Spectral Classification
... B stars are extremely luminous and blue. As O and B stars are so powerful, they live for a very short time. They do not stray far from the area in which they were formed as they don't have the time. They therefore tend to cluster together in what we call OB1 associations. and contains all of the con ...
... B stars are extremely luminous and blue. As O and B stars are so powerful, they live for a very short time. They do not stray far from the area in which they were formed as they don't have the time. They therefore tend to cluster together in what we call OB1 associations. and contains all of the con ...
Fulltext PDF - Indian Academy of Sciences
... astronomical unit = the mean distance of the Earth from Sun = 150 million kms.), with masses 1.1 M0 and 0.9 M 0 . The third component, Proxima Centauri orbits around the center of mass (of A and B) at a distance of about 10,000 AU with a mass of ...
... astronomical unit = the mean distance of the Earth from Sun = 150 million kms.), with masses 1.1 M0 and 0.9 M 0 . The third component, Proxima Centauri orbits around the center of mass (of A and B) at a distance of about 10,000 AU with a mass of ...
Basic Properties of Stars
... Note: T increases to left and bright stars at the top. Band upper left to lower right is called the Main Sequence. It contains 8090% of all stars. White dwarfs at lower left. ...
... Note: T increases to left and bright stars at the top. Band upper left to lower right is called the Main Sequence. It contains 8090% of all stars. White dwarfs at lower left. ...
Be Stars
... Finally, there are Be stars that show a prominent emission spectrum of hydrogen this is because they have a rapid rate of rotation, with an equatorial rotation velocity of about 200km/s, which in relation to the suns rotation of about 2 km/s is very fast ...
... Finally, there are Be stars that show a prominent emission spectrum of hydrogen this is because they have a rapid rate of rotation, with an equatorial rotation velocity of about 200km/s, which in relation to the suns rotation of about 2 km/s is very fast ...
Mass Segregation in Globular Clusters
... processes achieve a balance, a stable structure appears. One feature that characterizes such a cluster is that all its members should have approximately the same kinetic energy. For less massive stars, this means that on average, their velocities should be higher by a specific and measurable amount. ...
... processes achieve a balance, a stable structure appears. One feature that characterizes such a cluster is that all its members should have approximately the same kinetic energy. For less massive stars, this means that on average, their velocities should be higher by a specific and measurable amount. ...
Rogava_Course_-_First_lecture
... Example: Mizar and Alcor in ‘Big Dipper’ (~0.25 light years apart). ...
... Example: Mizar and Alcor in ‘Big Dipper’ (~0.25 light years apart). ...
Binary Stars
... Either one of these possibilities suggests that stars would move along the main sequence, from top left to bottom right or vice versa. (It still leaves unresolved the status of the white dwarfs and red giants.) ...
... Either one of these possibilities suggests that stars would move along the main sequence, from top left to bottom right or vice versa. (It still leaves unresolved the status of the white dwarfs and red giants.) ...
The Star of Bethlehem: a Type Ia/Ic Supernova in the Andromeda
... there was a conjunction of Mars with the Sun. On this date, Venus was in Aries, and located at its rising almost exactly below M31 and only about 20 degrees in azimuth north of east at Babylon. Venus on that day rose shortly after dawn, and had magnitude −4.2, so it would be visible after sunrise. O ...
... there was a conjunction of Mars with the Sun. On this date, Venus was in Aries, and located at its rising almost exactly below M31 and only about 20 degrees in azimuth north of east at Babylon. Venus on that day rose shortly after dawn, and had magnitude −4.2, so it would be visible after sunrise. O ...
Hertzsprung-Russell Diagram—key to understanding properties of stars. 26 Sept
... – A show highlighting the current sky, spectacular gatherings of Venus with the moon and other planets in coming months. See what Galileo saw through his telescope 400 years ago— the Milky Way and the Pleiades, details on the moon, the four moons of Jupiter, the phases of Venus, and the mysterious d ...
... – A show highlighting the current sky, spectacular gatherings of Venus with the moon and other planets in coming months. See what Galileo saw through his telescope 400 years ago— the Milky Way and the Pleiades, details on the moon, the four moons of Jupiter, the phases of Venus, and the mysterious d ...
magnitude handout
... How do we use this table? The magnitude difference between two stars along with Table 2 gives us the brightness ratio, how many times brighter the star is. We can also work the other way. Thus if star A is 40 times brighter than star B, the table tells us that A is 4 magnitudes brighter. It is prett ...
