Stellar Life Stages
... •heat from hydrogen fusion causes gas pressure inside the star to increase Gas molecules are always moving in random directions. What happens to them when gravity pushes down? What happens when the temp. ...
... •heat from hydrogen fusion causes gas pressure inside the star to increase Gas molecules are always moving in random directions. What happens to them when gravity pushes down? What happens when the temp. ...
Sequencing the Stars
... lists into one master list. I imported this master list into a plotting program (MATLAB) and made a plot of color versus luminosity. That plot is shown here. The main sequence is plainly evident! As with any wide-field image, there are several stars that do not belong to the object under study. In t ...
... lists into one master list. I imported this master list into a plotting program (MATLAB) and made a plot of color versus luminosity. That plot is shown here. The main sequence is plainly evident! As with any wide-field image, there are several stars that do not belong to the object under study. In t ...
Deducing Temperatures and Luminosities of Stars
... • Two otherwise identical stars (same radius, same temperature ⇒ same luminosity) will still appear vastly different in brightness if their distances from Earth are different • Reason: intensity of light inversely proportional to the square of the distance the light has to travel – Light waves from ...
... • Two otherwise identical stars (same radius, same temperature ⇒ same luminosity) will still appear vastly different in brightness if their distances from Earth are different • Reason: intensity of light inversely proportional to the square of the distance the light has to travel – Light waves from ...
Composition Of The Solar System
... Like the Milky Way, NGC 4414 is a giant spiral-shaped disk of stars, with a bulbous central hub of older yellow and red stars. The outer spiral arms are considerably bluer due to ongoing formation of young, blue stars, the brightest of which can be seen individually at the high resolution provided b ...
... Like the Milky Way, NGC 4414 is a giant spiral-shaped disk of stars, with a bulbous central hub of older yellow and red stars. The outer spiral arms are considerably bluer due to ongoing formation of young, blue stars, the brightest of which can be seen individually at the high resolution provided b ...
PowerPoint Presentation - Research in observational
... the first dredge-up • The expanding envelope is cool enough for molecules to form so that the opacity goes up and envelope convection sets in. • As the convective layer grows and extends from H-burning shell to surface, it brings to the surface the by products of H burning (a different N and 13C/12C ...
... the first dredge-up • The expanding envelope is cool enough for molecules to form so that the opacity goes up and envelope convection sets in. • As the convective layer grows and extends from H-burning shell to surface, it brings to the surface the by products of H burning (a different N and 13C/12C ...
3 rd stage of a star`s life = red giant
... Most average stars will blow away their outer atmospheres to form a planetary nebula. Shells of gas thrown out by some stars near the end of their lives ...
... Most average stars will blow away their outer atmospheres to form a planetary nebula. Shells of gas thrown out by some stars near the end of their lives ...
Merak
... How Far Away: 62 light years away How Bright: About 50 times brighter than the Sun Where to View: In the constellation Ursa Major. When to View:All year round in the Northern Hemisphere ...
... How Far Away: 62 light years away How Bright: About 50 times brighter than the Sun Where to View: In the constellation Ursa Major. When to View:All year round in the Northern Hemisphere ...
Wavelength
... Other stars are so much farther away that it is convenient to express the distance to them in units of the distance traveled by light in one year. This unit is called a light year. The next closest star to us is Proxima Centauri. This star is 4.3 light years away which means that light from it takes ...
... Other stars are so much farther away that it is convenient to express the distance to them in units of the distance traveled by light in one year. This unit is called a light year. The next closest star to us is Proxima Centauri. This star is 4.3 light years away which means that light from it takes ...
Sample exam 2
... sentence/paragraph format or a drawing, depending on what is asked. 11. The Sun started off its trajectory on the Hertzsprung-Russell diagram by initially moving down and to the left as it organized into a protostar. Explain this behavior in terms of temperature and luminosity, and give a reason for ...
... sentence/paragraph format or a drawing, depending on what is asked. 11. The Sun started off its trajectory on the Hertzsprung-Russell diagram by initially moving down and to the left as it organized into a protostar. Explain this behavior in terms of temperature and luminosity, and give a reason for ...
27.1: Characteristics of Stars
... Surface Temperature of a Star White stars have a surface temperatures ranging from 7,500 – 10,000°K White stars are NOT the same thing as white dwarfs! White dwarfs happen at the end of a star’s life, and they can be as hot as 100,000 °K! ...
... Surface Temperature of a Star White stars have a surface temperatures ranging from 7,500 – 10,000°K White stars are NOT the same thing as white dwarfs! White dwarfs happen at the end of a star’s life, and they can be as hot as 100,000 °K! ...
Answers - ddns.net
... The same period as the planets’ orbital periods. You should find relatively miniscule velocities and proper motions of the parent star due to their planets. Also, the period of the stars’ wobble is the same as the orbital period of the planets themselves, making planetary detections even more diffic ...
... The same period as the planets’ orbital periods. You should find relatively miniscule velocities and proper motions of the parent star due to their planets. Also, the period of the stars’ wobble is the same as the orbital period of the planets themselves, making planetary detections even more diffic ...
