temperature - University of Texas Astronomy Home Page
... asked, what are stars made of using Cannon’s extensive catalog. ...
... asked, what are stars made of using Cannon’s extensive catalog. ...
Document
... 24. A star spends most of its life: a) As a protostar. b) In explosions lasting millions of years. c) As a red giant or supergiant. d) As a main sequence star. 25. What characteristic of a star cluster is used to determine its age? a) The number of red giants. b) The faintest stars seen in the clus ...
... 24. A star spends most of its life: a) As a protostar. b) In explosions lasting millions of years. c) As a red giant or supergiant. d) As a main sequence star. 25. What characteristic of a star cluster is used to determine its age? a) The number of red giants. b) The faintest stars seen in the clus ...
Astr604-Ch1
... 1.2.3 Masses and radii of stars The mass of a star can be measured only by its gravitational effect. Under certain conditions, the mass of star that is member of a binary system can calculate based on spectral line shifts. The radii of a number of stars have been found directly from measurement of t ...
... 1.2.3 Masses and radii of stars The mass of a star can be measured only by its gravitational effect. Under certain conditions, the mass of star that is member of a binary system can calculate based on spectral line shifts. The radii of a number of stars have been found directly from measurement of t ...
d - Haus der Astronomie
... LIGHT YEAR is NOT a unit of measurament of time. It is correct to say that the image of celestial body, which is far a certain number of light years, shows us that celestial body as it was the same number of years ago, and not at this time. ...
... LIGHT YEAR is NOT a unit of measurament of time. It is correct to say that the image of celestial body, which is far a certain number of light years, shows us that celestial body as it was the same number of years ago, and not at this time. ...
WK10revisedoneweek
... 1. Each planet moves in an ellipse, with the sun at one focus. 2. The line between the sun and the planet sweeps out equal areas in equal times. 3. The ratio of the cube of the average radius of a planets orbit to the square of its orbital period of revolution is the same for each planet. (Harmonic ...
... 1. Each planet moves in an ellipse, with the sun at one focus. 2. The line between the sun and the planet sweeps out equal areas in equal times. 3. The ratio of the cube of the average radius of a planets orbit to the square of its orbital period of revolution is the same for each planet. (Harmonic ...
celestial equator
... object and extend that line to the horizon, we obtain the azimuth angle of the object. By convention, the north point on the horizon has azimuth 0 degrees, the east point has azimuth 90 degrees, the south point has azimuth 180 degrees, and the west point has azimuth 270 degrees. The problem with the ...
... object and extend that line to the horizon, we obtain the azimuth angle of the object. By convention, the north point on the horizon has azimuth 0 degrees, the east point has azimuth 90 degrees, the south point has azimuth 180 degrees, and the west point has azimuth 270 degrees. The problem with the ...
HOMEWORK #1
... b. Observe the lightcurve of Algol (Persei - the “Demon Star”) Algol is the most famous eclipsing binary star system. The two stars orbit each other every 2 days 20 hours 49 minutes and periodically eclipse each other from the perspective of Earth. On the evenings of October 9 and 12, you can obse ...
... b. Observe the lightcurve of Algol (Persei - the “Demon Star”) Algol is the most famous eclipsing binary star system. The two stars orbit each other every 2 days 20 hours 49 minutes and periodically eclipse each other from the perspective of Earth. On the evenings of October 9 and 12, you can obse ...
HOMEWORK #1
... b. Observe the lightcurve of Algol (Persei - the “Demon Star”) Algol is the most famous eclipsing binary star system. The two stars orbit each other every 2 days 20 hours 49 minutes and periodically eclipse each other from the perspective of Earth. On the evenings of October 9 and 12, you can obse ...
... b. Observe the lightcurve of Algol (Persei - the “Demon Star”) Algol is the most famous eclipsing binary star system. The two stars orbit each other every 2 days 20 hours 49 minutes and periodically eclipse each other from the perspective of Earth. On the evenings of October 9 and 12, you can obse ...
Test 2, Nov. 17, 2015 - Physics@Brock
... 15. Star S radiates most energy at 400 nanometers and star U radiates most energy at 700 nanometers. From this we can conclude that (a) star S has hotter surface than star U. (b) star S has colder surface than star U. (c) both stars have the same surface temperature. (d) [No comparison of their surf ...
... 15. Star S radiates most energy at 400 nanometers and star U radiates most energy at 700 nanometers. From this we can conclude that (a) star S has hotter surface than star U. (b) star S has colder surface than star U. (c) both stars have the same surface temperature. (d) [No comparison of their surf ...
Stars
... light years away from the Milky way. The biggest galaxy was the IC 1101. It is 1 billion light years away. IC 1101 is six million light years in size. The galaxy sixty times larger then the milky way. When you look up at night do you wonder how many stars there are? Well there are about 2,000 stars! ...
... light years away from the Milky way. The biggest galaxy was the IC 1101. It is 1 billion light years away. IC 1101 is six million light years in size. The galaxy sixty times larger then the milky way. When you look up at night do you wonder how many stars there are? Well there are about 2,000 stars! ...
Ay123 Fall 2011 STELLAR STRUCTURE AND EVOLUTION Problem Set 1
... ξ(M)dM, with ξ(M) ∝ M −2.35 , estimate the fraction of the mass of a stellar population that has been returned returned to the interstellar medium 10 Gyr after this population was formed. 5. (5 pts) Prove that if the orbital plane of binaries are oriented randomly with respect to the plane of the sk ...
