MT 2 Answers Version D
... 31. Examine the figure below. On a typical H-R diagram, what are the stars that have the hottest surface temperatures and the smallest radii? ...
... 31. Examine the figure below. On a typical H-R diagram, what are the stars that have the hottest surface temperatures and the smallest radii? ...
Slide 1
... IIIa. How can we measure the properties of RS CVn stars? • Need high resolution spectroscopy in order to see spectral features from both stars in the binary. • Need to observe wavelengths that are sensitive to the magnetically active region between the chromosphere and the corona (i.e., the transit ...
... IIIa. How can we measure the properties of RS CVn stars? • Need high resolution spectroscopy in order to see spectral features from both stars in the binary. • Need to observe wavelengths that are sensitive to the magnetically active region between the chromosphere and the corona (i.e., the transit ...
P10263v1.2 Lab 8 Text
... their distances. Even after other galaxies were discovered outside of our own, we still had trouble seeing objects outside our own galaxy in the direction of the disk. Less than 10 years ago, a huge, faint companion spiral galaxy to our own, Malin 2. It hadn’t been seen previously due to the fact th ...
... their distances. Even after other galaxies were discovered outside of our own, we still had trouble seeing objects outside our own galaxy in the direction of the disk. Less than 10 years ago, a huge, faint companion spiral galaxy to our own, Malin 2. It hadn’t been seen previously due to the fact th ...
HR Diagram Lab
... 1. What would you tell someone who thinks that all stars are very similar (be sure to discuss temperature and brightness)? 2. How does our sun compare to other stars in brightness and temperature? 3. Are the stars scattered randomly on the graph, or is there a pattern? Explain. 4. Would you expect h ...
... 1. What would you tell someone who thinks that all stars are very similar (be sure to discuss temperature and brightness)? 2. How does our sun compare to other stars in brightness and temperature? 3. Are the stars scattered randomly on the graph, or is there a pattern? Explain. 4. Would you expect h ...
Measuring Stellar Distances
... representative sample of stars? Fortunately, a theoretical argument involving stellar lifetimes serves as a consistency check. In general, star formation events in our galaxy make many more low mass stars than high mass ones. Since high mass stars have very short lifetimes, we would not expect to fi ...
... representative sample of stars? Fortunately, a theoretical argument involving stellar lifetimes serves as a consistency check. In general, star formation events in our galaxy make many more low mass stars than high mass ones. Since high mass stars have very short lifetimes, we would not expect to fi ...
Constellations and Asterisms
... the shapes of microscopes and telescopes. As you can probably infer, these sets are so drastically different in shape from each other reflecting who was looking up into the sky. The early constellations were most likely seen by the naked eye by cultures wanting to see these creatures mapped in the s ...
... the shapes of microscopes and telescopes. As you can probably infer, these sets are so drastically different in shape from each other reflecting who was looking up into the sky. The early constellations were most likely seen by the naked eye by cultures wanting to see these creatures mapped in the s ...
STARS AND CONSTELLATIONS
... d. In the constellation is a source of powerful x-rays e. An elliptical galaxy in Virgo - Libra, the balance a. Scales of Justice b. Constellation with a green star, not too many green stars known. c. Constellation is a logo for the US Justice System - Scorpio, the Scorpion a. The sting of death b. ...
... d. In the constellation is a source of powerful x-rays e. An elliptical galaxy in Virgo - Libra, the balance a. Scales of Justice b. Constellation with a green star, not too many green stars known. c. Constellation is a logo for the US Justice System - Scorpio, the Scorpion a. The sting of death b. ...
M - UC Berkeley Astronomy w
... A classic problem in astronomy in the context of the mass distribution of molecular cloud core masses. Measurements of the absolute magnitude of the stars in the solar neighborhood revealed a preponderance of large magnitudes, I.e., faint low-mass stars. This is due to the long main-sequence lifetim ...
