Galaxies - C. Levesque
... • The Milky Way is a spiral galaxy • Our solar system is located on the Orion Arm of the Milky Way Galaxy ...
... • The Milky Way is a spiral galaxy • Our solar system is located on the Orion Arm of the Milky Way Galaxy ...
Chapter 1 Starts and Galaxies
... Corona- outermost layer of the sun’s atmosphere Chromosphere- middle layer of the sun’s atmosphere Photosphere- innermost layer of the sun’s atmosphere Core- center of the sun Prominence- violent storm on the sun that can be seen from Earth as a huge bright arch or loop of hot gas Solar flare- storm ...
... Corona- outermost layer of the sun’s atmosphere Chromosphere- middle layer of the sun’s atmosphere Photosphere- innermost layer of the sun’s atmosphere Core- center of the sun Prominence- violent storm on the sun that can be seen from Earth as a huge bright arch or loop of hot gas Solar flare- storm ...
Lecture 31: The Properties of Stars
... Luminosity, the total energy output expressed in Watts or Solar Luminosities, depends on the radius and temperature. The absorption spectra of stars form a distinct sequence with stellar temperature, giving us a way to classify stars. Spectral Classes of Stars: O B A F G K M L T The Hertzsprung-Russ ...
... Luminosity, the total energy output expressed in Watts or Solar Luminosities, depends on the radius and temperature. The absorption spectra of stars form a distinct sequence with stellar temperature, giving us a way to classify stars. Spectral Classes of Stars: O B A F G K M L T The Hertzsprung-Russ ...
A-36_SF
... How do we learn about star formation? What can you see with your very own eyes or through our very own telescope? ...
... How do we learn about star formation? What can you see with your very own eyes or through our very own telescope? ...
ppt - Serbian Virtual Observatory - astronomical observatory belgrade
... For all eleven double stars there exist measurements (sufficient number) on the basis of which one can obtain the apparent orbit. Nevertheless, we prefer a combined approach using both apparent orbits and estimation. The first step in the estimation is in fact testing the hypothesis that both stars ...
... For all eleven double stars there exist measurements (sufficient number) on the basis of which one can obtain the apparent orbit. Nevertheless, we prefer a combined approach using both apparent orbits and estimation. The first step in the estimation is in fact testing the hypothesis that both stars ...
Astronomy Review
... 45. True or False All stars eventually run out of fuel and collapse due to gravity. ...
... 45. True or False All stars eventually run out of fuel and collapse due to gravity. ...
Astronomy Chapter 13 Name
... K. The law stating that the apparent brightness of a body decreases inversely as the square of its distance L. A star whose luminosity changes in time M. The region in the H-R diagram in which most stars are located N. A dense star whose radius is approximately equal to Earth’s but whose mass is com ...
... K. The law stating that the apparent brightness of a body decreases inversely as the square of its distance L. A star whose luminosity changes in time M. The region in the H-R diagram in which most stars are located N. A dense star whose radius is approximately equal to Earth’s but whose mass is com ...
Galaxy
... star it is called an eclipsing star Astronomers know there are actually 2 stars by looking at the effects of gravity Our solar system is not the only solar system with planets revolving around a star In 2000, astronomers discovered a solar system about 10.5 light-years away with planets simila ...
... star it is called an eclipsing star Astronomers know there are actually 2 stars by looking at the effects of gravity Our solar system is not the only solar system with planets revolving around a star In 2000, astronomers discovered a solar system about 10.5 light-years away with planets simila ...
Integrative Studies 410 Our Place in the Universe
... Supernovae – Death of massive Stars • As the core collapses, it overshoots and “bounces” • A shock wave travels through the star and blows off the outer layers, including the heavy elements – a supernova • A million times brighter than a nova!! • The actual explosion takes less than a second ...
... Supernovae – Death of massive Stars • As the core collapses, it overshoots and “bounces” • A shock wave travels through the star and blows off the outer layers, including the heavy elements – a supernova • A million times brighter than a nova!! • The actual explosion takes less than a second ...
STUDY QUESTIONS #10 The MILKY WAY GALAXY diameter face
... 9. Using the rotation curve above, astronomers have calculated a mass for the whole Galaxy, out to about 50,000 light-year radius where there are no more stars, to be about 2 × 1011 M , yet by measuring light at all wavelengths, they only measure one sixth of that mass (3 × 1010 M ). Using the orbit ...
... 9. Using the rotation curve above, astronomers have calculated a mass for the whole Galaxy, out to about 50,000 light-year radius where there are no more stars, to be about 2 × 1011 M , yet by measuring light at all wavelengths, they only measure one sixth of that mass (3 × 1010 M ). Using the orbit ...
