Stars and Light
... out) gravity will force the sun to collapse, which will increase the temperature so He can fuse (to form carbon). • When it does this, the outer layers “explode” and it becomes a Red Giant star. ...
... out) gravity will force the sun to collapse, which will increase the temperature so He can fuse (to form carbon). • When it does this, the outer layers “explode” and it becomes a Red Giant star. ...
EMR, Telescopes, Stars, Solar System study guide `14-15
... 11. Parallax is used to find the ____________________________ to nearby stars. 12. Astronomers use a ____________________ to break white light up into its characteristic colors. 13. Lines in a spectrum are used to find which ________________________ are in a star. 14. Main sequence stars are mainly ...
... 11. Parallax is used to find the ____________________________ to nearby stars. 12. Astronomers use a ____________________ to break white light up into its characteristic colors. 13. Lines in a spectrum are used to find which ________________________ are in a star. 14. Main sequence stars are mainly ...
SES4U Life Cycle of a Star
... Eventually become white dwarves (about the size of Earth) Steadily decrease in diameter throughout life (no creation of planetary nebulae, no expansion, no supernova) ...
... Eventually become white dwarves (about the size of Earth) Steadily decrease in diameter throughout life (no creation of planetary nebulae, no expansion, no supernova) ...
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The Milky Way - Midlandstech
... Mmax ~ 100 solar masses a) More massive clouds fragment into smaller pieces during star formation. ...
... Mmax ~ 100 solar masses a) More massive clouds fragment into smaller pieces during star formation. ...
Revolutionary Times: Copernicus and Tycho Brahe
... hollow tube will do. It has to be free to swing up and down. ...
... hollow tube will do. It has to be free to swing up and down. ...
Search for Student Research Assistant
... Hubble Space Telescope of this star system became public. The main investigator told me he is looking to study the gas in front of the star, and not the star itself, so that we are not duplicating his effort. I have a plan to study how the ultraviolet spectrum of the star itself is changing. There i ...
... Hubble Space Telescope of this star system became public. The main investigator told me he is looking to study the gas in front of the star, and not the star itself, so that we are not duplicating his effort. I have a plan to study how the ultraviolet spectrum of the star itself is changing. There i ...
The extragalactic universe and distance measurements
... – Tried to determine distribution of stars in Milky Way – described Milky Way as “detached nebula”, with Sun near center. – Thought that the nebulae could be similar systems – Turns out that his conclusions were heavily effected by dust in the Milky Way – Milky Way is much bigger and better ordered ...
... – Tried to determine distribution of stars in Milky Way – described Milky Way as “detached nebula”, with Sun near center. – Thought that the nebulae could be similar systems – Turns out that his conclusions were heavily effected by dust in the Milky Way – Milky Way is much bigger and better ordered ...
01.05.10 Centuries-Old Star Mystery Coming to a Close For almost
... meeting of the American Astronomical Meeting in Washington. Epsilon Aurigae can be seen at night from the northern hemisphere with the naked eye, even in some urban areas. Last August, it began its roughly two-year dimming, an event that happens like clockwork every 27.1 years and results in the sta ...
... meeting of the American Astronomical Meeting in Washington. Epsilon Aurigae can be seen at night from the northern hemisphere with the naked eye, even in some urban areas. Last August, it began its roughly two-year dimming, an event that happens like clockwork every 27.1 years and results in the sta ...
Solar System from Web
... of a galaxy that emits a much higher luminosity over the electromagnetic spectrum than most galaxies. Any galaxy containing an AGN is considered to be an Active Galaxy. This emission of energy is the result of the build up of mass at the galaxy’s massive black hole at its center. ...
... of a galaxy that emits a much higher luminosity over the electromagnetic spectrum than most galaxies. Any galaxy containing an AGN is considered to be an Active Galaxy. This emission of energy is the result of the build up of mass at the galaxy’s massive black hole at its center. ...
Constants and Equations
... a) AM CVn stars are binary systems with an orbital period of less than 65 minutes. b) AM CVn stars may produce a type II supernova after the white dwarf reaches a critical mass. c) AM CVn stars are sources of gravitational waves. d) AM CVn stars are binary systems where a white dwarf accretes mass f ...
... a) AM CVn stars are binary systems with an orbital period of less than 65 minutes. b) AM CVn stars may produce a type II supernova after the white dwarf reaches a critical mass. c) AM CVn stars are sources of gravitational waves. d) AM CVn stars are binary systems where a white dwarf accretes mass f ...
Stars & Constellations
... However some constellations can be seen all year round. Some, like Cassiopeia are circumpolar - this means they circle above the pole, so can always been seen (the Earth’s orbit around the sun does not ...
... However some constellations can be seen all year round. Some, like Cassiopeia are circumpolar - this means they circle above the pole, so can always been seen (the Earth’s orbit around the sun does not ...
Astronomy 111 – Lecture 2
... Ptolemy: – Mix of classical and modern themes from mythology to air pumps and hot air balloons. – Up to 150 constellations at one time. – Many defunct constellations (e.g., Felis the Cat) ...
