Earth Science: Chapter 7: Stellar Evolution: Spring 2017: Student
... Same as above except the mass is great enough to solar masses form a BLACK HOLE (see below) Planetary nebula: after a red giant forms material from the star is ejected and forms what looks like a nebula. The name planetary is actually misnamed by an early astronomer in the 1700’s who thought it rese ...
... Same as above except the mass is great enough to solar masses form a BLACK HOLE (see below) Planetary nebula: after a red giant forms material from the star is ejected and forms what looks like a nebula. The name planetary is actually misnamed by an early astronomer in the 1700’s who thought it rese ...
Constellations
... 3. Astronomers recognize the Orion Nebula as a large celestial body. What can you infer about the Orion Nebula from its name? A. It is a star in the constellation Orion B. It plays an important role in the myth of Orion C. It is located near the constellation Orion D. It is made up of stars from the ...
... 3. Astronomers recognize the Orion Nebula as a large celestial body. What can you infer about the Orion Nebula from its name? A. It is a star in the constellation Orion B. It plays an important role in the myth of Orion C. It is located near the constellation Orion D. It is made up of stars from the ...
Stars…Giants, Supergiants, Dwarfs….
... and pressure broadening of the spectral lines tells you that one is much larger than the other, what can you say about the relative brightnesses? ...
... and pressure broadening of the spectral lines tells you that one is much larger than the other, what can you say about the relative brightnesses? ...
Lecture 11 - University of Washington
... • Why there is an age spread of ∼ 3 Gyr among globular clusters (GCs)? We would expect < 1 Gyr spread (free-fall time). Some important questions that are left without robust answers: • Why GCs become more metal-poor with the distance from the center? • Detailed calculations of chemical enrichment pr ...
... • Why there is an age spread of ∼ 3 Gyr among globular clusters (GCs)? We would expect < 1 Gyr spread (free-fall time). Some important questions that are left without robust answers: • Why GCs become more metal-poor with the distance from the center? • Detailed calculations of chemical enrichment pr ...
Characteristics of stars
... • Many stars are about the size of the sun, which is a medium sized star. • White dwarfs are about the size of Earth. • Neutron stars are about 20KM (smallest) • Giant stars and super giant stars. If our sun were a super giant star it would fill our solar system as far out as Jupiter. ...
... • Many stars are about the size of the sun, which is a medium sized star. • White dwarfs are about the size of Earth. • Neutron stars are about 20KM (smallest) • Giant stars and super giant stars. If our sun were a super giant star it would fill our solar system as far out as Jupiter. ...
Lesson 3 Power Notes Outline
... Energy is transferred to a thin shell of hydrogen surrounding the core, where hydrogen fusion continues and the shell expands. ...
... Energy is transferred to a thin shell of hydrogen surrounding the core, where hydrogen fusion continues and the shell expands. ...
The eleventh annual AST poster session - Home
... 3. Devin Kochanasz, North Seattle Community College Globular Clusters & the Oldest Stars in the Universe The size of our galaxy is commonly estimated by astronomers by a variety of methods. However, the discovery and understanding of globular clusters can tell us the true size and extent of our gala ...
... 3. Devin Kochanasz, North Seattle Community College Globular Clusters & the Oldest Stars in the Universe The size of our galaxy is commonly estimated by astronomers by a variety of methods. However, the discovery and understanding of globular clusters can tell us the true size and extent of our gala ...
STARS
... When the gas and dust start to become big enough (around the size of Jupiter) they have enough gravitational contraction and the result is the beginning of nuclear fusion. Nuclear fusion gives the star enough electromagnetic energy to begin shining and a star is born ...
... When the gas and dust start to become big enough (around the size of Jupiter) they have enough gravitational contraction and the result is the beginning of nuclear fusion. Nuclear fusion gives the star enough electromagnetic energy to begin shining and a star is born ...
White Dwarf Stars
... • These objects act as cosmic clocks and are useful for probing the dynamics of stars. ...
... • These objects act as cosmic clocks and are useful for probing the dynamics of stars. ...
