Study Guide
... White dwarfs, main sequence, giants, supergiants (be able to use the H-R diagram to label and classify) List the spectral classes for stars in order. O,B,A,F,G,K,M State the name and shape of our galaxy. The Milky Way – it is spiral shaped Describe the nuclear fusion reaction that takes place ...
... White dwarfs, main sequence, giants, supergiants (be able to use the H-R diagram to label and classify) List the spectral classes for stars in order. O,B,A,F,G,K,M State the name and shape of our galaxy. The Milky Way – it is spiral shaped Describe the nuclear fusion reaction that takes place ...
10438 starlight - The Described and Captioned Media Program
... nuclear physics, and theoretical physics. In this program, viewers examine how our basic knowledge about stars has been gained from studying the light we receive from stars. The study of starlight not only reveals straightforward information like the varying brightness of stars, but it also shows ot ...
... nuclear physics, and theoretical physics. In this program, viewers examine how our basic knowledge about stars has been gained from studying the light we receive from stars. The study of starlight not only reveals straightforward information like the varying brightness of stars, but it also shows ot ...
Astronomy 101 Course Review and Summary
... force, and inversely proportional to mass. (3) For every action, there is an equal and opposite reaction. Law of Gravity: The gravitational force between masses M and m, separated by distance r, is proportional to the product of the masses divided by the square of the separation ...
... force, and inversely proportional to mass. (3) For every action, there is an equal and opposite reaction. Law of Gravity: The gravitational force between masses M and m, separated by distance r, is proportional to the product of the masses divided by the square of the separation ...
Today`s Powerpoint
... fast depends on mass of H available and rate of fusion. Mass of H in core depends on mass of star. Fusion rate is related to luminosity (fusion reactions make the radiation energy). ...
... fast depends on mass of H available and rate of fusion. Mass of H in core depends on mass of star. Fusion rate is related to luminosity (fusion reactions make the radiation energy). ...
Chapter19
... the cycle begins anew. AGB stars have thick, cool dust shells around them that absorb their visible light and re-emit it in the infrared. The gas in the planetary nebula was shed from the star while it was an AGB star. The star must be hot in order to produce ultraviolet radiation, which can ionize ...
... the cycle begins anew. AGB stars have thick, cool dust shells around them that absorb their visible light and re-emit it in the infrared. The gas in the planetary nebula was shed from the star while it was an AGB star. The star must be hot in order to produce ultraviolet radiation, which can ionize ...
![31 — Main-Sequence Stars [Revision : 1.1]](http://s1.studyres.com/store/data/015926256_1-97d746cbe97ccc13b433136b208bf071-300x300.png)
31 — Main-Sequence Stars [Revision : 1.1]
... ∗ Low-mass stars have smoothly varying abundance change ∗ High-mass stars have discontinuous abundance chage (although discontinuity smeared out by core shrinkage), due to convective mixing ∗ Very-low-mass stars (. 0.3 M ) are completely mixed by convection; this gives very long ages • End of main ...
... ∗ Low-mass stars have smoothly varying abundance change ∗ High-mass stars have discontinuous abundance chage (although discontinuity smeared out by core shrinkage), due to convective mixing ∗ Very-low-mass stars (. 0.3 M ) are completely mixed by convection; this gives very long ages • End of main ...
Section 1
... Although the fundamental physical properties are parameters such as M , R, and L, these translate into observational parameters such as absolute magnitude and colour index (cf. Appendix E), or spectral type. The ultimate goal is to relate these observationally accessible quantities to the physical p ...
... Although the fundamental physical properties are parameters such as M , R, and L, these translate into observational parameters such as absolute magnitude and colour index (cf. Appendix E), or spectral type. The ultimate goal is to relate these observationally accessible quantities to the physical p ...
Observational Constraints The Nebular Hypothesis
... 1. Small dust grains grow into larger—but still relatively small—asteroid-like bodies called planetesimals. 2. Planetesimals repeated crash into each other, resulting in increasingly large planetesimals. Some of these objects grow large enough to be called protoplanets. 3. As the protoplanets grow t ...
