CHAP
... - The stars’ colors reveal the ____________________ of the stars. - Cool stars appear _________ in color with a surface temperature of about 3,200 degrees Celsius. - Warm stars appear _____________ in color with a surface temperature of about 5,500 degrees Celsius. - The hottest stars are __________ ...
... - The stars’ colors reveal the ____________________ of the stars. - Cool stars appear _________ in color with a surface temperature of about 3,200 degrees Celsius. - Warm stars appear _____________ in color with a surface temperature of about 5,500 degrees Celsius. - The hottest stars are __________ ...
Project 4: The HR diagram. Open clusters
... stars do not fall randomly on the graph; rather they are confined to specific regions. This tells you that there is some physical relationship between the luminosity and temperature of a star. From the figure, one sees that most stars fall along a diagonal strip from high temperature, high lumi ...
... stars do not fall randomly on the graph; rather they are confined to specific regions. This tells you that there is some physical relationship between the luminosity and temperature of a star. From the figure, one sees that most stars fall along a diagonal strip from high temperature, high lumi ...
Star Finder
... Rotate the dial so that midnight is on December 21. We have set the sky for this night. Be sure to keep this setting for what follows and change it when prompted. A: Northern Horizon-Winter-Spring Skies: The circumpolar group is always prominent: The constellation closest to the pole is called URSA ...
... Rotate the dial so that midnight is on December 21. We have set the sky for this night. Be sure to keep this setting for what follows and change it when prompted. A: Northern Horizon-Winter-Spring Skies: The circumpolar group is always prominent: The constellation closest to the pole is called URSA ...
10 New Constellations
... Mirfak Also known as Alpha Persei, Mirfak is located around 500 light years from Earth and is the brightest star in the constellation, it's a white supergiant with a diameter around 30 times larger than the sun. Algol Also known as Beta Persei, Algol is actually a three star system located around 90 ...
... Mirfak Also known as Alpha Persei, Mirfak is located around 500 light years from Earth and is the brightest star in the constellation, it's a white supergiant with a diameter around 30 times larger than the sun. Algol Also known as Beta Persei, Algol is actually a three star system located around 90 ...
Answers for the HST Scavenger Hunt
... What is the difference between a galaxy and a nebula? A nebula is a cloud of gas and dust located between stars and/or surrounding stars. A galaxy is a collection of stars, gas, and dust bound together by gravity. How are galaxies classified? Galaxies are classified or grouped by their shape. ...
... What is the difference between a galaxy and a nebula? A nebula is a cloud of gas and dust located between stars and/or surrounding stars. A galaxy is a collection of stars, gas, and dust bound together by gravity. How are galaxies classified? Galaxies are classified or grouped by their shape. ...
LIFE CYCLE OF STARS
... Cool at the end of the Red Giant stage faster than larger stars, so they begin to shed its gases outside its core forming a planetary nebula . The center of the small star then begins to cool to become a white dwarf and cools more to become a black dwarf. Large Stars Larger stars are hotter th ...
... Cool at the end of the Red Giant stage faster than larger stars, so they begin to shed its gases outside its core forming a planetary nebula . The center of the small star then begins to cool to become a white dwarf and cools more to become a black dwarf. Large Stars Larger stars are hotter th ...
Day 2
... Finally, the rate of fusion becomes high enough to establish gravitational equilibrium. At this point, fusion becomes self-sustaining and the star settles into its hydrogen burning, main sequence life. The main sequence phase is the longest phase of a star's life, about 10 billion years for a star w ...
... Finally, the rate of fusion becomes high enough to establish gravitational equilibrium. At this point, fusion becomes self-sustaining and the star settles into its hydrogen burning, main sequence life. The main sequence phase is the longest phase of a star's life, about 10 billion years for a star w ...
ppt
... is generally very small. For an open cluster, the velocity dispersion is ~ 1 km/s, corresponding to a proper-motion dispersion of 0.2 mas/yr for a cluster at a distance of 1 kpc from the Sun. ...
... is generally very small. For an open cluster, the velocity dispersion is ~ 1 km/s, corresponding to a proper-motion dispersion of 0.2 mas/yr for a cluster at a distance of 1 kpc from the Sun. ...
How Old is the Universe?
... that the age of the Universe is greater than 12.07 Gyr with 95% confidence. They say the age is proportional to one over the luminosity of the RR Lyra stars which are used to determine the distances to globular clusters. Chaboyer (1997) gives a best estimate of 14.6 +/- 1.7 Gyr for the age of the gl ...
... that the age of the Universe is greater than 12.07 Gyr with 95% confidence. They say the age is proportional to one over the luminosity of the RR Lyra stars which are used to determine the distances to globular clusters. Chaboyer (1997) gives a best estimate of 14.6 +/- 1.7 Gyr for the age of the gl ...
Slide 1
... closest planetary nebula to Earth. It is 650 light-years away and about 2.5 light years in diameter. ...
... closest planetary nebula to Earth. It is 650 light-years away and about 2.5 light years in diameter. ...
January 2013 - astronomy for beginners
... The crowning glory of the constellation of Orion is When a photon of ultraviolet light from the powerful young undoubtedly Messier 42 (M42) the great Orion Nebula. stars hits a gas atom it causes an electron to jump from its It can be found below the line of three stars of his belt normal orbit to a ...
... The crowning glory of the constellation of Orion is When a photon of ultraviolet light from the powerful young undoubtedly Messier 42 (M42) the great Orion Nebula. stars hits a gas atom it causes an electron to jump from its It can be found below the line of three stars of his belt normal orbit to a ...
