Small Wonders: Cygnus
... Three degrees almost directly east of Deneb, we come across one of the most photographed nebulae in the night sky. The North American Nebula is spectacular in long exposure photographs, and unlike many objects in the sky clearly resembles its namesake. Until recently tho, its been considered a chall ...
... Three degrees almost directly east of Deneb, we come across one of the most photographed nebulae in the night sky. The North American Nebula is spectacular in long exposure photographs, and unlike many objects in the sky clearly resembles its namesake. Until recently tho, its been considered a chall ...
Pattern recognition of star constellations for spacecraft
... velocities: 1) the solar system velocity; 2) the Earth velocity; and, 3) the satellites own velocity. I . The star catalogue is already in heliocentric coordinates. 2. The average velocity of the Earth is 29.79 k d s e c with a maximum correction on 20.48 arc sec. 3. The “Oersted” orbit is a circula ...
... velocities: 1) the solar system velocity; 2) the Earth velocity; and, 3) the satellites own velocity. I . The star catalogue is already in heliocentric coordinates. 2. The average velocity of the Earth is 29.79 k d s e c with a maximum correction on 20.48 arc sec. 3. The “Oersted” orbit is a circula ...
Lect16-3-28-and-30-1..
... Each time the star’s core collapses further, the surrounding shell burning intensifies, and the star’s outer layers inflate further. Each time the core ignites again, the outer layers may contract a ...
... Each time the star’s core collapses further, the surrounding shell burning intensifies, and the star’s outer layers inflate further. Each time the core ignites again, the outer layers may contract a ...
chapter 2 - Test Bank 1
... People from different cultures all see the same stars, but the asterisms and constellations are different. Technically, we would now all see the same constellations, because these have official definitions and borders; however, this designation might not be well accepted by people of various culture ...
... People from different cultures all see the same stars, but the asterisms and constellations are different. Technically, we would now all see the same constellations, because these have official definitions and borders; however, this designation might not be well accepted by people of various culture ...
phys-1600 - Dave Heppenstall
... • The intense cratering on the moon can be traced back to around 4 million years ago. • The Earth also experienced this large-scale cratering, but unlike the Earth, the moon did not experience the same type of reshaping and erosion that the Earth did. • If the moon ever did have an atmosphere due to ...
... • The intense cratering on the moon can be traced back to around 4 million years ago. • The Earth also experienced this large-scale cratering, but unlike the Earth, the moon did not experience the same type of reshaping and erosion that the Earth did. • If the moon ever did have an atmosphere due to ...
Rotation in the ZAMS: Be and Bn stars
... Figure 3a shows the apparent V=7 magnitude limited counts of dwarf Be stars relative to dwarf B stars. There is an apparent lack of dwarf Be stars cooler than spectral type B7. This could be due to genuine Be stars whose discs are minute and/or too cool for the Hα emission be detectable and/or, to f ...
... Figure 3a shows the apparent V=7 magnitude limited counts of dwarf Be stars relative to dwarf B stars. There is an apparent lack of dwarf Be stars cooler than spectral type B7. This could be due to genuine Be stars whose discs are minute and/or too cool for the Hα emission be detectable and/or, to f ...
Stars 3
... mysterious “halo” which remains stationary, but grows brighter then fainter over time. Also seen are the effects of two polar jets that move out along the rotation axis of the pulsar. The most dynamic feature seen -- a small knot that “dances dances around around” so much that astronomers have been ...
... mysterious “halo” which remains stationary, but grows brighter then fainter over time. Also seen are the effects of two polar jets that move out along the rotation axis of the pulsar. The most dynamic feature seen -- a small knot that “dances dances around around” so much that astronomers have been ...
A PowerPoint on Lunar Grazing Occultations
... What is a Lunar Occultation? • An “occultation” happens when one celestial object moves in front of a much smaller more distant celestial object • (If the objects are comparable in size, it’s usually called an “eclipse” instead) • As the moon moves through it’s orbit, it passes in front of distant ...
