![Irregular Galaxies](http://s1.studyres.com/store/data/008082998_1-771bed73df95185b57ef3d0e0f5da6f8-300x300.png)
Irregular Galaxies
... • Although this is a similar term, a nova and a supernova are very different. • A supernova is when a massive star that has a tremendous increase in its energy output due to a catastrophic explosion of its core. • Supernovas can light up the sky for many weeks. • The core of the star becomes tremend ...
... • Although this is a similar term, a nova and a supernova are very different. • A supernova is when a massive star that has a tremendous increase in its energy output due to a catastrophic explosion of its core. • Supernovas can light up the sky for many weeks. • The core of the star becomes tremend ...
Stars
... • Is a yellow star hotter or cooler than an orange star? • Suppose you see two stars of the same apparent magnitude. If one star is actually four times as far away as the other, how much brighter would the farther star really be? ...
... • Is a yellow star hotter or cooler than an orange star? • Suppose you see two stars of the same apparent magnitude. If one star is actually four times as far away as the other, how much brighter would the farther star really be? ...
The Sun
... Each of these products carries some of the energy released from the slight reduction in total mass of the system. 4H-1 → He-4 + 2e+ + 2ν + 2γ The 2e+ (positrons) quickly annihilate with electrons, 2e+ + 2e- = 4γ. Adding in the 2γ from the He3 creation reaction, gives a net production of 6 gamma rays ...
... Each of these products carries some of the energy released from the slight reduction in total mass of the system. 4H-1 → He-4 + 2e+ + 2ν + 2γ The 2e+ (positrons) quickly annihilate with electrons, 2e+ + 2e- = 4γ. Adding in the 2γ from the He3 creation reaction, gives a net production of 6 gamma rays ...
day 1 hand out - the sun
... It provides the energy needed by plants and animals, and its gravitational pull keeps the Earth in a steady orbit. By studying the Sun, we also learn about other stars. Since the sun is so close to Earth, it is the brightest object in the sky. It is so bright, that you cannot see any other stars whi ...
... It provides the energy needed by plants and animals, and its gravitational pull keeps the Earth in a steady orbit. By studying the Sun, we also learn about other stars. Since the sun is so close to Earth, it is the brightest object in the sky. It is so bright, that you cannot see any other stars whi ...
Ch. 22 Honors Study Guide Name 1. How did Eratosthenes
... 7. Even though Copernicus was right about the Heliocentric model, the planets did not line up where he thought they should. What was wrong with Copernicus’ model? 8. Why were Tycho Brahe’s observations so important in Astronomy? 9. Why didn’t Tycho Brahe believe the Sun was the center of the Solar S ...
... 7. Even though Copernicus was right about the Heliocentric model, the planets did not line up where he thought they should. What was wrong with Copernicus’ model? 8. Why were Tycho Brahe’s observations so important in Astronomy? 9. Why didn’t Tycho Brahe believe the Sun was the center of the Solar S ...
Solar System
... The sun is the star in our solar system. At night, thousands of stars are visible. Some of these stars are brighter than others. The brightness of a star depends on its size, temperature, and distance from the Earth. A star’s magnitude is the measure of its brightness. Stars can be divided into six ...
... The sun is the star in our solar system. At night, thousands of stars are visible. Some of these stars are brighter than others. The brightness of a star depends on its size, temperature, and distance from the Earth. A star’s magnitude is the measure of its brightness. Stars can be divided into six ...
Solar System
... The sun is the star in our solar system. At night, thousands of stars are visible. Some of these stars are brighter than others. The brightness of a star depends on its size, temperature, and distance from the Earth. A star’s magnitude is the measure of its brightness. Stars can be divided into six ...
... The sun is the star in our solar system. At night, thousands of stars are visible. Some of these stars are brighter than others. The brightness of a star depends on its size, temperature, and distance from the Earth. A star’s magnitude is the measure of its brightness. Stars can be divided into six ...
