Powerpoint Presentation (large file)
... luminosity for main-sequence stars • The greater the mass of a main-sequence star, the greater its luminosity (and also the greater its radius and surface ...
... luminosity for main-sequence stars • The greater the mass of a main-sequence star, the greater its luminosity (and also the greater its radius and surface ...
The H-R Diagram
... upper left. The stars in different areas have distinctly different physical properties and are in different stages of their life. The Main Sequence: The main sequence goes from the upper left to the lower right. The stars at the upper left are hotter, larger, and more massive than the Sun. The Sun i ...
... upper left. The stars in different areas have distinctly different physical properties and are in different stages of their life. The Main Sequence: The main sequence goes from the upper left to the lower right. The stars at the upper left are hotter, larger, and more massive than the Sun. The Sun i ...
The Milky Way as a Spiral galaxy
... From the motions of stars in the galaxy, and the 21-cm data, we know that the galaxy rotates. The Sun takes ~250 million years to complete one orbit around the galactic center. The inner stars complete their orbits in shorter times. This differential rotation would destroy the spiral arms though, w ...
... From the motions of stars in the galaxy, and the 21-cm data, we know that the galaxy rotates. The Sun takes ~250 million years to complete one orbit around the galactic center. The inner stars complete their orbits in shorter times. This differential rotation would destroy the spiral arms though, w ...
Stars - RSM Home
... • When a neutron star is rapidly spinning, it is called PULSAR. It emits rapid pulses of radio waves and optical energy. • This is Pulsar B1509. It is spinning so rapidly(7 rotations/sec), 12 miles wide, it creates a hand-shaped nebula ...
... • When a neutron star is rapidly spinning, it is called PULSAR. It emits rapid pulses of radio waves and optical energy. • This is Pulsar B1509. It is spinning so rapidly(7 rotations/sec), 12 miles wide, it creates a hand-shaped nebula ...
Starlight & Stars - Wayne State University Physics and Astronomy
... Consequently, distance is the among the most difficult quantities to measure in astronomy 27 July 2005 ...
... Consequently, distance is the among the most difficult quantities to measure in astronomy 27 July 2005 ...
Astronomy 104: Homework Set 6 Due: Wednesday, April 1, 2015
... Earth. Use the relation between brightness (flux), luminosity and distance (see Destination 7) to determine the ratio of the distance to M 31 and the distance of the LMC? If the LMC is 50 kpc distant, how far is M 31 from Earth? Is your result with 10% of the value for the distance of M31 given in D ...
... Earth. Use the relation between brightness (flux), luminosity and distance (see Destination 7) to determine the ratio of the distance to M 31 and the distance of the LMC? If the LMC is 50 kpc distant, how far is M 31 from Earth? Is your result with 10% of the value for the distance of M31 given in D ...
Stars and Galaxies part 3
... • Most stars are composed predominately of hydrogen, the lightest and most basic element in the universe. • Helium is the second most common element in a typical star. • Hydrogen and Helium = 96-99% of a star’s mass. ...
... • Most stars are composed predominately of hydrogen, the lightest and most basic element in the universe. • Helium is the second most common element in a typical star. • Hydrogen and Helium = 96-99% of a star’s mass. ...
Some Facts and Hypotheses regard
... reoord of the sky as it appeared in his day, in view of possible future change. A Nova was observed in 389 A.D. in Aquila. Another famous Nova was the star seen by Tyoho when out walking one November evening in 1572. It appeared in Cassioprea, and became as bright as Venus and was even visible by da ...
... reoord of the sky as it appeared in his day, in view of possible future change. A Nova was observed in 389 A.D. in Aquila. Another famous Nova was the star seen by Tyoho when out walking one November evening in 1572. It appeared in Cassioprea, and became as bright as Venus and was even visible by da ...
LAB #3 - GEOCITIES.ws
... LAB. You will begin lab with a short quiz on these questions. What are Magnitudes? Because what we know about stars is due solely to our analysis of their light, it is very important to develop further the idea of stellar magnitude, or how bright a star is. When the Greeks scientist Hipparcos determ ...
