Stars
... Main sequence stars have zones (in radius) that are convective, and zones that are radiative, and the location of these zones depends on the behavior of the opacity, in addition to the other properties of the star. Massive stars, which are those greater than several solar masses, are convective dee ...
... Main sequence stars have zones (in radius) that are convective, and zones that are radiative, and the location of these zones depends on the behavior of the opacity, in addition to the other properties of the star. Massive stars, which are those greater than several solar masses, are convective dee ...
Stellar evolution, II
... typically much, much longer than a human lifetime, during some stages of a star's life we can measure changes in its structure. Stars that pulsate may change their pulsational periods, indicating that the star is getting cooler or hotter. ...
... typically much, much longer than a human lifetime, during some stages of a star's life we can measure changes in its structure. Stars that pulsate may change their pulsational periods, indicating that the star is getting cooler or hotter. ...
The Pistol Star - Emmi
... The arrow had poison on it. Chiron was suffering. He was an immortal (unable to die) so he could no be relieved with death. Chiron offered himself as a replacement for Prometheus. Prometheus was punished for giving fire to man. His punishment was being chained to a rock. Each day an eagle would come ...
... The arrow had poison on it. Chiron was suffering. He was an immortal (unable to die) so he could no be relieved with death. Chiron offered himself as a replacement for Prometheus. Prometheus was punished for giving fire to man. His punishment was being chained to a rock. Each day an eagle would come ...
LEO - nina`s Senior project
... star in Leo. Its traditional name, Algieba or Al Gieba, comes from the Arabic Al-Jabhah, which means “the forehead.” The star is sometimes also known by its Latin name, Juba.Algieba is composed of a giant star with the spectral classification K1-IIIbCN0.5 and a dimmer companion star which belongs to ...
... star in Leo. Its traditional name, Algieba or Al Gieba, comes from the Arabic Al-Jabhah, which means “the forehead.” The star is sometimes also known by its Latin name, Juba.Algieba is composed of a giant star with the spectral classification K1-IIIbCN0.5 and a dimmer companion star which belongs to ...
1” “Sky-Notes” of the Open University Astronomy Club. June 2005. A
... the Moon too bright use a filter to reduce the glare. At times features along different parts of the limb are better presented due the effect of libration – an apparent wobbling of the Moon about its axis – that allows us to see about 59% of its surface. The BAA Handbook and some monthly magazines ( ...
... the Moon too bright use a filter to reduce the glare. At times features along different parts of the limb are better presented due the effect of libration – an apparent wobbling of the Moon about its axis – that allows us to see about 59% of its surface. The BAA Handbook and some monthly magazines ( ...
Page 1 of 4 KEY PSCI 1055 Test #4 (Form A) KEY Spring 2008
... a. Our Sun is considered to be a class G star. What is the expected temperature range of the Sun? Class G stars are about 5000 K – 6000 K b. What type of star has the lowest temperature but the highest level of brightness on the H-R diagram? giants/supergiants c. A particular star has an absolute ma ...
... a. Our Sun is considered to be a class G star. What is the expected temperature range of the Sun? Class G stars are about 5000 K – 6000 K b. What type of star has the lowest temperature but the highest level of brightness on the H-R diagram? giants/supergiants c. A particular star has an absolute ma ...
MULTIPLE CHOICE QUESTIONS (50 pts
... 14. During the first three weeks in April we were noticing two planets very close together in the western sky about 40 minutes after sunset. Name them. A. Venus and Mars B. Venus and Mercury C. Venus and Saturn D. Mars and Saturn E. Saturn and Jupiter 15. The oldest regions on the Martian surface ...
... 14. During the first three weeks in April we were noticing two planets very close together in the western sky about 40 minutes after sunset. Name them. A. Venus and Mars B. Venus and Mercury C. Venus and Saturn D. Mars and Saturn E. Saturn and Jupiter 15. The oldest regions on the Martian surface ...
Unit 3 - Section 8.9 Life of Stars
... Seeing Light -The human eye can detect light in the form of radiation (energy). Other forms of electromagnetic radiation are radio waves and x-rays. Waves with different wavelengths make up the electrostatic spectrum. Other devices have been invented that will detect wavelengths different than those ...
... Seeing Light -The human eye can detect light in the form of radiation (energy). Other forms of electromagnetic radiation are radio waves and x-rays. Waves with different wavelengths make up the electrostatic spectrum. Other devices have been invented that will detect wavelengths different than those ...
H-R Diagram - Faculty Website Listing
... Please read the section in textbook that talks about HR diagram. We have also discussed this in class with examples. It may be useful to have your class notes with you when you do the lab. You can also look them up on the class webpage. 1. Using Stellarium software to collect the information on abso ...
... Please read the section in textbook that talks about HR diagram. We have also discussed this in class with examples. It may be useful to have your class notes with you when you do the lab. You can also look them up on the class webpage. 1. Using Stellarium software to collect the information on abso ...
L = σAT 4
... order OBAFGKM. This is the same as a scale of decreasing temperature. Once again the scale is not a ...
... order OBAFGKM. This is the same as a scale of decreasing temperature. Once again the scale is not a ...
