18 Throughout history people around the world have looked up at
... especially planting and harvesting times. Even though the stories might not be as accurate as our current scientific knowledge, they can be interesting to share with your classes. The stories provide an opportunity not only to discuss the rotation of the Earth on its axis and its revolution around t ...
... especially planting and harvesting times. Even though the stories might not be as accurate as our current scientific knowledge, they can be interesting to share with your classes. The stories provide an opportunity not only to discuss the rotation of the Earth on its axis and its revolution around t ...
Lab 2
... 8. a. I will display the altitude and azimuth (altaz) coordinate system. What units does it use? What do you notice is different about this system, compared to the other two systems? Hint: Does this set of gridlines move? What are the advantages of this system? What are the disadvantages? ...
... 8. a. I will display the altitude and azimuth (altaz) coordinate system. What units does it use? What do you notice is different about this system, compared to the other two systems? Hint: Does this set of gridlines move? What are the advantages of this system? What are the disadvantages? ...
01-Star Atlas Project - Mapping the Heavens
... some direction from some origin (starting point). The simplest coordinate system imaginable is the onedimensional "number axis" (Figure 1-6). On this number axis, the coordinate measures the number of units something is left (plus) or right (minus) of the origin at zero along the number axis. For ex ...
... some direction from some origin (starting point). The simplest coordinate system imaginable is the onedimensional "number axis" (Figure 1-6). On this number axis, the coordinate measures the number of units something is left (plus) or right (minus) of the origin at zero along the number axis. For ex ...
Astronomy 401 Lecture 1 Overview of the Universe 1 Class overview
... only a fraction F ∼ rmax /λ of the sky will be covered with stars. Note that this result will also be found if the universe is infinitely large, but has no stars beyond a distance rmax . • Assumed that the universe is infinitely old. When we see stars farther away, we’re also seeing stars farther ba ...
... only a fraction F ∼ rmax /λ of the sky will be covered with stars. Note that this result will also be found if the universe is infinitely large, but has no stars beyond a distance rmax . • Assumed that the universe is infinitely old. When we see stars farther away, we’re also seeing stars farther ba ...
Astronomy 15 - Homework 3 - Due Wed. April 24 1) As we`ll see
... Consider a planet of radius rp orbiting a distance d from the sun. At this distance, the sun’s luminosity L has been spread out over a sphere of area 4πd2 . The planet’s cross-sectional area is πrp2 . a) Show that the radiant power intercepted by the planet is rp2 L 2 . 4d Suppose the planet absor ...
... Consider a planet of radius rp orbiting a distance d from the sun. At this distance, the sun’s luminosity L has been spread out over a sphere of area 4πd2 . The planet’s cross-sectional area is πrp2 . a) Show that the radiant power intercepted by the planet is rp2 L 2 . 4d Suppose the planet absor ...
H. Other Methods of Determining Stellar Distances
... velocity); they wander about through the Galaxy. • If we assume that all stars have about the same space velocity (risky!), then those with the most apparent motion against the background of very remote stars are probably the closest. • This motion may be across the sky (proper motion); it may be de ...
... velocity); they wander about through the Galaxy. • If we assume that all stars have about the same space velocity (risky!), then those with the most apparent motion against the background of very remote stars are probably the closest. • This motion may be across the sky (proper motion); it may be de ...
File
... before it is completely turned into stars Protogalactic cooling…the initial density determines how fast the cloud can form stars before it collapses into a disk ...
... before it is completely turned into stars Protogalactic cooling…the initial density determines how fast the cloud can form stars before it collapses into a disk ...
PH607lec10
... Kinematics: Spiral Galaxy Rotation Curve As is typical for many galaxies, the distribution of mass in the Milky Way is such that the orbital speed of most stars in the galaxy does not depend strongly on its distance from the centre. Away from the central bulge or outer rim, the typical stellar velo ...
... Kinematics: Spiral Galaxy Rotation Curve As is typical for many galaxies, the distribution of mass in the Milky Way is such that the orbital speed of most stars in the galaxy does not depend strongly on its distance from the centre. Away from the central bulge or outer rim, the typical stellar velo ...
Nebulas - WLWV Staff Blogs
... are blue because, they scatter the blue light from nearby stars while the rest of the colors are allowed to pass through the cloud. ...
... are blue because, they scatter the blue light from nearby stars while the rest of the colors are allowed to pass through the cloud. ...
winter
... painting aligned with the equinoxes and solstices. • This gave the Anasazi people a way to check their calendar and make corrections as needed. • Other cultures had similar monuments to help them keep track with the yearly cycle of the sun. ...
... painting aligned with the equinoxes and solstices. • This gave the Anasazi people a way to check their calendar and make corrections as needed. • Other cultures had similar monuments to help them keep track with the yearly cycle of the sun. ...
MAIN SEQUENCE STARS, Red Giants and White Dwarfs
... a pulse (or pulses) that eject most of the H and He into space as a planetary nebula ...
... a pulse (or pulses) that eject most of the H and He into space as a planetary nebula ...
Extragalactic Astrophysics 1 AA 2011-2012 Prof. LA Antonelli
... between Sbc e Sc, not clearly barred as in SB types, it sometimes ...
... between Sbc e Sc, not clearly barred as in SB types, it sometimes ...