... LAB. You will begin lab with a short quiz on these questions. What are Magnitudes? Because what we know about stars is due solely to our analysis of their light, it is very important to develop further the idea of stellar magnitude, or how bright a star is. When the Greeks scientist Hipparcos determ ...
Main Sequence stars
... magnitude of 3.72 and an absolute magnitude of 6.1. From which of these stars do we receive more light? ...
... magnitude of 3.72 and an absolute magnitude of 6.1. From which of these stars do we receive more light? ...
The Milky Way
... The flux received from the light is proportional to its intrinsic brightness or luminosity (L) and inversely proportional to the square of the distance (d): ...
... The flux received from the light is proportional to its intrinsic brightness or luminosity (L) and inversely proportional to the square of the distance (d): ...
The Celestial Sphere - Department of Physics and Astronomy
... Zenith: The point directly overhead There are 88 official constellations in the celestial sphere. The constellations have their origins from the Mesopotamian (1000 BC). These constellations were adapted by the ancient Greeks and compiled into a list by Claudis Ptolemy (90-168 AD). ...
... Zenith: The point directly overhead There are 88 official constellations in the celestial sphere. The constellations have their origins from the Mesopotamian (1000 BC). These constellations were adapted by the ancient Greeks and compiled into a list by Claudis Ptolemy (90-168 AD). ...
Physical Science Laboratory: Skyglobe
... elevation around 50o then West for the setting time.) Moon rise _________________ Moon set ____________________ Short Glossary of Terms: Azimuth ...
... elevation around 50o then West for the setting time.) Moon rise _________________ Moon set ____________________ Short Glossary of Terms: Azimuth ...
Major Stars of the Orion Constellation
... Similar to Saiph, Gamma Orionis, Bellatrix, is another blue-white Supergiant in the B2 class at 21 500 Kelvin. At a distance of 240 light years, its luminosity is 6400 times that of our Sun with an appreciable amount of UV coming from its hot surface. The stars luminosity is mainly attributable to i ...
... Similar to Saiph, Gamma Orionis, Bellatrix, is another blue-white Supergiant in the B2 class at 21 500 Kelvin. At a distance of 240 light years, its luminosity is 6400 times that of our Sun with an appreciable amount of UV coming from its hot surface. The stars luminosity is mainly attributable to i ...
Virgo constellation
... discovered. RA12h 29m 46.7s . DEC+08° 00′ 02″. (wikipedia.com) Then we have the M58 it was discovered in 1779 which is a barred spiral galaxy, type SAB(rs)b; LINER Sy1.9. M58 has a low luminosity active galactic nucleus, where a starburst may be present as well as a supermassive black hole. It is al ...
... discovered. RA12h 29m 46.7s . DEC+08° 00′ 02″. (wikipedia.com) Then we have the M58 it was discovered in 1779 which is a barred spiral galaxy, type SAB(rs)b; LINER Sy1.9. M58 has a low luminosity active galactic nucleus, where a starburst may be present as well as a supermassive black hole. It is al ...
Constellations - Brown University Wiki
... expected, by making a sketch of the rotating and orbiting earth. b) Rotate the disc from midnight January 1 forward, to later hours (a.m.) Notice that the stars seem to rotate counter clockwise around Polaris, some rise in the East and set in the West. Explain this, knowing that the earth rotates fr ...
... expected, by making a sketch of the rotating and orbiting earth. b) Rotate the disc from midnight January 1 forward, to later hours (a.m.) Notice that the stars seem to rotate counter clockwise around Polaris, some rise in the East and set in the West. Explain this, knowing that the earth rotates fr ...
What is a star?
... How is star brightness measured? • Astronomers used telescopes see many stars that are too dim to see with the unaided eye. They added to the magnitude system. • Today, the brightest stars have a magnitude of about –2, and the faintest stars that we can see with a telescope have a magnitude of +30. ...
... How is star brightness measured? • Astronomers used telescopes see many stars that are too dim to see with the unaided eye. They added to the magnitude system. • Today, the brightest stars have a magnitude of about –2, and the faintest stars that we can see with a telescope have a magnitude of +30. ...
