... A.Summer Solstice B.Winter Solstice C.Spring Equinox D.Fall Equinox E.right ascension has nothing to do with the position of the Sun 61. ? is the most abundant element in the Cosmos. A.oxygen B.carbon C.silicon D.helium E.hydrogen 62. The Meridian passes A.from the south celestial pole through the n ...
My notes: Lecture #1
... major axis in AU (average distance earth-sun) then simple: (semi major axis)3 = (period)2 or A3=P2 - the further away the planet the slower (remember Redshift demo Do an example: Jupiter 5.2AU then P2 = 5.23 therefore P=11.86 years !!! ...
... major axis in AU (average distance earth-sun) then simple: (semi major axis)3 = (period)2 or A3=P2 - the further away the planet the slower (remember Redshift demo Do an example: Jupiter 5.2AU then P2 = 5.23 therefore P=11.86 years !!! ...
"It`s increasingly seeming that the solar system is
... That's when astronomers discovered the first planet orbiting another star, a Jupiterlike gas giant named 51 Pegasi B. Over the next two decades, astronomers would discover thousands more worlds. According to estimates, as many as hundreds of billions of planets populate the Milky Way galaxy. The sol ...
... That's when astronomers discovered the first planet orbiting another star, a Jupiterlike gas giant named 51 Pegasi B. Over the next two decades, astronomers would discover thousands more worlds. According to estimates, as many as hundreds of billions of planets populate the Milky Way galaxy. The sol ...
The cosmological distance ladder
... MV = mV + 5 – 5 log d , where the apparent magnitudes have been corrected for interstellar extinction and d is the distance in parsecs. ...
... MV = mV + 5 – 5 log d , where the apparent magnitudes have been corrected for interstellar extinction and d is the distance in parsecs. ...
Unit 1
... materials when different degrees of heat are applied to them, such as melting ice or ice cream, boiling water or an egg, or freezing water. ...
... materials when different degrees of heat are applied to them, such as melting ice or ice cream, boiling water or an egg, or freezing water. ...
TYPES OF STARS
... We can classify stars based on the "strength" of their H lines. Look at the spectra of the seven stars at the end of this worksheet. Using their spectra, rank the seven stars according to the strength of their Hα lines. If you can't rank them all easily, try coloring in the area between the line co ...
... We can classify stars based on the "strength" of their H lines. Look at the spectra of the seven stars at the end of this worksheet. Using their spectra, rank the seven stars according to the strength of their Hα lines. If you can't rank them all easily, try coloring in the area between the line co ...
astro20 chap27 - Las Positas College
... – need to remove fraction of binary stars ~ 0.5 – need to remove stars that don’t live long enough ( ~ 1 billion years : 0.5 – need to remove all stars whose zones are small enough so that a planet is not likely to orbit within ~ 0.2 - 0.3 – alltogether this should be ~ 0.1 ...
... – need to remove fraction of binary stars ~ 0.5 – need to remove stars that don’t live long enough ( ~ 1 billion years : 0.5 – need to remove all stars whose zones are small enough so that a planet is not likely to orbit within ~ 0.2 - 0.3 – alltogether this should be ~ 0.1 ...
Lecture 15 (pdf from the powerpoint)
... collects at the center of the star • Gravity pulls the core of the star to a size smaller than the Earth’s diameter! • The core compresses so much that protons and electrons merge into neutrons, taking energy away from the core • The core collapses, and the layers above fall rapidly toward the cente ...
... collects at the center of the star • Gravity pulls the core of the star to a size smaller than the Earth’s diameter! • The core compresses so much that protons and electrons merge into neutrons, taking energy away from the core • The core collapses, and the layers above fall rapidly toward the cente ...
Solutions to Homework #4, AST 203, Spring 2009
... this homework). No more than two points off per problem for overly high precision. Three points off for each arithmetic or algebra error (although if the part of the problem in which this arithmetic error is made is worth only two points, then take only two points off ). Further calculations correct ...
... this homework). No more than two points off per problem for overly high precision. Three points off for each arithmetic or algebra error (although if the part of the problem in which this arithmetic error is made is worth only two points, then take only two points off ). Further calculations correct ...
Slide 1 - Physics @ IUPUI
... rotations (seconds) • Only seem to last 10,000 years or so • Hard to observe flare up only very randomly ...
... rotations (seconds) • Only seem to last 10,000 years or so • Hard to observe flare up only very randomly ...
Lecture 10: The Milky Way
... stars is usually measured as a log relative to the Sun. [Fe/H] is the iron-to-hydrogen ratio of a star relative to the Sun. [Fe/H]=-1 means there is 0.1 of the Sun’s Fe/H. [O/H]=+0.3 means there is 2x the Sun’s O/H. [Fe/O]=0 means there is the same (x1) Fe/O as the Sun. Typically [Fe/H] is used as i ...
... stars is usually measured as a log relative to the Sun. [Fe/H] is the iron-to-hydrogen ratio of a star relative to the Sun. [Fe/H]=-1 means there is 0.1 of the Sun’s Fe/H. [O/H]=+0.3 means there is 2x the Sun’s O/H. [Fe/O]=0 means there is the same (x1) Fe/O as the Sun. Typically [Fe/H] is used as i ...
Expansion of the Universe
... helium on the main sequence Massive stars need higher central temperatures and pressures to support themselves against gravitational collapse, and for this reason, fusion reactions in these stars proceed at a faster rate than in lower mass stars IMPORTANT: The result is that massive stars use up t ...