... ξ(M)dM, with ξ(M) ∝ M −2.35 , estimate the fraction of the mass of a stellar population that has been returned returned to the interstellar medium 10 Gyr after this population was formed. 5. (5 pts) Prove that if the orbital plane of binaries are oriented randomly with respect to the plane of the sk ...
powerpoint - Physics @ IUPUI
... • RR Lyrae – lower mass stars after they undergo their Helium flash (the sun will do this someday). • RR Lyrae are Horizontal Branch stars. • Metal rich and Metal poor Cepheid variables (Type I and II). • These are the higher mass stars which pass back and forth through the instability strip. ...
... • RR Lyrae – lower mass stars after they undergo their Helium flash (the sun will do this someday). • RR Lyrae are Horizontal Branch stars. • Metal rich and Metal poor Cepheid variables (Type I and II). • These are the higher mass stars which pass back and forth through the instability strip. ...
The Electromagnetic Spectrum
... Arcturus, etc. • Today, astronomers name stars using Greek letters () followed by the constellation name with a Latinized ending. • Therefore, Arcturus is also known as Alpha ( Bootis. ...
... Arcturus, etc. • Today, astronomers name stars using Greek letters () followed by the constellation name with a Latinized ending. • Therefore, Arcturus is also known as Alpha ( Bootis. ...
Astronomy Universe2
... What is a Main Sequence Star? • The H-R diagram represents a pattern that was discovered that allows stars to be compared by brightness and color. • The majority of stars are found in a band stretching diagonally across the diagram called the “Main Sequence”. • Stars start out in the Main Sequence ...
... What is a Main Sequence Star? • The H-R diagram represents a pattern that was discovered that allows stars to be compared by brightness and color. • The majority of stars are found in a band stretching diagonally across the diagram called the “Main Sequence”. • Stars start out in the Main Sequence ...
AnwerkeyTypes-of-stars-and-HR-diagram
... 2. How does surface temperature of White dwarf compares to red giants? __________________Higher______ 3. What is color of stars with highest Surface Temperature? ____________blue____________ 4. What is color of stars with lowest Surface Temperature? _______________Red_________ 5. List the colors fro ...
... 2. How does surface temperature of White dwarf compares to red giants? __________________Higher______ 3. What is color of stars with highest Surface Temperature? ____________blue____________ 4. What is color of stars with lowest Surface Temperature? _______________Red_________ 5. List the colors fro ...
Astronomy 20 Homework # 2
... Handed out on October 8, 2004 Due in class on Friday, October 15, 2004 1. What are the apparent bolometric magnitudes of: (a) a Sun-like star 50 pc away? (b) a 100 Watt lightbulb 10 km away? (c) a galaxy containing ∼ 3 × 1010 stars of an average luminosity ∼ 0.5L⊙ 20 Mpc away? (d) A quasar with lumi ...
... Handed out on October 8, 2004 Due in class on Friday, October 15, 2004 1. What are the apparent bolometric magnitudes of: (a) a Sun-like star 50 pc away? (b) a 100 Watt lightbulb 10 km away? (c) a galaxy containing ∼ 3 × 1010 stars of an average luminosity ∼ 0.5L⊙ 20 Mpc away? (d) A quasar with lumi ...
Chapter 29
... In what ways are Polaris and the Sun similar and in what ways are they different? Similar: Color and temperature Different: Size and luminosity ...
... In what ways are Polaris and the Sun similar and in what ways are they different? Similar: Color and temperature Different: Size and luminosity ...
U7 Review WS KEY
... c. because chemical elements do not have characteristic spectra d. because colors and lines in the spectrum of stars are all the same How bright a star appears as seen from Earth is called _absolute magnitude_ . Astronomers use _light years_ to measure distances from Earth to the stars. Which ...
... c. because chemical elements do not have characteristic spectra d. because colors and lines in the spectrum of stars are all the same How bright a star appears as seen from Earth is called _absolute magnitude_ . Astronomers use _light years_ to measure distances from Earth to the stars. Which ...
PH109 Exploring the Universe, Test 3, Fall 2001 Please indicate the
... 30. The bubbling of the Sun's surface is seen as a) solar wind, b) solar flares, c) granulation, d) corona 31. All stars with masses equal to or greater than the sun expand to become a) red giants, b) super novae, c) white dwarfs, d) blue giants 32. About how old do astronomers think the sun is a) 1 ...
... 30. The bubbling of the Sun's surface is seen as a) solar wind, b) solar flares, c) granulation, d) corona 31. All stars with masses equal to or greater than the sun expand to become a) red giants, b) super novae, c) white dwarfs, d) blue giants 32. About how old do astronomers think the sun is a) 1 ...
star map looking north january-march
... Can you find Cassiopeia? In Greek mythology, this W-shaped constellation represents the wife of King Cepheus who sits nearby. ...
... Can you find Cassiopeia? In Greek mythology, this W-shaped constellation represents the wife of King Cepheus who sits nearby. ...
Lesson 4, Stars
... Compare the development of a less-massive star with that of a more-massive star. A less-massive star: begins as a nebula, becomes a protostar, a main-sequence star, a red giant, and finally, a white dwarf. A more-massive star: begins as a nebula, becomes a protostar, a main-sequence star, a ve ...
... Compare the development of a less-massive star with that of a more-massive star. A less-massive star: begins as a nebula, becomes a protostar, a main-sequence star, a red giant, and finally, a white dwarf. A more-massive star: begins as a nebula, becomes a protostar, a main-sequence star, a ve ...
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.