So why are more massive stars more luminous?
... Over the past 4.56 ×109 years, much of the hydrogen in the Sun’s core has been converted into helium, the core has contracted a bit, and the Sun’s luminosity has gone up by about 40%. These changes in the core have made the Sun’s outer layers expand in radius by 6% and increased the surface tempera ...
... Over the past 4.56 ×109 years, much of the hydrogen in the Sun’s core has been converted into helium, the core has contracted a bit, and the Sun’s luminosity has gone up by about 40%. These changes in the core have made the Sun’s outer layers expand in radius by 6% and increased the surface tempera ...
Lecture21 - UCSB Physics
... has gone up by about 40%. These changes in the core have made the Sun’s outer layers expand in radius by 6% and increased the surface temperature from 5500 K to 5800 K. ...
... has gone up by about 40%. These changes in the core have made the Sun’s outer layers expand in radius by 6% and increased the surface temperature from 5500 K to 5800 K. ...
WEEK 8: CSI UCSC: ASTRO EDITION SOLUTIONS This week you
... (1) Compare Types I and II supernovae. What kinds of objects explode and what are their explosion mechanisms? There are two main types. The first one is Type Ia supernova, which comes from a white dwarf in a binary system with another star. A white dwarf may steal material from the companion star, a ...
... (1) Compare Types I and II supernovae. What kinds of objects explode and what are their explosion mechanisms? There are two main types. The first one is Type Ia supernova, which comes from a white dwarf in a binary system with another star. A white dwarf may steal material from the companion star, a ...
Binary Star - Armagh Observatory
... Red Giant: A red giant is a relatively old star whose diameter is about 100 times bigger than it was originally, and has become cooler (the surface temperature is under 6,500 K). They are frequently orange in colour. Betelgeuse is a red giant. It is about 20 times as massive as the Sun, but about ...
... Red Giant: A red giant is a relatively old star whose diameter is about 100 times bigger than it was originally, and has become cooler (the surface temperature is under 6,500 K). They are frequently orange in colour. Betelgeuse is a red giant. It is about 20 times as massive as the Sun, but about ...
Red Giants - Uplift North Hills Prep
... but much WHAT IS AMAZING: Stars of different masses fall along a brighter than narrow path in L/T diagram MS stars → Must be much larger ...
... but much WHAT IS AMAZING: Stars of different masses fall along a brighter than narrow path in L/T diagram MS stars → Must be much larger ...
Chapter 27 Stars and Galaxies
... 2. Elliptical: nearly spherical with very bright centers; no spiral arms No young stars, dust, or gas ...
... 2. Elliptical: nearly spherical with very bright centers; no spiral arms No young stars, dust, or gas ...
The Sun . . .
... where it expands and grows cooler and more luminous. Its final stage is white dwarf, after it collapses upon itself and only the hot, dense core will remain. ...
... where it expands and grows cooler and more luminous. Its final stage is white dwarf, after it collapses upon itself and only the hot, dense core will remain. ...
Exploring the Universe
... an H-R diagram where most stars spend 90% of their life. i. A diagonal band running from the bright, hot stars on the upper left to the dim, cool stars on the lower right ii. Example: The Sun lies in the main sequence ...
... an H-R diagram where most stars spend 90% of their life. i. A diagonal band running from the bright, hot stars on the upper left to the dim, cool stars on the lower right ii. Example: The Sun lies in the main sequence ...
The Lifecycle of the Stars
... *white dwarfs may only be the size of the earth, but it has the mass equal to half oh the sun. *it is the 6th stage in forming a star. Lifecycle of a star notes *also called a degenerate dwarf *it is a small star made up of electron-degenerate matter. http://en.wikipedia.org/wiki/White_dwarf Electro ...
... *white dwarfs may only be the size of the earth, but it has the mass equal to half oh the sun. *it is the 6th stage in forming a star. Lifecycle of a star notes *also called a degenerate dwarf *it is a small star made up of electron-degenerate matter. http://en.wikipedia.org/wiki/White_dwarf Electro ...
STAR TYPES
... 6,500 K). They are frequently orange in color. Betelgeuse is a red giant. It is about 20 times as massive as the Sun about 14,000 times brighter than the Sun, and about 600 light-years from Earth. BLUE GIANT A blue giant is a huge, very hot, blue star. It is a post-main sequence star that burns hel ...
... 6,500 K). They are frequently orange in color. Betelgeuse is a red giant. It is about 20 times as massive as the Sun about 14,000 times brighter than the Sun, and about 600 light-years from Earth. BLUE GIANT A blue giant is a huge, very hot, blue star. It is a post-main sequence star that burns hel ...