... helium on the main sequence Massive stars need higher central temperatures and pressures to support themselves against gravitational collapse, and for this reason, fusion reactions in these stars proceed at a faster rate than in lower mass stars IMPORTANT: The result is that massive stars use up t ...
Scientific method, night sky, parallax, angular size
... which has a parallax of 0.75 arcseconds. • If one can measure stellar positions to an accuracy of 0.01”, what is the farthest distance that can be measured to an accuracy of 10% or ...
... which has a parallax of 0.75 arcseconds. • If one can measure stellar positions to an accuracy of 0.01”, what is the farthest distance that can be measured to an accuracy of 10% or ...
Stars and Galaxies
... It may take several years for a spacecraft to reach other planets in our solar system. It may take several centuries to reach other stars in our galaxy. ...
... It may take several years for a spacecraft to reach other planets in our solar system. It may take several centuries to reach other stars in our galaxy. ...
Astronomy 10B List of Concepts– by Chapter
... o Why dust cools molecular clouds better than other ISM o Why are these where stars form? CHAPTER 12: STAR FORMATION • Observations of star formation • Stars form in molecular clouds because … • Stars form in clusters because … • The stages of star formation • Why does a disk form? • Why do jets for ...
... o Why dust cools molecular clouds better than other ISM o Why are these where stars form? CHAPTER 12: STAR FORMATION • Observations of star formation • Stars form in molecular clouds because … • Stars form in clusters because … • The stages of star formation • Why does a disk form? • Why do jets for ...
OVERVIEW: Stars and space
... 13.10 What is the life history of stars? Using skills, knowledge and understanding of how science works: • to explain how stars are able to maintain their energy output for millions of years • to explain why the early Universe contained only hydrogen but now contains a large variety of different ele ...
... 13.10 What is the life history of stars? Using skills, knowledge and understanding of how science works: • to explain how stars are able to maintain their energy output for millions of years • to explain why the early Universe contained only hydrogen but now contains a large variety of different ele ...
Today`s Powerpoint
... - Whole star pulsates more and more violently. - Eventually, shells thrown off star altogether! 0.1 - 0.2 MSun ejected. - Shells appear as a nebula around star, called "Planetary Nebula" (awful, historical name, nothing to do with planets). ...
... - Whole star pulsates more and more violently. - Eventually, shells thrown off star altogether! 0.1 - 0.2 MSun ejected. - Shells appear as a nebula around star, called "Planetary Nebula" (awful, historical name, nothing to do with planets). ...
1 Sep: 6.13am BST 15 Sep: 6.43am BST 30 Sep: 7.14am BST
... hat, just above IC1396, is µ Cephei or Herschel’s Garnet Star, a red super giant. Comet 2009 P1 (Garradd) Comet 2009 P1 (Garradd) was discovered on 13th August 2009 by G J Garradd of Siding Spring Observatory Australia. While it is presently at Mag 8.0, it’s been reported as a hazy patch in binocula ...
... hat, just above IC1396, is µ Cephei or Herschel’s Garnet Star, a red super giant. Comet 2009 P1 (Garradd) Comet 2009 P1 (Garradd) was discovered on 13th August 2009 by G J Garradd of Siding Spring Observatory Australia. While it is presently at Mag 8.0, it’s been reported as a hazy patch in binocula ...
Astronomy Notes - Science with Ms. Peralez
... curve. Because the sun is not centered in the ellipse, the distance between the Sun and the Earth change during the year. ...
... curve. Because the sun is not centered in the ellipse, the distance between the Sun and the Earth change during the year. ...
1 Kepler`s Third Law
... A blackbody is an object that appears perfectly black (reflects no radiation at all) when cold (at absolute zero!). There are virtually no perfect blackbodies in the real world. On the other hand, almost any solid object has properties very similar to perfect blackbodies. Common everyday experience ...
... A blackbody is an object that appears perfectly black (reflects no radiation at all) when cold (at absolute zero!). There are virtually no perfect blackbodies in the real world. On the other hand, almost any solid object has properties very similar to perfect blackbodies. Common everyday experience ...
14 Things You Didn`t Know About How the Sun Will Die
... point the Sun will span 150 times its present size. 6. The dying star isn't completely dead yet, however. Gravity pushes shells of hydrogen and helium to densities where nuclear fusion can begin, and they are ignited, albeit for a short time. When this happens with the Sun, it will briefly be 2,100 ...
... point the Sun will span 150 times its present size. 6. The dying star isn't completely dead yet, however. Gravity pushes shells of hydrogen and helium to densities where nuclear fusion can begin, and they are ignited, albeit for a short time. When this happens with the Sun, it will briefly be 2,100 ...
Aquarius (constellation)
Aquarius is a constellation of the zodiac, situated between Capricornus and Pisces. Its name is Latin for ""water-carrier"" or ""cup-carrier"", and its symbol is 20px (Unicode ♒), a representation of water.Aquarius is one of the oldest of the recognized constellations along the zodiac (the sun's apparent path). It was one of the 48 constellations listed by the 2nd century AD astronomer Ptolemy, and it remains one of the 88 modern constellations. It is found in a region often called the Sea due to its profusion of constellations with watery associations such as Cetus the whale, Pisces the fish, and Eridanus the river.