Chapter 12
... absolute magnitudes accurately because there are actually two different types of Cepheid variables. Cepheid I stars are brighter than Cepheid II stars (for the same period) by about a factor of 4 (or 1.5 magnitudes). Cepheid I stars are younger and metal richer than Cepheid II stars. 9. Another grou ...
... absolute magnitudes accurately because there are actually two different types of Cepheid variables. Cepheid I stars are brighter than Cepheid II stars (for the same period) by about a factor of 4 (or 1.5 magnitudes). Cepheid I stars are younger and metal richer than Cepheid II stars. 9. Another grou ...
ppt
... Which direction does it rotate? (east? west? ) When do we see the stars? How long does it take the earth to revolve around the sun? Ok: the north star, or Polaris, or “the star that does not walk”; why does it have this name? Use your planisphere (star wheel) for this. ...
... Which direction does it rotate? (east? west? ) When do we see the stars? How long does it take the earth to revolve around the sun? Ok: the north star, or Polaris, or “the star that does not walk”; why does it have this name? Use your planisphere (star wheel) for this. ...
Gravity (Chapter 11) Kepler`s Laws - FSU
... Derivation of Kepler’s Laws Kepler’s first law: With a bit more involved mathematics than we have presently at our disposal, one can show that the only closed solutions to Newton’s two body force are elliptical orbits (intermediate mechanics for physicists). Kepler’s second law: (Figure 11-8 of Tip ...
... Derivation of Kepler’s Laws Kepler’s first law: With a bit more involved mathematics than we have presently at our disposal, one can show that the only closed solutions to Newton’s two body force are elliptical orbits (intermediate mechanics for physicists). Kepler’s second law: (Figure 11-8 of Tip ...
Looking out at the Night Sky What questions do you have?
... Which direction does it rotate? (east? west? ) When do we see the stars? How long does it take the earth to revolve around the sun? Ok: the north star, or Polaris, or “the star that does not walk”; why does it have this name? Use your planisphere (star wheel) for this. ...
... Which direction does it rotate? (east? west? ) When do we see the stars? How long does it take the earth to revolve around the sun? Ok: the north star, or Polaris, or “the star that does not walk”; why does it have this name? Use your planisphere (star wheel) for this. ...
Astro twopages
... In this equation, P is pressure (force/area), r is distance from the center, M(r) is the net mass within r or the center (net mass located inside a sphere of radius r concentric with the , ρ(r) is the density at distance r and G is the universal gravitational constant. Distances (actually best expre ...
... In this equation, P is pressure (force/area), r is distance from the center, M(r) is the net mass within r or the center (net mass located inside a sphere of radius r concentric with the , ρ(r) is the density at distance r and G is the universal gravitational constant. Distances (actually best expre ...
ASTRONOMICAL ERRORS
... They had a segment bragging about the remote controlled focuser on one scope. The sales rep said it's useful for looking at "craters on the Moon... the rings of Saturn, the red spot on Jupiter or the canals on Mars." Which of these does not exist? 10. From a Star Trek Episode: On the way to the Klin ...
... They had a segment bragging about the remote controlled focuser on one scope. The sales rep said it's useful for looking at "craters on the Moon... the rings of Saturn, the red spot on Jupiter or the canals on Mars." Which of these does not exist? 10. From a Star Trek Episode: On the way to the Klin ...
the planets - St John Brebeuf
... It also contains at least one dwarf planet - Pluto. Pluto is indeed now considered to be a member of the Kuiper Belt - the largest object belonging to it, in fact! Like other members of the Belt, it is composed primarily of rock and ice and is relatively small.. The Kuiper Belt is also believed to b ...
... It also contains at least one dwarf planet - Pluto. Pluto is indeed now considered to be a member of the Kuiper Belt - the largest object belonging to it, in fact! Like other members of the Belt, it is composed primarily of rock and ice and is relatively small.. The Kuiper Belt is also believed to b ...
The Hidden Lives of Galaxies NSTA 2001
... that they are hot but faint. There are probably very large numbers of these, but they are not easy to detect. ...
... that they are hot but faint. There are probably very large numbers of these, but they are not easy to detect. ...
Powerpoint Presentation (large file)
... By carefully examining a star’s spectral lines, astronomers can determine whether that star is a main-sequence star, giant, supergiant, or white dwarf ...
... By carefully examining a star’s spectral lines, astronomers can determine whether that star is a main-sequence star, giant, supergiant, or white dwarf ...
What tool do astronomers use to understand the evolution of stars?
... Mass-Lifetime relation • The lifetime of a star (on the main sequence) is longer if more fuel is available and shorter if that fuel is burned more rapidly • The available fuel is (roughly) proportional to the mass of the star • From the previous, we known that luminosity is much higher for higher m ...
... Mass-Lifetime relation • The lifetime of a star (on the main sequence) is longer if more fuel is available and shorter if that fuel is burned more rapidly • The available fuel is (roughly) proportional to the mass of the star • From the previous, we known that luminosity is much higher for higher m ...
