thick At least locally every molecular cloud is optically thick Although the "macroscopic" depth is not reali ...
... Various tracers can be used, CO for the wide scale more diffuse and extended medium, the dense cores by HCN, CS, etc.. The CO lines (J=1-0 at 2.6mm, J=2-1 at 1.3mm) are most often optically thick At least locally every molecular cloud is optically thick Although the "macroscopic" depth is not reali ...
CCR 22: Scattering of Starlight
... Starlight, like all other kinds of electromagnetic (EM) radiation, is absorbed and scattered by the gas molecules and dust in the interstellar medium (ISM). These processes depend on the atomic and molecular composition of the ISM. In addition, the second process depends on the size of the dust part ...
... Starlight, like all other kinds of electromagnetic (EM) radiation, is absorbed and scattered by the gas molecules and dust in the interstellar medium (ISM). These processes depend on the atomic and molecular composition of the ISM. In addition, the second process depends on the size of the dust part ...
Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, which radiates from stars and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.