Measuring Stars` Properties - Test 1 Study Guide
... (1 AU = distance Earth to Sun = 8 light minutes) • Close stars use stellar parallax (heliocentric parallax or triangulation ! same meaning) • Can “easily” measure distance using parallax to a few 100 LY. Need telescope: first observed in 1838. Study close stars in detail. Other techniques for dist ...
... (1 AU = distance Earth to Sun = 8 light minutes) • Close stars use stellar parallax (heliocentric parallax or triangulation ! same meaning) • Can “easily” measure distance using parallax to a few 100 LY. Need telescope: first observed in 1838. Study close stars in detail. Other techniques for dist ...
Section 1 Notes on Stars
... Interstellar gas and dust is ubiquitous the Galaxy • Interstellar gas and dust, which make up the interstellar medium (ISM), are concentrated in the disk of the Galaxy • Clouds within the interstellar medium are called nebulae • Dark nebulae are so dense that they are opaque ...
... Interstellar gas and dust is ubiquitous the Galaxy • Interstellar gas and dust, which make up the interstellar medium (ISM), are concentrated in the disk of the Galaxy • Clouds within the interstellar medium are called nebulae • Dark nebulae are so dense that they are opaque ...
Document
... Interstellar gas and dust is ubiquitous the Galaxy • Interstellar gas and dust, which make up the interstellar medium (ISM), are concentrated in the disk of the Galaxy • Clouds within the interstellar medium are called nebulae • Dark nebulae are so dense that they are opaque ...
... Interstellar gas and dust is ubiquitous the Galaxy • Interstellar gas and dust, which make up the interstellar medium (ISM), are concentrated in the disk of the Galaxy • Clouds within the interstellar medium are called nebulae • Dark nebulae are so dense that they are opaque ...
The Rigel Star - Emmi
... angry about the death of her companion, but forgave Apollo when he helped her hang his image in the sky so that he wouldn’t be forgotten. The Greeks said that this is why the constellation of Orion is visible in the winter, but wavers and vanishes when Scorpio appears in the summer. ...
... angry about the death of her companion, but forgave Apollo when he helped her hang his image in the sky so that he wouldn’t be forgotten. The Greeks said that this is why the constellation of Orion is visible in the winter, but wavers and vanishes when Scorpio appears in the summer. ...
Measuring the Properties of Stars (ch. 17)
... The only method for directly determining the masses of stars is from binary stars, using Newton’s form of Kepler’s 3rd law. There are three types of binary stars, which depend on how close they are to each other, their relative brightnesses, the distance of the binary, and other factors: a.Visual bi ...
... The only method for directly determining the masses of stars is from binary stars, using Newton’s form of Kepler’s 3rd law. There are three types of binary stars, which depend on how close they are to each other, their relative brightnesses, the distance of the binary, and other factors: a.Visual bi ...
globular cluster - Harding University
... result, we now know that objects are actually about 10% farther away than we previously had thought, i.e., the universe is about 10% larger than we thought. ...
... result, we now know that objects are actually about 10% farther away than we previously had thought, i.e., the universe is about 10% larger than we thought. ...
Stars III The Hertzsprung
... Note: there is another measure of stellar luminosity called Absolute Magnitude. We are not learning about it in this class, and you are not responsible to know about it. For the LT, answer questions about the Absolute Magnitude using the diagrams, but ...
... Note: there is another measure of stellar luminosity called Absolute Magnitude. We are not learning about it in this class, and you are not responsible to know about it. For the LT, answer questions about the Absolute Magnitude using the diagrams, but ...
Red Giants - Faculty Web Pages
... Most blue stars are Main Sequence stars. But whereas some red stars in the list are simply tiny, cool Main Sequence stars, other red stars of the exact same color are huge Red Giants! Telling the difference between the Main Sequence red stars and the Red Giant stars involves some complex measurement ...
... Most blue stars are Main Sequence stars. But whereas some red stars in the list are simply tiny, cool Main Sequence stars, other red stars of the exact same color are huge Red Giants! Telling the difference between the Main Sequence red stars and the Red Giant stars involves some complex measurement ...
