![III. Contents of The Universe](http://s1.studyres.com/store/data/008085928_1-4c563471f9dddbfbc29a7f80611d4d9e-300x300.png)
III. Contents of The Universe
... Distance light travels in one year 1 ly = 6 trillion miles (6.0 x 1012) Light travels 3.0 x 108m/s or 186,000 mi/s Used for distance between stars, galaxies Closest star (after the sun) – Alpha Centauri (aka Proxima Centauri)- 4.3 ly ...
... Distance light travels in one year 1 ly = 6 trillion miles (6.0 x 1012) Light travels 3.0 x 108m/s or 186,000 mi/s Used for distance between stars, galaxies Closest star (after the sun) – Alpha Centauri (aka Proxima Centauri)- 4.3 ly ...
Star Powerpoint notes
... How near is the closest star other than the Sun? Proxima Centauri is about 40 trillion kilometers (25 trillion miles) away. It takes light about 4 years to reach the Earth from there. How luminous is the Sun compared with other stars? The most luminous stars are about a million times brighter and th ...
... How near is the closest star other than the Sun? Proxima Centauri is about 40 trillion kilometers (25 trillion miles) away. It takes light about 4 years to reach the Earth from there. How luminous is the Sun compared with other stars? The most luminous stars are about a million times brighter and th ...
Apparent Magnitude
... off 1000 times more light than Rigel!! SO..If Spica is giving off more light, why would it appear dimmer in the sky here at Earth? ...
... off 1000 times more light than Rigel!! SO..If Spica is giving off more light, why would it appear dimmer in the sky here at Earth? ...
12 - BYU Physics and Astronomy
... maintained for a time interval t so that N = λt pulses are detected. If the observation is repeated several times there should be a standard deviation in the measurements of σ1 = (λt)½ = N ½, i.e., for a particular count N has a probability of about 2/3 of being with within σ1 of λt, or the uncertai ...
... maintained for a time interval t so that N = λt pulses are detected. If the observation is repeated several times there should be a standard deviation in the measurements of σ1 = (λt)½ = N ½, i.e., for a particular count N has a probability of about 2/3 of being with within σ1 of λt, or the uncertai ...
Blowing Bubbles in Space: The Birth and Death of Practically
... Planetary Nebulae • Planetary nebulae are the final stages in the lives of low-mass stars, such as our Sun. As they reach the ends of their lives, their late RGB superwinds send off large amounts of material into space. Although the nebulae can look like a fireworks display, the process of developi ...
... Planetary Nebulae • Planetary nebulae are the final stages in the lives of low-mass stars, such as our Sun. As they reach the ends of their lives, their late RGB superwinds send off large amounts of material into space. Although the nebulae can look like a fireworks display, the process of developi ...
Replenishing the ISM - Stockton University
... 100 to 1000 grains per cubic Km Content: Grains of 106 to 109 atoms of carbon, silicates, nanodiamonds, iron. ...
... 100 to 1000 grains per cubic Km Content: Grains of 106 to 109 atoms of carbon, silicates, nanodiamonds, iron. ...
Chapter 2 Knowing the Heavens
... (Polaris) does not appear to move. • Stars in the northern sky seem to move in a counter-clockwise sense. • Northern stars that never set are called circumpolar stars. ...
... (Polaris) does not appear to move. • Stars in the northern sky seem to move in a counter-clockwise sense. • Northern stars that never set are called circumpolar stars. ...
Final Study Guide
... 20. What can the doppler effect tell us about stars and galaxies? How does this work? 21. Compare and contrast elliptical galaxies and spiral galaxies. 22. Discuss the process of differentiation, and how we can know about the interior of the earth. 23. What is meant by the “runaway greenhouse effect ...
... 20. What can the doppler effect tell us about stars and galaxies? How does this work? 21. Compare and contrast elliptical galaxies and spiral galaxies. 22. Discuss the process of differentiation, and how we can know about the interior of the earth. 23. What is meant by the “runaway greenhouse effect ...
Planets Beyond the Solar System
... Van de Kamp’s planet finding was overturned, but, after years of searching, NASA astronomers at Palomar Observatory identified an exoplanet using astrometry in 2009. It is a gas giant (about 6x Jupiter’s mass) called VB 10b and is about 20 light-years away in the constellation Aquila. It is orbit ...
... Van de Kamp’s planet finding was overturned, but, after years of searching, NASA astronomers at Palomar Observatory identified an exoplanet using astrometry in 2009. It is a gas giant (about 6x Jupiter’s mass) called VB 10b and is about 20 light-years away in the constellation Aquila. It is orbit ...
