Lecture 5
... The Sun collapsed until a new source of energy offset the losses to radiation. NUCLEAR FUSION --- IT’S BURNING HYDROGEN As long as it burns H at this rate, it will be stable. ...
... The Sun collapsed until a new source of energy offset the losses to radiation. NUCLEAR FUSION --- IT’S BURNING HYDROGEN As long as it burns H at this rate, it will be stable. ...
Today`s Powerpoint
... from the Sun and found it to be lower than expected (by 30-50%) Confirmed in subsequent experiments Theory of p-p fusion well understood Solar interior well understood ...
... from the Sun and found it to be lower than expected (by 30-50%) Confirmed in subsequent experiments Theory of p-p fusion well understood Solar interior well understood ...
Slides
... (you don’t need to know numbers, just the idea below) Mass of 4 H Atoms = 6.693 × 10-24 g Mass of 1 He Atom = 6.645 × 10-24 g Difference ...
... (you don’t need to know numbers, just the idea below) Mass of 4 H Atoms = 6.693 × 10-24 g Mass of 1 He Atom = 6.645 × 10-24 g Difference ...
![31 — Main-Sequence Stars [Revision : 1.1]](http://s1.studyres.com/store/data/015926256_1-97d746cbe97ccc13b433136b208bf071-300x300.png)
31 — Main-Sequence Stars [Revision : 1.1]
... ∗ Higher luminosity means that CNO cycle must be used to match star’s energy generation needs ∗ High temperature sensitivity (∼ T 19 ) means centrally-concentrated energy generation ∗ So, luminosity Lr grows raidly in core, and F = Lr /4πr2 is large ∗ To transport all energy by radiation, temperatur ...
... ∗ Higher luminosity means that CNO cycle must be used to match star’s energy generation needs ∗ High temperature sensitivity (∼ T 19 ) means centrally-concentrated energy generation ∗ So, luminosity Lr grows raidly in core, and F = Lr /4πr2 is large ∗ To transport all energy by radiation, temperatur ...
PLANETARY ATMOSPHERES HOMEWORK
... The mean distance from the Sun to Mercury, Venus, Earth, Mars and Jupiter are 0.39, 0.72, 1.0, 1.5, and 5.2 AU. Assume that the density, solar wind speed, total magnetic field, and temperature at the base of the corona are 20x104 #/cc, 450 km/sec, 2,5x106 oK, radial (Br) component of magnetic field ...
... The mean distance from the Sun to Mercury, Venus, Earth, Mars and Jupiter are 0.39, 0.72, 1.0, 1.5, and 5.2 AU. Assume that the density, solar wind speed, total magnetic field, and temperature at the base of the corona are 20x104 #/cc, 450 km/sec, 2,5x106 oK, radial (Br) component of magnetic field ...
The Sun
... pressure (340 billion times Earth's air pressure at sea level) is so intense that nuclear reactions take place. ...
... pressure (340 billion times Earth's air pressure at sea level) is so intense that nuclear reactions take place. ...
Can you write numbers in scientific notation
... should be noted that some items from lecture may not be included on this review sheet, but will still be referenced on the exam. As such, use these questions as a reminder of the material that was covered in the lectures while studying from the textbook and the notes you took during lectures. Questi ...
... should be noted that some items from lecture may not be included on this review sheet, but will still be referenced on the exam. As such, use these questions as a reminder of the material that was covered in the lectures while studying from the textbook and the notes you took during lectures. Questi ...
Day 1212
... Russell studied the relationship between absolute magnitude and temperature of stars. ...
... Russell studied the relationship between absolute magnitude and temperature of stars. ...
SISTERS OF THE SUN
... • Henrietta Swan Leavitt discovered the law astronomers use to measure 5. English astronomer Cecilia Payne had to emigrate to ______________________________ in order to study astronomy. 6. When Russell dismissed Payne’s conclusions on the composition stars, A. she stood her ground and pushed ahead w ...
... • Henrietta Swan Leavitt discovered the law astronomers use to measure 5. English astronomer Cecilia Payne had to emigrate to ______________________________ in order to study astronomy. 6. When Russell dismissed Payne’s conclusions on the composition stars, A. she stood her ground and pushed ahead w ...
Due Date: Thursday, November 16, 2006
... However, we should be able to tell that the hydrogen fusion in the core has stopped by observing the solar neutrinos. The neutrinos do not interact with the solar plasma, and can escape the Sun and reach Earth in about 8 minutes. So, we would find that the neutrino flux is decreased. 2. Chapter 11, ...