... What is a Lunar Occultation? • An “occultation” happens when one celestial object moves in front of a much smaller more distant celestial object • (If the objects are comparable in size, it’s usually called an “eclipse” instead) • As the moon moves through it’s orbit, it passes in front of distant ...
Where to Look: Habitable Zones
... It is not clear that technology does not lead to self-destruction (e.g. the cold war) Fred Hoyle: “The chance that higher life forms might have emerged in this way is comparable to the chance that a tornado sweeping through a junkyard might assemble a Boeing 747 from the materials therein.” ...
... It is not clear that technology does not lead to self-destruction (e.g. the cold war) Fred Hoyle: “The chance that higher life forms might have emerged in this way is comparable to the chance that a tornado sweeping through a junkyard might assemble a Boeing 747 from the materials therein.” ...
Astronomical Observations (Fall 2004) Final Exam
... count rate is 16 s-1. Assuming that the noise is random and that equal time is spent observing on and off the source, find the total integration time needed to detect a source whose strength is 1% of the background if the criterion for detection is that the signal-to-noise ratio is 3. (10 pts) ...
... count rate is 16 s-1. Assuming that the noise is random and that equal time is spent observing on and off the source, find the total integration time needed to detect a source whose strength is 1% of the background if the criterion for detection is that the signal-to-noise ratio is 3. (10 pts) ...
nasafinal - University of Oregon
... (hereafter XUV) features around normal galaxies that stimulated our interest in using PMO to discover possible new candidates for follow-up imaging with the GALEX satellite. Using the initial research money granted by the OSGC, we were able to successfully acquire observing time during cycle 4 of th ...
... (hereafter XUV) features around normal galaxies that stimulated our interest in using PMO to discover possible new candidates for follow-up imaging with the GALEX satellite. Using the initial research money granted by the OSGC, we were able to successfully acquire observing time during cycle 4 of th ...
Understanding Stars
... In this exercise, your group will calculate the temperature, luminosity, and radius of a number of stars, and add these values to the temperature-luminosity diagram on the board. The accompanying handout gives recipes for calculating, in physical units, the properties of any star based only on its s ...
... In this exercise, your group will calculate the temperature, luminosity, and radius of a number of stars, and add these values to the temperature-luminosity diagram on the board. The accompanying handout gives recipes for calculating, in physical units, the properties of any star based only on its s ...
Document
... 1. How many light-years are in 10 parsecs? 2. How many light-years could a human travel in a space craft? 3. Which is larger, a parsec or an AU? 4. Why do you think we have two units, the parsec and the light year, when they are so close to each other? (1 parsec = 3.26 light-years) ...
... 1. How many light-years are in 10 parsecs? 2. How many light-years could a human travel in a space craft? 3. Which is larger, a parsec or an AU? 4. Why do you think we have two units, the parsec and the light year, when they are so close to each other? (1 parsec = 3.26 light-years) ...
Slide 1
... system. Both masses equal => center of mass is in the middle, rA = rB. The more unequal the masses are, the more it shifts toward the more massive star. ...
... system. Both masses equal => center of mass is in the middle, rA = rB. The more unequal the masses are, the more it shifts toward the more massive star. ...
holiday lights - Denver Astronomical Society
... The Angel Nebula is a dim and rarely photographed or observed emission and reflection nebula in the constellation Monoceros (the Unicorn) just off the east end of Orion’s belt. The angel figure consists of NGC 2170 and Van den Bergh 67, 68, and 69 that form the head, red heart, the wings and the flo ...
... The Angel Nebula is a dim and rarely photographed or observed emission and reflection nebula in the constellation Monoceros (the Unicorn) just off the east end of Orion’s belt. The angel figure consists of NGC 2170 and Van den Bergh 67, 68, and 69 that form the head, red heart, the wings and the flo ...
presentation source
... “[Even though T Tauri associations could all have similar colors implying young age by coincidence], it is of course, tempting to search for a connection between the T Tauri stars and Bok’s ‘globules,’ but we must admit that at present there is no evidence of any objects intermediate between the two ...
... “[Even though T Tauri associations could all have similar colors implying young age by coincidence], it is of course, tempting to search for a connection between the T Tauri stars and Bok’s ‘globules,’ but we must admit that at present there is no evidence of any objects intermediate between the two ...