... How do we use this table? The magnitude difference between two stars along with Table 2 gives us the brightness ratio, how many times brighter the star is. We can also work the other way. Thus if star A is 40 times brighter than star B, the table tells us that A is 4 magnitudes brighter. It is prett ...
Brock physics - Brock University
... (d) [It depends on the whims of the head office of ProtoStar Inc.] 11. A brown dwarf is (a) a character in the Disney movie Snow White and the Dwarf Stars. (b) a white dwarf that has cooled near the end of its life. (c) a red dwarf that has cooled near the end of its life. (d) * a protostar that nev ...
... (d) [It depends on the whims of the head office of ProtoStar Inc.] 11. A brown dwarf is (a) a character in the Disney movie Snow White and the Dwarf Stars. (b) a white dwarf that has cooled near the end of its life. (c) a red dwarf that has cooled near the end of its life. (d) * a protostar that nev ...
Naked Eye, Binocular, or Small Backyard Telescope Night Sky
... the Big Dipper (Ursa Major), which can be resolvable by eye in dark sights if you have very good eye sight, but they are certainly resolvable with binoculars. When pointing a telescope at ...
... the Big Dipper (Ursa Major), which can be resolvable by eye in dark sights if you have very good eye sight, but they are certainly resolvable with binoculars. When pointing a telescope at ...
What is a Hertzsprung
... found in the galactic halo with some in the disk, some of the oldest objects found in the galaxy. ...
... found in the galactic halo with some in the disk, some of the oldest objects found in the galaxy. ...
31-2 - Fremont Peak Observatory
... their far southern location on the celestial sphere, one should consider this tour to be through the back roads of Scorpius. One can begin this tour of Scorpius at the “Cat’s Eyes.” The Cat’s Eyes, λ and υ-Scorpii, are located at the Scorpion’s stinger on the tail of the scorpion. Lambda-Scorpii, Sh ...
... their far southern location on the celestial sphere, one should consider this tour to be through the back roads of Scorpius. One can begin this tour of Scorpius at the “Cat’s Eyes.” The Cat’s Eyes, λ and υ-Scorpii, are located at the Scorpion’s stinger on the tail of the scorpion. Lambda-Scorpii, Sh ...
Announcements Evolution of High-Mass Stars: Red Supergiants
... • Parallax only works for nearby stars (within about 1000 light years) • For more distant stars, we use Standard Candles Car Headlights are standard candles: We use them to determine the car’s distance ...
... • Parallax only works for nearby stars (within about 1000 light years) • For more distant stars, we use Standard Candles Car Headlights are standard candles: We use them to determine the car’s distance ...
Stellar Evolution
... After the helium flash, the radius decreases, but the star remains a giant on the horizontal branch. As the helium in the core fuses to carbon, the core becomes hotter and hotter, and the helium burns faster and faster. When the helium is exhausted, the star is now similar to its condition jus ...
... After the helium flash, the radius decreases, but the star remains a giant on the horizontal branch. As the helium in the core fuses to carbon, the core becomes hotter and hotter, and the helium burns faster and faster. When the helium is exhausted, the star is now similar to its condition jus ...
Auriga (constellation)
Auriga is one of the 48 constellations listed by the 2nd-century astronomer Ptolemy and remains one of the 88 modern constellations. Located north of the celestial equator, its name is the Latin word for ""charioteer"", associating it with various mythological charioteers, including Erichthonius and Myrtilus. Auriga is most prominent during winter evenings in the Northern Hemisphere, along with the five other constellations that have stars in the Winter Hexagon asterism. Because of its northern declination, Auriga is only visible in its entirety as far as 34° south; for observers farther south it lies partially or fully below the horizon. A large constellation, with an area of 657 square degrees, it is half the size of the largest constellation, Hydra.Its brightest star, Capella, is an unusual multiple star system among the brightest stars in the night sky. Beta Aurigae is an interesting variable star in the constellation; Epsilon Aurigae, a nearby eclipsing binary with an unusually long period, has been studied intensively. Because of its position near the winter Milky Way, Auriga has many bright open clusters in its borders, including M36, M37, and M38, popular targets for amateur astronomers. In addition, it has one prominent nebula, the Flaming Star Nebula, associated with the variable star AE Aurigae.In Chinese mythology, Auriga's stars were incorporated into several constellations, including the celestial emperors' chariots, made up of the modern constellation's brightest stars. Auriga is home to the radiant for the Aurigids, Zeta Aurigids, Delta Aurigids, and the hypothesized Iota Aurigids.