Astronomy Jeopardy Astronomy jeopardy
... Star Dust - 500 Points When massively large stars die with a great explosion and such great a force of gravity that anything falling into it, including e-m waves becomes trapped and light cannot ...
... Star Dust - 500 Points When massively large stars die with a great explosion and such great a force of gravity that anything falling into it, including e-m waves becomes trapped and light cannot ...
The Temperatures of Stars
... Understanding Stellar Colors First hired by Pickering to be his housekeeper, Williamina Fleming was later made an assistant and eventually supervisor for the other women. Once the Draper survey began, Fleming was given the huge task of photographing, cataloging, and analyzing about 10,000 stars ove ...
... Understanding Stellar Colors First hired by Pickering to be his housekeeper, Williamina Fleming was later made an assistant and eventually supervisor for the other women. Once the Draper survey began, Fleming was given the huge task of photographing, cataloging, and analyzing about 10,000 stars ove ...
Our Universe
... becomes infinitely strong. Thus, an object can exist there for only an instant as it plunges inward at the speed of light. ...
... becomes infinitely strong. Thus, an object can exist there for only an instant as it plunges inward at the speed of light. ...
star
... closer to Earth than other stars. In fact, the sun is really a star of only average brightness. Apparent brightness-‐ the brightness of a star as it appears from Earth. ...
... closer to Earth than other stars. In fact, the sun is really a star of only average brightness. Apparent brightness-‐ the brightness of a star as it appears from Earth. ...
Galaxy Classification - VCI
... he began to classify them into different types. The shape and color of a galaxy tell us a lot about the events that have happened within that galaxy. ...
... he began to classify them into different types. The shape and color of a galaxy tell us a lot about the events that have happened within that galaxy. ...
Characteristics of stars powerpoint
... What is a spectrograph? •Breaks up the light from an object into a spectrum •A spectrograph is a photograph of the resulting spectrum ...
... What is a spectrograph? •Breaks up the light from an object into a spectrum •A spectrograph is a photograph of the resulting spectrum ...
smallest exoplanet - Forsyth Astronomical Society
... Astronomers plan to observe a rare cosmic cradle for the universe's largest stars, - baby bruisers that grow up to have 50 times the Sun's mass. The Carina cloud is also unusual in its rapid pace of collapse and the amount of dust and gas, an amount so large it eclipsed the large stars that had alre ...
... Astronomers plan to observe a rare cosmic cradle for the universe's largest stars, - baby bruisers that grow up to have 50 times the Sun's mass. The Carina cloud is also unusual in its rapid pace of collapse and the amount of dust and gas, an amount so large it eclipsed the large stars that had alre ...
PS 224, Fall 2014 HW 4
... a: Dark cloud: Large molecular clouds develop dense regions that appear darker than surrounding regions. This can be precipitated by external pressure or forces or random fluctuations present in the cloud. These regions are very large, typically around 200,000 AU. b: Gravitational collapse: When the ...
... a: Dark cloud: Large molecular clouds develop dense regions that appear darker than surrounding regions. This can be precipitated by external pressure or forces or random fluctuations present in the cloud. These regions are very large, typically around 200,000 AU. b: Gravitational collapse: When the ...
Slide 1
... A star is a massive ball of superheated gases that radiates heat and light. Characteristics used to describe stars include: • size • colour • temperature • and density Copyright © 2010 McGraw-Hill Ryerson Ltd. ...
... A star is a massive ball of superheated gases that radiates heat and light. Characteristics used to describe stars include: • size • colour • temperature • and density Copyright © 2010 McGraw-Hill Ryerson Ltd. ...
Life Cycle of Stars
... Sheetthat not even – An object so massive and dense light can escape its gravity – The end result from a supernova of a star that has a mass greater than 3x the sun ...
... Sheetthat not even – An object so massive and dense light can escape its gravity – The end result from a supernova of a star that has a mass greater than 3x the sun ...
Basic Observations of Stars
... Note the missing colours (= “absorption lines”). Atoms selectively absorb certain wavelengths [colours] of light, and each atom has its own ‘fingerprint.’ Rather obviously, an absorption feature can only appear if there are atoms of the element producing it in the outer parts of the star. This is ho ...
... Note the missing colours (= “absorption lines”). Atoms selectively absorb certain wavelengths [colours] of light, and each atom has its own ‘fingerprint.’ Rather obviously, an absorption feature can only appear if there are atoms of the element producing it in the outer parts of the star. This is ho ...
Part B
... Neutron star : a supernova remnant. Mass about 1 solar mass, with radius of about 15 to 30 km. Neutron stars have overall densities of 1017 kg/m3. During neutron star formation angular momentum and magnetic flux are conserved. Both are inversely proportional to the square of the radius, giving rotat ...
... Neutron star : a supernova remnant. Mass about 1 solar mass, with radius of about 15 to 30 km. Neutron stars have overall densities of 1017 kg/m3. During neutron star formation angular momentum and magnetic flux are conserved. Both are inversely proportional to the square of the radius, giving rotat ...
Star Formation
... fusion. They continue to cool, eventually becoming compact, dark, cold fragments of unburned matter • They are known as brown dwarfs ...