N (North) Equator Latitude and Declination
... First, some definitions. The observer’s zenith is the point directly over the observer’s head. The observer’s meridian is an imaginary arc in the sky which runs north-south (so passes over the poles) and through the observer’s zenith. The meridian lies directly over the observer’s great circle of lo ...
... First, some definitions. The observer’s zenith is the point directly over the observer’s head. The observer’s meridian is an imaginary arc in the sky which runs north-south (so passes over the poles) and through the observer’s zenith. The meridian lies directly over the observer’s great circle of lo ...
w 2012-01-13 Stellar Life Cycle
... Emission nebulae are clouds of high temperature gas. The atoms in the cloud are energized by ultraviolet light from a nearby star and emit radiation as they fall back into lower energy states (in much the same way as a neon light). These nebulae are usually red because the predominant emission line ...
... Emission nebulae are clouds of high temperature gas. The atoms in the cloud are energized by ultraviolet light from a nearby star and emit radiation as they fall back into lower energy states (in much the same way as a neon light). These nebulae are usually red because the predominant emission line ...
Orion
... Why does Mintaka appear so dim given that it is very luminous? Which stars are main sequence stars? Rigel is a true supergiant, blazing white-hot star of intense brilliance and dazzling beauty. Its surface temperature is about 12,000 K and its energy output exceeds that of our Sun by a factor of ma ...
... Why does Mintaka appear so dim given that it is very luminous? Which stars are main sequence stars? Rigel is a true supergiant, blazing white-hot star of intense brilliance and dazzling beauty. Its surface temperature is about 12,000 K and its energy output exceeds that of our Sun by a factor of ma ...
A Decade in the Life of the Massive Black-Hole Binary... Silas Laycock !
... has been able to monitor individual X-ray binaries in the starburst galaxy IC 10. The Wolf Rayet + BH binary known as IC10 X-1 is regarded as one of the most massive stellar black holes; a class of objects representing the pinnacle of the stellar mass function. BH binaries occupy key roles in seedin ...
... has been able to monitor individual X-ray binaries in the starburst galaxy IC 10. The Wolf Rayet + BH binary known as IC10 X-1 is regarded as one of the most massive stellar black holes; a class of objects representing the pinnacle of the stellar mass function. BH binaries occupy key roles in seedin ...
Sample Midterm - IUPUI Physics
... • D) neither one will work for anything outside our galaxy 9) Quasars are typically found? • A) on the other side of the observable universe (< 4 billion light years) • B) in the cores of the nearest galaxies to us (less than 100 million light years) • C) in the cores of nearby galaxy clusters (200 ...
... • D) neither one will work for anything outside our galaxy 9) Quasars are typically found? • A) on the other side of the observable universe (< 4 billion light years) • B) in the cores of the nearest galaxies to us (less than 100 million light years) • C) in the cores of nearby galaxy clusters (200 ...
Life Cycle of Stars
... – Star begins to shrink; outer core of hydrogen begins to fuse • Star gets bigger ...
... – Star begins to shrink; outer core of hydrogen begins to fuse • Star gets bigger ...
Ch.10 Stellar old age
... • H fusion is faster because C, N and O act as catalysts • Same net result: 4 H become 1 He. • No total gain or loss of C, N, O Question: How does energy produced by CNO cycle compare to PP chain? ...
... • H fusion is faster because C, N and O act as catalysts • Same net result: 4 H become 1 He. • No total gain or loss of C, N, O Question: How does energy produced by CNO cycle compare to PP chain? ...
Life Cycle of a Star
... takes to support the stars mass. For bigger stars, nuclear fusion must occur at a very fast rate in order to balance the star’s gravity. Because of this, larger stars go through the stages much faster than smaller stars. Nuclear fusion is slower with smaller stars because they have less mass and, th ...
... takes to support the stars mass. For bigger stars, nuclear fusion must occur at a very fast rate in order to balance the star’s gravity. Because of this, larger stars go through the stages much faster than smaller stars. Nuclear fusion is slower with smaller stars because they have less mass and, th ...
Star of Bethlehem
In Christian tradition, the Star of Bethlehem, also called the Christmas Star, revealed the birth of Jesus to the Biblical Magi, and later led them to Bethlehem. The star appears only in the nativity story of the Gospel of Matthew, where astrologers from the east are inspired by the star to travel to Jerusalem. There they meet King Herod of Judea, and ask where the king of the Jews had been born. Herod, following a verse from the Book of Micah interpreted as a prophecy, directs them to Bethlehem, to the south of Jerusalem. The star leads them to Jesus' home in the town, where they worship him and give him gifts. The wise men are then given a divine warning not to return to Herod so they return home by a different route.Many Christians see the star as a miraculous sign to mark the birth of the Christ (or messiah). Some theologians claimed that the star fulfilled a prophecy, known as the Star Prophecy. Astronomers have made several attempts to link the star to unusual astronomical events, such as a conjunction of Jupiter and Saturn, a comet or a supernova.Many modern scholars do not consider the story to be describing a historical event but a pious fiction created by the author of the Gospel of Matthew.The subject is a favorite at planetarium shows during the Christmas season, although the Biblical account describes Jesus with a broader Greek word, which can mean either ""infant"" or ""child"" (paidon), rather than the more specific word for infant (brephos), possibly implying that some time has passed since the birth. The visit is traditionally celebrated on Epiphany (January 6) in Western Christianity.