Chapter 15 Surveying the Stars
... • The light curve of this pulsating variable star shows that its brightness alternately rises and falls over a ...
... • The light curve of this pulsating variable star shows that its brightness alternately rises and falls over a ...
Lives of stars HR
... When a higher mass star can no longer produce internal pressure, it ejects the envelope in a violent explosion called a supernova. Supernova are so bright they can shine brighter than an entire galaxy, and they can be seen across the visible universe. ...
... When a higher mass star can no longer produce internal pressure, it ejects the envelope in a violent explosion called a supernova. Supernova are so bright they can shine brighter than an entire galaxy, and they can be seen across the visible universe. ...
Astronomy 10 Measuring Stars
... By carefully measuring their motions, we find that Sirius A is a bit more than twice the mass of the sun, and Sirius B is a little less than the mass of the sun. Sirius A turns out to be more massive, larger, hotter, and brighter than the sun. Sirius B, however, is about the same mass, much smaller, ...
... By carefully measuring their motions, we find that Sirius A is a bit more than twice the mass of the sun, and Sirius B is a little less than the mass of the sun. Sirius A turns out to be more massive, larger, hotter, and brighter than the sun. Sirius B, however, is about the same mass, much smaller, ...
November 2005 - Otterbein University
... • Some have names that go back to ancient times (e.g. Castor and Pollux, Greek mythology) • Some were named by Arab astronomers (e.g. Aldebaran, Algol, etc.) • Since the 17th century we use a scheme that lists stars by constellation – in order of their apparent brightness – labeled alphabetically in ...
... • Some have names that go back to ancient times (e.g. Castor and Pollux, Greek mythology) • Some were named by Arab astronomers (e.g. Aldebaran, Algol, etc.) • Since the 17th century we use a scheme that lists stars by constellation – in order of their apparent brightness – labeled alphabetically in ...
Star Show FACILITATOR NOTES
... closely matches the Sun’s spectrum must have a temperature very close to the temperature at the Sun’s visible surface—well over 5000°C. Except for specialized lights used in photography, most real light filaments operate at a lower temperature (around 2500°C) which gives a more reddish-orange color ...
... closely matches the Sun’s spectrum must have a temperature very close to the temperature at the Sun’s visible surface—well over 5000°C. Except for specialized lights used in photography, most real light filaments operate at a lower temperature (around 2500°C) which gives a more reddish-orange color ...
1 How luminous are stars?
... stars. Bright, hot, blue main-sequence stars (high-mass) are very rare. Giants and supergiants are extremely rare. ...
... stars. Bright, hot, blue main-sequence stars (high-mass) are very rare. Giants and supergiants are extremely rare. ...
Chapter 12: Measuring the Properties of Stars
... 9. Another group of variables, the RR Lyrae stars, are also used as distance candles. Their periods range from a few hours to one day and their luminosity is approximately constant. They are less luminous than the Cepheids and thus can only be seen to smaller distances. 10. Though only a few thousan ...
... 9. Another group of variables, the RR Lyrae stars, are also used as distance candles. Their periods range from a few hours to one day and their luminosity is approximately constant. They are less luminous than the Cepheids and thus can only be seen to smaller distances. 10. Though only a few thousan ...
Astronomical Distance Determination • etc.
... seen from far away. (They are not main sequence stars). A complication though is that there are two populations of Cepheids and they have different period luminosity ...
... seen from far away. (They are not main sequence stars). A complication though is that there are two populations of Cepheids and they have different period luminosity ...
File
... this is why they appear red to our eyes. This color is also seen in red giant stars which are larger in size and they are still colder. Station 3: Blue (Sirius & Vega) ...
... this is why they appear red to our eyes. This color is also seen in red giant stars which are larger in size and they are still colder. Station 3: Blue (Sirius & Vega) ...
Stars I
... away will be four times fainter – something 10 times further away will be 100 times fainter – something 1000 times further away will be a million times fainter ...
... away will be four times fainter – something 10 times further away will be 100 times fainter – something 1000 times further away will be a million times fainter ...
test - Scioly.org
... 4. What two kinds of information about a star’s outer atmosphere can you extract from a spectrum? 5. State Kepler’s 1st law of planetary motion: 6. State Kepler’s 2nd law of planetary motion: 7. State Kepler’s 3rd law of planetary motion: Questions 8-11 refer to the image on the attached page (Fig. ...
... 4. What two kinds of information about a star’s outer atmosphere can you extract from a spectrum? 5. State Kepler’s 1st law of planetary motion: 6. State Kepler’s 2nd law of planetary motion: 7. State Kepler’s 3rd law of planetary motion: Questions 8-11 refer to the image on the attached page (Fig. ...
Star Constellations
... some stars are smaller than our Sun, and some are larger. Except for our own Sun, all stars are so far away that they only look like single points—even through a telescope. Constellations ...
... some stars are smaller than our Sun, and some are larger. Except for our own Sun, all stars are so far away that they only look like single points—even through a telescope. Constellations ...
Stellar Evolution
... How does the pressure from fusion and hot gas interact with the force of gravity to maintain a star’s stability? The forces balance each other and keep the star in equilibrium. As gravity increases the pressure on the matter within a star, the rate of fusion increases. This increase in fusion causes ...