Brightness Luminosity and Inverse Square Law
... increased your distance from a star by 10 times? ...
... increased your distance from a star by 10 times? ...
lecture22
... Carbon and Oxygen. Why cannot the star produce heavier element? not enough mass to reach the temperature. Why more massive stars have higher central temperatures? high pressure to balance the gravity. ...
... Carbon and Oxygen. Why cannot the star produce heavier element? not enough mass to reach the temperature. Why more massive stars have higher central temperatures? high pressure to balance the gravity. ...
Canis Major
... celestial animals, including Lepus, the hare, and Taurus, the bull. Orion was in love with Merope, one of the Seven Sisters who form the Pleiades, but Merope would have nothing to do with him. Orion's tragic life ended when he stepped on Scorpius, the scorpion. The gods felt sorry for him, so they p ...
... celestial animals, including Lepus, the hare, and Taurus, the bull. Orion was in love with Merope, one of the Seven Sisters who form the Pleiades, but Merope would have nothing to do with him. Orion's tragic life ended when he stepped on Scorpius, the scorpion. The gods felt sorry for him, so they p ...
an evening`s viewing with your new `scope
... perhaps the moon is not visible. Unfortunately there are no planets visible at the moment; we must wait until the summer for Jupiter. Other targets worth looking at are the well-known major astronomical objects. Try the Pleaides in Taurus and the Orion Nebula if you can catch them before they set. A ...
... perhaps the moon is not visible. Unfortunately there are no planets visible at the moment; we must wait until the summer for Jupiter. Other targets worth looking at are the well-known major astronomical objects. Try the Pleaides in Taurus and the Orion Nebula if you can catch them before they set. A ...
20_LectureOutline
... Learning Astronomy from History Sirius is the brightest star in the northern sky and has been recorded throughout history. But there is a mystery! All sightings recorded between about 100 BCE and 200 CE describe it as being red—it is now blue-white. Why? Could there have been an intervening dust clo ...
... Learning Astronomy from History Sirius is the brightest star in the northern sky and has been recorded throughout history. But there is a mystery! All sightings recorded between about 100 BCE and 200 CE describe it as being red—it is now blue-white. Why? Could there have been an intervening dust clo ...
The All-Seeing, All-Magnifying Eye
... depends upon the alignment between the foreground cluster and the more distant galaxy, which is behind the cluster. The main goal of the CASTLeS project is to study the properties of all the known cases of galaxies acting as gravitational lenses. In the example above, you will notice that there are ...
... depends upon the alignment between the foreground cluster and the more distant galaxy, which is behind the cluster. The main goal of the CASTLeS project is to study the properties of all the known cases of galaxies acting as gravitational lenses. In the example above, you will notice that there are ...
AST 341 Final Exam and Solutions
... (b) The binding energy of Fe56 is about 9 MeV per nucleon; that of He4 is about 7 MeV per nucleon. If the main sequence lifetime of a 50 M⊙ star is about 5×106 years, what is its average luminosity while on the main sequence? Proceed as in problem 1. 10% of the stellar mass is in the core. This is 5 ...
... (b) The binding energy of Fe56 is about 9 MeV per nucleon; that of He4 is about 7 MeV per nucleon. If the main sequence lifetime of a 50 M⊙ star is about 5×106 years, what is its average luminosity while on the main sequence? Proceed as in problem 1. 10% of the stellar mass is in the core. This is 5 ...
Photoelectric Photometry of the Pleiades
... The computer program you will use is a realistic simulation of a UBV photometer attached to a moderate sized research telescope. The telescope is controlled by a computer that allows you to move from star to star and make measurements. Different filters can be selected for each observation, and the ...
... The computer program you will use is a realistic simulation of a UBV photometer attached to a moderate sized research telescope. The telescope is controlled by a computer that allows you to move from star to star and make measurements. Different filters can be selected for each observation, and the ...
Where is the Solar System in the Universe?
... • They are the smallest and faintest galaxies, but they are also the most common. ...
... • They are the smallest and faintest galaxies, but they are also the most common. ...
Unit 1
... reveal a supermassive black hole at the Milky Way’s core – Called Sag A* – 5 million solar masses! ...
... reveal a supermassive black hole at the Milky Way’s core – Called Sag A* – 5 million solar masses! ...
Week 11 Concept Summary
... 2. Interstellar Medium: This is the gas and dust that floats freely about the galaxy. It is what blocks visible light and only allows us to see nearby stars in the plane of the galaxy, though radio and infrared light can get through it easily. Stars collapse and form from the ISM, build up more heav ...
... 2. Interstellar Medium: This is the gas and dust that floats freely about the galaxy. It is what blocks visible light and only allows us to see nearby stars in the plane of the galaxy, though radio and infrared light can get through it easily. Stars collapse and form from the ISM, build up more heav ...
SpfFin - Academic Program Pages
... center of the star. Contraction of a star continues slowly throughout its lifetime. Nuclear fusion begins as the temperature rises and this generates additional heat that produces an increase in internal gas pressure. 5. A certain star is seen to have a relatively low surface temperature but a very ...
... center of the star. Contraction of a star continues slowly throughout its lifetime. Nuclear fusion begins as the temperature rises and this generates additional heat that produces an increase in internal gas pressure. 5. A certain star is seen to have a relatively low surface temperature but a very ...
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.