STAR UNIT FLASH BACKS
... 1. TRUE OR FALSE: If a star is colored red, that means that it is moving AWAY from us (due to Red Shift). 2. How long would it take for an F-22 Raptor jet flying at top speed (1,500 miles per hour) to fly from the earth to the sun? a.) 8 minutes ...
... 1. TRUE OR FALSE: If a star is colored red, that means that it is moving AWAY from us (due to Red Shift). 2. How long would it take for an F-22 Raptor jet flying at top speed (1,500 miles per hour) to fly from the earth to the sun? a.) 8 minutes ...
Class 11 and 12 lecture slides (giant planets)
... density lower than Jupiter because of smaller selfcompression effect (pressures lower). • Uranus/Neptune – thin envelope of hydrogen gas. Pressures too low to generate metallic hydrogen. Densities (and moment of inertia data) require large rock-ice cores in the interior. • All four planets have larg ...
... density lower than Jupiter because of smaller selfcompression effect (pressures lower). • Uranus/Neptune – thin envelope of hydrogen gas. Pressures too low to generate metallic hydrogen. Densities (and moment of inertia data) require large rock-ice cores in the interior. • All four planets have larg ...
File
... If Earth has sustained the continuous evolution of life through billions of years of storm and drama, then perhaps life itself provides a feedback mechanism that maintains liquid water. This notion was advanced by the biologists James Lovelock and Lynn Margulis in the 1970s and is referred to as the ...
... If Earth has sustained the continuous evolution of life through billions of years of storm and drama, then perhaps life itself provides a feedback mechanism that maintains liquid water. This notion was advanced by the biologists James Lovelock and Lynn Margulis in the 1970s and is referred to as the ...
PHYS-633: Problem set #0 Solutions
... hits its surface) to estimate how much dimmer the full moon appears in optical light compared to sunlight on Earth. Since the solar flux declines as (R /ae )2 , then a perfectly reflecting moon would have its surface brightness reduced by this fraction. With an albedo of 0.07, this surface brightne ...
... hits its surface) to estimate how much dimmer the full moon appears in optical light compared to sunlight on Earth. Since the solar flux declines as (R /ae )2 , then a perfectly reflecting moon would have its surface brightness reduced by this fraction. With an albedo of 0.07, this surface brightne ...
ASTR120 Homework 1 − Solutions
... Jupiter : Your diagram should look something like the one in box 4 - 1. In this case, the Earth ’ s orbit is the inferior planet orbit and Jupiter ’ s oribit replaces that of the Earth. From this diagram, you can tell that from conjunction to conjuction, Jupiter -the outer planet -- makes less than ...
... Jupiter : Your diagram should look something like the one in box 4 - 1. In this case, the Earth ’ s orbit is the inferior planet orbit and Jupiter ’ s oribit replaces that of the Earth. From this diagram, you can tell that from conjunction to conjuction, Jupiter -the outer planet -- makes less than ...
29.1 Models of the Solar System
... • The greater the degree of shift of the spectral lines, the faster the object is moving away • The star light DOES NOT appear red or blue (it still appears as white light from the star) • The “bar code” for each element either shifts to the shorter wavelength blue end of the spectrum or to the long ...
... • The greater the degree of shift of the spectral lines, the faster the object is moving away • The star light DOES NOT appear red or blue (it still appears as white light from the star) • The “bar code” for each element either shifts to the shorter wavelength blue end of the spectrum or to the long ...
Describing the Solar System File
... (This is the same direction of the swirling disk that formed from the nebula) ...
... (This is the same direction of the swirling disk that formed from the nebula) ...
Charting The Universe - University of Windsor
... highest and lowest points in the sky at noon, resulting in the longest and shortest day. The summer and winter solstices are on 21 June and 21 December, respectively. ...
... highest and lowest points in the sky at noon, resulting in the longest and shortest day. The summer and winter solstices are on 21 June and 21 December, respectively. ...
The Milky Way – A Classic Galaxy
... • Hubble found globulars in Andromeda; they were roughly spherically distributed, and centered on the center of the galaxy. • In our own sky, we’d known for over a hundred years that globulars are strongly concentrated in the summer sky; hardly any in the winter sky. Ergo We must be far from the ce ...
... • Hubble found globulars in Andromeda; they were roughly spherically distributed, and centered on the center of the galaxy. • In our own sky, we’d known for over a hundred years that globulars are strongly concentrated in the summer sky; hardly any in the winter sky. Ergo We must be far from the ce ...
Solar Furnaces
... at different energy levels (like the energy levels of an atom). Each electron must be at a higher energy than the one before it. • All these energetic electrons in one place give rise to a pressure: ELECTRON DEGENERACY PRESSURE • This is weird stuff: one teaspoon of white dwarf weighs 3 tons! If a w ...
... at different energy levels (like the energy levels of an atom). Each electron must be at a higher energy than the one before it. • All these energetic electrons in one place give rise to a pressure: ELECTRON DEGENERACY PRESSURE • This is weird stuff: one teaspoon of white dwarf weighs 3 tons! If a w ...
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.