Examining the M67 Classification as an Open Cluster
... taken from the Atlas Image website. Using these photographs (Figures 3 and 4) and this Rclust, finally we estimated the total number of stars in the system N clust 1200 . Figure 5 shows the observed color-magnitude, mvis vs. B - V , diagram (or the HR diagram) for M67, based on our observation ...
... taken from the Atlas Image website. Using these photographs (Figures 3 and 4) and this Rclust, finally we estimated the total number of stars in the system N clust 1200 . Figure 5 shows the observed color-magnitude, mvis vs. B - V , diagram (or the HR diagram) for M67, based on our observation ...
Chapter 26
... • The arms of a spiral galaxy look like pinwheels that begin near the galactic center and extend outward through the disk of the ...
... • The arms of a spiral galaxy look like pinwheels that begin near the galactic center and extend outward through the disk of the ...
Astronomy (stars, galaxies and the Universe)
... Groups of stars that form a pattern The revolution of the Earth around the Sun cause different constellations to be seen at different times of the year Stars located above the north and south poles, called circumpolar stars, appear to move in circles above the horizon each night Astronomers use cons ...
... Groups of stars that form a pattern The revolution of the Earth around the Sun cause different constellations to be seen at different times of the year Stars located above the north and south poles, called circumpolar stars, appear to move in circles above the horizon each night Astronomers use cons ...
Star Birth - Sierra College Astronomy Home Page
... overcome the gas pressure, which depends on temperature and density through the ideal gas law ...
... overcome the gas pressure, which depends on temperature and density through the ideal gas law ...
Astro 10B Study Questions for Each Chapter
... Which is larger: the Local Group or the Local Cluster? How are galaxies, groups and clusters distributed through space? Which type of clusters contain the most giant elliptical galaxies? Where would you find a galaxy which is the result of several mergers? What happens when galaxies collide? How wou ...
... Which is larger: the Local Group or the Local Cluster? How are galaxies, groups and clusters distributed through space? Which type of clusters contain the most giant elliptical galaxies? Where would you find a galaxy which is the result of several mergers? What happens when galaxies collide? How wou ...
homework assignment 2
... yourselves and figure out some way of communicating with each other outside of class so that all of the group knows who is doing what over the next week. Elect a secretary/recorder, who will list all the group members’ names on a sheet of paper. Look over the list of statements below and choose thre ...
... yourselves and figure out some way of communicating with each other outside of class so that all of the group knows who is doing what over the next week. Elect a secretary/recorder, who will list all the group members’ names on a sheet of paper. Look over the list of statements below and choose thre ...
Perseus (constellation)
Perseus, named after the Greek mythological hero Perseus, is a constellation in the northern sky. It was one of 48 listed by the 2nd-century astronomer Ptolemy and among the 88 modern constellations defined by the International Astronomical Union (IAU). It is located in the northern celestial hemisphere near several other constellations named after legends surrounding Perseus, including Andromeda to the west and Cassiopeia to the north. Perseus is also bordered by Aries and Taurus to the south, Auriga to the east, Camelopardalis to the north, and Triangulum to the west.The galactic plane of the Milky Way passes through Perseus but is mostly obscured by molecular clouds. The constellation's brightest star is the yellow-white supergiant Alpha Persei (also called Mirfak), which shines at magnitude 1.79. It and many of the surrounding stars are members of an open cluster known as the Alpha Persei Cluster. The best-known star, however, is Algol (Beta Persei), linked with ominous legends because of its variability, which is noticeable to the naked eye. Rather than being an intrinsically variable star, it is an eclipsing binary. Other notable star systems in Perseus include X Persei, a binary system containing a neutron star, and GK Persei, a nova that peaked at magnitude 0.2 in 1901. The Double Cluster, comprising two open clusters quite near each other in the sky, was known to the ancient Chinese. The constellation gives its name to the Perseus Cluster (Abell 426), a massive galaxy cluster located 250 million light-years from Earth. It hosts the radiant of the annual Perseids meteor shower—one of the most prominent meteor showers in the sky.