Stars and Galaxies
... • Mass of massive stars 6x that of sun • Take same path as medium-sized stars except for after red giant stage they do not become white dwarfs • Carbon atoms continue to fuse creating heavier elements like oxygen & nitrogen • Core of massive star so hot that fusion continues until the heavy element ...
... • Mass of massive stars 6x that of sun • Take same path as medium-sized stars except for after red giant stage they do not become white dwarfs • Carbon atoms continue to fuse creating heavier elements like oxygen & nitrogen • Core of massive star so hot that fusion continues until the heavy element ...
Basic Properties of the Stars
... parallax shifts with respect to the distant background of stars. Tycho Brahe improved positional measures from +/- 10 arc minutes to as good as +/- 1 arc minute, but he could measure no parallaxes. This implied either that the stars were more than 3000 Astronomical Units away, or that the Earth was ...
... parallax shifts with respect to the distant background of stars. Tycho Brahe improved positional measures from +/- 10 arc minutes to as good as +/- 1 arc minute, but he could measure no parallaxes. This implied either that the stars were more than 3000 Astronomical Units away, or that the Earth was ...
Lecture Ten - The Sun Amongst the Stars Part II
... O-type stars have very few lines because they are so hot that most of their elements have been stripped of electrons – while in cooler, M-type stars, far more atoms retain their electrons. Patterns of absorption lines can reveal the temperatures of the stars to a precision within 50 degrees K – a f ...
... O-type stars have very few lines because they are so hot that most of their elements have been stripped of electrons – while in cooler, M-type stars, far more atoms retain their electrons. Patterns of absorption lines can reveal the temperatures of the stars to a precision within 50 degrees K – a f ...
answer key
... Astronomers initially (before 1920) classified stars by their hydrogen-line intensities and labelled them alphabetically A through P. “As” had a stronger hydrogen signature – hence were thought to have more hydrogen – than “Bs”, with “Ps” theoretically having the least hydrogen of all. As time went ...
... Astronomers initially (before 1920) classified stars by their hydrogen-line intensities and labelled them alphabetically A through P. “As” had a stronger hydrogen signature – hence were thought to have more hydrogen – than “Bs”, with “Ps” theoretically having the least hydrogen of all. As time went ...
Astronomy
... be able to predict which constellation will be visible at a given location in your sky at a given time be able to compare brightness of various stars ...
... be able to predict which constellation will be visible at a given location in your sky at a given time be able to compare brightness of various stars ...
EX - Uplift North Hills Prep
... (c) Explain, by reference to the Chandrasekhar limit, why the final stage of the evolutionary path of the Sun is at F. White dwarfs are found in region F of the HR diagram. Main sequence stars that end up with a mass under the Chandrasekhar limit of 1.4 solar masses will become white dwarfs. (d) On ...
... (c) Explain, by reference to the Chandrasekhar limit, why the final stage of the evolutionary path of the Sun is at F. White dwarfs are found in region F of the HR diagram. Main sequence stars that end up with a mass under the Chandrasekhar limit of 1.4 solar masses will become white dwarfs. (d) On ...
Stars and Stellar Evolution
... Light-year = distance light travels in a year (9.5 trillion kilometers) Parallax = slight shifting in the apparent position of a nearby star due to the orbital motion of the Earth ...
... Light-year = distance light travels in a year (9.5 trillion kilometers) Parallax = slight shifting in the apparent position of a nearby star due to the orbital motion of the Earth ...
Stellar Magnitudes and Distances
... • A star’s apparent magnitude (m) is how bright it appears at the earth’s surface. • A star’s absolute magnitude (M) is how bright it appears from a standard reference distance of 10 pc or 32.6 LY. • Since a star’s distance from the earth affects its apparent brightness, astronomers compare the brig ...
... • A star’s apparent magnitude (m) is how bright it appears at the earth’s surface. • A star’s absolute magnitude (M) is how bright it appears from a standard reference distance of 10 pc or 32.6 LY. • Since a star’s distance from the earth affects its apparent brightness, astronomers compare the brig ...
Astronomy Fall 2013 Final Exam History of Astronomy Know: speed
... Compared to our Sun, a typical white dwarf has __less__ mass. ...
... Compared to our Sun, a typical white dwarf has __less__ mass. ...
Astronomy 103
... the Sun and by 1863, it was known that these dark lines were identical to patterns of spectral lines from particular elements found on the Earth. (One set of lines failed to match the spectrum of any known element. The conclusion was that we were seeing an element on the Sun that had not been seen o ...
... the Sun and by 1863, it was known that these dark lines were identical to patterns of spectral lines from particular elements found on the Earth. (One set of lines failed to match the spectrum of any known element. The conclusion was that we were seeing an element on the Sun that had not been seen o ...
Stars and Light
... matched his measurements onto Ptolemy’s magnitude groups and assigned a number for the magnitude of each star. ...
... matched his measurements onto Ptolemy’s magnitude groups and assigned a number for the magnitude of each star. ...
www.aavso.org
... The most popularly accepted model for this companion object is a binary star system surrounded by a massive, opaque disk of dust ...
... The most popularly accepted model for this companion object is a binary star system surrounded by a massive, opaque disk of dust ...
1-1 H. Color Index: A color index is the difference of two color
... Here d must be expressed in parsecs. Or, since d=1/π, ...
... Here d must be expressed in parsecs. Or, since d=1/π, ...
A105 Stars and Galaxies
... Main-sequence stars like the Sun are fusing hydrogen into helium in their cores •Massive main-sequence stars are hot (blue) and luminous •Less massive stars are cooler (yellow or red) and fainter ...
