Chapter 26.2 notes
... With the invention of the telescope, astronomers could measure the positions of stars with much greater accuracy. • The closer a star is to Earth, the greater is its parallax. • Astronomers have measured the parallax of many nearby stars and determined their distances from Earth. ...
... With the invention of the telescope, astronomers could measure the positions of stars with much greater accuracy. • The closer a star is to Earth, the greater is its parallax. • Astronomers have measured the parallax of many nearby stars and determined their distances from Earth. ...
Chapter 2. Discovering the Universe for Yourself
... any one time. Horizon—The boundary line dividing the ground and the sky. Zenith—The highest point in the sky, directly overhead. Meridian—The semicircle extending from the horizon due north to the zenith to the horizon due south. We can locate an object in the sky by specifying its altitude and its ...
... any one time. Horizon—The boundary line dividing the ground and the sky. Zenith—The highest point in the sky, directly overhead. Meridian—The semicircle extending from the horizon due north to the zenith to the horizon due south. We can locate an object in the sky by specifying its altitude and its ...
Constraining the formation of the Milky Way: Ages
... in strength during the disc evolution; (iv) the disc grows self-consistently as the result of cosmological gas accretion from filaments and (a small number of) early-on gas-rich mergers, as well as merger debris, with a last significant merger concluding ∼9 − 8 Gyr ago; (v) the disc gas-to-total mas ...
... in strength during the disc evolution; (iv) the disc grows self-consistently as the result of cosmological gas accretion from filaments and (a small number of) early-on gas-rich mergers, as well as merger debris, with a last significant merger concluding ∼9 − 8 Gyr ago; (v) the disc gas-to-total mas ...
Teacher`s Guide - Cornell Science Inquiry Partnerships
... c. Wrinkles vs. Height. As an example, discuss a plot of “number of wrinkles” vs. “height,” and ask the students to sketch where babies, teenagers, adults, and elderly people would be on this plot. d. Accuracy of Measurements. Also discuss with the students how well we can measure the above two prop ...
... c. Wrinkles vs. Height. As an example, discuss a plot of “number of wrinkles” vs. “height,” and ask the students to sketch where babies, teenagers, adults, and elderly people would be on this plot. d. Accuracy of Measurements. Also discuss with the students how well we can measure the above two prop ...
Larger, high-res file, best for printing
... century ago, the stars we now know as RR Lyrae variables were just being recognized as a separate class, as described in an article by C.C. Kiess in the August 1912 Publications of the ASP. Because most of these stars seemed to be in globular star clusters, he referred to them as cluster-type variab ...
... century ago, the stars we now know as RR Lyrae variables were just being recognized as a separate class, as described in an article by C.C. Kiess in the August 1912 Publications of the ASP. Because most of these stars seemed to be in globular star clusters, he referred to them as cluster-type variab ...
Star 1 A star is a massive, luminous ball of plasma held together by
... hundreds of thousands of stars located one billion light years away[37] —ten times the distance of the most distant star cluster previously observed. ...
... hundreds of thousands of stars located one billion light years away[37] —ten times the distance of the most distant star cluster previously observed. ...
Differential Rotation in A stars
... represents V = 3 km/s, M = 0 km/s. The blue line represents V=0 km/s, and M = 3 km/s. In wavelength space (left) the differences are barely noticeable. In Fourier space (right), the differences are larger. ...
... represents V = 3 km/s, M = 0 km/s. The blue line represents V=0 km/s, and M = 3 km/s. In wavelength space (left) the differences are barely noticeable. In Fourier space (right), the differences are larger. ...
Impact on stellar properties of changing physics SAC Summer
... was originally created by Ejnar Hertzsprung and Henry Norris Russell. It shows the relationship between the star’s luminosity or absolute magnitude versus its effective temperature or spectral type. In general, stars of greater luminosity populate the top of the diagram, while stars with higher surf ...
... was originally created by Ejnar Hertzsprung and Henry Norris Russell. It shows the relationship between the star’s luminosity or absolute magnitude versus its effective temperature or spectral type. In general, stars of greater luminosity populate the top of the diagram, while stars with higher surf ...
Powerpoint slides - Earth & Planetary Sciences
... Observations (2) • We can use the presentday observed planetary masses and compositions to reconstruct how much mass was there initially – the minimum mass solar nebula • This gives us a constraint on the initial nebula conditions e.g. how rapidly did its density fall off with distance? • The pictu ...
... Observations (2) • We can use the presentday observed planetary masses and compositions to reconstruct how much mass was there initially – the minimum mass solar nebula • This gives us a constraint on the initial nebula conditions e.g. how rapidly did its density fall off with distance? • The pictu ...
