Luminosity
... These two stars have about the same luminosity -- which one appears brighter? A. Alpha Centauri B. The Sun ...
... These two stars have about the same luminosity -- which one appears brighter? A. Alpha Centauri B. The Sun ...
Exoplanets
... Humans have always wondered if life exists elsewhere in the universe. Such life could take many forms, including some very different from our own, but because we only have information about Earth-life (carbon-based organisms) we may as well start by looking for life like us. This means we can test n ...
... Humans have always wondered if life exists elsewhere in the universe. Such life could take many forms, including some very different from our own, but because we only have information about Earth-life (carbon-based organisms) we may as well start by looking for life like us. This means we can test n ...
D2 Stellar characteristics and stellar evolution
... Betelgeuse ("beetle juice"), a red supergiant star about 600 light years distant - one of the brightest stars in the familiar constellation of Orion, the Hunter - the first direct picture of the surface of a star other than the Sun. While Betelgeuse is cooler than the Sun, it is more massive and ove ...
... Betelgeuse ("beetle juice"), a red supergiant star about 600 light years distant - one of the brightest stars in the familiar constellation of Orion, the Hunter - the first direct picture of the surface of a star other than the Sun. While Betelgeuse is cooler than the Sun, it is more massive and ove ...
The Solar System Interplanetary Matter and the Birth of the Planets
... •Most asteroids are in orbit around the Sun in what it is called the Asteroid belt between the orbits of Mars and Jupiter • About 2000 asteroids have orbits that cross Earth’s path. Called NEO, Near Earth Objects. • Some of these may come at distances < 0.05 AU from the Earth. The are called PHA’s ( ...
... •Most asteroids are in orbit around the Sun in what it is called the Asteroid belt between the orbits of Mars and Jupiter • About 2000 asteroids have orbits that cross Earth’s path. Called NEO, Near Earth Objects. • Some of these may come at distances < 0.05 AU from the Earth. The are called PHA’s ( ...
Stars - Mike Brotherton
... Example: Polaris has just about the same spectral type (and thus surface temperature) as our sun, but it is 10,000 times brighter than our sun. Thus, Polaris is 100 times larger than the sun. This causes its luminosity to be 1002 = 10,000 ...
... Example: Polaris has just about the same spectral type (and thus surface temperature) as our sun, but it is 10,000 times brighter than our sun. Thus, Polaris is 100 times larger than the sun. This causes its luminosity to be 1002 = 10,000 ...
Evan_Skillman_1
... cores are no longer on the main sequence. • All stars become larger and redder after exhausting their core hydrogen: giants and ...
... cores are no longer on the main sequence. • All stars become larger and redder after exhausting their core hydrogen: giants and ...
of the Sun
... • The density of energy was so great that matter could not exist. • As the density was gradually reduced through expansion, matter began to form. • Both matter and anti-matter formed, but for some reason, there was a slight excess of matter. ...
... • The density of energy was so great that matter could not exist. • As the density was gradually reduced through expansion, matter began to form. • Both matter and anti-matter formed, but for some reason, there was a slight excess of matter. ...
File
... The collapsing core of neutrons overshoots its equilibrium size and rebounds outward, like someone jumping on a trampoline. The rebounding core collides with the inward-falling surrounding layers and propels them outward, greatly assisted by the plentiful neutrinos (only a very tiny fraction of whic ...
... The collapsing core of neutrons overshoots its equilibrium size and rebounds outward, like someone jumping on a trampoline. The rebounding core collides with the inward-falling surrounding layers and propels them outward, greatly assisted by the plentiful neutrinos (only a very tiny fraction of whic ...
Death of Stars notes
... explosions called supernovae, the chemical elements forged in the stars’ interiors-and created in the heat and pressure of the explosion--are released into space as a debris cloud of hot gas and dust. • Scientists had evidence of such dust formation, but couldn’t be sure that the dust wasn’t destroy ...
... explosions called supernovae, the chemical elements forged in the stars’ interiors-and created in the heat and pressure of the explosion--are released into space as a debris cloud of hot gas and dust. • Scientists had evidence of such dust formation, but couldn’t be sure that the dust wasn’t destroy ...
Types of Stars http://space.about.com/od/stars/tp/What-Are
... Most stars we see in the night sky maintain a constant brightness (the twinkling we sometimes see is actually an atmospheric effect and not a variation of the star), but some stars actually do vary. While some stars owe their variation to their rotation (like rotating neutron stars, called pulsars) ...
... Most stars we see in the night sky maintain a constant brightness (the twinkling we sometimes see is actually an atmospheric effect and not a variation of the star), but some stars actually do vary. While some stars owe their variation to their rotation (like rotating neutron stars, called pulsars) ...
The Family of Stars
... Binary Stars More than 50 % of all stars in our Milky Way are not single stars, but belong to binaries: Pairs or multiple systems of stars which orbit their common center of mass. If we can measure and understand their orbital motion, we can estimate the stellar ...
... Binary Stars More than 50 % of all stars in our Milky Way are not single stars, but belong to binaries: Pairs or multiple systems of stars which orbit their common center of mass. If we can measure and understand their orbital motion, we can estimate the stellar ...
20_LectureOutline
... All stars lose mass via some form of stellar wind. The most massive stars have the strongest winds; O- and B-type stars can lose a tenth of their total mass this way in only a million years. These stellar winds hollow out cavities in the interstellar medium surrounding giant stars. ...
... All stars lose mass via some form of stellar wind. The most massive stars have the strongest winds; O- and B-type stars can lose a tenth of their total mass this way in only a million years. These stellar winds hollow out cavities in the interstellar medium surrounding giant stars. ...
White Dwarfs - University of Maryland Astronomy
... Neutron degeneracy pressure can no longer support a neutron star against gravity if its mass exceeds about 3 MSun. So what happens in that case?… ...
... Neutron degeneracy pressure can no longer support a neutron star against gravity if its mass exceeds about 3 MSun. So what happens in that case?… ...
