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 ...
16-6 How do astronomers measure distance?
... ____________________ 2. One light-year is equal to a distance of about 10 trillion kilometers. ____________________ 3. An astronomical unit is equal to the distance between Earth and the Moon. ____________________ 4. Proxima Centauri is the closest star to Earth other than the Sun. _________________ ...
... ____________________ 2. One light-year is equal to a distance of about 10 trillion kilometers. ____________________ 3. An astronomical unit is equal to the distance between Earth and the Moon. ____________________ 4. Proxima Centauri is the closest star to Earth other than the Sun. _________________ ...
Name
... 13. Star A has an apparent magnitude of .15 and is 1600 lya. Star B has an apparent magnitude of .86 and is 14 lya. If Star B is a white giant, what might be true about Star A? Star ...
... 13. Star A has an apparent magnitude of .15 and is 1600 lya. Star B has an apparent magnitude of .86 and is 14 lya. If Star B is a white giant, what might be true about Star A? Star ...
Rex Space
... the Red Spot which is a huge storm that has lasted for hundreds of years. *For example a huge storm has lasted for hundreds of years on Jupiter. Next, smaller than some moons in our solar system Mercury is the planet closest to the sun. It looks very similar to our moon. *For example Mercury is the ...
... the Red Spot which is a huge storm that has lasted for hundreds of years. *For example a huge storm has lasted for hundreds of years on Jupiter. Next, smaller than some moons in our solar system Mercury is the planet closest to the sun. It looks very similar to our moon. *For example Mercury is the ...
Star Of Wonder
... as seen from Earth, making the planets appear close together. By using Newton's theories of gravity and motion, we can calculate just when such conjunctions occurred in the past. Several occurred around the time of Jesus' birth. In 7 BC, Jupiter passed Saturn on May 29, then went into "retrograde mo ...
... as seen from Earth, making the planets appear close together. By using Newton's theories of gravity and motion, we can calculate just when such conjunctions occurred in the past. Several occurred around the time of Jesus' birth. In 7 BC, Jupiter passed Saturn on May 29, then went into "retrograde mo ...
The Sun: Home Star
... Venus! Know distance in AU from Kepler’s laws. Know speed of light, measure travel time => distance in km, known fraction of AU; get AU in km ...
... Venus! Know distance in AU from Kepler’s laws. Know speed of light, measure travel time => distance in km, known fraction of AU; get AU in km ...
May 2016 night sky chart
... your head, called the zenith point, and the outer circular edge represents the horizon. ...
... your head, called the zenith point, and the outer circular edge represents the horizon. ...
Cetus and Lepus
... a wide double star; the secondary is 93 Ceti, a blue-white hued star of magnitude 5.6 γ Ceti, Kaffaljidhma ("head of the whale") is a very close double star. The primary is a yellowhued star of magnitude 3.5, and the secondary is a blue-hued star of magnitude 6.6. Tau Ceti is spectrally similar to t ...
... a wide double star; the secondary is 93 Ceti, a blue-white hued star of magnitude 5.6 γ Ceti, Kaffaljidhma ("head of the whale") is a very close double star. The primary is a yellowhued star of magnitude 3.5, and the secondary is a blue-hued star of magnitude 6.6. Tau Ceti is spectrally similar to t ...
WK8
... "One of the most impressive discoveries was the origin of the energy of the stars. One of the men who discovered this was out with his girl friend the night after he realized that nuclear reactions must be going on in the stars in order to make them shine. She said "Look at how pretty the stars shin ...
... "One of the most impressive discoveries was the origin of the energy of the stars. One of the men who discovered this was out with his girl friend the night after he realized that nuclear reactions must be going on in the stars in order to make them shine. She said "Look at how pretty the stars shin ...
PHYS 390 Lecture 3
... If one can determine the luminosity of a star WITHOUT knowing d, then a measurement of the flux F on Earth can be inverted to find d. That is: (i) extract L from some observable characteristic of the star (ii) measure F on Earth (iii) use F = L / 4πd2 to solve for d. The problem with this approach i ...
... If one can determine the luminosity of a star WITHOUT knowing d, then a measurement of the flux F on Earth can be inverted to find d. That is: (i) extract L from some observable characteristic of the star (ii) measure F on Earth (iii) use F = L / 4πd2 to solve for d. The problem with this approach i ...
