Doppler Effect
... 1. became higher and higher as the source approached and became lower and lower as the source receded 2. stayed at a constant high pitch as the source approached and then dropped to a constant lower pitch as the source receded 3. stayed at the same constant pitch throughout the motion 4. stayed at t ...
... 1. became higher and higher as the source approached and became lower and lower as the source receded 2. stayed at a constant high pitch as the source approached and then dropped to a constant lower pitch as the source receded 3. stayed at the same constant pitch throughout the motion 4. stayed at t ...
An interesting nebular object in LDN 288
... a. HH 100 (see Fig.5a). It is situated near the well-known cone-like cometary nebula NGC 6729. There are two jets: one is a straight jet while the second one is spiral. b. SNO 35 [3] (see Fig.5b). This object (a in Fig.5b) has a spiral jet, at the end of which there is a condensation (b in Fig.5b). ...
... a. HH 100 (see Fig.5a). It is situated near the well-known cone-like cometary nebula NGC 6729. There are two jets: one is a straight jet while the second one is spiral. b. SNO 35 [3] (see Fig.5b). This object (a in Fig.5b) has a spiral jet, at the end of which there is a condensation (b in Fig.5b). ...
The cosmological distance ladder
... was 3.3% larger that the known mean distance. We determine the Earth-Sun distance. Our value was 6% larger than the true value. Rarely in science do we know the true value of something we are measuring. Otherwise it wouldn’t be called research! But we think it was a useful exercise to determine thes ...
... was 3.3% larger that the known mean distance. We determine the Earth-Sun distance. Our value was 6% larger than the true value. Rarely in science do we know the true value of something we are measuring. Otherwise it wouldn’t be called research! But we think it was a useful exercise to determine thes ...
February - Amateur Telescope Makers of Boston
... Some of the other planets can be equally entertaining though. Venus just put on a spectacular show, first shining brightly in the western sky and also putting on a great show of daily motion as it slid down from its greatest eastern elongation with ever increasing speed and culminating with the show ...
... Some of the other planets can be equally entertaining though. Venus just put on a spectacular show, first shining brightly in the western sky and also putting on a great show of daily motion as it slid down from its greatest eastern elongation with ever increasing speed and culminating with the show ...
Planetary Nebula
... Low Mass StarsIf a Star has a mass of less then 4 stellar masses, then the Star will become a Red Giant when it has used most of its Hydrogen in the process of nuclear fusion. This Red Giant will lose its mass by gently ejecting its outer layers to form a Planetary Nebula. There are between 20,000 ...
... Low Mass StarsIf a Star has a mass of less then 4 stellar masses, then the Star will become a Red Giant when it has used most of its Hydrogen in the process of nuclear fusion. This Red Giant will lose its mass by gently ejecting its outer layers to form a Planetary Nebula. There are between 20,000 ...
Powerpoint Presentation (large file)
... • Intense beams of radiation emanate from regions near the north and south magnetic poles of a neutron star • These beams are produced by streams of charged particles moving in the star’s intense magnetic field ...
... • Intense beams of radiation emanate from regions near the north and south magnetic poles of a neutron star • These beams are produced by streams of charged particles moving in the star’s intense magnetic field ...
The Moon.
... Answer: The stars appear to move because of Earth’s rotation. Constellations or patterns of stars also change with the seasons because Earth is orbiting around the sun. 3. Why do star patterns or constellations change with the seasons? Answer: The constellations have been in the same positions for t ...
... Answer: The stars appear to move because of Earth’s rotation. Constellations or patterns of stars also change with the seasons because Earth is orbiting around the sun. 3. Why do star patterns or constellations change with the seasons? Answer: The constellations have been in the same positions for t ...
THE ORION CONSTELLATION the Great Hunter
... photographed objects in the night sky, and is among the most intensely studied celestial features. The nebula has revealed much about the process of how stars and planetary systems are formed from collapsing clouds of gas and dust. Astronomers have directly observed protoplanetary disks, brown dwarf ...
... photographed objects in the night sky, and is among the most intensely studied celestial features. The nebula has revealed much about the process of how stars and planetary systems are formed from collapsing clouds of gas and dust. Astronomers have directly observed protoplanetary disks, brown dwarf ...
The extragalactic universe and distance measurements
... – Can then use measurements of its apparent brightness to determine its distance. – In astronomical context, need to find “standard candles” – objects whose luminosity we know. ...
... – Can then use measurements of its apparent brightness to determine its distance. – In astronomical context, need to find “standard candles” – objects whose luminosity we know. ...
Lecture 10
... Formation of a degenerate core. No helium ignition Æ End as a He white dwarf 0.5 Msun < M < 2 Msun – Central Hydrogen burning, Helium flash, Helium burning Æ End as CO White dwarf. 2 Msun < M < 8 Msun – Central Hydrogen burning, Helium ignites non degenerately Æ End as CO White dwarf. 8 Msun < M < 2 ...