... 1. Small dust grains grow into larger—but still relatively small—asteroid-like bodies called planetesimals. 2. Planetesimals repeated crash into each other, resulting in increasingly large planetesimals. Some of these objects grow large enough to be called protoplanets. 3. As the protoplanets grow t ...
Surveying the Stars
... • 19th century astronomer N.R. Pogson proposed a formula which captures the essence of the Greek idea. • A mag=2 star is 2.5 times brighter than a mag=3 star, and a mag 3 star is 2.5 times brighter than a mag=4 star, etc. • If you imagine moving a star to a standard distance of 10 parsecs, the appar ...
... • 19th century astronomer N.R. Pogson proposed a formula which captures the essence of the Greek idea. • A mag=2 star is 2.5 times brighter than a mag=3 star, and a mag 3 star is 2.5 times brighter than a mag=4 star, etc. • If you imagine moving a star to a standard distance of 10 parsecs, the appar ...
The Search for Another Earth The Search for Another Earth
... zone of Sun-like stars. The bigger challenge is to find planets in the habitable zone of their stars where liquid water and possibly life might exist. To date, Kepler has confirmed 297 planet candidates in the habitable zone. It appears that some of these planets have water present. ...
... zone of Sun-like stars. The bigger challenge is to find planets in the habitable zone of their stars where liquid water and possibly life might exist. To date, Kepler has confirmed 297 planet candidates in the habitable zone. It appears that some of these planets have water present. ...
AyC10 Fall 2007: Midterm 2 Review Sheet
... point of view; it’s the different observer who notices unusual time-slowing and redshifting effects. Likewise, if you cross the event horizon (assuming you survive the tidal stretching—which can be mild for very massive black holes—yes, more massive means weaker tidal effects in this case), you will ...
... point of view; it’s the different observer who notices unusual time-slowing and redshifting effects. Likewise, if you cross the event horizon (assuming you survive the tidal stretching—which can be mild for very massive black holes—yes, more massive means weaker tidal effects in this case), you will ...
Study Guide: Solar System
... systems orbiting in perfect circles b. Copernicus: Proposed that the Sun was the center (heliocentric model) of the solar systems orbiting in perfect circles c. Kepler: Supported the heliocentric model but discovered that the orbits of the planets were not circular but elliptical. d. Galileo: W ...
... systems orbiting in perfect circles b. Copernicus: Proposed that the Sun was the center (heliocentric model) of the solar systems orbiting in perfect circles c. Kepler: Supported the heliocentric model but discovered that the orbits of the planets were not circular but elliptical. d. Galileo: W ...
White Dwarfs - Indiana University
... – Proper motions of Sirius and Procyon wobble – Suggested they orbited “dark stars” – Found Sirius B at Northwestern’s Dearborn Observatory – Was it a star that had cooled and dimmed? ...
... – Proper motions of Sirius and Procyon wobble – Suggested they orbited “dark stars” – Found Sirius B at Northwestern’s Dearborn Observatory – Was it a star that had cooled and dimmed? ...
How Long is a Light Year?
... While the sun is often referred to as the most important star within our solar system, it is certainly not the only one. There are too many stars for us to even begin to count (see how many you can count while gazing up at the sky on a clear night). Not only are there too many stars to count, but th ...
... While the sun is often referred to as the most important star within our solar system, it is certainly not the only one. There are too many stars for us to even begin to count (see how many you can count while gazing up at the sky on a clear night). Not only are there too many stars to count, but th ...
Module G - U1_ L3 - Life Cycle of Stars
... • Giant stars shine brightly because of their large surface areas. • Giants are at least 10 times the size of the sun. • Low-mass stars, which contain about as much mass as the sun, will become red giants. • Over time, a giant’s outer gases drift away, and the remaining core collapses, becoming dens ...
... • Giant stars shine brightly because of their large surface areas. • Giants are at least 10 times the size of the sun. • Low-mass stars, which contain about as much mass as the sun, will become red giants. • Over time, a giant’s outer gases drift away, and the remaining core collapses, becoming dens ...
