1st Semester Earth Science Review 2014-15
... ____ 50. By analyzing the light that a star emits, astronomers can determine a. the motion of a star. b. the composition and temperature of a star. c. the size and weight of a star. d. the galaxy that the star belongs to. ____ 51. Circumpolar stars in the Northern Hemisphere appear to circle a. the ...
... ____ 50. By analyzing the light that a star emits, astronomers can determine a. the motion of a star. b. the composition and temperature of a star. c. the size and weight of a star. d. the galaxy that the star belongs to. ____ 51. Circumpolar stars in the Northern Hemisphere appear to circle a. the ...
Astron 104 Laboratory #9 Cepheid Variable Stars
... receive on Earth (i.e., how bright do we measure the star to be). • The absolute magnitude of the star, which is a measure of how much light it is actually radiating into space (i.e, how bright it actually is). • The star’s distance from us. In principle, if we know the first two of these quantities ...
... receive on Earth (i.e., how bright do we measure the star to be). • The absolute magnitude of the star, which is a measure of how much light it is actually radiating into space (i.e, how bright it actually is). • The star’s distance from us. In principle, if we know the first two of these quantities ...
Slide 1
... nearly the speed of light, live in our Milky Way galaxy. The energetic microquasar systems seem to consist of a very compact object, either a neutron star or a black hole, formed in a supernova explosion but still co-orbiting with an otherwise normal star. Using a very long array of radio telescopes ...
... nearly the speed of light, live in our Milky Way galaxy. The energetic microquasar systems seem to consist of a very compact object, either a neutron star or a black hole, formed in a supernova explosion but still co-orbiting with an otherwise normal star. Using a very long array of radio telescopes ...
Astronomy Assignment #1
... question is 9 times the radius of the Sun. A note is worthy here: We expected this star to be larger because it was the same temperature as the Sun, by quite a bit more luminous. What this problem is trying to illustrate, is the luminosity depends on the square of the stellar radius, not just on the ...
... question is 9 times the radius of the Sun. A note is worthy here: We expected this star to be larger because it was the same temperature as the Sun, by quite a bit more luminous. What this problem is trying to illustrate, is the luminosity depends on the square of the stellar radius, not just on the ...
TTh HW06 key
... far. Choose the correct response from those listed, along with at least a one (1) sentence justification for your answer. Alternate justification techniques include math calculations and labeled sketches. Each question is worth 5 points: 2 for the letter response and 3 for the justification. Collabo ...
... far. Choose the correct response from those listed, along with at least a one (1) sentence justification for your answer. Alternate justification techniques include math calculations and labeled sketches. Each question is worth 5 points: 2 for the letter response and 3 for the justification. Collabo ...
Honors Physics – Ch 7 Practice Problems
... 4. The passenger liners Carnival Destiny and Grand Princess, built recently, have a mass of about 1.0 × 108 kg each. How far apart must these two ships be to exert a gravitational attraction of 1.0 × 10-3 N on each other? 5. Jupiter, the largest planet in the solar system, has a mass 318 times that ...
... 4. The passenger liners Carnival Destiny and Grand Princess, built recently, have a mass of about 1.0 × 108 kg each. How far apart must these two ships be to exert a gravitational attraction of 1.0 × 10-3 N on each other? 5. Jupiter, the largest planet in the solar system, has a mass 318 times that ...
January SKY Newsletter 2012
... then reverse direction and wind up back in Leo by early February. This change in position illustrates the retrograde motion of Mars. January is an excellent time to view Mars through a telescope if you want to see the north polar cap and possibly some surface markings. This is also a good time to vi ...
... then reverse direction and wind up back in Leo by early February. This change in position illustrates the retrograde motion of Mars. January is an excellent time to view Mars through a telescope if you want to see the north polar cap and possibly some surface markings. This is also a good time to vi ...
Lecture 8: The Stars - Department of Physics and Astronomy
... Out to a distance of 4 pc, 12 light, from the Sun, there are 30 stars. The brightest is Sirius, which can be seen in the night sky. Only 10 are bright enough to see with the naked eye. The rest have been discovered through telescopic surveys of the sky. ...
... Out to a distance of 4 pc, 12 light, from the Sun, there are 30 stars. The brightest is Sirius, which can be seen in the night sky. Only 10 are bright enough to see with the naked eye. The rest have been discovered through telescopic surveys of the sky. ...
H-R Diagram
... H-R diagram – a graphical plot showing the relationship between a star’s luminosity and its surface temperature. o ...
... H-R diagram – a graphical plot showing the relationship between a star’s luminosity and its surface temperature. o ...
More detailed notes - Particle Physics and Particle Astrophysics
... In this table, Menv is the mass of the envelope of gas and dust surrounding the young star, and Mdisc is the mass of the circumstellar disc. Hα is a spectral line of hydrogen: Hα emission is a sign of the presence of ionised hydrogen. Heavily obscured, very young objects (Class 0) aren’t really reco ...
... In this table, Menv is the mass of the envelope of gas and dust surrounding the young star, and Mdisc is the mass of the circumstellar disc. Hα is a spectral line of hydrogen: Hα emission is a sign of the presence of ionised hydrogen. Heavily obscured, very young objects (Class 0) aren’t really reco ...
Closed books and notes, 1 hour. Please PRINT
... Ultraviolet, X-rays, visible, infrared, radio X-rays, visible, ultraviolet, infrared, radio Ultraviolet, X-rays, visible, radio, infrared X-rays, ultraviolet, visible, infrared, radio Radio, infrared, visible, X-rays, ultraviolet ...