... However, we should be able to tell that the hydrogen fusion in the core has stopped by observing the solar neutrinos. The neutrinos do not interact with the solar plasma, and can escape the Sun and reach Earth in about 8 minutes. So, we would find that the neutrino flux is decreased. 2. Chapter 11, ...
Toilet Paper Scale Model of the Solar System
... Toilet Paper Scale Model of the Solar System The following table shows the average distances from the sun for each planet. The first measurements are in miles and the second measurements are in astronomical units. An astronomical unit is defined as the distance from the sun to the Earth, which is ab ...
... Toilet Paper Scale Model of the Solar System The following table shows the average distances from the sun for each planet. The first measurements are in miles and the second measurements are in astronomical units. An astronomical unit is defined as the distance from the sun to the Earth, which is ab ...
The Sun : Our Closest Star
... 2. Prominences = huge columns of gas that fly out from the sun. They are thousands of miles long. UV & X-rays increase. ...
... 2. Prominences = huge columns of gas that fly out from the sun. They are thousands of miles long. UV & X-rays increase. ...
Stars - White Plains Public Schools
... Luminosity is how bright a star is compared to the Sun if they were the same distance away. Stars are classified based on luminosity and temperature. Temperature affects the color of stars. Red = cool Blue = hot ...
... Luminosity is how bright a star is compared to the Sun if they were the same distance away. Stars are classified based on luminosity and temperature. Temperature affects the color of stars. Red = cool Blue = hot ...
Ay 101 - The Physics of Stars – fall 2015 -... Homework 1, due Friday Oct 9 at class (2 pm)
... At a certain depth in a star, three ions of a given element have the following ionization fractions: f1 = 0.10, f2 = 0.85, and f3 = 0.05. Their partition functions (degeneracies) are g1 = 1, g2 = 2, g3 = 8. The ionization energy from the fundamental level for ion 1 is 30 eV, and it is 55 eV for ion ...
... At a certain depth in a star, three ions of a given element have the following ionization fractions: f1 = 0.10, f2 = 0.85, and f3 = 0.05. Their partition functions (degeneracies) are g1 = 1, g2 = 2, g3 = 8. The ionization energy from the fundamental level for ion 1 is 30 eV, and it is 55 eV for ion ...
OH Science Standards for STARS
... o The sun appears to be the largest star in the sky because it is the closest star to Earth. Some stars are larger than the sun and some stars are smaller than the sun. Most of the cycles and patterns of motion between the Earth and sun are predictable. o Earth’s revolution around the sun takes ap ...
... o The sun appears to be the largest star in the sky because it is the closest star to Earth. Some stars are larger than the sun and some stars are smaller than the sun. Most of the cycles and patterns of motion between the Earth and sun are predictable. o Earth’s revolution around the sun takes ap ...
Study Guide
... Giant - helium is being fused into carbon and the star is now brighter but cooler Supernova - violent explosion of a massive star when the core collapses causing the outer layers to blow away main sequence star - as soon as fusion starts, the star is in this stage fusing hydrogen into helium Protost ...
... Giant - helium is being fused into carbon and the star is now brighter but cooler Supernova - violent explosion of a massive star when the core collapses causing the outer layers to blow away main sequence star - as soon as fusion starts, the star is in this stage fusing hydrogen into helium Protost ...
Nucleosynthesis and the death of stars
... • A Type I supernova is a massive explosion of a star that occurs under two possible scenarios. The first is that a white dwarf star undergoes a nuclear based explosion after it reaches its Chandrasekhar limit (1.44 solar masses) from absorbing mass from a neighboring star (usually a red giant). • A ...
... • A Type I supernova is a massive explosion of a star that occurs under two possible scenarios. The first is that a white dwarf star undergoes a nuclear based explosion after it reaches its Chandrasekhar limit (1.44 solar masses) from absorbing mass from a neighboring star (usually a red giant). • A ...
Why do the stars shine?
... (Diameter of Sun = 1.39x 106 km.) Sun is 100 Earth diameters across (1.3 x 104 km) Edge of the Solar system is about 100 AU Distance of Oort Cloud is 100,000 AU Distance to nearest star is 200,000 AU (1 pc) Distance to center of the Galaxy is 8000 pc Distance to nearest big Galaxy is 800,000 pc Dist ...
... (Diameter of Sun = 1.39x 106 km.) Sun is 100 Earth diameters across (1.3 x 104 km) Edge of the Solar system is about 100 AU Distance of Oort Cloud is 100,000 AU Distance to nearest star is 200,000 AU (1 pc) Distance to center of the Galaxy is 8000 pc Distance to nearest big Galaxy is 800,000 pc Dist ...