Standard Set 2 - Atascadero High School
... Students should know that scientists catalog galaxies and stars according to the coordinates of their positions in the sky, their brightness, and their other physical characteristics. Spectroscopic analysis of the light from distant stars indicates that the same elements that make up nearby stars a ...
... Students should know that scientists catalog galaxies and stars according to the coordinates of their positions in the sky, their brightness, and their other physical characteristics. Spectroscopic analysis of the light from distant stars indicates that the same elements that make up nearby stars a ...
The Birth of Stars
... It is for this reason that we believe there are many planetary systems – it is part and parcel of the star formation process to make a disk. Typical Galactic spin makes disks about the size of our Solar System… ...
... It is for this reason that we believe there are many planetary systems – it is part and parcel of the star formation process to make a disk. Typical Galactic spin makes disks about the size of our Solar System… ...
Energy Levels in Atoms
... You can tell something from the brightness and color of a star, but there are complications. •The color gives you an approximate temperature. •It is hard to tell the distance from the brightness, because the size is also quite variable: •A small blue star can be as luminous as a larger red star. A b ...
... You can tell something from the brightness and color of a star, but there are complications. •The color gives you an approximate temperature. •It is hard to tell the distance from the brightness, because the size is also quite variable: •A small blue star can be as luminous as a larger red star. A b ...
Angles and Measurement
... angular size expressed as an angle α. Note that the apparent size can also depend on the orientation of the object; a snake looks smaller “face on” than “sideways”. However, many astronomical objects are spherical, or nearly so (stars, planets,..) and spheres present the same circular aspect when vi ...
... angular size expressed as an angle α. Note that the apparent size can also depend on the orientation of the object; a snake looks smaller “face on” than “sideways”. However, many astronomical objects are spherical, or nearly so (stars, planets,..) and spheres present the same circular aspect when vi ...
The Sun and Other Stars - Tuslaw Local School District
... * 5 x’s the mass of the sun, 30 km in diameter * the gravity is so strong nothing can escape including light! ...
... * 5 x’s the mass of the sun, 30 km in diameter * the gravity is so strong nothing can escape including light! ...
(the factor f star in the Drake equation. Recall it
... dust clouds (of helium and hydrogen) but as it progressed, the centers of the more massive clouds and the pressure due to the gravitational attraction got larger and larger in them. Eventually, the pressure was so great that the nuclei of the atoms started to get pushed together. To do this requires ...
... dust clouds (of helium and hydrogen) but as it progressed, the centers of the more massive clouds and the pressure due to the gravitational attraction got larger and larger in them. Eventually, the pressure was so great that the nuclei of the atoms started to get pushed together. To do this requires ...
Was kann man von offenen Sternhaufen lernen?
... M66 (10 Mpc away): HST – NASA, Press release, 08.04.2010 ...
... M66 (10 Mpc away): HST – NASA, Press release, 08.04.2010 ...
"Stars" Power Point notes
... • One AU is the average distance between the Sun and Earth. • A light-year is the distance light travels in one year: 9,500,000,000,000 km or 63,000 AU. ...
... • One AU is the average distance between the Sun and Earth. • A light-year is the distance light travels in one year: 9,500,000,000,000 km or 63,000 AU. ...
Life Cycle of STARS
... that has collapsed under gravity to the point at which all of its particles are neutrons is called a neutron star. If a neutron star is spinning, it is called a pulsar. • Black Holes A black hole is an object that is so massive that even light cannot escape its gravity. ...
... that has collapsed under gravity to the point at which all of its particles are neutrons is called a neutron star. If a neutron star is spinning, it is called a pulsar. • Black Holes A black hole is an object that is so massive that even light cannot escape its gravity. ...
Course Expectations
... How stars create and distribute heavy elements The difference between absolute and apparent magnitude How stars evolve off the main sequence on the HR Diagram The types of stars High mass stars produce supernovae, neutron stars and black holes Low mass stars produce white dwarfs, and planetary nebul ...
... How stars create and distribute heavy elements The difference between absolute and apparent magnitude How stars evolve off the main sequence on the HR Diagram The types of stars High mass stars produce supernovae, neutron stars and black holes Low mass stars produce white dwarfs, and planetary nebul ...
Characteristics of Stars (Ph)
... trip! Yet the next nearest star, Proxima Centauri, is much farther away—a trip to Proxima Centauri would take 4.2 years! Most stars are much farther away than Proxima Centauri. Our sun and Proxima Centauri are only two of the stars that make up the Milky Way. The Milky Way is a giant flat struct ...
... trip! Yet the next nearest star, Proxima Centauri, is much farther away—a trip to Proxima Centauri would take 4.2 years! Most stars are much farther away than Proxima Centauri. Our sun and Proxima Centauri are only two of the stars that make up the Milky Way. The Milky Way is a giant flat struct ...