... Ultraviolet, X-rays, visible, infrared, radio X-rays, visible, ultraviolet, infrared, radio Ultraviolet, X-rays, visible, radio, infrared X-rays, ultraviolet, visible, infrared, radio Radio, infrared, visible, X-rays, ultraviolet ...
globular cluster - Harding University
... Determine our Place in the Milky Way Shapley made use of RR Lyra variable stars found in many globular clusters to determine the distances to these clusters. RR Lyra variables, like the Cepheid variables also have a period – luminosity relationship. By measuring the distances to, and the relativ ...
... Determine our Place in the Milky Way Shapley made use of RR Lyra variable stars found in many globular clusters to determine the distances to these clusters. RR Lyra variables, like the Cepheid variables also have a period – luminosity relationship. By measuring the distances to, and the relativ ...
The All-Seeing, All-Magnifying Eye
... The brightening can be up to about one magnitude -- the star becomes about 3 times brighter. So far, to date, finding this “flash” is the only technique (other than photometric transits or pulsar-timing) by which we can detect terrestrial-type planets around Sunlike stars or close double-star system ...
... The brightening can be up to about one magnitude -- the star becomes about 3 times brighter. So far, to date, finding this “flash” is the only technique (other than photometric transits or pulsar-timing) by which we can detect terrestrial-type planets around Sunlike stars or close double-star system ...
Target Stars for Earth-like Planet Searches with the Terrestrial
... diameter of the Habitable Zone (HZ). For these purposes, the HZ is defined as the distance from the star at which an Earth-like planet would have the same equilibrium temperature as Earth. (3) Select those stars for which the HZ is greater than some limit. We have focused on stars for which the HZ i ...
... diameter of the Habitable Zone (HZ). For these purposes, the HZ is defined as the distance from the star at which an Earth-like planet would have the same equilibrium temperature as Earth. (3) Select those stars for which the HZ is greater than some limit. We have focused on stars for which the HZ i ...
Compact stars
... insufficient to counterbalance gravity and a catastrophic gravitational collapse occurs in milliseconds. The escape velocity at the surface, already at least 1/3 light speed, quickly reaches the velocity of light. No energy or matter can escape: a black hole has been created. All light will be trapp ...
... insufficient to counterbalance gravity and a catastrophic gravitational collapse occurs in milliseconds. The escape velocity at the surface, already at least 1/3 light speed, quickly reaches the velocity of light. No energy or matter can escape: a black hole has been created. All light will be trapp ...
Stellar Classification - Solar Physics and Space Weather
... • Spectral type of a star gives information about temperature, luminosity, and color • From this information, the distance, mass, surrounding environment, and past history of the star can be deduced • Spectral classification is basic to evolution of stars • An early schema (from the 19th century) ra ...
... • Spectral type of a star gives information about temperature, luminosity, and color • From this information, the distance, mass, surrounding environment, and past history of the star can be deduced • Spectral classification is basic to evolution of stars • An early schema (from the 19th century) ra ...
Making Visual Estimates
... Variable and comparison stars Look at the example below. The variable is shown between the four focus lines. The magnitudes of the comparison (“comp”) stars are shown on the chart next to the stars (64,51,91, etc.). ...
... Variable and comparison stars Look at the example below. The variable is shown between the four focus lines. The magnitudes of the comparison (“comp”) stars are shown on the chart next to the stars (64,51,91, etc.). ...
Relativistic jets in microquasars, AGN and GRBs
... • A LARGE FRACTION OF ULXs IN NEARBY GALAXIES • GRBs OF LONG DURATION IN DISTANT GALAXIES BLACK HOLE ASTROPHYSICS IS TODAY IN AN ANALOGOUS SITUATION AS WAS STELLAR ASTRONOMY IN THE FIRST HALF OF LAST CENTURY, WHEN THE HR DIAGRAM WAS ...
... • A LARGE FRACTION OF ULXs IN NEARBY GALAXIES • GRBs OF LONG DURATION IN DISTANT GALAXIES BLACK HOLE ASTROPHYSICS IS TODAY IN AN ANALOGOUS SITUATION AS WAS STELLAR ASTRONOMY IN THE FIRST HALF OF LAST CENTURY, WHEN THE HR DIAGRAM WAS ...
The measure of Cosmological distances
... Galaxy. - But he could not scale the size of the galaxy ...
... Galaxy. - But he could not scale the size of the galaxy ...
... Historical evolution of the Sun 1. Compared to now, was the Sun fainter or brighter at the moment fusion began (point "P")? 2. Had you been on Earth around the time of its formation (a few tens of millions of years after the Sun's), would the Sun then look brighter or fainter than it does today? The ...
Our colour this month is black. Our shape is a crescent. Our topic this
... Preschoolers love to look up. The moon is a favourite object for many children, its bright face changing all the time. Encourage your child to observe the ever changing moon and twinkling stars. With this newssheet we have included some ideas and activities to do with the children at home. Please n ...
... Preschoolers love to look up. The moon is a favourite object for many children, its bright face changing all the time. Encourage your child to observe the ever changing moon and twinkling stars. With this newssheet we have included some ideas and activities to do with the children at home. Please n ...
Lecture19
... visible only in infrared and radio light. Cloud collapses, proto-star heats up. If hot enough, nuclear fusion of hydrogen will ignite, and a star is born. A disk of material coalesces around the star: it’s the solar nebula, from which ...
... visible only in infrared and radio light. Cloud collapses, proto-star heats up. If hot enough, nuclear fusion of hydrogen will ignite, and a star is born. A disk of material coalesces around the star: it’s the solar nebula, from which ...
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.