WEST ORANGE PUBLIC SCHOOLS
... Earth rotates by spinning on its axis. One rotation takes 24 hours. Earth revolves (or orbits) around the Sun. One revolution takes about 365 days. A period of revolution is the time it takes a moon or planet to make one complete orbit. 2. What causes the apparent movement of the sun across the sky ...
... Earth rotates by spinning on its axis. One rotation takes 24 hours. Earth revolves (or orbits) around the Sun. One revolution takes about 365 days. A period of revolution is the time it takes a moon or planet to make one complete orbit. 2. What causes the apparent movement of the sun across the sky ...
Stellar Remnants
... • Rotating neutron stars • An object as big as the Sun with a onemonth rotation period will rotate more than 1000 times a second if squeezed down to the size of a neutron star – This happens when a massive star’s iron core ...
... • Rotating neutron stars • An object as big as the Sun with a onemonth rotation period will rotate more than 1000 times a second if squeezed down to the size of a neutron star – This happens when a massive star’s iron core ...
HighRedshiftGalaxies
... In addition to the scatter arising from extinction (accounted for via individual Balmer emission line decrements), somebody suggests that some fraction of their UV-selected population must be suffering star formation which is erratic in its time history. In such a situation, different diagnostics wi ...
... In addition to the scatter arising from extinction (accounted for via individual Balmer emission line decrements), somebody suggests that some fraction of their UV-selected population must be suffering star formation which is erratic in its time history. In such a situation, different diagnostics wi ...
the stars - Uni Heidelberg
... parameters temperature and luminosity. By selecting stars on the sky you build the Herzsprung-Russell diagram that shows the relation between color and magnitude, a milestone in the history of our understanding of how stars work and evolve. If used in the classroom, the meaning of temperature, color ...
... parameters temperature and luminosity. By selecting stars on the sky you build the Herzsprung-Russell diagram that shows the relation between color and magnitude, a milestone in the history of our understanding of how stars work and evolve. If used in the classroom, the meaning of temperature, color ...
THE STARS G. Iafrate(a), M. Ramella(a) and V. Bologna(b) (a) INAF
... luminosity but low temperature. The white dwarfs, that are very hot but small, lie in the lower left corner of the diagram. Stellar evolution Stars are big spheres of gas (if the planet Earth is a grain of sand, a medium size star is a ball of 1 meter diameter). Stars produce energy by nuclear fusio ...
... luminosity but low temperature. The white dwarfs, that are very hot but small, lie in the lower left corner of the diagram. Stellar evolution Stars are big spheres of gas (if the planet Earth is a grain of sand, a medium size star is a ball of 1 meter diameter). Stars produce energy by nuclear fusio ...
astronomy review - Earth Science R: 1(A,C)
... Planets have a greater gravitational attraction to the sun when they are __________________ to the sun Planets move faster in their orbits when they are ________________ to the sun ...
... Planets have a greater gravitational attraction to the sun when they are __________________ to the sun Planets move faster in their orbits when they are ________________ to the sun ...
Astronomy Exam #4
... 26. An O star is known to be eight times the temperature of the Sun and fivr times its radius. What is its luminosity? You may answer either in Watts or in units of solar luminosity. Note: the radius of the Sun is 696,000 km and the temperature of the Sun is 5,800 K. ...
... 26. An O star is known to be eight times the temperature of the Sun and fivr times its radius. What is its luminosity? You may answer either in Watts or in units of solar luminosity. Note: the radius of the Sun is 696,000 km and the temperature of the Sun is 5,800 K. ...
constellations - Otterbein University
... - constellation shapes and names - star names and position in constellation - deep sky objects’ names and position • Quiz: You will be asked to find these objects on a star map. ...
... - constellation shapes and names - star names and position in constellation - deep sky objects’ names and position • Quiz: You will be asked to find these objects on a star map. ...
Stars through the year
... star patterns that you see in, say, June will be different from those that you see at the same time and looking in the same direction from the same place when looking in December. This movement is due to the movement of the Earth round the Sun – taking one year to complete one orbit. Choose a bright ...
... star patterns that you see in, say, June will be different from those that you see at the same time and looking in the same direction from the same place when looking in December. This movement is due to the movement of the Earth round the Sun – taking one year to complete one orbit. Choose a bright ...
Stellar Magnitudes and Distances
... • A star’s apparent magnitude (m) is how bright it appears at the earth’s surface. • A star’s absolute magnitude (M) is how bright it appears from a standard reference distance of 10 pc or 32.6 LY. • Since a star’s distance from the earth affects its apparent brightness, astronomers compare the brig ...
... • A star’s apparent magnitude (m) is how bright it appears at the earth’s surface. • A star’s absolute magnitude (M) is how bright it appears from a standard reference distance of 10 pc or 32.6 LY. • Since a star’s distance from the earth affects its apparent brightness, astronomers compare the brig ...