... A classic problem in astronomy in the context of the mass distribution of molecular cloud core masses. Measurements of the absolute magnitude of the stars in the solar neighborhood revealed a preponderance of large magnitudes, I.e., faint low-mass stars. This is due to the long main-sequence lifetim ...
The Birth, Life, and Death of Stars
... Born in Ulm, Germany in 1879 and died in Princeton in 1955 Questions the basic tenets of Quantum Mechanics: God does not play dice with the Universe ... Yet, is awarded the 1921 Nobel Prize in Physics: ... for his discovery of the law of the photoelectric effect 1905 Einstein’s Miracle Year while wo ...
... Born in Ulm, Germany in 1879 and died in Princeton in 1955 Questions the basic tenets of Quantum Mechanics: God does not play dice with the Universe ... Yet, is awarded the 1921 Nobel Prize in Physics: ... for his discovery of the law of the photoelectric effect 1905 Einstein’s Miracle Year while wo ...
Globular Clusters - University of Dayton
... Globular clusters are systems of between 0.1-1 million stars, gravitationallybound into a single structure about 100 light-years across. This is a picture of a typical globular cluster (GC), NGC 104. Notice the strongly peaked distribution of stars and spherical symmetry - both indicating a stable g ...
... Globular clusters are systems of between 0.1-1 million stars, gravitationallybound into a single structure about 100 light-years across. This is a picture of a typical globular cluster (GC), NGC 104. Notice the strongly peaked distribution of stars and spherical symmetry - both indicating a stable g ...
Evolution of low
... the RGB. Now, the energy generation is much more erratic. The triple-alpha process rate scales with T30(!). AGB stars undergo `Shell flashes’. ...
... the RGB. Now, the energy generation is much more erratic. The triple-alpha process rate scales with T30(!). AGB stars undergo `Shell flashes’. ...
Chapter 28 Stars and Their Characteristics
... The most distant Galaxy Cluster is 12 billion Light-years away. ...
... The most distant Galaxy Cluster is 12 billion Light-years away. ...
EMR, Telescopes, Stars, Solar System study guide `14-15
... 9. The distance that light travels in a year is known as a _________________________. 10. The time it takes light from a star 100 light years away to reach Earth is ___________________. 11. Parallax is used to find the ____________________________ to nearby stars. 12. Astronomers use a _____________ ...
... 9. The distance that light travels in a year is known as a _________________________. 10. The time it takes light from a star 100 light years away to reach Earth is ___________________. 11. Parallax is used to find the ____________________________ to nearby stars. 12. Astronomers use a _____________ ...
Document
... A constellation is a group of stars that, when seen from Earth, form a pattern The stars in the sky are divided into 88 constellations (12 based on zodiac signs) The brightest constellation is Crux (the Southern Cross) The constellation with the greatest number of visible stars in it is Centaur ...
... A constellation is a group of stars that, when seen from Earth, form a pattern The stars in the sky are divided into 88 constellations (12 based on zodiac signs) The brightest constellation is Crux (the Southern Cross) The constellation with the greatest number of visible stars in it is Centaur ...
STUDY GUIDE:
... Star clusters can be open (also called galactic) or globular. There are fewer and more sparse stars found in an open cluster than globular one. Stars in an open cluster are usually about the same age. One of the more famous visible open clusters is the Pleiades (also known as the Seven Sisters) in T ...
... Star clusters can be open (also called galactic) or globular. There are fewer and more sparse stars found in an open cluster than globular one. Stars in an open cluster are usually about the same age. One of the more famous visible open clusters is the Pleiades (also known as the Seven Sisters) in T ...
Universe Now - Course Pages of Physics Department
... • A white dwarf is very hot after formation but since it does not produce energy by fusion, it will gradually radiate away its thermal energy and cool down. When the heat is radiated away, white dwarf becomes a black dwarf (none yet exist – the timescale for formation is very long). – The coolest wh ...
... • A white dwarf is very hot after formation but since it does not produce energy by fusion, it will gradually radiate away its thermal energy and cool down. When the heat is radiated away, white dwarf becomes a black dwarf (none yet exist – the timescale for formation is very long). – The coolest wh ...
