chapter8
... intrinsic brightness or luminosity (L) and inversely proportional to the square of the distance (d): L ...
... intrinsic brightness or luminosity (L) and inversely proportional to the square of the distance (d): L ...
What is your real star sign - student brief
... “circle of animals” with sticky tape. Use the astronomical Zodiac. They need to be in the correct order as they are in the sky, with the stars facing inwards. You will notice that there are 13 constellations rather than 12, as the Babylonians left out the constellation Ophiuchus (the snake carrier). ...
... “circle of animals” with sticky tape. Use the astronomical Zodiac. They need to be in the correct order as they are in the sky, with the stars facing inwards. You will notice that there are 13 constellations rather than 12, as the Babylonians left out the constellation Ophiuchus (the snake carrier). ...
Notes_ stars and sun
... • Astronomers studying the sky sometimes see these clouds and mistake them for galaxies. • Nebulae come in a variety of shapes and sizes. Some are named because of the shape that they form. • These clouds gradually shrink as gravity pulls the dust and gas together. • At the center, the gas gets ...
... • Astronomers studying the sky sometimes see these clouds and mistake them for galaxies. • Nebulae come in a variety of shapes and sizes. Some are named because of the shape that they form. • These clouds gradually shrink as gravity pulls the dust and gas together. • At the center, the gas gets ...
Astronomy 1 – Winter 2011
... Colors and spectral types measure a star’s temperature The Hertzsprung-Russell (H-R) diagram is a graph plotting luminosity vs temperature • Most stars belong to the main sequence. Other important classes are giants, supergiants and white dwarfs. • Spectral typing can be used to determine distance ...
... Colors and spectral types measure a star’s temperature The Hertzsprung-Russell (H-R) diagram is a graph plotting luminosity vs temperature • Most stars belong to the main sequence. Other important classes are giants, supergiants and white dwarfs. • Spectral typing can be used to determine distance ...
Document
... the same time. • The cluster is as old as the most luminous (massive) star left on the MS. • All MS stars to the left have already used up their H fuel and are gone. • The position of the hottest, brightest star on a cluster’s main sequence is called the main sequence turnoff point. ...
... the same time. • The cluster is as old as the most luminous (massive) star left on the MS. • All MS stars to the left have already used up their H fuel and are gone. • The position of the hottest, brightest star on a cluster’s main sequence is called the main sequence turnoff point. ...
Word doc - UC-HiPACC - University of California, Santa Cruz
... common set of genes,” said Mark Krumholz, associate professor at University of California, Santa Cruz. The pattern of abundances, set at birth, is consistent regardless of an individual star’s spectral type. But most stellar families don’t stay together: stars don’t form fast enough for them to rema ...
... common set of genes,” said Mark Krumholz, associate professor at University of California, Santa Cruz. The pattern of abundances, set at birth, is consistent regardless of an individual star’s spectral type. But most stellar families don’t stay together: stars don’t form fast enough for them to rema ...
8.1 Stars
... neutrons only about 15 km across, it is called a neutron star. Neutron stars are made of the densest material known ...
... neutrons only about 15 km across, it is called a neutron star. Neutron stars are made of the densest material known ...
The Magnitude scale
... To factor out the distance effect in apparent magnitudes (m) we define the absolute magnitude M as - the magnitude a star would have if we put it at a standard distance of 10 pc. In terms of apparent luminosity l, and absolute luminosity L, we have, ...
... To factor out the distance effect in apparent magnitudes (m) we define the absolute magnitude M as - the magnitude a star would have if we put it at a standard distance of 10 pc. In terms of apparent luminosity l, and absolute luminosity L, we have, ...
Test 2, Nov. 17, 2015 - Physics@Brock
... (d) 25 times. 15. Star S radiates most energy at 400 nanometers and star U radiates most energy at 700 nanometers. From this we can conclude that (a) star S has hotter surface than star U. (b) star S has colder surface than star U. (c) both stars have the same surface temperature. (d) [No comparison ...
... (d) 25 times. 15. Star S radiates most energy at 400 nanometers and star U radiates most energy at 700 nanometers. From this we can conclude that (a) star S has hotter surface than star U. (b) star S has colder surface than star U. (c) both stars have the same surface temperature. (d) [No comparison ...
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.