Review for Astronomy Exam 1
... KEPLER’S LAWS of Planetary Motion • Law of Ellipses - The planets orbit the Sun in elliptical orbits with the Sun at one focus. • Law of Areas - A line drawn from a planet to the Sun sweeps out equal areas in equal times. ...
... KEPLER’S LAWS of Planetary Motion • Law of Ellipses - The planets orbit the Sun in elliptical orbits with the Sun at one focus. • Law of Areas - A line drawn from a planet to the Sun sweeps out equal areas in equal times. ...
H-R Diagram - SFA Physics
... stars in the night sky. Transfer the main sequence curve from Figure 1 onto Figure 2. ...
... stars in the night sky. Transfer the main sequence curve from Figure 1 onto Figure 2. ...
Lecture 24, PPT version
... • Observed ranges of luminosity, temperature, radius, and mass of stars ...
... • Observed ranges of luminosity, temperature, radius, and mass of stars ...
Unit 1: Earth History 1. Distinguish among eons
... 3. Describe the agents of erosion, examples, features associated with them, and how to prevent/limit them. 4. Understand each type of mass movement, where they are likely to occur, and what effect they can ...
... 3. Describe the agents of erosion, examples, features associated with them, and how to prevent/limit them. 4. Understand each type of mass movement, where they are likely to occur, and what effect they can ...
red shift summary sheet
... bang which has scientific proof! This theory involves a great explosion where everything in the known universe was formed. All the energy and matter found today in the universe expanded from tiny point and formed the galaxies, stars, planets, asteroids, gases, dust and energy. Even today the univers ...
... bang which has scientific proof! This theory involves a great explosion where everything in the known universe was formed. All the energy and matter found today in the universe expanded from tiny point and formed the galaxies, stars, planets, asteroids, gases, dust and energy. Even today the univers ...
The Sun, Stars, and Beyond
... • When a supermassive star (>10 Msol) runs out of fuel and tries to explode, gravity thwarts the kaboom and squeezes the star into zero volume. • This has the effect of bending the space around it, like taking the floor and wrapping it up in a ball around you. • Called Black because no light escapes ...
... • When a supermassive star (>10 Msol) runs out of fuel and tries to explode, gravity thwarts the kaboom and squeezes the star into zero volume. • This has the effect of bending the space around it, like taking the floor and wrapping it up in a ball around you. • Called Black because no light escapes ...
Star clusters and constellations
... Star clusters are groups of stars that are ‘connected’ by a significant gravitational force ands move around tougher as the galaxy rotates. The motion of the Sun through the galaxy does not affect the appearance of a star cluster from Earth over a long period of time. Examples of star clusters are t ...
... Star clusters are groups of stars that are ‘connected’ by a significant gravitational force ands move around tougher as the galaxy rotates. The motion of the Sun through the galaxy does not affect the appearance of a star cluster from Earth over a long period of time. Examples of star clusters are t ...
chap17_f04_probs
... Given a star with an apparent magnitude of 10.0, and an absolute magnitude of 2.5, you are asked to find the distance to the star. ANSWER: Stars appear fainter if located further away, just like any luminous object. The magnitude of a star represents its brightness, either its perceived brightness, ...
... Given a star with an apparent magnitude of 10.0, and an absolute magnitude of 2.5, you are asked to find the distance to the star. ANSWER: Stars appear fainter if located further away, just like any luminous object. The magnitude of a star represents its brightness, either its perceived brightness, ...
Gravitational Interactions
... • A person who weighs 100 pounds on the Earth's surface would weigh about 89 pounds at the top of the ladder. • The astronaut, the spaceship and everything inside it are falling towards the Earth. • They are always falling towards the Earth, but they ...
... • A person who weighs 100 pounds on the Earth's surface would weigh about 89 pounds at the top of the ladder. • The astronaut, the spaceship and everything inside it are falling towards the Earth. • They are always falling towards the Earth, but they ...