General Introduction 1. Luminosity, Flux and Magnitude The
... hundredths of a percent. The difference in galactic distributions, abundances and motions of the two types of clusters has resulted in the identification of two major populations of stars: Type I, stars formed recently like the Sun, and Type II, stars formed when the Galaxy was formed or even before ...
... hundredths of a percent. The difference in galactic distributions, abundances and motions of the two types of clusters has resulted in the identification of two major populations of stars: Type I, stars formed recently like the Sun, and Type II, stars formed when the Galaxy was formed or even before ...
Chapter 12
... called a planetary nebula. As it cools, it becomes a white dwarf which will eventually run out of fuel and die becoming a black dwarf. -Red super giants may suddenly explode which is called a supernova. After this explosion, leftover star material may form a neutron star. After a large mass star exp ...
... called a planetary nebula. As it cools, it becomes a white dwarf which will eventually run out of fuel and die becoming a black dwarf. -Red super giants may suddenly explode which is called a supernova. After this explosion, leftover star material may form a neutron star. After a large mass star exp ...
Life Cycle of Stars
... – Very large, massive stars burn their fuel much faster than smaller stars – Their 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 ...
... – Very large, massive stars burn their fuel much faster than smaller stars – Their 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 ...
So why are more massive stars more luminous?
... • Stars form in clouds of cold gas, collapsing under gravitational instability • Protostars are heated by gravitational collapse and often form disks and jets around them • H-R diagrams can be used to age-date star clusters. • Stars on the main sequence burn hydrogen in the core ...
... • Stars form in clouds of cold gas, collapsing under gravitational instability • Protostars are heated by gravitational collapse and often form disks and jets around them • H-R diagrams can be used to age-date star clusters. • Stars on the main sequence burn hydrogen in the core ...
ASTR100 Homework #5 Solutions Chapter 11 #29, 31 Due
... quantum limit, they combine with protons, to form neutrons. Within seconds the core, with a mass comparable to our sun, is collapsed into a ball of neutrons the size of only a few kilometers. The collapse stops at this point because now the neutrons are supported by their own form of degeneracy pres ...
... quantum limit, they combine with protons, to form neutrons. Within seconds the core, with a mass comparable to our sun, is collapsed into a ball of neutrons the size of only a few kilometers. The collapse stops at this point because now the neutrons are supported by their own form of degeneracy pres ...
Our Solar System
... 1. Universe- contains everything that may or may not exist in space 2. Galaxy- system of stars held together by gravity. 3 types: Spiral, Elliptical, and Irregular. Ex: Milky Way 3. Nebula= interstellar cloud of gas 4. Star- self luminous sphere of gas. Ex: sun 5. Planet- celestial object moving in ...
... 1. Universe- contains everything that may or may not exist in space 2. Galaxy- system of stars held together by gravity. 3 types: Spiral, Elliptical, and Irregular. Ex: Milky Way 3. Nebula= interstellar cloud of gas 4. Star- self luminous sphere of gas. Ex: sun 5. Planet- celestial object moving in ...
Teacher Sheet 1. What variables does the HR Diagram compare
... 14. Describe stars A, B, C, and D in terms of their brightness and temperature. Star A is red and therefore, cool. Its luminosity is 1/1000 of that of the sun; therefore, it is dim. Star B is a hot, blue star and very luminous. Both A and B are on the Main Sequence. Star C is also a hot, blue star. ...
... 14. Describe stars A, B, C, and D in terms of their brightness and temperature. Star A is red and therefore, cool. Its luminosity is 1/1000 of that of the sun; therefore, it is dim. Star B is a hot, blue star and very luminous. Both A and B are on the Main Sequence. Star C is also a hot, blue star. ...
E1 Introduction to the Universe NEW
... Know the names of the planets! They orbit in ellipses with the sun at one foci Inner planets small and rocky Outer planets large and mainly gas Outer planets are much further from the sun Asteroid belt between Mars and Jupiter ...
... Know the names of the planets! They orbit in ellipses with the sun at one foci Inner planets small and rocky Outer planets large and mainly gas Outer planets are much further from the sun Asteroid belt between Mars and Jupiter ...
Document
... • When two stars are gravitationally bound to each other, they orbit a common center of mass • Often appear bound to each other, even with a telescope ...
... • When two stars are gravitationally bound to each other, they orbit a common center of mass • Often appear bound to each other, even with a telescope ...
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.