... Ptolemy: – Mix of classical and modern themes from mythology to air pumps and hot air balloons. – Up to 150 constellations at one time. – Many defunct constellations (e.g., Felis the Cat) ...
Life Cycle of Stars
... Universe. For them, the temperature of the glow is almost zero and the energy loss is negligible. The time needed for the black holes to lose much of their mass is unimaginably long. However, if much smaller black holes ever existed in the Universe, then Hawking's findings would have been catastroph ...
... Universe. For them, the temperature of the glow is almost zero and the energy loss is negligible. The time needed for the black holes to lose much of their mass is unimaginably long. However, if much smaller black holes ever existed in the Universe, then Hawking's findings would have been catastroph ...
Grade Nine Planetarium script
... the bright star near the foot of Perseus' forward leg (the one towards Andromeda) consists of a pair of stars - one much dimmer than the other every 2 days and 21 hours the dimmer star passes right between us and the brighter star over a four-hour period, you can see Algol dim to about a tenth its n ...
... the bright star near the foot of Perseus' forward leg (the one towards Andromeda) consists of a pair of stars - one much dimmer than the other every 2 days and 21 hours the dimmer star passes right between us and the brighter star over a four-hour period, you can see Algol dim to about a tenth its n ...
Astr604-Ch1
... 1.2.3 Masses and radii of stars The mass of a star can be measured only by its gravitational effect. Under certain conditions, the mass of star that is member of a binary system can calculate based on spectral line shifts. The radii of a number of stars have been found directly from measurement of t ...
... 1.2.3 Masses and radii of stars The mass of a star can be measured only by its gravitational effect. Under certain conditions, the mass of star that is member of a binary system can calculate based on spectral line shifts. The radii of a number of stars have been found directly from measurement of t ...
The HR Diagram - Faculty Web Pages
... brightnesses. Now let's see if we can find some relationships between these stellar properties. We know that hotter stars are brighter, as described by the Stefan-Boltzmann Law, and we know that the hotter stars are also bluer, as described by Wien's Law. The H-R diagram is a way of displaying an im ...
... brightnesses. Now let's see if we can find some relationships between these stellar properties. We know that hotter stars are brighter, as described by the Stefan-Boltzmann Law, and we know that the hotter stars are also bluer, as described by Wien's Law. The H-R diagram is a way of displaying an im ...
HR Diagram and Life of a star
... temp This means that they are very large and can range in size from 100-1000 times the size of the sun GIANTS- large bright stars a bit smaller and fainter than Super giants Super giants in the Red temp range tend to be in their last stages of life. They are out of hydrogen and are now fusing Helium ...
... temp This means that they are very large and can range in size from 100-1000 times the size of the sun GIANTS- large bright stars a bit smaller and fainter than Super giants Super giants in the Red temp range tend to be in their last stages of life. They are out of hydrogen and are now fusing Helium ...
Back to basics: naked-eye astronomical observation
... only do they become familiar objects, enabling some degree of direction finding, but also the sight of the whole sphere of the Moon at a New Moon (due to Earthshine) can give a sense of scale and even the feeling of gravity holding this large ‘rock’ in orbit. A study of the Moon’s surface in binocul ...
... only do they become familiar objects, enabling some degree of direction finding, but also the sight of the whole sphere of the Moon at a New Moon (due to Earthshine) can give a sense of scale and even the feeling of gravity holding this large ‘rock’ in orbit. A study of the Moon’s surface in binocul ...
neutron star - Livonia Public Schools
... All stars, regardless of their size, eventually run out of fuel and collapse due to gravity. Death of Low-Mass Stars • Stars less than one-half the mass of the sun never evolve to the red giant stage but remain in the stable main-sequence stage until they consume all their hydrogen fuel and coll ...
... All stars, regardless of their size, eventually run out of fuel and collapse due to gravity. Death of Low-Mass Stars • Stars less than one-half the mass of the sun never evolve to the red giant stage but remain in the stable main-sequence stage until they consume all their hydrogen fuel and coll ...
Chapter20
... •After helium burning begins, a star has two sources of energy, hydrogen fusion in a shell around the core and helium fusion in the core •The core of the star becomes rich in carbon and oxygen nuclei, and the star's surface temperature goes up to become a horizontal branch star •Stars with masses gr ...
... •After helium burning begins, a star has two sources of energy, hydrogen fusion in a shell around the core and helium fusion in the core •The core of the star becomes rich in carbon and oxygen nuclei, and the star's surface temperature goes up to become a horizontal branch star •Stars with masses gr ...
Study Guide for 3RD Astronomy Exam
... Apply Wien’s Law to find the temperature of a star or its wavelength of maximum emission. Use the Stefan-Boltzmann Law to determine the luminosity, radius or temperature of a star compared to the Sun. Calculate the density of a star or other spherical object. Calculate the main sequence life ...
... Apply Wien’s Law to find the temperature of a star or its wavelength of maximum emission. Use the Stefan-Boltzmann Law to determine the luminosity, radius or temperature of a star compared to the Sun. Calculate the density of a star or other spherical object. Calculate the main sequence life ...
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.