Perseids meteor showers are looking good
... For instance: • The planet Venus is brighter than any star in our night sky. It’s magnitude ranges from -3.8 to -4.6m. • Jupiter is also pretty bright. It’s magnitude ranges from -2.46 to -2.94m • The moon is the brightest object in our night sky. When full it has an apparent magnitude of -12.74m Th ...
... For instance: • The planet Venus is brighter than any star in our night sky. It’s magnitude ranges from -3.8 to -4.6m. • Jupiter is also pretty bright. It’s magnitude ranges from -2.46 to -2.94m • The moon is the brightest object in our night sky. When full it has an apparent magnitude of -12.74m Th ...
The Ursa Major Moving Cluster, Collinder 285
... Brighter stars known pre-historically. Cluster nature by R.A. Proctor 1869 and Huggins 1872 ...
... Brighter stars known pre-historically. Cluster nature by R.A. Proctor 1869 and Huggins 1872 ...
Astronomy Quiz 12 “Stars
... _____5. Stellar temperatures can be determined by comparing a star’s radiation curve to the ___. A. blackbody curve B. parallax curve C. sun D. Hertzprung thermometer _____6. Mass is the fuel for stellar fusion, so who do high-mass stars have such short lives? A. High mass causes stronger gravity, w ...
... _____5. Stellar temperatures can be determined by comparing a star’s radiation curve to the ___. A. blackbody curve B. parallax curve C. sun D. Hertzprung thermometer _____6. Mass is the fuel for stellar fusion, so who do high-mass stars have such short lives? A. High mass causes stronger gravity, w ...
File - greenscapes4you
... M-Sun star has 30 times more H than the Sun, but burns it with a luminosity that is 30,000 times greater. It’s lifetime is 30/30,000 = 1/10,000 as long as the Sun – corresponding to a lifetime of only a few million years. This is a very short time, cosmically speaking. This is one reason why massive ...
... M-Sun star has 30 times more H than the Sun, but burns it with a luminosity that is 30,000 times greater. It’s lifetime is 30/30,000 = 1/10,000 as long as the Sun – corresponding to a lifetime of only a few million years. This is a very short time, cosmically speaking. This is one reason why massive ...
Where do you find yourself now??
... Our galaxy is just one of thousands that lie within 100 million light years. The above map shows how galaxies tend to cluster into groups, the largest nearby cluster is the Virgo cluster a concentration of several hundred galaxies which dominates the galaxy groups around it. Collectively, all of the ...
... Our galaxy is just one of thousands that lie within 100 million light years. The above map shows how galaxies tend to cluster into groups, the largest nearby cluster is the Virgo cluster a concentration of several hundred galaxies which dominates the galaxy groups around it. Collectively, all of the ...
Stars and Light
... bright they looked to his eye. • Herschel (1800s) first measured the brightness of stars quantitatively and matched his measurements onto Ptolemy’s magnitude groups and assigned a number for the magnitude of each star. ...
... bright they looked to his eye. • Herschel (1800s) first measured the brightness of stars quantitatively and matched his measurements onto Ptolemy’s magnitude groups and assigned a number for the magnitude of each star. ...
Aries (constellation)
Aries is one of the constellations of the zodiac. It is located in the northern celestial hemisphere between Pisces to the west and Taurus to the east. The name Aries is Latin for ram, and its symbol is 20px (Unicode ♈), representing a ram's horns. It is one of the 48 constellations described by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations. It is a mid-sized constellation, ranking 39th overall size, with an area of 441 square degrees (1.1% of the celestial sphere).Although Aries came to represent specifically the ram whose fleece became the Golden Fleece of Ancient Greek mythology, it has represented a ram since late Babylonian times. Before that, the stars of Aries formed a farmhand. Different cultures have incorporated the stars of Aries into different constellations including twin inspectors in China and a porpoise in the Marshall Islands. Aries is a relatively dim constellation, possessing only four bright stars: Hamal (Alpha Arietis, second magnitude), Sheratan (Beta Arietis, third magnitude), Mesarthim (Gamma Arietis, fourth magnitude), and 41 Arietis (also fourth magnitude). The few deep-sky objects within the constellation are quite faint and include several pairs of interacting galaxies. Several meteor showers appear to radiate from Aries, including the Daytime Arietids and the Epsilon Arietids.