Chapter 12: Measuring the Properties of Stars
... 3. It is fairly easy to identify this class of stars, now named Cepheid variables or Cepheids. Each Cepheid has a very constant period of variation, ranging from about 1 day to about 3 months for different Cepheids. 4. In 1908 Henrietta Leavitt discovered that for Cepheids in the Magellanic Clouds, ...
... 3. It is fairly easy to identify this class of stars, now named Cepheid variables or Cepheids. Each Cepheid has a very constant period of variation, ranging from about 1 day to about 3 months for different Cepheids. 4. In 1908 Henrietta Leavitt discovered that for Cepheids in the Magellanic Clouds, ...
Summary Of the Structure of the Milky Way
... • The Distribution of stars can reveal part of the disk-like nature of the Milky Way galaxy, but are not “deep” enough probes to fully reveal the structure of the Milky Way. • Open clusters can define the thickness of the Milky Way’s thin disk where star formation is active. • Globular clusters allo ...
... • The Distribution of stars can reveal part of the disk-like nature of the Milky Way galaxy, but are not “deep” enough probes to fully reveal the structure of the Milky Way. • Open clusters can define the thickness of the Milky Way’s thin disk where star formation is active. • Globular clusters allo ...
Grand Tour Worksheet - School District of La Crosse
... 7. The astronomer is able to observe stuff in space which can be reproduced on earth, give an example ...
... 7. The astronomer is able to observe stuff in space which can be reproduced on earth, give an example ...
Lecture 7
... 4) Galaxies, groups, clusters, walls, and superclusters all formed from gravity acting on matter in the Universe, much as stars form from clumps of gas within galaxies. We will see computer simulations of this later. 5) The density of neighbors around a galaxy is called its environment. These range ...
... 4) Galaxies, groups, clusters, walls, and superclusters all formed from gravity acting on matter in the Universe, much as stars form from clumps of gas within galaxies. We will see computer simulations of this later. 5) The density of neighbors around a galaxy is called its environment. These range ...
QSOs . Continuum Radiation Energy Source
... 300,000 x more stars per unit volume than in vicinity of Sun ...
... 300,000 x more stars per unit volume than in vicinity of Sun ...
Summary Of the Structure of the Milky Way
... RR Lyrae variables are periodic variable stars, commonly found in globular clusters, and often used as standard candles to measure galactic distances. • This type of variable is named after the prototype, the variable star RR Lyrae in the constellation Lyra. • RR Lyraes are pulsating horizontal bra ...
... RR Lyrae variables are periodic variable stars, commonly found in globular clusters, and often used as standard candles to measure galactic distances. • This type of variable is named after the prototype, the variable star RR Lyrae in the constellation Lyra. • RR Lyraes are pulsating horizontal bra ...
Star`s ReadingStar`s Reading(es)
... trip! Yet the next nearest star, Proxima Centauri, is much farther away—a trip to Proxima Centauri would take 4.2 years! Most stars are much farther away than Proxima Centauri. Our sun and Proxima Centauri are only two of the stars that make up the Milky Way. The Milky Way is a giant flat struct ...
... trip! Yet the next nearest star, Proxima Centauri, is much farther away—a trip to Proxima Centauri would take 4.2 years! Most stars are much farther away than Proxima Centauri. Our sun and Proxima Centauri are only two of the stars that make up the Milky Way. The Milky Way is a giant flat struct ...
The Mass of the Galaxy - University of California, Berkeley
... Sources of Radio Emission – 21 cm radiation Neutral hydrogen has a very weak radio spectral transition. So the Galaxy is transparent to it. On the other hand, there’s a lot of neutral hydrogen. So we can see it everywhere. There are also molecular lines from CO and ...
... Sources of Radio Emission – 21 cm radiation Neutral hydrogen has a very weak radio spectral transition. So the Galaxy is transparent to it. On the other hand, there’s a lot of neutral hydrogen. So we can see it everywhere. There are also molecular lines from CO and ...
Cosmic distance ladder
The cosmic distance ladder (also known as the extragalactic distance scale) is the succession of methods by which astronomers determine the distances to celestial objects. A real direct distance measurement of an astronomical object is possible only for those objects that are ""close enough"" (within about a thousand parsecs) to Earth. The techniques for determining distances to more distant objects are all based on various measured correlations between methods that work at close distances and methods that work at larger distances. Several methods rely on a standard candle, which is an astronomical object that has a known luminosity.The ladder analogy arises because no one technique can measure distances at all ranges encountered in astronomy. Instead, one method can be used to measure nearby distances, a second can be used to measure nearby to intermediate distances, and so on. Each rung of the ladder provides information that can be used to determine the distances at the next higher rung.