An Introduction to Astronomy and Cosmology
... Eve or the 30th June. Since the time definition was changed, 22 leap seconds have had to be added, about one every 18 months, but there were none between 1998 and 2005 showing the slowdown is not particularly regular. Leap seconds are somewhat of a nuisance for systems such as the Global Positioning ...
... Eve or the 30th June. Since the time definition was changed, 22 leap seconds have had to be added, about one every 18 months, but there were none between 1998 and 2005 showing the slowdown is not particularly regular. Leap seconds are somewhat of a nuisance for systems such as the Global Positioning ...
lifedeath - University of Glasgow
... Hydrogen fusion – fuelling a star’s nuclear furnace H = Hydrogen He = Helium ...
... Hydrogen fusion – fuelling a star’s nuclear furnace H = Hydrogen He = Helium ...
Ch. 20-2 Sun Study Gd. Revised
... 4. When a meteoroid enters Earth’s atmosphere, friction causes it to burn up and produce a streak of light called a(n) __________________________________________________ . 5. A chunk of ice and dust whose orbit is usually a long, narrow ellipse is a(n) __________________ . 6. If a meteoroid hits Ear ...
... 4. When a meteoroid enters Earth’s atmosphere, friction causes it to burn up and produce a streak of light called a(n) __________________________________________________ . 5. A chunk of ice and dust whose orbit is usually a long, narrow ellipse is a(n) __________________ . 6. If a meteoroid hits Ear ...
stars and planets
... gas in the interstellar medium while others are the result of the death throws of a massive star. • Hydrogen clumps together inside these clouds of gas growing ever larger and hotter until eventually the early stage of a star called a Protostar is formed. As gravity collapses the Protostar even more ...
... gas in the interstellar medium while others are the result of the death throws of a massive star. • Hydrogen clumps together inside these clouds of gas growing ever larger and hotter until eventually the early stage of a star called a Protostar is formed. As gravity collapses the Protostar even more ...
Mon May 27, 2013 THE VENERABLE BEDE FEAST DAY On May
... There was a solar eclipse on May 28th - no, not yesterday; this eclipse happened way back in the year 585 B.C., which is a little before my time. What was noteworthy about the eclipse is that this celestial event brought two opposing armies to a standstill! As the historian Herodotus tells us: “Just ...
... There was a solar eclipse on May 28th - no, not yesterday; this eclipse happened way back in the year 585 B.C., which is a little before my time. What was noteworthy about the eclipse is that this celestial event brought two opposing armies to a standstill! As the historian Herodotus tells us: “Just ...
1/2016
... Description: Delta Cephei is the prototype of the Cepheid class of variable stars. With a change in visual magnitude of 3.5 to 4.4, delta Cephei’s entire range of variability can be observed with the unaided eye. Its period of 5.366 days makes it an attractive candidate for anyone anxious to obtain ...
... Description: Delta Cephei is the prototype of the Cepheid class of variable stars. With a change in visual magnitude of 3.5 to 4.4, delta Cephei’s entire range of variability can be observed with the unaided eye. Its period of 5.366 days makes it an attractive candidate for anyone anxious to obtain ...
Lecture 24 - Empyrean Quest Publishers
... which is ½ the maximum angular difference in position: d (in parsecs) = 1/p (p in arc seconds) 1 parsec is the distance at which the parallax of a star is 1 arcsec. Parallax method works for stars closer than about 100 parsecs. (1 parsec = 3.26 LY.) How bright (L in watts)? Luminosity at the source ...
... which is ½ the maximum angular difference in position: d (in parsecs) = 1/p (p in arc seconds) 1 parsec is the distance at which the parallax of a star is 1 arcsec. Parallax method works for stars closer than about 100 parsecs. (1 parsec = 3.26 LY.) How bright (L in watts)? Luminosity at the source ...
Integrative Studies 410 Our Place in the Universe
... • may contain millions of stars • Old stars • Great tool to study stellar life cycle ...
... • may contain millions of stars • Old stars • Great tool to study stellar life cycle ...
Variable and Binary Stars
... – Spectral type F2-A2, yellow or white giant – Population II (as one would expect in a globular cluster) ...
... – Spectral type F2-A2, yellow or white giant – Population II (as one would expect in a globular cluster) ...
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.