Properties of Stars
... • Binary Stars – pairs of stars, pulled together by gravity, that orbit each other • Binary stars are used to determine the star property most difficult to calculate – its mass • The mass of a body can be calculated if it is attached by gravity to a partner ...
... • Binary Stars – pairs of stars, pulled together by gravity, that orbit each other • Binary stars are used to determine the star property most difficult to calculate – its mass • The mass of a body can be calculated if it is attached by gravity to a partner ...
Discussion Activity #11a
... A. It is because the cores of low-mass stars never get hot enough for carbon fusion. B. It is because carbon fusion can occur only in the stars known as carbon stars. C. It is because the cores of low-mass stars never contain significant amounts of carbon. D. It is because only high-mass stars do fu ...
... A. It is because the cores of low-mass stars never get hot enough for carbon fusion. B. It is because carbon fusion can occur only in the stars known as carbon stars. C. It is because the cores of low-mass stars never contain significant amounts of carbon. D. It is because only high-mass stars do fu ...
Life Cycle of Star Flipbook
... 6. What is going to happen to our Sun’s magnitude and temperature when it goes to its next stage? 7. What is the final stage of our Sun’s life? 8. What will happen to our Sun’s magnitude and temperature when it goes to its final stage? 9. What determines which star will go supernova? 10. What two fo ...
... 6. What is going to happen to our Sun’s magnitude and temperature when it goes to its next stage? 7. What is the final stage of our Sun’s life? 8. What will happen to our Sun’s magnitude and temperature when it goes to its final stage? 9. What determines which star will go supernova? 10. What two fo ...
Stars and Galaxies – Notes
... Many stars are found in multiple-star systems. Alpha Centauri is in a multiple star system. It is made up of three stars called a triple star system. Over half of the stars in the sky have at least one companion star. Most of these stars are doublestar systems in which two stars revolve around each ...
... Many stars are found in multiple-star systems. Alpha Centauri is in a multiple star system. It is made up of three stars called a triple star system. Over half of the stars in the sky have at least one companion star. Most of these stars are doublestar systems in which two stars revolve around each ...
Lecture 10 February 13
... orbiting, but we can see them both Astrometric Binary proper motion wiggles to show orbit Spectrum Binary spectra of two stars of different type Spectroscopic Binary Doppler shift shows orbital motion Eclipsing Binary light varies Half of all stars are in binaries…. Binary stars are formed at birth. ...
... orbiting, but we can see them both Astrometric Binary proper motion wiggles to show orbit Spectrum Binary spectra of two stars of different type Spectroscopic Binary Doppler shift shows orbital motion Eclipsing Binary light varies Half of all stars are in binaries…. Binary stars are formed at birth. ...
Lecture4
... It has 100 times more fuel but uses it up a million times faster. It therefore lives only about 10-4 times as long as the Sun. Since the Sun lives 10 billion years, a 100 solar mass star lives only about one million years. ...
... It has 100 times more fuel but uses it up a million times faster. It therefore lives only about 10-4 times as long as the Sun. Since the Sun lives 10 billion years, a 100 solar mass star lives only about one million years. ...
PHYS 175 Fall 2014 Final Recitation Ch. 16 The Sun
... than Fe are formed when the shockwaves from a supernova event cause fusion in the stellar mass that has been ejected from the star’s outer layers. Ch. 21 Black Holes ...
... than Fe are formed when the shockwaves from a supernova event cause fusion in the stellar mass that has been ejected from the star’s outer layers. Ch. 21 Black Holes ...
The Night Sky
... A large numerous collections of stars, gas giants and planets that make up a visual universe. They are held together by each planets and stars gravity. Other Galaxies: Sunflower galaxy- A galaxy in a spiral form discovered in 1779 Whirlpool galaxy- A whirlpool like galaxy. thought to be about 14 mil ...
... A large numerous collections of stars, gas giants and planets that make up a visual universe. They are held together by each planets and stars gravity. Other Galaxies: Sunflower galaxy- A galaxy in a spiral form discovered in 1779 Whirlpool galaxy- A whirlpool like galaxy. thought to be about 14 mil ...
Stellar Evolution Slideshow
... After a star explodes, sometimes only neutrons are left (Guess where the name “Neutron Stars” came from?) Also called Pulsars because they emit radio waves with incredible regularity. Appear to be rapidly rotating neutron star ...
... After a star explodes, sometimes only neutrons are left (Guess where the name “Neutron Stars” came from?) Also called Pulsars because they emit radio waves with incredible regularity. Appear to be rapidly rotating neutron star ...
Study Guide 4 Part A Outline
... matter is inferred from the effect that its gravity has on stars in the outer part of the Galaxy. Those stars are orbiting faster than they would be expected to be moving if there were no dark matter. Nobody knows what the dark matter is. o A 4 million solar mass black hole may sit in the center of ...
... matter is inferred from the effect that its gravity has on stars in the outer part of the Galaxy. Those stars are orbiting faster than they would be expected to be moving if there were no dark matter. Nobody knows what the dark matter is. o A 4 million solar mass black hole may sit in the center of ...
Stars from Afar
... An HR diagram shows the two most important characteristics of stars, which are temperature and absolute magnitude (brightness) and/or luminosity. ...
... An HR diagram shows the two most important characteristics of stars, which are temperature and absolute magnitude (brightness) and/or luminosity. ...
The Galactic Super Star Cluster Westerlund 1
... times the mass of Orion. Therefore, we would have expected diffuse emission with L x = 3x10 35 erg s-1, which is five times more flux than we observe. We suggest that the IMF is nonstandard, as is often claimed for young, massive star clusters. ...