Observational Astronomy - Lecture 10 Galaxies
... mass of galaxies is in the form of “Dark Matter”. This matter is not made up of ordinary matter (i.e. it is not made up of atoms). The ordinary matter (which astronomers typically call “baryonic” matter), has the following components: Stars and planets - these account for perhaps 10-50% of the ordin ...
... mass of galaxies is in the form of “Dark Matter”. This matter is not made up of ordinary matter (i.e. it is not made up of atoms). The ordinary matter (which astronomers typically call “baryonic” matter), has the following components: Stars and planets - these account for perhaps 10-50% of the ordin ...
Life of a star - bahringcarthnoians
... the perfect ingredients for giving birth to a star. The death of a light-weight star can form a nebula. The perfect example is the Helix nebula , which now is being illuminated by the dying star ...
... the perfect ingredients for giving birth to a star. The death of a light-weight star can form a nebula. The perfect example is the Helix nebula , which now is being illuminated by the dying star ...
Star Life Guided Notes
... Once _____ is in the core, outwards pressure ceases Core ________ at 1/4 the speed of light & takes about 1/10 of a second Collapse of the core to about 100 km across Outer layers “bounce” of the solid core Releases 100x the energy of our sun produces in it’s lifetime -- in 1/10 of a ...
... Once _____ is in the core, outwards pressure ceases Core ________ at 1/4 the speed of light & takes about 1/10 of a second Collapse of the core to about 100 km across Outer layers “bounce” of the solid core Releases 100x the energy of our sun produces in it’s lifetime -- in 1/10 of a ...
Scientists classify stars by
... The gravity of a passing star or the shock wave from a nearby supernova may cause the nebula to contract. 1. Matter in the gas cloud will begin to come together into a dense region called a protostar. 2. As the protostar continues to condense, it heats up. 3. Eventually, it reaches a critical mass a ...
... The gravity of a passing star or the shock wave from a nearby supernova may cause the nebula to contract. 1. Matter in the gas cloud will begin to come together into a dense region called a protostar. 2. As the protostar continues to condense, it heats up. 3. Eventually, it reaches a critical mass a ...
Neutron Stars - Otterbein University
... • If the mass of the star is sufficiently large (M > 25 MSun), even the neutron pressure cannot halt the collapse – in fact, no known force can stop it! • The star collapses to a very small size, with ultrahigh density • Nearby gravity becomes so strong that nothing – not even light – can escape! • ...
... • If the mass of the star is sufficiently large (M > 25 MSun), even the neutron pressure cannot halt the collapse – in fact, no known force can stop it! • The star collapses to a very small size, with ultrahigh density • Nearby gravity becomes so strong that nothing – not even light – can escape! • ...
Galaxies - schoolphysics
... two giant plates held face to face with a diameter of a little over 100 000 light years and made up of some hundred thousand million (1011) stars as well as great clouds of gas. (See: 11-14/Astronomy/Text/Milky Way) ...
... two giant plates held face to face with a diameter of a little over 100 000 light years and made up of some hundred thousand million (1011) stars as well as great clouds of gas. (See: 11-14/Astronomy/Text/Milky Way) ...
giant molecular clouds
... In stars slightly more massive than the sun, a more powerful energy generation mechanism than the PP chain takes over: ...
... In stars slightly more massive than the sun, a more powerful energy generation mechanism than the PP chain takes over: ...
The Formation of Stars Chapter 11 Guidepost Guidepost
... forming stars exposed by the ionizing radiation from nearby massive stars ...
... forming stars exposed by the ionizing radiation from nearby massive stars ...
Goal: To understand how stars form.
... • When you form stars you don’t form them one system at a time. • The starting Giant Molecular Cloud is often 10 to 100 light years across. • The mass of these clouds are tens of thousands of times more than the mass of our sun. • So…. ...
... • When you form stars you don’t form them one system at a time. • The starting Giant Molecular Cloud is often 10 to 100 light years across. • The mass of these clouds are tens of thousands of times more than the mass of our sun. • So…. ...
Interstellar clouds
... consists of clouds containing 90% Hydrogen, 9% Helium, and 1% dust grains. • It has an extremely low density of 1 atom per cm3, about 10 billionth the density of gas created by our best vacuums here on earth. ...