... fusion. They continue to cool, eventually becoming compact, dark, cold fragments of unburned matter • They are known as brown dwarfs ...
AS1001:Extra-Galactic Astronomy Stars and Gas in Galaxies
... • Stars are born from gas in high-density regions. • Compressing gas (e.g. in collisions, or spiral arms) triggers gravitational collapse to form stars. – Ellipticals: very little gas ...
... • Stars are born from gas in high-density regions. • Compressing gas (e.g. in collisions, or spiral arms) triggers gravitational collapse to form stars. – Ellipticals: very little gas ...
The Future Sun
... b. Most stars are one the main sequence. c. Perseus has small range of luminosity d. Some clusters have giants. ...
... b. Most stars are one the main sequence. c. Perseus has small range of luminosity d. Some clusters have giants. ...
Review Packet
... Every 6 points that are correct, you will earn 1 extra credit point on the exam. Up to 18 points are available. The Life Cycle of Stars Section One – Sequencing (6 points) The stages below are not in the right order. Number the stages in the correct order. _____ The star begins to run out of fuel an ...
... Every 6 points that are correct, you will earn 1 extra credit point on the exam. Up to 18 points are available. The Life Cycle of Stars Section One – Sequencing (6 points) The stages below are not in the right order. Number the stages in the correct order. _____ The star begins to run out of fuel an ...
HW #5 Answers (Due 9/29)
... 1. List the two parameters that nuclear reaction rates depend on in the Sun and explain why the reaction rate depends on them. Nuclear reactions rate depend on temperature and density. In order to bring protons together to make Helium, the protons have to over come the repulsive force between them. ...
... 1. List the two parameters that nuclear reaction rates depend on in the Sun and explain why the reaction rate depends on them. Nuclear reactions rate depend on temperature and density. In order to bring protons together to make Helium, the protons have to over come the repulsive force between them. ...
Assignment 8 - utoledo.edu
... b. because they just cannot get hot enough for the fusion of heavier nuclei c. because all such stars explode before they can make any other elements d. because all such elements become radioactive and their nuclei break apart rather quickly e. because the cores of such stars get too hot for further ...
... b. because they just cannot get hot enough for the fusion of heavier nuclei c. because all such stars explode before they can make any other elements d. because all such elements become radioactive and their nuclei break apart rather quickly e. because the cores of such stars get too hot for further ...
Chapter20
... small enough volume that the protons and electrons are forced to combine to form neutrons. For example, a star of 0.7 solar masses would produce a neutron star that was only 10 km in radius. Their extremely small size implies that they rotate quickly, according to the conservation of angular momentu ...
... small enough volume that the protons and electrons are forced to combine to form neutrons. For example, a star of 0.7 solar masses would produce a neutron star that was only 10 km in radius. Their extremely small size implies that they rotate quickly, according to the conservation of angular momentu ...
The Death of Stars
... • Supernovae produce remnants: expanding shells of gas rich with heavy elements. • Perhaps the most famous is the “Crab Nebula” from a supernova in 1054 AD. It was so bright, Chinese, Japanese, and Arab astronomers saw it for months during the day, and could be seen for 2 years at night. • The remna ...
... • Supernovae produce remnants: expanding shells of gas rich with heavy elements. • Perhaps the most famous is the “Crab Nebula” from a supernova in 1054 AD. It was so bright, Chinese, Japanese, and Arab astronomers saw it for months during the day, and could be seen for 2 years at night. • The remna ...
E:\2012-2013\SSU\PHS 207spring 2013\3rd test 4
... and held together by gravitational attraction. An association is a group of stars that are NOT gravitational bound together but follow the same path through space. In the nuclear bulge and halo globular clusters contain 100,000 to 1 million tightly packed stars and contain some of the oldest stars. ...
... and held together by gravitational attraction. An association is a group of stars that are NOT gravitational bound together but follow the same path through space. In the nuclear bulge and halo globular clusters contain 100,000 to 1 million tightly packed stars and contain some of the oldest stars. ...
The Gas Disk Stellar halo Bulge (= bar) Disk
... • High density by interstellar medium standards • Up to 105 atoms per cm3 ...
... • High density by interstellar medium standards • Up to 105 atoms per cm3 ...
STAAR Review – Week Ten
... 27. An astronomer detects a star with a temperature of about 15,000 Kelvin (K) and a luminosity of about 1.0 solar units. Based on the Hertzsprung-Russell diagram, what type of star has the astronomer detected? a. A supergiant b. A white dwarf c. A giant d. A main sequence star 28. An astronomer det ...
... 27. An astronomer detects a star with a temperature of about 15,000 Kelvin (K) and a luminosity of about 1.0 solar units. Based on the Hertzsprung-Russell diagram, what type of star has the astronomer detected? a. A supergiant b. A white dwarf c. A giant d. A main sequence star 28. An astronomer det ...
Classifying Stars (pages 753–754) Key Concept: Characteristics
... from Earth does not look very bright. But the sun looks very bright because it is so close to Earth. ...
... from Earth does not look very bright. But the sun looks very bright because it is so close to Earth. ...
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.