... times the mass of Orion. Therefore, we would have expected diffuse emission with L x = 3x10 35 erg s-1, which is five times more flux than we observe. We suggest that the IMF is nonstandard, as is often claimed for young, massive star clusters. ...
answers
... This class is about the characteristics of stars and more importantly, how we know what we know. 1) The Sun looks much brighter than all the other stars because it is so close. It seems to have a fairly average luminosity. Other stars have luminosities that are up to a million times greater and down ...
... This class is about the characteristics of stars and more importantly, how we know what we know. 1) The Sun looks much brighter than all the other stars because it is so close. It seems to have a fairly average luminosity. Other stars have luminosities that are up to a million times greater and down ...
Milky Way
... the sky, proving they are (usually) NOT from our galaxy • Afterglows (optical) were seen from some GRBs. This allowed the host galaxies to be identified and distances to be measured. • The luminosities of these things are HUGE: 1052 ergs/s. Equivalent to vaporizing a star into pure energy in a matte ...
... the sky, proving they are (usually) NOT from our galaxy • Afterglows (optical) were seen from some GRBs. This allowed the host galaxies to be identified and distances to be measured. • The luminosities of these things are HUGE: 1052 ergs/s. Equivalent to vaporizing a star into pure energy in a matte ...
Unit 11 Vocabulary
... known to exist in the Universe. They can form from the gravitational collapse of a massive star after a supernova. 9. black dwarf star - A black dwarf is created when a white dwarf star becomes too cool and can no longer create large amounts of heat and light. The star will dim and become black. We ...
... known to exist in the Universe. They can form from the gravitational collapse of a massive star after a supernova. 9. black dwarf star - A black dwarf is created when a white dwarf star becomes too cool and can no longer create large amounts of heat and light. The star will dim and become black. We ...
The distance that light travels in a year is 9.5 trillion km. The
... from closest to the Earth to farthest away: Sun, Andromeda Galaxy, Constellation, Neptune ...
... from closest to the Earth to farthest away: Sun, Andromeda Galaxy, Constellation, Neptune ...
Compare the following sets of stars using the words: BRIGHTER or
... diagram? The mass of the gas cloud (nebula) 23. Name the forces involved in the following processes: A. Gas/dust from a stellar nursery come together to form stars: Gravity B. Stars are made of gas, but keep a size/shape (equilibrium): Gravity (inward) and Gas Pressure (outward) 24. Put the followin ...
... diagram? The mass of the gas cloud (nebula) 23. Name the forces involved in the following processes: A. Gas/dust from a stellar nursery come together to form stars: Gravity B. Stars are made of gas, but keep a size/shape (equilibrium): Gravity (inward) and Gas Pressure (outward) 24. Put the followin ...
presentation source
... • Unstable, collapses in <1s. Bounce off rigid core detonates star - Supernova! • Shines as brightly as galaxy for a few days! GENS4001 1999-X1 ...
... • Unstable, collapses in <1s. Bounce off rigid core detonates star - Supernova! • Shines as brightly as galaxy for a few days! GENS4001 1999-X1 ...
1 Ay 124 Winter 2014 – HOMEWORK #1
... Problem 1. Observing Distant Solar-type Stars Assume for the time being that the Galaxy has no dust, and that we are observing along a line of sight at b = 0 deg and l = 180 deg. We are interested in observing the most distant solar-type stars (MV ' +5.1) possible, but our apparent magnitude limit f ...
... Problem 1. Observing Distant Solar-type Stars Assume for the time being that the Galaxy has no dust, and that we are observing along a line of sight at b = 0 deg and l = 180 deg. We are interested in observing the most distant solar-type stars (MV ' +5.1) possible, but our apparent magnitude limit f ...
Characteristics of Stars
... 2. What is an astronomical unit? How far is it in km? How far is it in miles? What is a light year? How far is it in km? How far it in miles (1 mile = 0.66 km)? 3. What is parallax? What do astronomers measure by using parallax? What is the greatest distance that astronomers can use to measure the d ...
... 2. What is an astronomical unit? How far is it in km? How far is it in miles? What is a light year? How far is it in km? How far it in miles (1 mile = 0.66 km)? 3. What is parallax? What do astronomers measure by using parallax? What is the greatest distance that astronomers can use to measure the d ...
main sequence star
... after being red giants. • The outer gases are lost, which allows us to see the core of the star. The white dwarf is very dense and hot. The emit (release) less light than they did when they were stars. • As these white dwarfs cool they become fainter. • When there is no more energy being emitted (re ...
... after being red giants. • The outer gases are lost, which allows us to see the core of the star. The white dwarf is very dense and hot. The emit (release) less light than they did when they were stars. • As these white dwarfs cool they become fainter. • When there is no more energy being emitted (re ...
Galaxies and the Big Bang Theory
... A _______________ _________________ is a device used to detect long radio waves from objects in space. A ___________ is a huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity The three different types of galaxies that exist in our universe are: ...
... A _______________ _________________ is a device used to detect long radio waves from objects in space. A ___________ is a huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity The three different types of galaxies that exist in our universe are: ...
Option: Astrophysics Objects in the Universe: Asteroid: a small rocky
... o Stellar cluster: group of stars held together by gravitation in the same region of space, created roughly at the same time from the same nebulae o Open Cluster: Up to several hundred stars that are 10 billion years old or less. May still contain gas and dust o Globular Cluster: Cluster of many old ...
... o Stellar cluster: group of stars held together by gravitation in the same region of space, created roughly at the same time from the same nebulae o Open Cluster: Up to several hundred stars that are 10 billion years old or less. May still contain gas and dust o Globular Cluster: Cluster of many old ...
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.