Sample Stellar Evolution TEST QUESTIONS
... 11. The Orion region contains young main sequence stars and an emission nebula. 12. The thermal motions of the atoms in a gas cloud can make it collapse to form a protostar. 13. The pressure of a gas generally depends on its temperature and its density. 14. Stars swell into giants when hydrogen is e ...
... 11. The Orion region contains young main sequence stars and an emission nebula. 12. The thermal motions of the atoms in a gas cloud can make it collapse to form a protostar. 13. The pressure of a gas generally depends on its temperature and its density. 14. Stars swell into giants when hydrogen is e ...
Part A
... Different parts of the electromagnetic spectrum have different wavelengths and different energies. You can see only a small part of the energy in these wavelengths. ...
... Different parts of the electromagnetic spectrum have different wavelengths and different energies. You can see only a small part of the energy in these wavelengths. ...
Lecture 5
... The Greek philosophers Anaxagoras (ca. 500–428 BC) and Democritus (450– 370 B.C.) proposed that the bright band on the night sky known as the Milky Way might consist of distant stars. Aristotle (384-322 B.C.), however, believed the Milky Way to be caused by "the ignition of the fiery exhalation of s ...
... The Greek philosophers Anaxagoras (ca. 500–428 BC) and Democritus (450– 370 B.C.) proposed that the bright band on the night sky known as the Milky Way might consist of distant stars. Aristotle (384-322 B.C.), however, believed the Milky Way to be caused by "the ignition of the fiery exhalation of s ...
d - Haus der Astronomie
... By averaging, we find the approximate distance to the Andromeda Galaxy: (2,52 ± 0,14) 10 lyly ...
... By averaging, we find the approximate distance to the Andromeda Galaxy: (2,52 ± 0,14) 10 lyly ...
Slide 1
... The Greek philosophers Anaxagoras (ca. 500–428 BC) and Democritus (450– 370 B.C.) proposed that the bright band on the night sky known as the Milky Way might consist of distant stars. Aristotle (384-322 B.C.), however, believed the Milky Way to be caused by "the ignition of the fiery exhalation of s ...
... The Greek philosophers Anaxagoras (ca. 500–428 BC) and Democritus (450– 370 B.C.) proposed that the bright band on the night sky known as the Milky Way might consist of distant stars. Aristotle (384-322 B.C.), however, believed the Milky Way to be caused by "the ignition of the fiery exhalation of s ...
1 - Stellar Life Cycle
... out •No new heat is made and gravity will take over and the center of the star will shrink. •This makes the very outside of the star “float up” and cool down, making the star look much bigger and redder - a Red Giant star. ...
... out •No new heat is made and gravity will take over and the center of the star will shrink. •This makes the very outside of the star “float up” and cool down, making the star look much bigger and redder - a Red Giant star. ...
Notes
... Degenerate carbon-oxygen core, He- and H-burning shells, thin H layer, shrouded in dust from superwind (proto-planetary nebula) Mass loss rate decreases but wind speed increases Hydrogen layer thins further from mass loss and He burning shell Star evolves at constant luminosity (~104LSun), shrinking ...
... Degenerate carbon-oxygen core, He- and H-burning shells, thin H layer, shrouded in dust from superwind (proto-planetary nebula) Mass loss rate decreases but wind speed increases Hydrogen layer thins further from mass loss and He burning shell Star evolves at constant luminosity (~104LSun), shrinking ...
University of Groningen Colliding winds in Wolf-Rayet
... associated with giant molecular clouds, where they are thought to be born. In the early stages after their birth, massive stars will heat the dust and excite the gas of the optically thick surrounding cloud and the cloud will radiate at the IR and radio wavelengths. Soon the strong radiation of the ...
... associated with giant molecular clouds, where they are thought to be born. In the early stages after their birth, massive stars will heat the dust and excite the gas of the optically thick surrounding cloud and the cloud will radiate at the IR and radio wavelengths. Soon the strong radiation of the ...
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.