Star Formation
... helium. • Interstellar dust, like clouds in the gas giants, are molecular carbon monoxide, ammonia, and water. • Traces of all other elements are present. ...
... helium. • Interstellar dust, like clouds in the gas giants, are molecular carbon monoxide, ammonia, and water. • Traces of all other elements are present. ...
PowerPoint Presentation - ASTR498E High energy
... The mass of the star M The fraction of the stellar mass that can participate in the fusion reactions f ...
... The mass of the star M The fraction of the stellar mass that can participate in the fusion reactions f ...
Review Packet
... _____ Hydrogen atoms are fused together generating an enormous amount of energy igniting the star causing it to shine. ...
... _____ Hydrogen atoms are fused together generating an enormous amount of energy igniting the star causing it to shine. ...
An Introduction to Astronomy and Cosmology
... Eve or the 30th June. Since the time definition was changed, 22 leap seconds have had to be added, about one every 18 months, but there were none between 1998 and 2005 showing the slowdown is not particularly regular. Leap seconds are somewhat of a nuisance for systems such as the Global Positioning ...
... Eve or the 30th June. Since the time definition was changed, 22 leap seconds have had to be added, about one every 18 months, but there were none between 1998 and 2005 showing the slowdown is not particularly regular. Leap seconds are somewhat of a nuisance for systems such as the Global Positioning ...
Bright stars and faint stars: the stellar magnitude system Magnitudes
... Absolute Magnitude: a measure of the intrinsic brilliance of a star • Pick a star (any star) • Imagine moving it to a distance of 10 parsecs • The apparent magnitude it would have is its absolute magnitude • The absolute magnitude is a distanceindependent quantity • Look at Appendix 12 and Appendix ...
... Absolute Magnitude: a measure of the intrinsic brilliance of a star • Pick a star (any star) • Imagine moving it to a distance of 10 parsecs • The apparent magnitude it would have is its absolute magnitude • The absolute magnitude is a distanceindependent quantity • Look at Appendix 12 and Appendix ...
THE MILKY WAY GALAXY
... The nature and size of the Galaxy, as well as our location within this stellar system were finally appreciated in the early 20th century when: The locations of the globular clusters were mapped out, indicating that the galactic center was located thousands of light years distant, towards the const ...
... The nature and size of the Galaxy, as well as our location within this stellar system were finally appreciated in the early 20th century when: The locations of the globular clusters were mapped out, indicating that the galactic center was located thousands of light years distant, towards the const ...
File
... • 2. Greek letter (Alpha, Beta, Gamma, Delta, Epsilon, . . .) • Labeled in an approximate order of decreasing brightness for stars in the constellation. ...
... • 2. Greek letter (Alpha, Beta, Gamma, Delta, Epsilon, . . .) • Labeled in an approximate order of decreasing brightness for stars in the constellation. ...
Why Is the Sun a Star
... atoms and radiating some energy, but not in the fantastic amounts like true stars. These stars are known as brown dwarfs since they emit some light but are not as bright as the smallest true stars. They are dimly glowing like a cooling campfire ember. When you look out into the night sky across vast ...
... atoms and radiating some energy, but not in the fantastic amounts like true stars. These stars are known as brown dwarfs since they emit some light but are not as bright as the smallest true stars. They are dimly glowing like a cooling campfire ember. When you look out into the night sky across vast ...
Study Guide: Chapters 32-‐34 FROSH CHAPTER 32 1. What is
... 9. Is the back side of the Moon is always dark? Explain. ...
... 9. Is the back side of the Moon is always dark? Explain. ...
Powerpoint Presentation (large file)
... are glowing, ionized clouds of gas • Emission nebulae are powered by ultraviolet light that they absorb from nearby hot stars • Reflection nebulae are produced when starlight is reflected from dust grains in the interstellar medium, producing a characteristic bluish ...
... are glowing, ionized clouds of gas • Emission nebulae are powered by ultraviolet light that they absorb from nearby hot stars • Reflection nebulae are produced when starlight is reflected from dust grains in the interstellar medium, producing a characteristic bluish ...
Homework Problem #1: (pdf file)
... brightness at Mauna Kea is listed at the CFHT WWW site as 20.9 mag/arcsec2 . The LRIS pixel scale is 0.22 arcseconds/pixel, the readout noise is 8e- and the inverse gain of the system is 2.0 e-/DN. (a) What is the rate of detected e-/pixel from the sky in the R band? (b) What is the rate of detected ...
... brightness at Mauna Kea is listed at the CFHT WWW site as 20.9 mag/arcsec2 . The LRIS pixel scale is 0.22 arcseconds/pixel, the readout noise is 8e- and the inverse gain of the system is 2.0 e-/DN. (a) What is the rate of detected e-/pixel from the sky in the R band? (b) What is the rate of detected ...
Stellar Evolution Lab
... Stage 2- The gas and dust spiral together and contract under their own gravity. The gas and dust will begin to heat up and start to glow forming Protostars. Stage 3- If a protostar contains enough matter, the central temperature will reach 15 million degrees Celsius and nuclear reactions in which hy ...
... Stage 2- The gas and dust spiral together and contract under their own gravity. The gas and dust will begin to heat up and start to glow forming Protostars. Stage 3- If a protostar contains enough matter, the central temperature will reach 15 million degrees Celsius and nuclear reactions in which hy ...