File - Mr. Fifield`s Corner
... Orbit is a regular, repeating path that one object in space takes as it revolves around another one. All orbits are elliptical, which means they are an ellipse, similar to an oval. These orbits result from gravitational forces ...
... Orbit is a regular, repeating path that one object in space takes as it revolves around another one. All orbits are elliptical, which means they are an ellipse, similar to an oval. These orbits result from gravitational forces ...
Recomendación de una estrategia
... Sometimes it's hard to believe what you see in the sky. During the Shelios Expedition to Greenland in late August, even veteran sky enthusiasts saw auroras so colorful, so fast changing, and so unusual in form that they could remember nothing like it. Some auroras evolve to seem what looks to be the ...
... Sometimes it's hard to believe what you see in the sky. During the Shelios Expedition to Greenland in late August, even veteran sky enthusiasts saw auroras so colorful, so fast changing, and so unusual in form that they could remember nothing like it. Some auroras evolve to seem what looks to be the ...
1. Stellar Evolution – Notes Astronomers classify stars according to
... The brightness of a star depends upon both its size and its temperature. How bright a star looks from Earth depends on both its distance from Earth and how bright the star actually is. The brightness of a star can be described in two different ways: apparent brightness and absolute brightness. A sta ...
... The brightness of a star depends upon both its size and its temperature. How bright a star looks from Earth depends on both its distance from Earth and how bright the star actually is. The brightness of a star can be described in two different ways: apparent brightness and absolute brightness. A sta ...
7th Grade Astronomy Study Guide
... a. The universe contracts and expands on a regular basis. b. The universe is getting smaller every day. c. Scientists do not know if the universe is getting larger or smaller. d. The universe is expanding outward. ____ 30. The color of a star depends on its a. magnitude. b. temperature. ...
... a. The universe contracts and expands on a regular basis. b. The universe is getting smaller every day. c. Scientists do not know if the universe is getting larger or smaller. d. The universe is expanding outward. ____ 30. The color of a star depends on its a. magnitude. b. temperature. ...
File
... • Since the objects in space are very far away, the angles x and y will be VERY close to each other • In fact, the difference in angles is usually measure in units called arcseconds – A degree is divided into 60 minutes, and a minute into 60 seconds, so an arcsecond is 1/3600th of a degree! – …and ...
... • Since the objects in space are very far away, the angles x and y will be VERY close to each other • In fact, the difference in angles is usually measure in units called arcseconds – A degree is divided into 60 minutes, and a minute into 60 seconds, so an arcsecond is 1/3600th of a degree! – …and ...
14_creationism
... Quantum mechanics says these electrons can only have discrete energies when they are orbiting the nucleus. A spectral line is emitted when an electron jumps from one energy to another. ...
... Quantum mechanics says these electrons can only have discrete energies when they are orbiting the nucleus. A spectral line is emitted when an electron jumps from one energy to another. ...
HR Diagram (Temperature Versus Absolute Magnitude)
... • Astronomical units can be used to measure distances within our solar systems ...
... • Astronomical units can be used to measure distances within our solar systems ...
ASTR-1020: Astronomy II Course Lecture Notes Section III
... And so on, for instance, if Fe had all but one electron taken away, it would be labeled as Fe XXVI. ...
... And so on, for instance, if Fe had all but one electron taken away, it would be labeled as Fe XXVI. ...
The Hidden Lives of Galaxies NSTA 2001
... This presentation, and other materials on the Life Cycles of Stars, are available on the Imagine the Universe! web site at: http://imagine.gsfc.nasa.gov/docs/teachers/lifecycles/stars.html ...
... This presentation, and other materials on the Life Cycles of Stars, are available on the Imagine the Universe! web site at: http://imagine.gsfc.nasa.gov/docs/teachers/lifecycles/stars.html ...
Lyra
Lyra (/ˈlaɪərə/; Latin for lyre, from Greek λύρα) is a small constellation. It is one of 48 listed by the 2nd century astronomer Ptolemy, and is one of the 88 constellations recognized by the International Astronomical Union. Lyra was often represented on star maps as a vulture or an eagle carrying a lyre, and hence sometimes referred to as Aquila Cadens or Vultur Cadens. Beginning at the north, Lyra is bordered by Draco, Hercules, Vulpecula, and Cygnus. Lyra is visible from the northern hemisphere from spring through autumn, and nearly overhead, in temperate latitudes, during the summer months. From the southern hemisphere, it is visible low in the northern sky during the winter months.The lucida or brightest star—and one of the brightest stars in the sky—is the white main sequence star Vega, a corner of the Summer Triangle. Beta Lyrae is the prototype of a class of stars known as Beta Lyrae variables, binary stars so close to each other that they become egg-shaped and material flows from one to the other. Epsilon Lyrae, known informally as the Double Double, is a complex multiple star system. Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.