Stars - CBSD.org
... Magnitudes • Hipparchus decided that all the brightest stars in the night sky were “first order magnitude” stars. • As they got dimmer, he classified them as “second magnitude,” “third magnitude,” and so on… • He got up to magnitude 6, after which stars are too dim to be seen without a telescope. • ...
... Magnitudes • Hipparchus decided that all the brightest stars in the night sky were “first order magnitude” stars. • As they got dimmer, he classified them as “second magnitude,” “third magnitude,” and so on… • He got up to magnitude 6, after which stars are too dim to be seen without a telescope. • ...
click here
... • Stars of given type of spectrum and the same colors have the same absolute magnitude (99.9%) • Stars have different apparent magnitudes depending on their distance. • Stars behind dust clouds look redder than they are intrinsically, so… m-M=5 log d1 –5+ A(l) (i.e., the star looks fainter) ...
... • Stars of given type of spectrum and the same colors have the same absolute magnitude (99.9%) • Stars have different apparent magnitudes depending on their distance. • Stars behind dust clouds look redder than they are intrinsically, so… m-M=5 log d1 –5+ A(l) (i.e., the star looks fainter) ...
Multiple Choice, continued
... • The galaxy in which we live, the Milky Way, is a spiral galaxy in which the sun is one of hundreds of billions of stars. • Two irregular galaxies, the Large Magellanic Cloud and Small Magellanic Cloud, are our closest neighbors. • These three galaxies are called the Local Group. ...
... • The galaxy in which we live, the Milky Way, is a spiral galaxy in which the sun is one of hundreds of billions of stars. • Two irregular galaxies, the Large Magellanic Cloud and Small Magellanic Cloud, are our closest neighbors. • These three galaxies are called the Local Group. ...
Stellar Evolution Chapter 12
... recent maximum can be used to predict the time of a future maximum. Suppose that you calculate the time of future maximum brightness and then make measurements to observe this maximum. After the correction for Earth's orbital position has been made, you find that the maximum occurred a few minutes l ...
... recent maximum can be used to predict the time of a future maximum. Suppose that you calculate the time of future maximum brightness and then make measurements to observe this maximum. After the correction for Earth's orbital position has been made, you find that the maximum occurred a few minutes l ...
Lecture 10: The Hertzsprung
... We know the masses for a few of the stars on the H-R diagram. When we plot the masses of the stars, we see that the main sequence is actually a mass sequence. More massive stars on the main sequence are hotter, low mass stars are cooler. Why? This is one of the things our model of how stars work nee ...
... We know the masses for a few of the stars on the H-R diagram. When we plot the masses of the stars, we see that the main sequence is actually a mass sequence. More massive stars on the main sequence are hotter, low mass stars are cooler. Why? This is one of the things our model of how stars work nee ...
Stars (Ch. 13)
... • But as we already know we can learn a lot from light! • Light can tell us about a star’s: ...
... • But as we already know we can learn a lot from light! • Light can tell us about a star’s: ...
Ch13_Lecture - Chemistry at Winthrop University
... understanding the H-R diagram – For stars of a given temperature, the larger the radius, the larger the luminosity – Therefore, as one moves up the H-R diagram, a star’s radius must become bigger – On the other hand, for a given luminosity, the larger the radius, the smaller the temperature – Theref ...
... understanding the H-R diagram – For stars of a given temperature, the larger the radius, the larger the luminosity – Therefore, as one moves up the H-R diagram, a star’s radius must become bigger – On the other hand, for a given luminosity, the larger the radius, the smaller the temperature – Theref ...
plagiarism - things to know - Science Department
... How to use the info without plagiarizing: surface would reach all the way out to Everything has a temperature, and Jupiter. Betelgeuse's color is bright red. everything radiates light, and the two are On the other hand, another supergiant not unconnected. In fact, the hotter a body star, Rigel, with ...
