www.NewYorkScienceTeacher.org/review
... Under the right conditions, when the CME arrived at Earth’s magnetosphere, energy would be released in the form of an intense auroral display. For an intense auroral display, the emission must encounter Earth’s magnetic field directly, as opposed to a glancing blow, and the magnetosphere must alread ...
... Under the right conditions, when the CME arrived at Earth’s magnetosphere, energy would be released in the form of an intense auroral display. For an intense auroral display, the emission must encounter Earth’s magnetic field directly, as opposed to a glancing blow, and the magnetosphere must alread ...
Hertzsprung Russell diagram
... the Sun, have been added to give a version like that shown here. It is a very useful way to display the properties of a star. Hot bright stars are towards the top left of the diagram while cool and dim stars are towards the bottom right. Some stars, like the supergiants are quite cool but because of ...
... the Sun, have been added to give a version like that shown here. It is a very useful way to display the properties of a star. Hot bright stars are towards the top left of the diagram while cool and dim stars are towards the bottom right. Some stars, like the supergiants are quite cool but because of ...
The Life of a Star - Department of Physics and Astronomy
... you’d be shining and how you’d be visible from halfway across the galaxy. But you mo-rons must not have bothered to read the fine print that said that you’d explode in seven million years! And if you did read it then you’re even stupider than you look. Seven million is not a long time!” » Eric Schul ...
... you’d be shining and how you’d be visible from halfway across the galaxy. But you mo-rons must not have bothered to read the fine print that said that you’d explode in seven million years! And if you did read it then you’re even stupider than you look. Seven million is not a long time!” » Eric Schul ...
The Milky Way – A Classic Galaxy
... • Hubble found globulars in Andromeda; they were roughly spherically distributed, and centered on the center of the galaxy. • In our own sky, we’d known for over a hundred years that globulars are strongly concentrated in the summer sky; hardly any in the winter sky. Ergo We must be far from the ce ...
... • Hubble found globulars in Andromeda; they were roughly spherically distributed, and centered on the center of the galaxy. • In our own sky, we’d known for over a hundred years that globulars are strongly concentrated in the summer sky; hardly any in the winter sky. Ergo We must be far from the ce ...
RED GIANTS
... Helium fusion begins at the center of a giant • While the exterior layers expand, the helium core continues to contract and eventually becomes hot enough (100 million kelvins) for helium to begin to fuse into carbon and oxygen – core helium fusion – 3 He a C + energy and C + He a O + energy – occur ...
... Helium fusion begins at the center of a giant • While the exterior layers expand, the helium core continues to contract and eventually becomes hot enough (100 million kelvins) for helium to begin to fuse into carbon and oxygen – core helium fusion – 3 He a C + energy and C + He a O + energy – occur ...
Today`s Class: Measuring temperatures of stars Astronomer`s
... 1. Hotter objects emit more light per unit area at all frequencies. 2. Hotter objects emit photons with a higher average energy. ...
... 1. Hotter objects emit more light per unit area at all frequencies. 2. Hotter objects emit photons with a higher average energy. ...
Model of Stars—5 Oct Outline •
... What can I do to make the same hot‐plate at the same setting burn my hand and not burn my hand? (Without modifying the sun, what can I do to make the sun brighter or fainter?) A. B. ...
... What can I do to make the same hot‐plate at the same setting burn my hand and not burn my hand? (Without modifying the sun, what can I do to make the sun brighter or fainter?) A. B. ...
Answers
... 4. Compared to when it joins the Main Sequence, a star’s mass at the end of its life will Be greater ...
... 4. Compared to when it joins the Main Sequence, a star’s mass at the end of its life will Be greater ...
Session Two - A Sidewalk Astronomer in Charlottetown
... difference is that a star is a point of light, whereas a galaxy has a larger apparent surface area. The entire luminosity of the object is summed over it's area. The magnitude is then the same as a point source like a star emitting the luminosity. Therefore, large objects appear dimmer than stars th ...
... difference is that a star is a point of light, whereas a galaxy has a larger apparent surface area. The entire luminosity of the object is summed over it's area. The magnitude is then the same as a point source like a star emitting the luminosity. Therefore, large objects appear dimmer than stars th ...
The night sky in October and November
... Astrophysicists believe that thermonuclear fusion creates the heavier elements, such as carbon, oxygen, iron, nitrogen, and so on, are created from the hydrogen and helium as the star burns itself up. These heavier elements are dispersed through the ...
... Astrophysicists believe that thermonuclear fusion creates the heavier elements, such as carbon, oxygen, iron, nitrogen, and so on, are created from the hydrogen and helium as the star burns itself up. These heavier elements are dispersed through the ...
Lecture 13
... These are Off the Main Sequence • Off the main sequence stellar properties depend on both mass and age. • These stars have finished fusing H to He in their cores are no longer on the main sequence. • They may be fusing He to Carbon in their core or fusing H to He in shell outside the core … but the ...
... These are Off the Main Sequence • Off the main sequence stellar properties depend on both mass and age. • These stars have finished fusing H to He in their cores are no longer on the main sequence. • They may be fusing He to Carbon in their core or fusing H to He in shell outside the core … but the ...