18.1 NOTES How are stars formed? Objective: Describe how stars
... A star is a big ball of gases that gives off heat and light. The Sun is only one of billions of stars that make up are galaxy, and there are billions of galaxies. Most stars appear to be white in color. However, there are blue, white, yellow, orange, and red stars. The color of a star determines how ...
... A star is a big ball of gases that gives off heat and light. The Sun is only one of billions of stars that make up are galaxy, and there are billions of galaxies. Most stars appear to be white in color. However, there are blue, white, yellow, orange, and red stars. The color of a star determines how ...
Star Formation/Llfe Cycle Notes
... d. Center of protostar gets dense enough and therefore hot enough (3000K+) to become luminous, however not visible due to exterior of gas and dust surrounding it. 3) Phophids- YSO’s starting to disk a. start to get charged particles 4) Early star- Does a stutter step with nuclear fusion which blows ...
... d. Center of protostar gets dense enough and therefore hot enough (3000K+) to become luminous, however not visible due to exterior of gas and dust surrounding it. 3) Phophids- YSO’s starting to disk a. start to get charged particles 4) Early star- Does a stutter step with nuclear fusion which blows ...
Star project
... • They are extremely burning hot. • The nearest star to us is the sun. • They are made up of mainly hydrogen and helium, but have a little bit of other elements like oxygen and carbon as well. ...
... • They are extremely burning hot. • The nearest star to us is the sun. • They are made up of mainly hydrogen and helium, but have a little bit of other elements like oxygen and carbon as well. ...
Star formation jeopardy
... An interstellar cloud is disturbed and begins to gravitationally collapse, fragments,It heats up and spins faster. When the core temperature reaches 10 ...
... An interstellar cloud is disturbed and begins to gravitationally collapse, fragments,It heats up and spins faster. When the core temperature reaches 10 ...
a star is born reading
... star in the galaxy. However, they are not easily seen. They burn their fuel very slowly and are not as bright as others in the sky. They are like flashlights in a dark auditorium. When a big spotlight comes on, the flashlights can't be seen. But because they burn more slowly, red dwarfs will live a ...
... star in the galaxy. However, they are not easily seen. They burn their fuel very slowly and are not as bright as others in the sky. They are like flashlights in a dark auditorium. When a big spotlight comes on, the flashlights can't be seen. But because they burn more slowly, red dwarfs will live a ...
Nebula – • The most abundant element in the universe is hydrogen
... Eventually, the temperature inside a protostar becomes hot enough (about 10,000,000°C) for nuclear fusion reactions to begin converting hydrogen into helium. ...
... Eventually, the temperature inside a protostar becomes hot enough (about 10,000,000°C) for nuclear fusion reactions to begin converting hydrogen into helium. ...
and Concept Self-test (1,2,3,5,6,7,8,9)
... Blackbody curve is so constant, Astronomers only need to measure apparent brightness using at few as two frequency measurements. Table at right “V” is measured using “visible” light range (490-590 nm) and “B” blue line sees only “blue” light from 380-480 nm. Star “A”is Rigel, where it is very hot, ...
... Blackbody curve is so constant, Astronomers only need to measure apparent brightness using at few as two frequency measurements. Table at right “V” is measured using “visible” light range (490-590 nm) and “B” blue line sees only “blue” light from 380-480 nm. Star “A”is Rigel, where it is very hot, ...
Document
... determining the distance of stars. The change in position of an object with respect to a distant background is called parallax. As Earth moves in its orbit, astronomers are able to observe stars from two different positions. Astronomers measure the parallax of nearby stars to determine their distanc ...
... determining the distance of stars. The change in position of an object with respect to a distant background is called parallax. As Earth moves in its orbit, astronomers are able to observe stars from two different positions. Astronomers measure the parallax of nearby stars to determine their distanc ...
Perseus (constellation)
Perseus, named after the Greek mythological hero Perseus, is a constellation in the northern sky. It was one of 48 listed by the 2nd-century astronomer Ptolemy and among the 88 modern constellations defined by the International Astronomical Union (IAU). It is located in the northern celestial hemisphere near several other constellations named after legends surrounding Perseus, including Andromeda to the west and Cassiopeia to the north. Perseus is also bordered by Aries and Taurus to the south, Auriga to the east, Camelopardalis to the north, and Triangulum to the west.The galactic plane of the Milky Way passes through Perseus but is mostly obscured by molecular clouds. The constellation's brightest star is the yellow-white supergiant Alpha Persei (also called Mirfak), which shines at magnitude 1.79. It and many of the surrounding stars are members of an open cluster known as the Alpha Persei Cluster. The best-known star, however, is Algol (Beta Persei), linked with ominous legends because of its variability, which is noticeable to the naked eye. Rather than being an intrinsically variable star, it is an eclipsing binary. Other notable star systems in Perseus include X Persei, a binary system containing a neutron star, and GK Persei, a nova that peaked at magnitude 0.2 in 1901. The Double Cluster, comprising two open clusters quite near each other in the sky, was known to the ancient Chinese. The constellation gives its name to the Perseus Cluster (Abell 426), a massive galaxy cluster located 250 million light-years from Earth. It hosts the radiant of the annual Perseids meteor shower—one of the most prominent meteor showers in the sky.