... How to use the info without plagiarizing: surface would reach all the way out to Everything has a temperature, and Jupiter. Betelgeuse's color is bright red. everything radiates light, and the two are On the other hand, another supergiant not unconnected. In fact, the hotter a body star, Rigel, with ...
PODEX – PhOtometric Data EXtractor
... All black-box procedures known to us (like IRAF or MOMF) are complicated to handle and provide only the extraction of instrumental magnitudes. For a complete reduction also a color dependent extinction correction and the conversion to relative magnitudes is needed. podex provides it. The podex sourc ...
... All black-box procedures known to us (like IRAF or MOMF) are complicated to handle and provide only the extraction of instrumental magnitudes. For a complete reduction also a color dependent extinction correction and the conversion to relative magnitudes is needed. podex provides it. The podex sourc ...
1/20/09 301 Physics Chapter 12 The Family of Stars Triangulation
... • Where s refers to the star and refers to the Sun • Given for Sirius Ls = 25L, Ts = 10,000 K, and for the Sun T= 6000 K, one finds Rs = 1.8R ...
... • Where s refers to the star and refers to the Sun • Given for Sirius Ls = 25L, Ts = 10,000 K, and for the Sun T= 6000 K, one finds Rs = 1.8R ...
Star Information ppt.
... These two stars have about the same luminosity -- which one appears brighter? A. Alpha Centauri B. The Sun ...
... These two stars have about the same luminosity -- which one appears brighter? A. Alpha Centauri B. The Sun ...
Full 11x8.5" Calendar, High Resolution - Chandra X
... Enormous arms of hot gas have been revealed in the Coma galaxy cluster in data from NASA’s Chandra X-ray Observatory and ESA’s XMM-Newton. A specially processed Chandra image (pink) has been combined with optical data from the Sloan Digital Sky Survey (white and blue) to highlight these spectacular ...
... Enormous arms of hot gas have been revealed in the Coma galaxy cluster in data from NASA’s Chandra X-ray Observatory and ESA’s XMM-Newton. A specially processed Chandra image (pink) has been combined with optical data from the Sloan Digital Sky Survey (white and blue) to highlight these spectacular ...
29-4 - Fremont Peak Observatory
... 14° 48.4’. R Lep is a “Carbon Star,” and as such it is a long period variable star. It is often called “Hind’s Crimson Star” because of its colour. British astronomer J. R. Hind first observed the star in 1845. Hind reported that the star appeared “like a drop of blood on a black field.” R Lep varie ...
... 14° 48.4’. R Lep is a “Carbon Star,” and as such it is a long period variable star. It is often called “Hind’s Crimson Star” because of its colour. British astronomer J. R. Hind first observed the star in 1845. Hind reported that the star appeared “like a drop of blood on a black field.” R Lep varie ...
Corona Australis
Corona Australis /kɵˈroʊnə ɒˈstreɪlɨs/ or Corona Austrina /kɵˈroʊnə ɒˈstraɪnə/ is a constellation in the Southern Celestial Hemisphere. Its Latin name means ""southern crown"", and it is the southern counterpart of Corona Borealis, the northern crown. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The Ancient Greeks saw Corona Australis as a wreath rather than a crown and associated it with Sagittarius or Centaurus. Other cultures have likened the pattern to a turtle, ostrich nest, a tent, or even a hut belonging to a rock hyrax.Although fainter than its namesake, the oval- or horseshoe-shaped pattern of its brighter stars renders it distinctive. Alpha and Beta Coronae Australis are the two brightest stars with an apparent magnitude of around 4.1. Epsilon Coronae Australis is the brightest example of a W Ursae Majoris variable in the southern sky. Lying alongside the Milky Way, Corona Australis contains one of the closest star-forming regions to our Solar System—a dusty dark nebula known as the Corona Australis Molecular Cloud, lying about 430 light years away. Within it are stars at the earliest stages of their lifespan. The variable stars R and TY Coronae Australis light up parts of the nebula, which varies in brightness accordingly.