9binary1i
... Masses of Stars While we can find the radius of a star from the Stefan-Boltzmann Law, we still do not know the mass How do you find mass? On Earth we weigh things ...
... Masses of Stars While we can find the radius of a star from the Stefan-Boltzmann Law, we still do not know the mass How do you find mass? On Earth we weigh things ...
Part 1
... (A) gravitational influence on a companion star. (B) a dark spot in the field of stars. (C) X-ray emission from its accretion disk. (D) all of the above. (E) only (A) & (C). 16. What is the Chandrasekhar limit? (A) speed limit for photons (B) the maximum possible mass of a white dwarf (C) the distan ...
... (A) gravitational influence on a companion star. (B) a dark spot in the field of stars. (C) X-ray emission from its accretion disk. (D) all of the above. (E) only (A) & (C). 16. What is the Chandrasekhar limit? (A) speed limit for photons (B) the maximum possible mass of a white dwarf (C) the distan ...
Powerpoint Presentation (large file)
... • A high-mass star dies in a violent cataclysm in which its core collapses and most of its matter is ejected into space at high speeds • The luminosity of the star increases suddenly by a factor of around 108 during this explosion, producing a supernova • The matter ejected from the supernova, movin ...
... • A high-mass star dies in a violent cataclysm in which its core collapses and most of its matter is ejected into space at high speeds • The luminosity of the star increases suddenly by a factor of around 108 during this explosion, producing a supernova • The matter ejected from the supernova, movin ...
Extra-Solar Planets
... – Effect of Jupiter on the Sun gives a Vmax of ~20m/sec – BUT that of Earth is a 1/10 m – 30 times less than can be detected at present ...
... – Effect of Jupiter on the Sun gives a Vmax of ~20m/sec – BUT that of Earth is a 1/10 m – 30 times less than can be detected at present ...
(AU): Average distance from Earth to Sun
... if all stars same distance from Earth. Apparent Magnitude: How bright a star appears to be to an observer on Earth. - Depends on distance. Closer = brighter ...
... if all stars same distance from Earth. Apparent Magnitude: How bright a star appears to be to an observer on Earth. - Depends on distance. Closer = brighter ...
Big Bang and Life Cycle of Stars
... core which leads to burning at a higher temperature. These tend to be the brightest and hottest stars = Blue stars in the upper left corner of HR diagram. Small nebulas, produce small cool stars that are long lived. Less gravitational force, but strong enough for the core to produce fusion. These ar ...
... core which leads to burning at a higher temperature. These tend to be the brightest and hottest stars = Blue stars in the upper left corner of HR diagram. Small nebulas, produce small cool stars that are long lived. Less gravitational force, but strong enough for the core to produce fusion. These ar ...
5. cosmic distance ladder ii: standard candles
... candles – their luminosities are not known and consequently their distances cannot be easily calculated. However, some special types of variable and exploding stars do have known, standard luminosities. Consequently, if you can identify a star as being one of these special types, you know its lumino ...
... candles – their luminosities are not known and consequently their distances cannot be easily calculated. However, some special types of variable and exploding stars do have known, standard luminosities. Consequently, if you can identify a star as being one of these special types, you know its lumino ...
Learning Objectives
... candles – their luminosities are not known and consequently their distances cannot be easily calculated. However, some special types of variable and exploding stars do have known, standard luminosities. Consequently, if you can identify a star as being one of these special types, you know its lumino ...
... candles – their luminosities are not known and consequently their distances cannot be easily calculated. However, some special types of variable and exploding stars do have known, standard luminosities. Consequently, if you can identify a star as being one of these special types, you know its lumino ...
here - Stargazers Club
... Video - Habitable Exoplanets - Scientists use Radial Velocity (the Wobble method) to find exoplanets Exoplanets are extra solar planets, planets outside our solar system Wobble method - an orbiting planet will pull on its star, causing it to wobble as it rotates. We can detect this wiggle in the lig ...
... Video - Habitable Exoplanets - Scientists use Radial Velocity (the Wobble method) to find exoplanets Exoplanets are extra solar planets, planets outside our solar system Wobble method - an orbiting planet will pull on its star, causing it to wobble as it rotates. We can detect this wiggle in the lig ...
Document
... • When a star is approaching the Earth, the light waves will be compressed. • The wavelengths are shorter and are characteristic of blue and violet light. • If the star is moving away from Earth, the waves will be expanded. Longer wavelengths are characteristic of red light. • The spectrum of a star ...
... • When a star is approaching the Earth, the light waves will be compressed. • The wavelengths are shorter and are characteristic of blue and violet light. • If the star is moving away from Earth, the waves will be expanded. Longer wavelengths are characteristic of red light. • The spectrum of a star ...
PowerPoint
... Recent discoveries of planets orbiting stars rely on a type of problem known as an inverse problem. In the paper “A Celestial Cubic”, Charles Groetsch shows how the orbital radius and mass of an unseen planet circling a star can be obtained from the star’s spectral shift data, via the solution of a ...
... Recent discoveries of planets orbiting stars rely on a type of problem known as an inverse problem. In the paper “A Celestial Cubic”, Charles Groetsch shows how the orbital radius and mass of an unseen planet circling a star can be obtained from the star’s spectral shift data, via the solution of a ...
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.