Powerpoint of lecture 1
... (Handout 3) Much more variety, but all diagrams show • Dominant main sequence, of varying length • Some giant stars, in variable numbers If all main sequences are the same (i.e. have the same absolute magnitude at a given temperature), then can create a composite HR diagram (Handout 3) – plausible i ...
... (Handout 3) Much more variety, but all diagrams show • Dominant main sequence, of varying length • Some giant stars, in variable numbers If all main sequences are the same (i.e. have the same absolute magnitude at a given temperature), then can create a composite HR diagram (Handout 3) – plausible i ...
Luminosities and magnitudes of stars
... a measure of how big that object appears to an observer at that point. For instance, a small object nearby could subtend the same solid angle as a large object far away. The solid angle is proportional to the surface area, S, of a projection of that object onto a sphere centered at that point, divid ...
... a measure of how big that object appears to an observer at that point. For instance, a small object nearby could subtend the same solid angle as a large object far away. The solid angle is proportional to the surface area, S, of a projection of that object onto a sphere centered at that point, divid ...
answer key
... young—less than a few tens of millions of years old. At the opposite end of the main sequence, the cooler K and M type stars have less mass than our Sun. The small energy release per unit time leads to low luminosities for these stars, so they have very long lifetimes. Many of the K and M type stars ...
... young—less than a few tens of millions of years old. At the opposite end of the main sequence, the cooler K and M type stars have less mass than our Sun. The small energy release per unit time leads to low luminosities for these stars, so they have very long lifetimes. Many of the K and M type stars ...
The Sun, Stars, and Beyond
... • The most common is the elliptical galaxy, shaped sort of like a big egg. • There are spiral and barred spiral galaxies, • Irregularly shaped galaxies also exist, though fewer in number. • A galaxy’s shape is determined by its rate of spin, and if it has been subject to any collisions or mergers. • ...
... • The most common is the elliptical galaxy, shaped sort of like a big egg. • There are spiral and barred spiral galaxies, • Irregularly shaped galaxies also exist, though fewer in number. • A galaxy’s shape is determined by its rate of spin, and if it has been subject to any collisions or mergers. • ...
May 8, 2012 - Plummer Pumas Science
... developed a system for describing distances in our Solar System based on the average distance between the Earth and the Sun. The Astronomical Unit (AU) is approximately 149,570,000 kilometers (the average Sun-Earth distance). The distances between objects in our Solar System are measured using the A ...
... developed a system for describing distances in our Solar System based on the average distance between the Earth and the Sun. The Astronomical Unit (AU) is approximately 149,570,000 kilometers (the average Sun-Earth distance). The distances between objects in our Solar System are measured using the A ...
Stars and Stellar Evolution
... clue to star’s temperature Very hot (above 30,000 K) = blue Cooler = red In-between (50006000 K) = yellow ...
... clue to star’s temperature Very hot (above 30,000 K) = blue Cooler = red In-between (50006000 K) = yellow ...
Search for Student Research Assistant
... (other than the Sun). Of the two stars, one is a normal star, slightly less massive than our own Sun, but the other is a neutron star (a collapsed star only about 10 km across). Sco X-1 was the first discovered star system of its type. It is particularly interesting because although it has a neutron ...
... (other than the Sun). Of the two stars, one is a normal star, slightly less massive than our own Sun, but the other is a neutron star (a collapsed star only about 10 km across). Sco X-1 was the first discovered star system of its type. It is particularly interesting because although it has a neutron ...
V Example: our SUN (G2V)
... A supernova occurs when the core of the massive star collapses and a shock wave rips the star apart, usually leaving behind a neutron star. Supernovae can also be produced when enough material is deposited on a white dwarf so that is exceeds the Chandrasekhar limit and collapses to a neutron star. B ...
... A supernova occurs when the core of the massive star collapses and a shock wave rips the star apart, usually leaving behind a neutron star. Supernovae can also be produced when enough material is deposited on a white dwarf so that is exceeds the Chandrasekhar limit and collapses to a neutron star. B ...
The Central Star of A63 – UU Sge Don Pollacco, Ralf
... UU Sge is unique amongst central star in that it is a totally eclipsing binary. Hence physical parameters for the components can be derived, in principle, with great accuracy. The morphology of A63 is extreme, exhibiting an aspect ratio of some 7:1! ...
... UU Sge is unique amongst central star in that it is a totally eclipsing binary. Hence physical parameters for the components can be derived, in principle, with great accuracy. The morphology of A63 is extreme, exhibiting an aspect ratio of some 7:1! ...
Corvus (constellation)
Corvus is a small constellation in the Southern Celestial Hemisphere. Its name comes from the Latin word ""raven"" or ""crow"". It includes only 11 stars with brighter than 4.02 magnitudes. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The four brightest stars, Gamma, Delta, Epsilon, and Beta Corvi from a distinctive quadrilateral in the night sky. The young star Eta Corvi has been found to have two debris disks.