July - Antelope Valley Astronomy Club
... When isolated stars like our Sun reach the end of their lives, they're expected to blow off their outer layers in a roughly spherical configuration: a planetary nebula. But the most spectacular bubbles don't come from gas-and-plasma getting expelled into otherwise empty space, but from young, hot st ...
... When isolated stars like our Sun reach the end of their lives, they're expected to blow off their outer layers in a roughly spherical configuration: a planetary nebula. But the most spectacular bubbles don't come from gas-and-plasma getting expelled into otherwise empty space, but from young, hot st ...
How Marius Was Right and Galileo Was Wrong Even Though
... lights of varying size on a stellar sphere. ...
... lights of varying size on a stellar sphere. ...
PowerPoint
... • Intrinsic brightness compared to relative brightness • What does a telescope do? – Light gathering, resolution, and magnification – BIMA and SOFIA • Reflecting vs. refracting Nov 12, 2003 ...
... • Intrinsic brightness compared to relative brightness • What does a telescope do? – Light gathering, resolution, and magnification – BIMA and SOFIA • Reflecting vs. refracting Nov 12, 2003 ...
Stars, Galaxies, and the Universe Section 1
... compact, these regions spin and shrink and begin to form a flattened disk. The disk has a central concentration of matter called a protostar. • The protostar continues to contract and increase in temperature for several million years. Eventually the gas in the region becomes so hot that its electron ...
... compact, these regions spin and shrink and begin to form a flattened disk. The disk has a central concentration of matter called a protostar. • The protostar continues to contract and increase in temperature for several million years. Eventually the gas in the region becomes so hot that its electron ...
Module1: Scale of the Universe
... While(parallax(is(used(to(calculate(the(cosmic(distance(to(relatively(nearby(stars,(other( methods(must(be(used(for(much(more(distant(objects,(since(their(parallax(angle(is(too( small(to(measure(accurately.(One(comes(from(using(the(inherent(brightness(of(an( object.(The(luminosity(of(some(astronomic ...
... While(parallax(is(used(to(calculate(the(cosmic(distance(to(relatively(nearby(stars,(other( methods(must(be(used(for(much(more(distant(objects,(since(their(parallax(angle(is(too( small(to(measure(accurately.(One(comes(from(using(the(inherent(brightness(of(an( object.(The(luminosity(of(some(astronomic ...
The Search for Extrasolar Earth-like Planets
... center of mass, and thus is an indirect detection of a planet. Because only the star is monitored, only the planet’s (minimum) mass and orbital parameters can be measured. The first extrasolar giant planet discovered to orbit a nearby sun-like star [5] shocked the planetary and astronomy communities ...
... center of mass, and thus is an indirect detection of a planet. Because only the star is monitored, only the planet’s (minimum) mass and orbital parameters can be measured. The first extrasolar giant planet discovered to orbit a nearby sun-like star [5] shocked the planetary and astronomy communities ...
Chapter 7
... Planets move in elliptical orbits with Sun at one of the focal points. Line drawn from Sun to planet sweeps out equal areas in equal times. The square of the orbital period of any planet is proportional to cube of the average distance from the Sun to the planet. ...
... Planets move in elliptical orbits with Sun at one of the focal points. Line drawn from Sun to planet sweeps out equal areas in equal times. The square of the orbital period of any planet is proportional to cube of the average distance from the Sun to the planet. ...
28.2 Calculating Luminosity
... You have learned that in order to understand stars, astronomers want to know their luminosity. Luminosity describes how much light is coming from the star each second. Luminosity can be measured in watts (W). Measuring the luminosity of something as far away as a star is difficult to do. However, we ...
... You have learned that in order to understand stars, astronomers want to know their luminosity. Luminosity describes how much light is coming from the star each second. Luminosity can be measured in watts (W). Measuring the luminosity of something as far away as a star is difficult to do. However, we ...
An Introduction to Progressions and Directions
... determined that fewer than 40 degrees would have passed over the Midheaven in the time it would take Saturn to rise from its position in this birth chart. This might determine a life expectancy of just less than 40 years. Looking for contacts between directed and natal positions is very much like ou ...
... determined that fewer than 40 degrees would have passed over the Midheaven in the time it would take Saturn to rise from its position in this birth chart. This might determine a life expectancy of just less than 40 years. Looking for contacts between directed and natal positions is very much like ou ...
Chapter 4 Hydrostatic Equilibrium
... that it has been emitting energy at its present rate for several billion years, with relatively small variation. • The key to this stability is that main sequence stars are in a state of near perfect hydrostatic equilibrium. • In hydrostatic equilibrium the pressure gradients produced by thermonucle ...
... that it has been emitting energy at its present rate for several billion years, with relatively small variation. • The key to this stability is that main sequence stars are in a state of near perfect hydrostatic equilibrium. • In hydrostatic equilibrium the pressure gradients produced by thermonucle ...
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.