... Formation of a degenerate core. No helium ignition Æ End as a He white dwarf 0.5 Msun < M < 2 Msun – Central Hydrogen burning, Helium flash, Helium burning Æ End as CO White dwarf. 2 Msun < M < 8 Msun – Central Hydrogen burning, Helium ignites non degenerately Æ End as CO White dwarf. 8 Msun < M < 2 ...
EXAM II REVIEW
... • B. have less hydrogen than low mass stars • C. have less helium than low mass stars • D. release less energy per nuclear reaction than low mass stars ...
... • B. have less hydrogen than low mass stars • C. have less helium than low mass stars • D. release less energy per nuclear reaction than low mass stars ...
... • Adding mass to a degenerate white dwarf makes it shrink and increases its gas pressure to offset the increased gravity – Continually adding mass will eventually make the white star collapse – The point of maximum mass for collapse is called the Chandrasekhar Limit and has a value of 1.4 M – All o ...
Slide 1
... A. the speed at which the molecules of the gas making up the atmosphere should attain in order to overcome the force of gravity B. the speed of the planet along its orbit C. the speed in space of the sun together with all the planets revolving around in D. the take-off speed of Rockets ...
... A. the speed at which the molecules of the gas making up the atmosphere should attain in order to overcome the force of gravity B. the speed of the planet along its orbit C. the speed in space of the sun together with all the planets revolving around in D. the take-off speed of Rockets ...
– 1 – 1. Historical Notes for Ay 123 1.1.
... at lower masses than this limit, stars are called “brown dwarfs”. We will see that the upper mass limit is related to pulsational instabilities brought on by the very high radiation pressure in such luminous stars. Movie: simulation of orbiting binary stars by Terry Herter of Cornell, http://instruc ...
... at lower masses than this limit, stars are called “brown dwarfs”. We will see that the upper mass limit is related to pulsational instabilities brought on by the very high radiation pressure in such luminous stars. Movie: simulation of orbiting binary stars by Terry Herter of Cornell, http://instruc ...
Chapter One: Mapping the Earth`s Surface
... To find Polaris use the Big Dipper: 1) Find the 2 stars at the end of the Big Dipper’s bowl. 2) These 2 “pointer” stars point to Polaris ...
... To find Polaris use the Big Dipper: 1) Find the 2 stars at the end of the Big Dipper’s bowl. 2) These 2 “pointer” stars point to Polaris ...
One World, One Sky Planetarium Show Field Trip - Science in Pre-K
... look directly at the sun! It is so bright it can burn your eyes. Can you ever see the moon in the day time? Look for the moon. If you find it, notice what shape it is. Can you draw the shape of the moon? Discuss: If the sun is a star, why does it appear different from other stars in the sky? (We ...
... look directly at the sun! It is so bright it can burn your eyes. Can you ever see the moon in the day time? Look for the moon. If you find it, notice what shape it is. Can you draw the shape of the moon? Discuss: If the sun is a star, why does it appear different from other stars in the sky? (We ...
The masses of stars
... supergiant stars – named because they are more luminous, and thus must be larger than the red giants of comparable temperature. Their radii extend up to about 1500 times that of the Sun, and examples in the night sky include Betelgeuse (a red, and thus cool, supergiant) and Rigel a hot (blue-white) ...
... supergiant stars – named because they are more luminous, and thus must be larger than the red giants of comparable temperature. Their radii extend up to about 1500 times that of the Sun, and examples in the night sky include Betelgeuse (a red, and thus cool, supergiant) and Rigel a hot (blue-white) ...
PH607 – Galaxies
... presence of dark matter in galaxy halos. A MACHO is a small chunk of normal baryonic matter, which emits little or no radiation and drifts through interstellar space. Since MACHOs would not emit any light of their own, they would be very hard to detect. Candidates. MACHOs could be black holes, neutr ...
... presence of dark matter in galaxy halos. A MACHO is a small chunk of normal baryonic matter, which emits little or no radiation and drifts through interstellar space. Since MACHOs would not emit any light of their own, they would be very hard to detect. Candidates. MACHOs could be black holes, neutr ...
CHAPTER 7—ATOMS AND STARLIGHT
... a. As the train approaches, the horn will sound lower in pitch than when it is moving away. b. As the train approaches, the horn will sound higher in pitch than when it is moving away. c. There will be no change in the pitch of the horn as it moves by. d. The horn will get louder as the train moves ...
... a. As the train approaches, the horn will sound lower in pitch than when it is moving away. b. As the train approaches, the horn will sound higher in pitch than when it is moving away. c. There will be no change in the pitch of the horn as it moves by. d. The horn will get louder as the train moves ...
Ursa Minor
Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.