Lecture14
... • Stars are born from this gas and dust, collectively known as the interstellar medium. • During their lifetime, stars may return some material to the ISM through surface winds or explosive events ...
... • Stars are born from this gas and dust, collectively known as the interstellar medium. • During their lifetime, stars may return some material to the ISM through surface winds or explosive events ...
society journal - Auckland Astronomical Society
... ovember's Film Night featured a documentary showing how extreme solar activity could disrupt power supplies and threaten our electricity dependent civilisation. It explained how a solar flare sends charged particles and radiation out into space. The Earth’s atmosphere and magnetic fields are usually ...
... ovember's Film Night featured a documentary showing how extreme solar activity could disrupt power supplies and threaten our electricity dependent civilisation. It explained how a solar flare sends charged particles and radiation out into space. The Earth’s atmosphere and magnetic fields are usually ...
Section 19.3
... Figuring out the distance between galaxies is one of the more difficult tasks in astronomy. A faint object in the night sky could be a dim object that is relatively nearby or a bright object that is far, far away. ...
... Figuring out the distance between galaxies is one of the more difficult tasks in astronomy. A faint object in the night sky could be a dim object that is relatively nearby or a bright object that is far, far away. ...
Stars 3
... light-years across, is located 7,000 light-years away in the constellation Taurus. The green, yellow and red filaments concentrated toward the edges of the nebula are remnants of the star that were ejected into space by the explosion. At the center of the Crab Nebula lies the Crab Pulsar -- the coll ...
... light-years across, is located 7,000 light-years away in the constellation Taurus. The green, yellow and red filaments concentrated toward the edges of the nebula are remnants of the star that were ejected into space by the explosion. At the center of the Crab Nebula lies the Crab Pulsar -- the coll ...
An interesting nebular object in LDN 288
... There are several objects in this region: a B type star GSC 0625400181 surrounded by an HII region (object 2 in Fig.2), a star with a straight jet (object 3 in Fig.2), and a unique object SNO 85 [3] (object 1 in Fig.2). The results of 12CO (10) observations of the region are given. The B type star i ...
... There are several objects in this region: a B type star GSC 0625400181 surrounded by an HII region (object 2 in Fig.2), a star with a straight jet (object 3 in Fig.2), and a unique object SNO 85 [3] (object 1 in Fig.2). The results of 12CO (10) observations of the region are given. The B type star i ...
script
... The strength of the Lithium line can be calibrated with age, but it is generally not that good. In a solar type star the presence of Lithium most likely means it is young. But the processes that affect the strength of lithium are poorly known. For instance, strong Li is also found in some evolved gi ...
... The strength of the Lithium line can be calibrated with age, but it is generally not that good. In a solar type star the presence of Lithium most likely means it is young. But the processes that affect the strength of lithium are poorly known. For instance, strong Li is also found in some evolved gi ...
Linking Asteroids and Meteorites through Reflectance Spectroscopy
... Sun out to the Sun’s orbit • Mass-to-Light ratio of our Sun is 1 solar mass per solar luminosity • So most matter is dimmer than the Sun ...
... Sun out to the Sun’s orbit • Mass-to-Light ratio of our Sun is 1 solar mass per solar luminosity • So most matter is dimmer than the Sun ...
Kerboodle Gravity Questions673 KB
... to the centre of any galaxy, nor has any other object previously been observed making more than a small fraction of its orbital trek around a galaxy. "Our work proves that there is indeed a super massive black hole in our own galaxy," said Rainer Schoedel, a PhD student at the Max-Planck Institute f ...
... to the centre of any galaxy, nor has any other object previously been observed making more than a small fraction of its orbital trek around a galaxy. "Our work proves that there is indeed a super massive black hole in our own galaxy," said Rainer Schoedel, a PhD student at the Max-Planck Institute f ...
Constellation
... named after heroes and beasts from stories and after everyday objects. You probably know some constellations. The Big Dipper looks like a giant pot with a long handle. Orion is named after a hunter in Greek mythology. You can see his belt, marked by three bright stars, and his sword, which hangs fro ...
... named after heroes and beasts from stories and after everyday objects. You probably know some constellations. The Big Dipper looks like a giant pot with a long handle. Orion is named after a hunter in Greek mythology. You can see his belt, marked by three bright stars, and his sword, which hangs fro ...
Astronomy 102, Spring 2003 Solutions to Review Problems
... d, the distance, in order to calculate L. For mass, if it’s a binary star, you can measure the period of the orbit without knowing the distance, but again to get the physical semi-major axis of the orbit from the angular separation of the two stars, you need to know the distance to the system. Prope ...
... d, the distance, in order to calculate L. For mass, if it’s a binary star, you can measure the period of the orbit without knowing the distance, but again to get the physical semi-major axis of the orbit from the angular separation of the two stars, you need to know the distance to the system. Prope ...
Lecture 6-1: Schematic Evolution of Stars as seen from the core
... Hydrostatic equilibrium and the ideal gas law connects rc and Tc. With increasing mass, the central pressure has to increase to support the star against gravity. As thermal pressure scales with r while hydrostatic pressure scales with r4/3, a more massive star requires a higher central temperature ( ...
... Hydrostatic equilibrium and the ideal gas law connects rc and Tc. With increasing mass, the central pressure has to increase to support the star against gravity. As thermal pressure scales with r while hydrostatic pressure scales with r4/3, a more massive star requires a higher central temperature ( ...
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.