... consists of clouds containing 90% Hydrogen, 9% Helium, and 1% dust grains. • It has an extremely low density of 1 atom per cm3, about 10 billionth the density of gas created by our best vacuums here on earth. ...
Surface Environments of the Planets o+ our Solar System
... In this exercise, you will also become more familiar with the various naming systems for stars. Remember, only the brightest stars which form our constellations have been given proper names. There are thousands of stars that have either Bayer Greek letter names, and even more that have Flamsteed num ...
... In this exercise, you will also become more familiar with the various naming systems for stars. Remember, only the brightest stars which form our constellations have been given proper names. There are thousands of stars that have either Bayer Greek letter names, and even more that have Flamsteed num ...
Week 5 (10/16) – Quiz #11
... Which of the following statements comparing our Sun to another star X located at the outer edge of the Milky Way galaxy is TRUE: ...
... Which of the following statements comparing our Sun to another star X located at the outer edge of the Milky Way galaxy is TRUE: ...
Chapter 15 Test Study Sheet
... Chapter 15: The Universe Test Study Sheet California Science Standard 8.4: The structure and composition of the universe can be learned from studying stars and galaxies and their evolution. As a basis for understanding this concept: a. Students know galaxies are clusters of billions of stars and may ...
... Chapter 15: The Universe Test Study Sheet California Science Standard 8.4: The structure and composition of the universe can be learned from studying stars and galaxies and their evolution. As a basis for understanding this concept: a. Students know galaxies are clusters of billions of stars and may ...
Chapter 18 - Stars - University of New Mexico
... • With time, remaining gas loses energy by radiation, collapses, and spins up into a rotating disk. • Stars that form in the disk are younger and have coplanar orbits with primarily circular motions. • High metals, due to enriched gas from previous star formation. ...
... • With time, remaining gas loses energy by radiation, collapses, and spins up into a rotating disk. • Stars that form in the disk are younger and have coplanar orbits with primarily circular motions. • High metals, due to enriched gas from previous star formation. ...
cosmological horizon
... How do galaxies form, and how do they change over time? Why do we see so many different kinds of galaxies? Are their differences a result of ‘nature’ or ‘nurture’? How do the properties of galaxies depend on their environment? ...
... How do galaxies form, and how do they change over time? Why do we see so many different kinds of galaxies? Are their differences a result of ‘nature’ or ‘nurture’? How do the properties of galaxies depend on their environment? ...
H II region
An H II region is a large, low-density cloud of partially ionized gas in which star formation has recently taken place. The short-lived blue stars forged in these regions emit copious amounts of ultraviolet light that ionize the surrounding gas. H II regions—sometimes several hundred light-years across—are often associated with giant molecular clouds. The first known H II region was the Orion Nebula, which was discovered in 1610 by Nicolas-Claude Fabri de Peiresc.H II regions are named for the large amount of ionised atomic hydrogen they contain, referred to as H II, pronounced H-two by astronomers (an H I region being neutral atomic hydrogen, and H2 being molecular hydrogen). Such regions have extremely diverse shapes, because the distribution of the stars and gas inside them is irregular. They often appear clumpy and filamentary, sometimes showing bizarre shapes such as the Horsehead Nebula. H II regions may give birth to thousands of stars over a period of several million years. In the end, supernova explosions and strong stellar winds from the most massive stars in the resulting star cluster will disperse the gases of the H II region, leaving behind a cluster of birthed stars such as the Pleiades.H II regions can be seen to considerable distances in the universe, and the study of extragalactic H II regions is important in determining the distance and chemical composition of other galaxies. Spiral and irregular galaxies contain many H II regions, while elliptical galaxies are almost devoid of them. In the spiral galaxies, including the Milky Way, H II regions are concentrated in the spiral arms, while in the irregular galaxies they are distributed chaotically. Some galaxies contain huge H II regions, which may contain tens of thousands of stars. Examples include the 30 Doradus region in the Large Magellanic Cloud and NGC 604 in the Triangulum Galaxy.