Astronomy Library wk 6.cwk (WP)
... Examples of the peak intensity wavelengths: The sun (6000K): λmax = ? Cool star (3000K): λmax = ? ...
... Examples of the peak intensity wavelengths: The sun (6000K): λmax = ? Cool star (3000K): λmax = ? ...
Astronomy Activity: The Life-Line of the Stars
... very faintest stars visible with the naked eye, magnitude 6 stars*. All stars are not the same distance away. Obviously, a star which is far away will appear dimmer than a similar star which is closer. We adjust for the distance of stars by giving stars an absolute brightness . The absolute magnitud ...
... very faintest stars visible with the naked eye, magnitude 6 stars*. All stars are not the same distance away. Obviously, a star which is far away will appear dimmer than a similar star which is closer. We adjust for the distance of stars by giving stars an absolute brightness . The absolute magnitud ...
Magnitudes and Colours of Stars - Lincoln
... 3. When both mv and the distance are known, the absolute visual magnitude Mv is calculated. ...
... 3. When both mv and the distance are known, the absolute visual magnitude Mv is calculated. ...
Lecture (Powerpoint)
... the mass of the Sun, or ~80 Jupiter masses) never ``turn on'' Central temperatures never get hot enough for nuclear burning to begin in earnest Nuclear burning is what powers the star through its life Star sits around as a brown dwarf – too big and hot to be a planet, too small and cold to be a real ...
... the mass of the Sun, or ~80 Jupiter masses) never ``turn on'' Central temperatures never get hot enough for nuclear burning to begin in earnest Nuclear burning is what powers the star through its life Star sits around as a brown dwarf – too big and hot to be a planet, too small and cold to be a real ...
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 ...
description
... zenith appear high, near the top of the sky (middle of the circle on the Star Map). Celestial sphere = giant imaginary sphere that surrounds Earth. Stars & constellations appear to be attached to this imaginary sphere. Little Dipper = shaped like a small ladle or spoon. The end star of the Littl ...
... zenith appear high, near the top of the sky (middle of the circle on the Star Map). Celestial sphere = giant imaginary sphere that surrounds Earth. Stars & constellations appear to be attached to this imaginary sphere. Little Dipper = shaped like a small ladle or spoon. The end star of the Littl ...
Picture Match Words Valence Nebula Supernova Pulsar Attract
... 4. A_____________________—with gravity so strong that light cannot get out of it—appears to suck in objects orbiting or approaching close to it. 5. When atoms of chlorine and sodium_____________________, they form salt. ...
... 4. A_____________________—with gravity so strong that light cannot get out of it—appears to suck in objects orbiting or approaching close to it. 5. When atoms of chlorine and sodium_____________________, they form salt. ...
The Magnitude Scale
... are not "exact", in that celestial objects are often measured to a precision or 0.1 or 0.01 magnitude; for example, Sirius shines at V = -1.47 (Yale Bright Star Catalogue), and the planet Venus varies in brightness generally from magnitude -4.5 to -3.7. Note that a comet of magnitude 5 will not be a ...
... are not "exact", in that celestial objects are often measured to a precision or 0.1 or 0.01 magnitude; for example, Sirius shines at V = -1.47 (Yale Bright Star Catalogue), and the planet Venus varies in brightness generally from magnitude -4.5 to -3.7. Note that a comet of magnitude 5 will not be a ...
october 2008 - Mahoning Valley Astronomical Society
... try for the brightest-- go for G1. Also known as Mayall II or Andromeda's Globular, it was discovered in 1953 by the astronomers Nicholas Mayall and Olin J. Eggen. G1 consists of 300,000 to 1 million old stars. It lies about 130,000 light years away from its home galaxy M31. From our perspective thi ...
... try for the brightest-- go for G1. Also known as Mayall II or Andromeda's Globular, it was discovered in 1953 by the astronomers Nicholas Mayall and Olin J. Eggen. G1 consists of 300,000 to 1 million old stars. It lies about 130,000 light years away from its home galaxy M31. From our perspective thi ...
Today`s Powerpoint
... temperature from spectrum (black-body curve or spectral lines), then find surface area, then find radius (sphere surface area is 4 p R2) ...
... temperature from spectrum (black-body curve or spectral lines), then find surface area, then find radius (sphere surface area is 4 p R2) ...
The Galaxy Presentation 2011
... - More active than halo; typifies much of galactic disk - Within 33 l.y. (10 pc) are over 300 stars - Most are dim, red type M - A few (Sirius, Vega, Altair, Fomalhaut) are bright, white stars younger than Sun - No very massive, short-lived stars (type O or B) - We are in a quiet “suburb,” but it wa ...
... - More active than halo; typifies much of galactic disk - Within 33 l.y. (10 pc) are over 300 stars - Most are dim, red type M - A few (Sirius, Vega, Altair, Fomalhaut) are bright, white stars younger than Sun - No very massive, short-lived stars (type O or B) - We are in a quiet “suburb,” but it wa ...
Cassiopeia (constellation)
Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty. Cassiopeia was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy, and it remains one of the 88 modern constellations today. It is easily recognizable due to its distinctive 'M' shape when in upper culmination but in higher northern locations when near lower culminations in spring and summer it has a 'W' shape, formed by five bright stars. It is bordered by Andromeda to the south, Perseus to the southeast, and Cepheus to the north. It is opposite the Big Dipper.In northern locations above 34ºN latitude it is visible year-round and in the (sub)tropics it can be seen at its clearest from September to early November in its characteristic 'M' shape. Even in low southern latitudes below 25ºS is can be seen low in the North.