The Life Cycle of a Star
... The core is now very dense and very hot. (A tablespoon full would weigh 5 tons!) A white dwarf is about 8,000 miles in diameter. After 35,000 years, the core begins to cool. ...
... The core is now very dense and very hot. (A tablespoon full would weigh 5 tons!) A white dwarf is about 8,000 miles in diameter. After 35,000 years, the core begins to cool. ...
PowerPoint
... We now have one equation that relates the unknown m and R. To get another equation, we’ll use the idea of finding the balance point (center of mass) for a teeter-totter. Archimedes discovered that the balance point (center of mass) for a board with masses m1 and m2 at each end satisfies m1r1=m2r2 (L ...
... We now have one equation that relates the unknown m and R. To get another equation, we’ll use the idea of finding the balance point (center of mass) for a teeter-totter. Archimedes discovered that the balance point (center of mass) for a board with masses m1 and m2 at each end satisfies m1r1=m2r2 (L ...
Lab 2: The Planisphere
... RA-Dec coordinates are only good for storing the location of stars in reference books. This coordinate system, called the equatorial system, tells us nothing about how to actually find something in the sky when we go outside. The altitude-azimuth coordinate system, called the horizon system, fulfill ...
... RA-Dec coordinates are only good for storing the location of stars in reference books. This coordinate system, called the equatorial system, tells us nothing about how to actually find something in the sky when we go outside. The altitude-azimuth coordinate system, called the horizon system, fulfill ...
Universe and Star Formation - White Plains Public Schools
... • Stars with masses similar to the sun evolve in essentially the same way as low-mass stars. • During their collapse from red giants to white dwarfs, medium-mass stars are thought to cast off their bloated outer layer, creating an expanding round cloud of gas called planetary nebula. ...
... • Stars with masses similar to the sun evolve in essentially the same way as low-mass stars. • During their collapse from red giants to white dwarfs, medium-mass stars are thought to cast off their bloated outer layer, creating an expanding round cloud of gas called planetary nebula. ...
General Introduction 1. Luminosity, Flux and Magnitude The
... Nucleosynthesis is the natural by-product of stellar evolution. The most bound nucleus is Fe, and slowly nuclear reactions in stars strive toward nuclei with the greatest binding. For the most part, however, the heavy elements produced in stars are trapped within unless the star can be disrupted. Lo ...
... Nucleosynthesis is the natural by-product of stellar evolution. The most bound nucleus is Fe, and slowly nuclear reactions in stars strive toward nuclei with the greatest binding. For the most part, however, the heavy elements produced in stars are trapped within unless the star can be disrupted. Lo ...
Astronomy 114 – Summary of Important Concepts #2 1 Stars: key
... Q: A star has an absolute magnitude of 4 and lies 1 parsec from the Earth. Suppose that star is moved to a distance of 10 parsecs from the Sun. What is its absolute magnitude? A: The absolute magnitude is still 4. Absolute magnitude does not depend on distance. It measures the luminosity of the star ...
... Q: A star has an absolute magnitude of 4 and lies 1 parsec from the Earth. Suppose that star is moved to a distance of 10 parsecs from the Sun. What is its absolute magnitude? A: The absolute magnitude is still 4. Absolute magnitude does not depend on distance. It measures the luminosity of the star ...
Laboratory Procedure (Word Format)
... Deneb (in Cygnus) and Altair (in Aquila). These three constellations make good reference points for the rest of the fall sky. Note in the eastern sky a large area defined roughly by four stars in a great square. This is the body of the constellation of Pegasus, which is connected to Andromeda. Make ...
... Deneb (in Cygnus) and Altair (in Aquila). These three constellations make good reference points for the rest of the fall sky. Note in the eastern sky a large area defined roughly by four stars in a great square. This is the body of the constellation of Pegasus, which is connected to Andromeda. Make ...
February 16
... The key to determining the luminosity of a blackbody is knowing its temperature and surface area. The sizes of stars can vary from 0.01 R to 1000 R, where R is the radius of the Sun. ...
... The key to determining the luminosity of a blackbody is knowing its temperature and surface area. The sizes of stars can vary from 0.01 R to 1000 R, where R is the radius of the Sun. ...
Astrophysics by Daniel Yang
... Absorption spectra are produced by cool non-luminous gases placed in front of a source of continuous spectra. The gas absorbs certain frequencies and re-emits them in all directions, leaving the spectrum deficient in those wavelengths. The frequencies absorbed are identical to the frequencies it wou ...
... Absorption spectra are produced by cool non-luminous gases placed in front of a source of continuous spectra. The gas absorbs certain frequencies and re-emits them in all directions, leaving the spectrum deficient in those wavelengths. The frequencies absorbed are identical to the frequencies it wou ...
ASTR 200 : Lecture 15 Ensemble Properties of Stars
... • HW4 will not be due until FRIDAY Oct 21, 4 PM • TA office hours Wed+Thurs as normal; Prof Gladman's Thursday office hour will be moved to Friday Oct 21, 1:30-2:30 ...
... • HW4 will not be due until FRIDAY Oct 21, 4 PM • TA office hours Wed+Thurs as normal; Prof Gladman's Thursday office hour will be moved to Friday Oct 21, 1:30-2:30 ...
Study Island
... climate. He waters them more often, but they do not improve. Which of the following scientific questions should he ask next to find out what is wrong with his roses? A. Which rose bush has larger, more colorful blooms? B. Does temperature affect the growth of the rose bushes? C. How much do rose bus ...
... climate. He waters them more often, but they do not improve. Which of the following scientific questions should he ask next to find out what is wrong with his roses? A. Which rose bush has larger, more colorful blooms? B. Does temperature affect the growth of the rose bushes? C. How much do rose bus ...
