ph507lecnote06
... SPECTRUM BINARY: 2 sets of lines but no apparent orbital motion but spectrum is clearly combined from stars of differing spectral class. ECLIPSING BINARY: - Unresolved - Stars are orbiting in plane close to line of sight giving eclipses observable as a change in the combined brightness with time (‘’ ...
... SPECTRUM BINARY: 2 sets of lines but no apparent orbital motion but spectrum is clearly combined from stars of differing spectral class. ECLIPSING BINARY: - Unresolved - Stars are orbiting in plane close to line of sight giving eclipses observable as a change in the combined brightness with time (‘’ ...
Introduction to Astronomy (high school)
... orange star in the constellation Orion, and Dubhe, the second-magnitude star at the edge of the Big Dipper's cup (Ursa Major). A few proper star names are not Arabic. One is Polaris, the second-magnitude star at the end of the handle of the Little Dipper (Ursa Minor). Polaris also carries the popula ...
... orange star in the constellation Orion, and Dubhe, the second-magnitude star at the edge of the Big Dipper's cup (Ursa Major). A few proper star names are not Arabic. One is Polaris, the second-magnitude star at the end of the handle of the Little Dipper (Ursa Minor). Polaris also carries the popula ...
Phys 214. Planets and Life
... luminosity is determined almost entirely by one thing – star mass! There are seven major spectral type of stars: O, B, A, F, G, K, M. The spectral sequence OBAFGKM runs from hot to cool in terms of surface temperature of stars. ...
... luminosity is determined almost entirely by one thing – star mass! There are seven major spectral type of stars: O, B, A, F, G, K, M. The spectral sequence OBAFGKM runs from hot to cool in terms of surface temperature of stars. ...
Frantic Finish - Max-Planck
... ity supernovae. A viable theory must provide an adequate explanation of this fact. Nickel is also the topic of Janka’s most recent work, which has just been published in the Astrophysical Journal. It deals with what dying stars leave behind – supernova remnants. Observations and measurements of high ...
... ity supernovae. A viable theory must provide an adequate explanation of this fact. Nickel is also the topic of Janka’s most recent work, which has just been published in the Astrophysical Journal. It deals with what dying stars leave behind – supernova remnants. Observations and measurements of high ...
ExamIIRevFa06
... from the resulting sphere with a pump. Two eight-horse teams could not pull the spheres apart, even though the hemispheres fell apart when air was re-admitted. Suppose von Güricke had tied both teams of horses to one side and bolted the other side to a heavy tree trunk. In this case the tension in t ...
... from the resulting sphere with a pump. Two eight-horse teams could not pull the spheres apart, even though the hemispheres fell apart when air was re-admitted. Suppose von Güricke had tied both teams of horses to one side and bolted the other side to a heavy tree trunk. In this case the tension in t ...
Manual - Test Equipment Depot
... This is called astrology; the word is from the Greek meaning the “Science of the Stars”. Thousands of years ago astrology was used to determine when to plant and harvest crops. At a later date this developed into the idea that you may be able to tell the future by the position of the stars and plane ...
... This is called astrology; the word is from the Greek meaning the “Science of the Stars”. Thousands of years ago astrology was used to determine when to plant and harvest crops. At a later date this developed into the idea that you may be able to tell the future by the position of the stars and plane ...
Lecture 18
... sucked in. The other annihilates above the surface to cause radiation. Since its close to the surface, the light gets redshifted escaping, but it carries energy with it! ...
... sucked in. The other annihilates above the surface to cause radiation. Since its close to the surface, the light gets redshifted escaping, but it carries energy with it! ...
Conference Summary Richard Ellis (Caltech) ITALIA
... Signature of metal-free Pop III stars may be realized with high quality spectroscopy (e.g. He II 1640 ~ 1-10% Ly ) to z~14 NB: He II is only briefly visible in nebular phase (~ Myr) ...
... Signature of metal-free Pop III stars may be realized with high quality spectroscopy (e.g. He II 1640 ~ 1-10% Ly ) to z~14 NB: He II is only briefly visible in nebular phase (~ Myr) ...
AAS Poster, NM 2002: "The Discovery of New
... IC10 is a Local Group dwarf irregular galaxy described by Hubble (1936) as ``one of the most curious objects in the sky". Massey and Armandoff (1995) proposed that it is currently undergoing a starburst: despite its small size, it contains 15 spectroscopically confirmed Wolf-Rayet stars, which is a ...
... IC10 is a Local Group dwarf irregular galaxy described by Hubble (1936) as ``one of the most curious objects in the sky". Massey and Armandoff (1995) proposed that it is currently undergoing a starburst: despite its small size, it contains 15 spectroscopically confirmed Wolf-Rayet stars, which is a ...
pptx
... are fainter (for given size) But red giant branch contains cool objects which are very bright Therefore these stars must be much larger than the faint, cool mainsequence stars ...
... are fainter (for given size) But red giant branch contains cool objects which are very bright Therefore these stars must be much larger than the faint, cool mainsequence stars ...
Chapter 20: Stellar Evolution: The Death of Stars PowerPoint
... • Luminosity increases by a factor of 108 – As bright as an entire galaxy – > 99% of energy is in the form of neutrinos ...
... • Luminosity increases by a factor of 108 – As bright as an entire galaxy – > 99% of energy is in the form of neutrinos ...
AST 105 HW #1 Solution Week of August 24 , 2015
... 100 billion individual galaxies, most of which are many thousands of light-years across. Each galaxy contains billions of stars, and many or most stars may be orbited by planets. 4. What did Carl Sagan mean when he said that we are “star stuff”? Answer: Nearly every atom from which we are made once ...
