Unit Two Worksheet – Astronomy
... Used to determine the distance from the earth to a star based on the shift in the apparent position of the star when viewed from different angles How bright a star appears to be from Earth A mass of gases that gives off enormous amounts of energy in the form of light and heat Very large, cool, brigh ...
... Used to determine the distance from the earth to a star based on the shift in the apparent position of the star when viewed from different angles How bright a star appears to be from Earth A mass of gases that gives off enormous amounts of energy in the form of light and heat Very large, cool, brigh ...
The Mass-Luminosity Relationship and Stellar Lifetimes
... • Our intuition would seem to say that since big stars have a lot more fuel to consume, they should last a lot longer than smaller stars. • It doesn’t work this way, however. If the luminosity of a star increases with the 4th power of the mass, that means that the star is producing energy and using ...
... • Our intuition would seem to say that since big stars have a lot more fuel to consume, they should last a lot longer than smaller stars. • It doesn’t work this way, however. If the luminosity of a star increases with the 4th power of the mass, that means that the star is producing energy and using ...
Star Life Cycles
... Stars can be bigger than the Sun! Giant and Supergiant stars are larger. Betelgeuse is 600 times greater in ...
... Stars can be bigger than the Sun! Giant and Supergiant stars are larger. Betelgeuse is 600 times greater in ...
Branches of Earth Science
... Light Year- Astronomers use light years to measure the distances ______________ stars o A light year is the distance that light ______________ in one year 9,460,730,472,580.8 km 5,878,630,000,000 miles Parallax- the apparent change in the ______________ of a star in the sky. o The change is due ...
... Light Year- Astronomers use light years to measure the distances ______________ stars o A light year is the distance that light ______________ in one year 9,460,730,472,580.8 km 5,878,630,000,000 miles Parallax- the apparent change in the ______________ of a star in the sky. o The change is due ...
C:\Documents and Settings\Administrator\Desktop\Lecture 15.wpd
... The Central Problem in astronomy is distance. What we see is basically a twodimensional picture of the sky. To interpret many pieces of information available to the astronomer we need to know how far away a star or galaxy is. Example: If you look at the sky, Sirius is brighter than Betelgeuse. But B ...
... The Central Problem in astronomy is distance. What we see is basically a twodimensional picture of the sky. To interpret many pieces of information available to the astronomer we need to know how far away a star or galaxy is. Example: If you look at the sky, Sirius is brighter than Betelgeuse. But B ...
Chapter 28 – Stars and Galaxies
... 1. The actual brightness of the star is luminosity 2. If two stars have the same surface temperature, the larger star would be more luminous 3. If the same size, hotter one would be brighter 4. Types of magnitude a. Absolute – as if all stars were same distance from earth b. Apparent – as they appea ...
... 1. The actual brightness of the star is luminosity 2. If two stars have the same surface temperature, the larger star would be more luminous 3. If the same size, hotter one would be brighter 4. Types of magnitude a. Absolute – as if all stars were same distance from earth b. Apparent – as they appea ...
Death of Stars - Astronomy @ Walton High School
... 1 Similar to a nova where a dwarf takes material from a giant. This time the explosion destroys the dwarf. Typically this takes place when the mass of the white dwarf is over 1.4 solar masses. 2 When a star has a mass greater than 8 solar masses. The red giant swells so much it collapses in on itsel ...
... 1 Similar to a nova where a dwarf takes material from a giant. This time the explosion destroys the dwarf. Typically this takes place when the mass of the white dwarf is over 1.4 solar masses. 2 When a star has a mass greater than 8 solar masses. The red giant swells so much it collapses in on itsel ...
Star Life Cycle - GSHS Mrs. Francomb
... Pumbaa: Oh. Gee. I always thought that they were balls of gas burning billions of miles away. Timon: Pumbaa, wit' you, everything's gas. ...