Earth
... hydrogen (about 70%) and helium (about 28%). Carbon, nitrogen and oxygen make up 1.5% and the other 0.5% is made up of small amounts of many other elements such as neon, iron, silicon, magnesium and sulfur. The sun shines because it is burning hydrogen into helium in its extremely hot core. This mea ...
... hydrogen (about 70%) and helium (about 28%). Carbon, nitrogen and oxygen make up 1.5% and the other 0.5% is made up of small amounts of many other elements such as neon, iron, silicon, magnesium and sulfur. The sun shines because it is burning hydrogen into helium in its extremely hot core. This mea ...
The Changing Heavens Over Time Key Commands Constellations
... 5. Find the year when Polaris is furthest from the pole to the closest thousand years. [Hint: The DE will be between 40o and 50o.] This will be many thousands of years in the future, so move ahead in 2000 year increments until you get close. __________________ 6. Find the year when Polaris is back a ...
... 5. Find the year when Polaris is furthest from the pole to the closest thousand years. [Hint: The DE will be between 40o and 50o.] This will be many thousands of years in the future, so move ahead in 2000 year increments until you get close. __________________ 6. Find the year when Polaris is back a ...
The Changing Heavens Over Time Key Commands Constellations
... 5. Find the year when Polaris is furthest from the pole to the closest thousand years. [Hint: The DE will be between 40o and 50o.] This will be many thousands of years in the future, so move ahead in 2000 year increments until you get close. __________________ 6. Find the year when Polaris is back a ...
... 5. Find the year when Polaris is furthest from the pole to the closest thousand years. [Hint: The DE will be between 40o and 50o.] This will be many thousands of years in the future, so move ahead in 2000 year increments until you get close. __________________ 6. Find the year when Polaris is back a ...
kolynos - Look and Learn
... I t has long been known that this star, the District Council should be transwhich is usually known to astronomers ferred to architects. Beauty would as Alpha in Ursa Minor, is composed of thus find its official place. The cost of two suns, both being easily perceptible the public architect could be ...
... I t has long been known that this star, the District Council should be transwhich is usually known to astronomers ferred to architects. Beauty would as Alpha in Ursa Minor, is composed of thus find its official place. The cost of two suns, both being easily perceptible the public architect could be ...
Study Guide for 3RD Astronomy Exam
... and lifetime of an O main sequence star, the Sun and an M main sequence star. State the impact of convection in the envelope of very low mass stars on the stars main sequence lifetime. Describe or identify changes in a star during its main sequence lifetime. Unit 63: Giant Stars Describe how shell f ...
... and lifetime of an O main sequence star, the Sun and an M main sequence star. State the impact of convection in the envelope of very low mass stars on the stars main sequence lifetime. Describe or identify changes in a star during its main sequence lifetime. Unit 63: Giant Stars Describe how shell f ...
Phobos
... A few degrees from alpha Pegasi (Markab) this "red" looking star changes from about mag. 7 to 8. The star is in a class of evolved giant stars with no charted periodicity in its light variations. Algol (beta Persei): Ane of the most famous stars stars in the sky with an intriguing name. The name has ...
... A few degrees from alpha Pegasi (Markab) this "red" looking star changes from about mag. 7 to 8. The star is in a class of evolved giant stars with no charted periodicity in its light variations. Algol (beta Persei): Ane of the most famous stars stars in the sky with an intriguing name. The name has ...
Starry Lives, Starry Skies
... the Web or some astronomy books to find examples for themselves. 4. Have them make a star map of the location of one object for each stage, using the Your Sky Tonight star chart. Most sky objects are not visible all year long; students should determine from the chart whether or not the object t ...
... the Web or some astronomy books to find examples for themselves. 4. Have them make a star map of the location of one object for each stage, using the Your Sky Tonight star chart. Most sky objects are not visible all year long; students should determine from the chart whether or not the object t ...
Lives of stars HR
... mass of stars based on their position in the HR diagram Evolution of stars occurs as stars run out of fuel and this can be traced on the HR diagram HR diagrams of star clusters help us determine the age of the clusters. ...
... mass of stars based on their position in the HR diagram Evolution of stars occurs as stars run out of fuel and this can be traced on the HR diagram HR diagrams of star clusters help us determine the age of the clusters. ...
Chapter 12: Measuring the Properties of Stars
... 8. It took until the late 1950s to determine the correct relationship between Cepheids’ periods and absolute magnitudes accurately because there are actually two different types of Cepheid variables. Cepheid I stars are brighter than Cepheid II stars (for the same period) by about a factor of 4 (or ...
... 8. It took until the late 1950s to determine the correct relationship between Cepheids’ periods and absolute magnitudes accurately because there are actually two different types of Cepheid variables. Cepheid I stars are brighter than Cepheid II stars (for the same period) by about a factor of 4 (or ...
Boötes
Boötes /boʊˈoʊtiːz/ is a constellation in the northern sky, located between 0° and +60° declination, and 13 and 16 hours of right ascension on the celestial sphere. The name comes from the Greek Βοώτης, Boōtēs, meaning herdsman or plowman (literally, ox-driver; from βοῦς bous “cow”). The ""ö"" in the name is a diaeresis, not an umlaut, meaning that each 'o' is to be pronounced separately.One of the 48 constellations described by the 2nd century astronomer Ptolemy, Boötes is now one of the 88 modern constellations. It contains the fourth brightest star in the night sky, the orange-hued Arcturus. Boötes is home to many other bright stars, including eight above the fourth magnitude and an additional 21 above the fifth magnitude, making a total of 29 stars easily visible to the naked eye.