He fusion
... = 4.71 x 1030 s = 1.49 x 1013 years But a deeper understanding of astrophysics suggests that fusions at the core will die out when just over 0.0003 of its mass has been lost. ...
... = 4.71 x 1030 s = 1.49 x 1013 years But a deeper understanding of astrophysics suggests that fusions at the core will die out when just over 0.0003 of its mass has been lost. ...
Class 12 : Star formation I : The Interstellar Medium (ISM)
... A gas cloud of density ρ and temperature T collapses if its mass is above a critical amount given by… ...
... A gas cloud of density ρ and temperature T collapses if its mass is above a critical amount given by… ...
Ch 3 Sec 1 Tools of modern astronomy
... D. Brightness depends on both size and temperature 1. A cool star won’t give off much light, but if it’s huge, will appear bright to us. 2. Apparent magnitude is how bright it appears from Earth a) Depends on how close it is to Earth b) A flashlight doesn’t change, but will look much brighter to you ...
... D. Brightness depends on both size and temperature 1. A cool star won’t give off much light, but if it’s huge, will appear bright to us. 2. Apparent magnitude is how bright it appears from Earth a) Depends on how close it is to Earth b) A flashlight doesn’t change, but will look much brighter to you ...
Semester Review Answers - School District of La Crosse
... 22. A planet which has a magnetic field may imply what type of core?Molten metallic 23. The scientist who first choose to think of the solar system as heliocentric was: Aristarchus 24. Galileo was put under pressure from the church because: all the answers are correct 25. The point where all space a ...
... 22. A planet which has a magnetic field may imply what type of core?Molten metallic 23. The scientist who first choose to think of the solar system as heliocentric was: Aristarchus 24. Galileo was put under pressure from the church because: all the answers are correct 25. The point where all space a ...
Picture Match Words Giant Planet Phase Habitable Zone Fluctuate
... A ___________________is established by different types of stars; this zone allows acceptable temperatures for liquid water to exist. ...
... A ___________________is established by different types of stars; this zone allows acceptable temperatures for liquid water to exist. ...
Constellations
... How stars would appear if they were all the same distance from earth. All stars place 32.6 LY from the sun Our sun abs. Mag = 4.8 Negative is brighter ...
... How stars would appear if they were all the same distance from earth. All stars place 32.6 LY from the sun Our sun abs. Mag = 4.8 Negative is brighter ...
The Electromagnetic Spectrum
... • Stars produce continuous spectra, with no gaps between the colors. • Thin gases emit emission spectra. • When light passes through cool gas, colors are removed, forming an absorption spectrum. ...
... • Stars produce continuous spectra, with no gaps between the colors. • Thin gases emit emission spectra. • When light passes through cool gas, colors are removed, forming an absorption spectrum. ...
IK Pegasi
![](https://commons.wikimedia.org/wiki/Special:FilePath/Location_of_IK_Pegasi.png?width=300)
IK Pegasi (or HR 8210) is a binary star system in the constellation Pegasus. It is just luminous enough to be seen with the unaided eye, at a distance of about 150 light years from the Solar System.The primary (IK Pegasi A) is an A-type main-sequence star that displays minor pulsations in luminosity. It is categorized as a Delta Scuti variable star and it has a periodic cycle of luminosity variation that repeats itself about 22.9 times per day. Its companion (IK Pegasi B) is a massive white dwarf—a star that has evolved past the main sequence and is no longer generating energy through nuclear fusion. They orbit each other every 21.7 days with an average separation of about 31 million kilometres, or 19 million miles, or 0.21 astronomical units (AU). This is smaller than the orbit of Mercury around the Sun.IK Pegasi B is the nearest known supernova progenitor candidate. When the primary begins to evolve into a red giant, it is expected to grow to a radius where the white dwarf can accrete matter from the expanded gaseous envelope. When the white dwarf approaches the Chandrasekhar limit of 1.44 solar masses (M☉), it may explode as a Type Ia supernova.