... Pumbaa: Oh. Gee. I always thought that they were balls of gas burning billions of miles away. Timon: Pumbaa, wit' you, everything's gas. ...
- Stevenson High School
... physically connected/bound to one another? Tell me about those stars. 4. Are there any stars that are not part of a constellation? Explain. 5. How is astrology and astronomy different? 6. How is astrology and astronomy related? 7. What is the significance of the zodiac? 8. If your zodiac sign is Vir ...
... physically connected/bound to one another? Tell me about those stars. 4. Are there any stars that are not part of a constellation? Explain. 5. How is astrology and astronomy different? 6. How is astrology and astronomy related? 7. What is the significance of the zodiac? 8. If your zodiac sign is Vir ...
Final Exam Earth science
... Main sequence stars. Hertzsprung-Russell diagram, a graph used by astronomers. It shows a relationship between surface temperature and brightness. Most stars (90%) form a diagonal band called the main sequence stars. In the main sequence, surface temperature increases as brightness increases. Our su ...
... Main sequence stars. Hertzsprung-Russell diagram, a graph used by astronomers. It shows a relationship between surface temperature and brightness. Most stars (90%) form a diagonal band called the main sequence stars. In the main sequence, surface temperature increases as brightness increases. Our su ...
Astronomy
... c. very similar to our sun d. both b and c 15. In the HR diagram, stable stars with the smallest mass and lowest temperature are found in the ______ of the diagram. a. center (main sequence) b. upper left corner c. upper right corner d. lower right corner ...
... c. very similar to our sun d. both b and c 15. In the HR diagram, stable stars with the smallest mass and lowest temperature are found in the ______ of the diagram. a. center (main sequence) b. upper left corner c. upper right corner d. lower right corner ...
Stellar Properties
... 2. Star A and B have same luminosity. If star A is 4 times closer to Earth then star B, then _____ to earthly viewer.: a=A is 4 x brighter, b=B is 4x brighter, c=A is 16 times brighter d=B is 16 times brighter, e=A is 64x brighter 3. Apparent magnitude is measure of: a=light output, b=light received ...
... 2. Star A and B have same luminosity. If star A is 4 times closer to Earth then star B, then _____ to earthly viewer.: a=A is 4 x brighter, b=B is 4x brighter, c=A is 16 times brighter d=B is 16 times brighter, e=A is 64x brighter 3. Apparent magnitude is measure of: a=light output, b=light received ...
Chapter 28 – Stars and Galaxies
... There are millions of light years between galaxies Sun belongs to the Milky Way Galaxy which is a spiral galaxy Milky Way belongs to the Local Group of about 30 galaxies ...
... There are millions of light years between galaxies Sun belongs to the Milky Way Galaxy which is a spiral galaxy Milky Way belongs to the Local Group of about 30 galaxies ...
Chapter 28 Stars and Their Characteristics
... (Volume x Luminosity) and Distance from Observer. Betelgeuse, one of the brightest stars in the Universe, does not appear to be as bright as our Sun, because of its distance from us compared to the Sun’s distance. ...
... (Volume x Luminosity) and Distance from Observer. Betelgeuse, one of the brightest stars in the Universe, does not appear to be as bright as our Sun, because of its distance from us compared to the Sun’s distance. ...
Lecture 13: The stars are suns
... and especially measurements of stellar distances (1838) made it possible for astronomers to derive properties of stars and establish the Sun-stellar connection. • Physical properties of stars we want to know: 1. How much energy do stars emit? Luminosity L (flux, distance) 2. How hot are they ? Surfa ...
... and especially measurements of stellar distances (1838) made it possible for astronomers to derive properties of stars and establish the Sun-stellar connection. • Physical properties of stars we want to know: 1. How much energy do stars emit? Luminosity L (flux, distance) 2. How hot are they ? Surfa ...