A105 Stars and Galaxies
... What about Massive Stars? • Massive stars continue to generate energy by nuclear reactions until they have converted all the hydrogen and helium in their cores into iron. • Once the core is iron, no more energy can be generated • The core collapses and the star explodes ...
... What about Massive Stars? • Massive stars continue to generate energy by nuclear reactions until they have converted all the hydrogen and helium in their cores into iron. • Once the core is iron, no more energy can be generated • The core collapses and the star explodes ...
Interstellar clouds
... • As a protostar radiates out thermal energy it shrinks, and the center becomes more dense. • As more material falls on the protostar it contracts, temperature and pressure in the core climb until fusion of hydrogen begins. • A star is cable of nuclear fusion. ...
... • As a protostar radiates out thermal energy it shrinks, and the center becomes more dense. • As more material falls on the protostar it contracts, temperature and pressure in the core climb until fusion of hydrogen begins. • A star is cable of nuclear fusion. ...
Stars - Trimble County Schools
... Constellation stars • Astronomers use constellations to locate particular stars • Stars within a constellation are named according to apparent magnitude – Brightest star is labeled alpha – Next brightest beta and so on ...
... Constellation stars • Astronomers use constellations to locate particular stars • Stars within a constellation are named according to apparent magnitude – Brightest star is labeled alpha – Next brightest beta and so on ...
BV Color Index and Temperature - The University of Texas at Dallas
... • B-V color index way of quantifying this - determining spectral class using two different filters Ø one a blue (B) filter that only lets a narrow range of colors or wavelengths through centered on the blue colors, Ø and a “visual” (V) filter that only lets the wavelengths close to the ...
... • B-V color index way of quantifying this - determining spectral class using two different filters Ø one a blue (B) filter that only lets a narrow range of colors or wavelengths through centered on the blue colors, Ø and a “visual” (V) filter that only lets the wavelengths close to the ...
Star Formation
... • The time required for an interstellar cloud to become a main sequence star depends strongly on its mass • The most massive O stars reach the 10 million Kelvin needed to start fusion in a million years (1/50 time taken by sun) • An M-type star less massive than our sun takes one billion years to fo ...
... • The time required for an interstellar cloud to become a main sequence star depends strongly on its mass • The most massive O stars reach the 10 million Kelvin needed to start fusion in a million years (1/50 time taken by sun) • An M-type star less massive than our sun takes one billion years to fo ...
SNC1P - MsKhan
... is in the middle), but it was discovered in the 16th century that it is ________________ (the Sun is in the middle, and the planets revolve around it). The distance from the Earth to the Sun is 150 000 000 km, or 1 ________________ unit (AU). Smaller objects in our Solar System include: asteroids -s ...
... is in the middle), but it was discovered in the 16th century that it is ________________ (the Sun is in the middle, and the planets revolve around it). The distance from the Earth to the Sun is 150 000 000 km, or 1 ________________ unit (AU). Smaller objects in our Solar System include: asteroids -s ...
slides
... almost entirely of hydrogen and helium, with just a tiny amount of lithium. Heavier elements are created by nuclear fusion within the cores of stars. ...
... almost entirely of hydrogen and helium, with just a tiny amount of lithium. Heavier elements are created by nuclear fusion within the cores of stars. ...
WK10revisedoneweek
... 1. Each planet moves in an ellipse, with the sun at one focus. 2. The line between the sun and the planet sweeps out equal areas in equal times. 3. The ratio of the cube of the average radius of a planets orbit to the square of its orbital period of revolution is the same for each planet. (Harmonic ...
... 1. Each planet moves in an ellipse, with the sun at one focus. 2. The line between the sun and the planet sweeps out equal areas in equal times. 3. The ratio of the cube of the average radius of a planets orbit to the square of its orbital period of revolution is the same for each planet. (Harmonic ...
ASTR2050 Spring 2005 •
... A certain telescope allows you to see a million times more light than your naked eye. What is the faintest magnitude star that you can see now? ...
... A certain telescope allows you to see a million times more light than your naked eye. What is the faintest magnitude star that you can see now? ...