Chapter 27.2
... brightness to increase by thousands of times for a few days. • Believed to be caused by gas (from a companion star) buildup on the white dwarf’s surface. ...
... brightness to increase by thousands of times for a few days. • Believed to be caused by gas (from a companion star) buildup on the white dwarf’s surface. ...
Microsoft Word 97
... 1. When did the Milky Way begin? _____________________________________________________ 2. Where does its name come from? ___________________________________________________ 3. What do we see when we look in the sky? _____________________________________________ 4. What does our galaxy look like from ...
... 1. When did the Milky Way begin? _____________________________________________________ 2. Where does its name come from? ___________________________________________________ 3. What do we see when we look in the sky? _____________________________________________ 4. What does our galaxy look like from ...
Chapter 28 – Stars and Galaxies
... 5 Milky Way belongs to the Local Group of about 30 galaxies B. Types of galaxies 1 Spiral – like the Milky Way 2 Elliptical – spherical to lens shaped 3 Irregular – much smaller and fainter with no shape C. Active Galaxies 1 Galaxies that emit more energy than their combined stars are said to be act ...
... 5 Milky Way belongs to the Local Group of about 30 galaxies B. Types of galaxies 1 Spiral – like the Milky Way 2 Elliptical – spherical to lens shaped 3 Irregular – much smaller and fainter with no shape C. Active Galaxies 1 Galaxies that emit more energy than their combined stars are said to be act ...
Study Guide – Midterm 3
... field. • “Precession” (gradual change in direction of major axis) of orbit of ...
... field. • “Precession” (gradual change in direction of major axis) of orbit of ...
The Origin of the Milky Way
... a huge disk, and a galactic halo surrounding both. • The diameter of the disk is 30kpc (100,000 light years). • The thickness of the disk is only 300pc (1000 light years) on average. • The total detectable mass is 200 billion solar masses. ...
... a huge disk, and a galactic halo surrounding both. • The diameter of the disk is 30kpc (100,000 light years). • The thickness of the disk is only 300pc (1000 light years) on average. • The total detectable mass is 200 billion solar masses. ...
100 X size of Sun - East Penn School District
... • In the magnitude scale, lower numbers are associated with brighter stars. • Star A has an apparent magnitude = 5.4 and star B has an apparent magnitude = 2.4. Which star is brighter? • We can't actually move stars around, but we can calculate how bright a star would be if placed at the agreed-upon ...
... • In the magnitude scale, lower numbers are associated with brighter stars. • Star A has an apparent magnitude = 5.4 and star B has an apparent magnitude = 2.4. Which star is brighter? • We can't actually move stars around, but we can calculate how bright a star would be if placed at the agreed-upon ...
Homework #9 - Solutions - Department of Physics and Astronomy
... in the Pleiades star cluster The Pleiades star cluster is a young open star cluster located in the spiral arms, thus we would expect population I stars. d) in intergalactic space (beyond the halo) We would expect to see only old extreme population II stars (and possibly population III stars which ar ...
... in the Pleiades star cluster The Pleiades star cluster is a young open star cluster located in the spiral arms, thus we would expect population I stars. d) in intergalactic space (beyond the halo) We would expect to see only old extreme population II stars (and possibly population III stars which ar ...
Chapter 28 – Stars and Galaxies
... outer layers will get blown away and only an earth-sized fiery hot carbon-oxygen core ...
... outer layers will get blown away and only an earth-sized fiery hot carbon-oxygen core ...
Topic E: Astrophysics
... laws are not required.) Students should also know the names of the planets, their approximate comparative sizes and comparative distances from the Sun, the nature of comets, and the nature and position of the asteroid belt. ...
... laws are not required.) Students should also know the names of the planets, their approximate comparative sizes and comparative distances from the Sun, the nature of comets, and the nature and position of the asteroid belt. ...
Lecture 13: The stars are suns
... Stars are fusion reactors like our sun, with similar physical properties. Spectroscopes, atomic theory, and especially measurements of stellar distances (1838) made it possible for astronomers to derive properties of stars and establish the Sun-stellar connection. • Physical properties of stars we w ...
... Stars are fusion reactors like our sun, with similar physical properties. Spectroscopes, atomic theory, and especially measurements of stellar distances (1838) made it possible for astronomers to derive properties of stars and establish the Sun-stellar connection. • Physical properties of stars we w ...
Starlight and What it Tells Us
... Radiation is Reflected from Some Other Source • The Sun Emits Black-Body Radiation, the Moon Does Not ...
... Radiation is Reflected from Some Other Source • The Sun Emits Black-Body Radiation, the Moon Does Not ...
7.1 Space Flight to the Stars
... 7.1 Space Flight to the Stars Humans have been studying the sky for millennia. Outer space has fascinated and continues to fascinate people all over the world. Although we have discovered much about space, it remains a mystery to humankind. ...
... 7.1 Space Flight to the Stars Humans have been studying the sky for millennia. Outer space has fascinated and continues to fascinate people all over the world. Although we have discovered much about space, it remains a mystery to humankind. ...
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 ...
Our place in the Universe
... Hubble took 11 days to look at a spot in the sky that appeared to be empty. This is what it found. ...
... Hubble took 11 days to look at a spot in the sky that appeared to be empty. This is what it found. ...
Study Guide: Use your notes and handouts to
... What is dark matter? What type of object do scientists believe it helps to hold together? ...
... What is dark matter? What type of object do scientists believe it helps to hold together? ...
SNC1PL The Life Cycle of Stars
... hydrogen fuel to helium at some point in their life. • Since small stars don’t have as much mass, they do not produce the conditions to reignite nuclear fusion. • The hot core remains and the outer layers simply drift away • When the white dwarf star cools, it looks invisible and is called a black d ...
... hydrogen fuel to helium at some point in their life. • Since small stars don’t have as much mass, they do not produce the conditions to reignite nuclear fusion. • The hot core remains and the outer layers simply drift away • When the white dwarf star cools, it looks invisible and is called a black d ...
stars and constellations
... the axis will only point at Polaris for a few hundred years, then, another star will be “North”. The ancient Egyptians could not have used Polaris as a compass. Why stars “move” ...
... the axis will only point at Polaris for a few hundred years, then, another star will be “North”. The ancient Egyptians could not have used Polaris as a compass. Why stars “move” ...
Section 25.2 Stellar Evolution
... collapsed to a very small size, believed to be near its final stage of evolution. The sun begins as a nebula, spends much of its life as a main-sequence star, and then becomes a red giant, a planetary nebula, a white dwarf, and, finally, a black dwarf. ...
... collapsed to a very small size, believed to be near its final stage of evolution. The sun begins as a nebula, spends much of its life as a main-sequence star, and then becomes a red giant, a planetary nebula, a white dwarf, and, finally, a black dwarf. ...
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.