... 100 billion individual galaxies, most of which are many thousands of light-years across. Each galaxy contains billions of stars, and many or most stars may be orbited by planets. 4. What did Carl Sagan mean when he said that we are “star stuff”? Answer: Nearly every atom from which we are made once ...
Merit Badge College 2017 Astronomy
... a. Identify in the sky at least 10 constellations, at least four of which are in the zodiac. b. Identify at least eight conspicuous stars, five of which are of magnitude I or brighter. c. Make two sketches of the Big Dipper. In one sketch, show the Big Dipper’s orientation in the early evening ...
... a. Identify in the sky at least 10 constellations, at least four of which are in the zodiac. b. Identify at least eight conspicuous stars, five of which are of magnitude I or brighter. c. Make two sketches of the Big Dipper. In one sketch, show the Big Dipper’s orientation in the early evening ...
Introduction to Galaxies and Cosmology Exercises 2
... galaxy has just finished forming stars (i.e. all stars are main sequence stars) and that the upper/lower mass limits are given by Mlow = 0.1M⊙ and Mhigh = 100M⊙ . b) What fraction of stars in the galaxy have masses higher than 10M⊙ ? c) What fraction of the luminosity from the galaxy is emitted from ...
... galaxy has just finished forming stars (i.e. all stars are main sequence stars) and that the upper/lower mass limits are given by Mlow = 0.1M⊙ and Mhigh = 100M⊙ . b) What fraction of stars in the galaxy have masses higher than 10M⊙ ? c) What fraction of the luminosity from the galaxy is emitted from ...
Volume 2 (Issue 7), July 2013
... located with the naked eye, resembling a star of 6th magnitude. It is easy to find with binoculars, even from urban areas. Its identity can be confirmed by watching its movements from night to night. At oppositions, which occur a year and four days apart, a magnification of 500times will show Uranus ...
... located with the naked eye, resembling a star of 6th magnitude. It is easy to find with binoculars, even from urban areas. Its identity can be confirmed by watching its movements from night to night. At oppositions, which occur a year and four days apart, a magnification of 500times will show Uranus ...
Circular ac
... Lyra.[1][2] The planet was discovered by NASA's Kepler spacecraft using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured. NASA announced the confirmation of the exoplanet on 6 January 2015.[1] Although it is not habitable, as of June ...
... Lyra.[1][2] The planet was discovered by NASA's Kepler spacecraft using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured. NASA announced the confirmation of the exoplanet on 6 January 2015.[1] Although it is not habitable, as of June ...
Other Planetary Systems
... After the Formation of the Planets We might expect to see in the Solar System: 1. leftover gas 2. evidence of large collisions that took place as the biggest lumps merged 3. leftover ‘rubble’ dating back to the formation stage (unaccreted lumps) - plus evidence that it all happened at about the sam ...
... After the Formation of the Planets We might expect to see in the Solar System: 1. leftover gas 2. evidence of large collisions that took place as the biggest lumps merged 3. leftover ‘rubble’ dating back to the formation stage (unaccreted lumps) - plus evidence that it all happened at about the sam ...
Distant galaxies and quasars The ages of things Light
... • Massive, rich clusters of galaxies were probably rarer in the past • This result has been controversial over the last twenty years .. but latest studies seem to confirm it is correct • The best way to find massive clusters is by X-ray surveys... they stand out very clearly ...
... • Massive, rich clusters of galaxies were probably rarer in the past • This result has been controversial over the last twenty years .. but latest studies seem to confirm it is correct • The best way to find massive clusters is by X-ray surveys... they stand out very clearly ...
Scales This is a 16 meter by 16 meter scene. A meter is close in size
... This is a 16 meter by 16 meter scene. A meter is close in size to a yard, for those of you who still think in English units. And you see someone sitting on a bench. Next we zoom out and see a scene that is 1 mile square, and you start seeing a city. At 100 miles on a side, you see a landscape. It se ...
... This is a 16 meter by 16 meter scene. A meter is close in size to a yard, for those of you who still think in English units. And you see someone sitting on a bench. Next we zoom out and see a scene that is 1 mile square, and you start seeing a city. At 100 miles on a side, you see a landscape. It se ...
Review 3 - Physics and Astronomy
... 2. Detecting parallaxes means that Earth orbits around Sun 3. Maximum parallactic shift (two positions of the Earth’s orbit 6 months apart) ...
... 2. Detecting parallaxes means that Earth orbits around Sun 3. Maximum parallactic shift (two positions of the Earth’s orbit 6 months apart) ...
Slide 1
... A light year is the distance light travels in one year. One light year = six trillion miles. ...
... A light year is the distance light travels in one year. One light year = six trillion miles. ...
Galaxies
... The central supermassive black hole. Globular clusters. Population I stars in the disk and spiral arms. Neutral hydrogen gas, invisible in the optical, but visible in the 21 cm radio line. ...
... The central supermassive black hole. Globular clusters. Population I stars in the disk and spiral arms. Neutral hydrogen gas, invisible in the optical, but visible in the 21 cm radio line. ...
Corvus (constellation)
Corvus is a small constellation in the Southern Celestial Hemisphere. Its name comes from the Latin word ""raven"" or ""crow"". It includes only 11 stars with brighter than 4.02 magnitudes. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The four brightest stars, Gamma, Delta, Epsilon, and Beta Corvi from a distinctive quadrilateral in the night sky. The young star Eta Corvi has been found to have two debris disks.