Planets Beyond the Solar System
... Van de Kamp’s planet finding was overturned, but, after years of searching, NASA astronomers at Palomar Observatory identified an exoplanet using astrometry in 2009. It is a gas giant (about 6x Jupiter’s mass) called VB 10b and is about 20 light-years away in the constellation Aquila. It is orbit ...
... Van de Kamp’s planet finding was overturned, but, after years of searching, NASA astronomers at Palomar Observatory identified an exoplanet using astrometry in 2009. It is a gas giant (about 6x Jupiter’s mass) called VB 10b and is about 20 light-years away in the constellation Aquila. It is orbit ...
Supplemental Resources - Morehead Planetarium and Science
... These are stars with just a fraction of the mass of our Sun (as low as 7.5% the mass of the Sun). They don’t burn as hot in their cores, and their surface temperature is about 3,500 Kelvin. The light released from their surface looks mostly red to our eyes (although there are different colors mixed ...
... These are stars with just a fraction of the mass of our Sun (as low as 7.5% the mass of the Sun). They don’t burn as hot in their cores, and their surface temperature is about 3,500 Kelvin. The light released from their surface looks mostly red to our eyes (although there are different colors mixed ...
HighRedshiftGalaxies
... statistical samples: the signal is too weak to be detected in individual cases, unless a strong lensing feature is seen. ...
... statistical samples: the signal is too weak to be detected in individual cases, unless a strong lensing feature is seen. ...
lec03_30sep2011
... -~7% of solar-type stars have >Mj planets in the “terrestrial planet” region. Extrapolation of current incompeteness suggests >12% w/planets @ <20 AU. - multiple planetary systems are ~common - planetary resonances are ~common ...
... -~7% of solar-type stars have >Mj planets in the “terrestrial planet” region. Extrapolation of current incompeteness suggests >12% w/planets @ <20 AU. - multiple planetary systems are ~common - planetary resonances are ~common ...
Reading the Stars
... 4. Write up a summary of the sequence you have derived from the data. Include any other information you know about these various stages in stellar evolution: the type of nuclear fusion going on in the core (if at all), the size and temperature, relative to the previous stage. [Type answer here] OPTI ...
... 4. Write up a summary of the sequence you have derived from the data. Include any other information you know about these various stages in stellar evolution: the type of nuclear fusion going on in the core (if at all), the size and temperature, relative to the previous stage. [Type answer here] OPTI ...
Approximately 14 billion years ago, all matter and energy was
... around 10 times the diameter of the Sun higher luminosity than the Sun relatively low temperature late stage of small to medium sized stars ...
... around 10 times the diameter of the Sun higher luminosity than the Sun relatively low temperature late stage of small to medium sized stars ...
Science 9: Unit E: Space Exploration
... Earth. Therefore the two angle measurements must be made six months apart. Parallax is the apparent change in position of the stars as the Earth moves along in its orbit. A limitation of triangulating is that it can only be used on nearby stars. ...
... Earth. Therefore the two angle measurements must be made six months apart. Parallax is the apparent change in position of the stars as the Earth moves along in its orbit. A limitation of triangulating is that it can only be used on nearby stars. ...
Lecture 6
... • Based on the definition of a parsec , if star A has a parallax of 0.5 arcseconds and star B has a parallax of 0.75 arcseconds which one is farther from the Earth? • A. Star B is farther away because it has a ...
... • Based on the definition of a parsec , if star A has a parallax of 0.5 arcseconds and star B has a parallax of 0.75 arcseconds which one is farther from the Earth? • A. Star B is farther away because it has a ...
IK Pegasi
![](https://commons.wikimedia.org/wiki/Special:FilePath/Location_of_IK_Pegasi.png?width=300)
IK Pegasi (or HR 8210) is a binary star system in the constellation Pegasus. It is just luminous enough to be seen with the unaided eye, at a distance of about 150 light years from the Solar System.The primary (IK Pegasi A) is an A-type main-sequence star that displays minor pulsations in luminosity. It is categorized as a Delta Scuti variable star and it has a periodic cycle of luminosity variation that repeats itself about 22.9 times per day. Its companion (IK Pegasi B) is a massive white dwarf—a star that has evolved past the main sequence and is no longer generating energy through nuclear fusion. They orbit each other every 21.7 days with an average separation of about 31 million kilometres, or 19 million miles, or 0.21 astronomical units (AU). This is smaller than the orbit of Mercury around the Sun.IK Pegasi B is the nearest known supernova progenitor candidate. When the primary begins to evolve into a red giant, it is expected to grow to a radius where the white dwarf can accrete matter from the expanded gaseous envelope. When the white dwarf approaches the Chandrasekhar limit of 1.44 solar masses (M☉), it may explode as a Type Ia supernova.