Cosmic Distance Ladder
... • Different orbital positions of the Earth causes nearby stars to appear to move relative to the more distant stars. • The annual parallax is defined as the difference in position of a star as seen from the Earth and Sun, i.e. the angle subtended at a star by the mean radius of the Earth's orbit aro ...
... • Different orbital positions of the Earth causes nearby stars to appear to move relative to the more distant stars. • The annual parallax is defined as the difference in position of a star as seen from the Earth and Sun, i.e. the angle subtended at a star by the mean radius of the Earth's orbit aro ...
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 ...
The Whole Darn Thing!
... Copernicus proposed a heliocentric system to replace Ptolemy’s geocentric system. Brahe took accurate measurements of the stars, and Kepler derived his 3 laws from the data. Galileo used a telescope to see moons of Jupiter and Venus is gibbous phase. Newton’s gravity finally explained many theoretic ...
... Copernicus proposed a heliocentric system to replace Ptolemy’s geocentric system. Brahe took accurate measurements of the stars, and Kepler derived his 3 laws from the data. Galileo used a telescope to see moons of Jupiter and Venus is gibbous phase. Newton’s gravity finally explained many theoretic ...
Some facts and concepts to have at your fingertips.
... maximum intensity is related to the temperature of the material. Example: cannon ball at 3000 deg K. Peak intensity is in the near-infrared. • A low density gas excited to emit gives an emission line spectrum. Example: neon light. • Cool gas in between the observer and a source of a continuous spect ...
... maximum intensity is related to the temperature of the material. Example: cannon ball at 3000 deg K. Peak intensity is in the near-infrared. • A low density gas excited to emit gives an emission line spectrum. Example: neon light. • Cool gas in between the observer and a source of a continuous spect ...
PHYS 390 Lecture 3
... distance. One may be able to correct for part of this using the spectrum of light from the star, which will be depleted in the blue because of scattering. Methods for finding L generally involve selecting a particular observable (e.g. surface temperature) of nearby stars whose distance is known from ...
... distance. One may be able to correct for part of this using the spectrum of light from the star, which will be depleted in the blue because of scattering. Methods for finding L generally involve selecting a particular observable (e.g. surface temperature) of nearby stars whose distance is known from ...
galaxies
... • young stars! only a few million years old • may still be surrounded by nebula from which they formed • located in the spiral arms of a galaxy • example: Pleiades ...
... • young stars! only a few million years old • may still be surrounded by nebula from which they formed • located in the spiral arms of a galaxy • example: Pleiades ...
Perseus (constellation)
Perseus, named after the Greek mythological hero Perseus, is a constellation in the northern sky. It was one of 48 listed by the 2nd-century astronomer Ptolemy and among the 88 modern constellations defined by the International Astronomical Union (IAU). It is located in the northern celestial hemisphere near several other constellations named after legends surrounding Perseus, including Andromeda to the west and Cassiopeia to the north. Perseus is also bordered by Aries and Taurus to the south, Auriga to the east, Camelopardalis to the north, and Triangulum to the west.The galactic plane of the Milky Way passes through Perseus but is mostly obscured by molecular clouds. The constellation's brightest star is the yellow-white supergiant Alpha Persei (also called Mirfak), which shines at magnitude 1.79. It and many of the surrounding stars are members of an open cluster known as the Alpha Persei Cluster. The best-known star, however, is Algol (Beta Persei), linked with ominous legends because of its variability, which is noticeable to the naked eye. Rather than being an intrinsically variable star, it is an eclipsing binary. Other notable star systems in Perseus include X Persei, a binary system containing a neutron star, and GK Persei, a nova that peaked at magnitude 0.2 in 1901. The Double Cluster, comprising two open clusters quite near each other in the sky, was known to the ancient Chinese. The constellation gives its name to the Perseus Cluster (Abell 426), a massive galaxy cluster located 250 million light-years from Earth. It hosts the radiant of the annual Perseids meteor shower—one of the most prominent meteor showers in the sky.