Origin of Our Solar System
... All planets revolve around the Sun in a counterclockwise direction within a 7° band of the equatorial region of the Sun, and nearly all of them also turn on their individual axes in a counterclockwise direction as well. ...
... All planets revolve around the Sun in a counterclockwise direction within a 7° band of the equatorial region of the Sun, and nearly all of them also turn on their individual axes in a counterclockwise direction as well. ...
Lecture 10: The Hertzsprung
... See also Figure 19-21 in your book There is a mass-luminosity relation on the main sequence. We can use that + a sample of stars where we get all the stars within a certain distance of the Sun to figure out how many stars of what masses are out there. Answer: Lots of low-mass stars! Very few high-m ...
... See also Figure 19-21 in your book There is a mass-luminosity relation on the main sequence. We can use that + a sample of stars where we get all the stars within a certain distance of the Sun to figure out how many stars of what masses are out there. Answer: Lots of low-mass stars! Very few high-m ...
Do you ever wonder why when you jump up, you always come back
... why the Moon keeps circling around Earth rather than drifting off into space? Throughout history, people have wondered about these things. Now we know that a property of the universe called “gravi ...
... why the Moon keeps circling around Earth rather than drifting off into space? Throughout history, people have wondered about these things. Now we know that a property of the universe called “gravi ...
What is a star?
... • Astronomers used telescopes see many stars that are too dim to see with the unaided eye. They added to the magnitude system. • Today, the brightest stars have a magnitude of about –2, and the faintest stars that we can see with a telescope have a magnitude of +30. • Dim stars have positive (larger ...
... • Astronomers used telescopes see many stars that are too dim to see with the unaided eye. They added to the magnitude system. • Today, the brightest stars have a magnitude of about –2, and the faintest stars that we can see with a telescope have a magnitude of +30. • Dim stars have positive (larger ...
1 WHY DO THE STARS IN ORION LOOK SO DIFFERENT FROM
... magnitude. In Table 1, apparent magnitude of a star, symbolized as mv, is represented by a numerical value. The smaller the number, the brighter the star. The brightest star in Table 1 is Rigel, with an mv of 0.12, which happens to also be the brightest star in the Orion constellation. The apparent ...
... magnitude. In Table 1, apparent magnitude of a star, symbolized as mv, is represented by a numerical value. The smaller the number, the brighter the star. The brightest star in Table 1 is Rigel, with an mv of 0.12, which happens to also be the brightest star in the Orion constellation. The apparent ...
Today`s Powerpoint
... a) cannot explain how the Sun is stable. b) detect only one-third the number of neutrinos expected by theory. c) cannot detect neutrinos easily. d) are unable to explain how neutrinos oscillate between other types. e) cannot create controlled fusion reactions on Earth. ...
... a) cannot explain how the Sun is stable. b) detect only one-third the number of neutrinos expected by theory. c) cannot detect neutrinos easily. d) are unable to explain how neutrinos oscillate between other types. e) cannot create controlled fusion reactions on Earth. ...
Planetarium Key Points
... Latitude is the elevation of the visible pole and, roughly, of Polaris The motion of the sphere was the source for time telling, but the time scale that comes from is NOT uniform: rotation is slowing down, the day is longer and longer at the rate of 2 ms a century From the motion we can distin ...
... Latitude is the elevation of the visible pole and, roughly, of Polaris The motion of the sphere was the source for time telling, but the time scale that comes from is NOT uniform: rotation is slowing down, the day is longer and longer at the rate of 2 ms a century From the motion we can distin ...
SCI 103
... Galileo observed four satellites orbiting Jupiter. This violated Aristotle’s precept of that all motion was around the centered Earth. Observation of Venus Galileo observed Venus going through phases that were correlated with its angular size indicating that Venus orbited the Sun. This violated Aris ...
... Galileo observed four satellites orbiting Jupiter. This violated Aristotle’s precept of that all motion was around the centered Earth. Observation of Venus Galileo observed Venus going through phases that were correlated with its angular size indicating that Venus orbited the Sun. This violated Aris ...
Possibilities for life elsewhere in the Solar System In our fifth
... We will therefore discuss many aspects of extrasolar planets. We will begin by considering how one detects them at all. We will then point out that the available detection techniques are strongly biased; in fact, only very recently have we been able to detect Earthsized planets around Sun-like stars ...
... We will therefore discuss many aspects of extrasolar planets. We will begin by considering how one detects them at all. We will then point out that the available detection techniques are strongly biased; in fact, only very recently have we been able to detect Earthsized planets around Sun-like stars ...
Distance and Luminosity (new 2012)
... centred on the point would have its entire interior surface illuminated. As the radius increases, the surface area will also increase, and the constant luminosity has more surface area to illuminate, leading to a decrease in observed or apparent brightness, b. ...
... centred on the point would have its entire interior surface illuminated. As the radius increases, the surface area will also increase, and the constant luminosity has more surface area to illuminate, leading to a decrease in observed or apparent brightness, b. ...