... Main-sequence stars like the Sun are fusing hydrogen into helium in their cores •Massive main-sequence stars are hot (blue) and luminous •Less massive stars are cooler (yellow or red) and fainter ...
PHY2083
... measure of intrinsic brightness, which is a function of its distance and apparent magnitude. The ABSOLUTE MAGNITUDE (M) is the magnitude a star would have if it were located at a distance of 10pc ...
... measure of intrinsic brightness, which is a function of its distance and apparent magnitude. The ABSOLUTE MAGNITUDE (M) is the magnitude a star would have if it were located at a distance of 10pc ...
March
... They are roughly the size of our moon. Sometimes one or two moons can be seen in binoculars, looking like faint stars close to the planet. Io, the smallest and closest to Jupiter, has massive volcanoes. The other moons have crusts of ice, some with oceans beneath, around rocky cores. Jupiter is 680 ...
... They are roughly the size of our moon. Sometimes one or two moons can be seen in binoculars, looking like faint stars close to the planet. Io, the smallest and closest to Jupiter, has massive volcanoes. The other moons have crusts of ice, some with oceans beneath, around rocky cores. Jupiter is 680 ...
observingnebulaeclusters-1
... members that are still in the process of becoming stars! Also, those young stars often continue to radiate and reflect off of the dusty lanes that mark their birth into the cluster. Photographically, and with spectral analysis, we can see that the blue nebulousity is reflected light off of the hot y ...
... members that are still in the process of becoming stars! Also, those young stars often continue to radiate and reflect off of the dusty lanes that mark their birth into the cluster. Photographically, and with spectral analysis, we can see that the blue nebulousity is reflected light off of the hot y ...
Stellar Evolution
... Henry Russell independently graphed the luminosity vs. temperatures for thousands of stars and found a surprising relationship • The Hertzsprung-Russel (H-R) diagram shows the evolution of stars based on their characteristics of surface temperature, luminosity and mass ...
... Henry Russell independently graphed the luminosity vs. temperatures for thousands of stars and found a surprising relationship • The Hertzsprung-Russel (H-R) diagram shows the evolution of stars based on their characteristics of surface temperature, luminosity and mass ...
Oct 06, 2001
... This is a” thinking” question: Star A appears brighter than Star B, but Star A actually gives off less energy than Star B. The apparent magnitude and absolute magnitudes for Star A are m = 1 and M = -2, respectively. Use this information to answer the following two questions. 13) Which of the follow ...
... This is a” thinking” question: Star A appears brighter than Star B, but Star A actually gives off less energy than Star B. The apparent magnitude and absolute magnitudes for Star A are m = 1 and M = -2, respectively. Use this information to answer the following two questions. 13) Which of the follow ...
Powerpoint for today
... (amount of energy put out every second in form of radiation). Luminosity also called “absolute brightness”. How bright a star appears to us is the “apparent brightness”, which depends on its luminosity and distance from us: apparent brightness ...
... (amount of energy put out every second in form of radiation). Luminosity also called “absolute brightness”. How bright a star appears to us is the “apparent brightness”, which depends on its luminosity and distance from us: apparent brightness ...
The Mighty Hunter in the Winter Sky By Shannon Jackson
... Five constellations are always in our northern sky. Other groupings appear seasonally, and then disappear as they fall below the horizon. There are five constellations, however, which seem to circle Polaris (po LAR us), also known as the North Star. The North Star always stays put while the other st ...
... Five constellations are always in our northern sky. Other groupings appear seasonally, and then disappear as they fall below the horizon. There are five constellations, however, which seem to circle Polaris (po LAR us), also known as the North Star. The North Star always stays put while the other st ...
SSG Coordinators will be at the Cronan Ranch observing site at 6
... The constellation Draco (DRAY-co) the dragon is not an easy field to play in. The area around the dragon’s tail, however, does have an interesting galaxy that rewards the star-hopper. The brightest star due east of M81-82 is the very tip of the dragons tail. Known as Glausar, Lamda () Draconis is o ...
... The constellation Draco (DRAY-co) the dragon is not an easy field to play in. The area around the dragon’s tail, however, does have an interesting galaxy that rewards the star-hopper. The brightest star due east of M81-82 is the very tip of the dragons tail. Known as Glausar, Lamda () Draconis is o ...
65008_StarFinderPart2
... What unique feature can be easily found in the Big Dipper, aka Ursa Major? In what other constellation might you find a double star? ...
... What unique feature can be easily found in the Big Dipper, aka Ursa Major? In what other constellation might you find a double star? ...
Astronomy Webquest Part 1: Life of Stars: Go to http://www.odec.ca
... 6. What type of stars can become a white dwarf and eventually a black dwarf? __________________________________________ The Death of Massive Stars 7. For a massive star, it starts by burning ______________ & ______________. Helium atoms fuse to form _____________ & _____________. Carbon then fuses t ...
... 6. What type of stars can become a white dwarf and eventually a black dwarf? __________________________________________ The Death of Massive Stars 7. For a massive star, it starts by burning ______________ & ______________. Helium atoms fuse to form _____________ & _____________. Carbon then fuses t ...
Astronomy 103 Exam 2 Review
... Two observers have two clocks, one at rest on the Earth’s surface and one at rest high above the Earth’s surface. Which statement is correct? A. Each observer will see the other's clock to be running slow with respect to the observer's own clock. B. Each observer will see the other's clock ...
... Two observers have two clocks, one at rest on the Earth’s surface and one at rest high above the Earth’s surface. Which statement is correct? A. Each observer will see the other's clock to be running slow with respect to the observer's own clock. B. Each observer will see the other's clock ...