... How does the pressure from fusion and hot gas interact with the force of gravity to maintain a star’s stability? The forces balance each other and keep the star in equilibrium. As gravity increases the pressure on the matter within a star, the rate of fusion increases. This increase in fusion causes ...
Constellation Argo Navis
... Homunculus Nebula is a planetary nebula visible to the naked eye that is being ejected by the erratic luminous blue variable star Eta Carinae, the most massive visible star known. Eta Carinae is so massive that it has reached the theoretical upper limit for the mass of a star and is therefore unstab ...
... Homunculus Nebula is a planetary nebula visible to the naked eye that is being ejected by the erratic luminous blue variable star Eta Carinae, the most massive visible star known. Eta Carinae is so massive that it has reached the theoretical upper limit for the mass of a star and is therefore unstab ...
Document
... When astronomers look through their telescopes, they see billions of stars. What can they learn fromThe goal of this problem set is for you to understand that astronomers classify stars on the basis of two different criteria: (1) the intensity of one of the H absorption lines (called H), and (2) on ...
... When astronomers look through their telescopes, they see billions of stars. What can they learn fromThe goal of this problem set is for you to understand that astronomers classify stars on the basis of two different criteria: (1) the intensity of one of the H absorption lines (called H), and (2) on ...
E3 – Stellar distances
... • At distances greater than Mpc, neither parallax nor spectroscopic parallax can be relied upon to measure the distance to a star. • When we observe another galaxy, all of the stars in that galaxy are approximately the same distance away from the earth. What we really need is a light source of known ...
... • At distances greater than Mpc, neither parallax nor spectroscopic parallax can be relied upon to measure the distance to a star. • When we observe another galaxy, all of the stars in that galaxy are approximately the same distance away from the earth. What we really need is a light source of known ...
Lesson Plan - ScienceA2Z.com
... The International Astronomical Union (IAU) divides the sky into 88 official constellations with exact boundaries, so that every direction or place in the sky belongs within one constellation. In the northern hemisphere, these are mostly based upon the constellations of the ancient Greek tradition, p ...
... The International Astronomical Union (IAU) divides the sky into 88 official constellations with exact boundaries, so that every direction or place in the sky belongs within one constellation. In the northern hemisphere, these are mostly based upon the constellations of the ancient Greek tradition, p ...
Lecture 10 Advanced Variable Star Stuff March 18 2003 8:00 PM
... At least half of all "stars" in the sky are binary systems of some type. If their orbits are aligned with our line of sight, they may be eclipsing binaries. Easiest variable to understand: When both are visible, light is at maximum. When one is in front of the other, it blocks some of the light. ...
... At least half of all "stars" in the sky are binary systems of some type. If their orbits are aligned with our line of sight, they may be eclipsing binaries. Easiest variable to understand: When both are visible, light is at maximum. When one is in front of the other, it blocks some of the light. ...
Activity 4
... There are a number of ways to measure distances to stars and galaxies. One of the most important methods for measuring stellar distances is parallax. Parallax is the apparent motion of stars as ...
... There are a number of ways to measure distances to stars and galaxies. One of the most important methods for measuring stellar distances is parallax. Parallax is the apparent motion of stars as ...
Constellation ProjectConstellation Project(es)
... 7. What is the name of your Northern Hemisphere constellation? 8. What is your constellations coordinates? 9. What is the story of how your constellation got its name? (use the pdf “Stories of the con ...
... 7. What is the name of your Northern Hemisphere constellation? 8. What is your constellations coordinates? 9. What is the story of how your constellation got its name? (use the pdf “Stories of the con ...
Stars and Constellations
... The Milky Way is the galaxy which contains our solar system. On a summer evening you can see a dusty trail of stars stretching across the sky. This is our Milky Way galaxy consisting of hundreds of billions of stars. Instead of seeing each star individually, the combined light appears as a faded ba ...
... The Milky Way is the galaxy which contains our solar system. On a summer evening you can see a dusty trail of stars stretching across the sky. This is our Milky Way galaxy consisting of hundreds of billions of stars. Instead of seeing each star individually, the combined light appears as a faded ba ...
Chapter 19 Star Formation
... stars can profoundly affect their star cluster, as they can blow away dust and gas before it has time to collapse. ...
... stars can profoundly affect their star cluster, as they can blow away dust and gas before it has time to collapse. ...
Answers to Coursebook questions – Chapter E3
... The actual distance is greater than 10 pc and so the star appears dimmer than the equivalent of magnitude 0.8. Hence its apparent magnitude is greater than 0.8. d Or, from m M 5 log , we get m 0.8 5 log 4 3.8 . ...
... The actual distance is greater than 10 pc and so the star appears dimmer than the equivalent of magnitude 0.8. Hence its apparent magnitude is greater than 0.8. d Or, from m M 5 log , we get m 0.8 5 log 4 3.8 . ...
RR animation
... with a mass of around half the Sun's. They are thought to have previously shed mass and consequently, they were once stars with similar or slightly less mass than the Sun, around 0.8 solar masses. RR Lyrae stars pulse in a manner similar to Cepheid variables, so the mechanism for the pulsation is th ...
... with a mass of around half the Sun's. They are thought to have previously shed mass and consequently, they were once stars with similar or slightly less mass than the Sun, around 0.8 solar masses. RR Lyrae stars pulse in a manner similar to Cepheid variables, so the mechanism for the pulsation is th ...