Chap 11 Characterizing Stars v2
... Determining stellar distances from Earth is the first step to understanding the nature of the stars. Distances to the nearer stars can be determined by stellar parallax, which is the apparent shift of a star’s location against the background stars while Earth moves along its orbit around the Sun. Th ...
... Determining stellar distances from Earth is the first step to understanding the nature of the stars. Distances to the nearer stars can be determined by stellar parallax, which is the apparent shift of a star’s location against the background stars while Earth moves along its orbit around the Sun. Th ...
Constants and Equations
... a) AM CVn stars are binary systems with an orbital period of less than 65 minutes. b) AM CVn stars may produce a type II supernova after the white dwarf reaches a critical mass. c) AM CVn stars are sources of gravitational waves. d) AM CVn stars are binary systems where a white dwarf accretes mass f ...
... a) AM CVn stars are binary systems with an orbital period of less than 65 minutes. b) AM CVn stars may produce a type II supernova after the white dwarf reaches a critical mass. c) AM CVn stars are sources of gravitational waves. d) AM CVn stars are binary systems where a white dwarf accretes mass f ...
Solutions
... Problem 1 (12 points): Five of the following celestial objects represent (or likely contain) a solar mass star at some point in its evolution. We associate the sixth object with an evolutionary stage of a much more massive star. Place a 1, 2, 3, 4, or 5 in age order (youngest to oldest) for the fiv ...
... Problem 1 (12 points): Five of the following celestial objects represent (or likely contain) a solar mass star at some point in its evolution. We associate the sixth object with an evolutionary stage of a much more massive star. Place a 1, 2, 3, 4, or 5 in age order (youngest to oldest) for the fiv ...
May 2009 Tz 2
... (d) Alnitak is a main sequence star with a luminosity similar to that of Antares. Use the value quoted in (c)(ii) to deduce that the mass of Alnitak is in the range 16 MS to 40 MS, where MS is the mass of the Sun. ...
... (d) Alnitak is a main sequence star with a luminosity similar to that of Antares. Use the value quoted in (c)(ii) to deduce that the mass of Alnitak is in the range 16 MS to 40 MS, where MS is the mass of the Sun. ...
Exploring Space
... million K, pressure is so great that nuclear fusion occurs- a star is born Heat from fusion of hydrogen is released When balance is maintained from inward pressure (gravity) and outward pressure (heat) the Main-Sequence stage is ...
... million K, pressure is so great that nuclear fusion occurs- a star is born Heat from fusion of hydrogen is released When balance is maintained from inward pressure (gravity) and outward pressure (heat) the Main-Sequence stage is ...
HNRS 227 Lecture #2 Chapters 2 and 3
... When the central temperature of a red giant reaches about 100 million K, helium fusion begins in the core This process, also called the triple alpha process, converts helium to carbon and oxygen ...
... When the central temperature of a red giant reaches about 100 million K, helium fusion begins in the core This process, also called the triple alpha process, converts helium to carbon and oxygen ...
Stars - Red, Blue, Old, New pt.4
... • Sirius B is about 1 solar mass but has a size about that of the Earth. ...
... • Sirius B is about 1 solar mass but has a size about that of the Earth. ...
Astro 1 & 100 Levine Homework Stars Name:____________________________
... 6. On the blank HR diagram, above, mark the location for each of the stars in the Star Table and label them. (6 points). 7. Draw a line to represent the main sequence. (2 points) 8. Mark the location of the Sun and label it (it’s a G-type star). (2 points) ...
... 6. On the blank HR diagram, above, mark the location for each of the stars in the Star Table and label them. (6 points). 7. Draw a line to represent the main sequence. (2 points) 8. Mark the location of the Sun and label it (it’s a G-type star). (2 points) ...
TAURUS ZODIAC CONSTELLATION In Greek mythology, Taurus
... Athena. Taurus marks the end of an area in the sky that the ancients referred to as the sea - the region from Capricorn to the region containing Aries. It was referred to as the sea due to the high concentration of constellations identified as sea creatures within it; Aries included because of being ...
... Athena. Taurus marks the end of an area in the sky that the ancients referred to as the sea - the region from Capricorn to the region containing Aries. It was referred to as the sea due to the high concentration of constellations identified as sea creatures within it; Aries included because of being ...
Friday, August 29
... • Their positions are related because – the direction of Polaris defines the rotation axis of the celestial sphere – The sun is somewhere on the sphere – From a “skewed” perspective everything on the sphere culminates on the meridian ...
... • Their positions are related because – the direction of Polaris defines the rotation axis of the celestial sphere – The sun is somewhere on the sphere – From a “skewed” perspective everything on the sphere culminates on the meridian ...
Lecture 12
... (using the inverse square law of brightness). • If you know a star's apparent magnitude and distance, you can find the star's luminosity. • The luminosity is an intrinsic property of the star, not based on how far away it is. • A star's luminosity tells you about the internal physics of the star and ...
... (using the inverse square law of brightness). • If you know a star's apparent magnitude and distance, you can find the star's luminosity. • The luminosity is an intrinsic property of the star, not based on how far away it is. • A star's luminosity tells you about the internal physics of the star and ...
Test 2 Review Topics
... Chapter 6: Atoms & Starlight 17. Differentiate between ions, isotopes, and regular atoms. 18. Describe how atoms emit and absorb light. 19. Why is the atomic spectrum of each element different? 20. How is Wien’s law (the graph) used to determine the color of a star? What is Wien’s Law? 21. What is t ...
... Chapter 6: Atoms & Starlight 17. Differentiate between ions, isotopes, and regular atoms. 18. Describe how atoms emit and absorb light. 19. Why is the atomic spectrum of each element different? 20. How is Wien’s law (the graph) used to determine the color of a star? What is Wien’s Law? 21. What is t ...
![Lectures 10 & 11 powerpoint (stellar formation) [movie below]](http://s1.studyres.com/store/data/008083226_1-fec717da713794a7feea61d4eec0ceb1-300x300.png)
Lectures 10 & 11 powerpoint (stellar formation) [movie below]
... low density) Multiple components (several clouds of ISM with different radial velocities) ...
... low density) Multiple components (several clouds of ISM with different radial velocities) ...
Stars Study Guide KEY
... 10. What is “apparent magnitude” and what does it depend on? It is how bright a star appears to our eyes as seen here on Earth. It depends on how far away the star is and how bright the star actually is (it’s absolute magnitude) 11. What is “absolute magnitude” and what does it depend on? It is how ...
... 10. What is “apparent magnitude” and what does it depend on? It is how bright a star appears to our eyes as seen here on Earth. It depends on how far away the star is and how bright the star actually is (it’s absolute magnitude) 11. What is “absolute magnitude” and what does it depend on? It is how ...
Constellations
... A. The number of months in a year B. The number of days in a month C. The number of weeks in a year D. The number of years in a decade 3. Astronomers recognize the Orion Nebula as a large celestial body. What can you infer about the Orion Nebula from its name? A. It is a star in the constellation Or ...
... A. The number of months in a year B. The number of days in a month C. The number of weeks in a year D. The number of years in a decade 3. Astronomers recognize the Orion Nebula as a large celestial body. What can you infer about the Orion Nebula from its name? A. It is a star in the constellation Or ...
Properties of Stars
... Death of Medium-Mass Stars • 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, mediummass stars are thought to cast off their bloated outer layer, creating an expanding round cloud of gas called plane ...
... Death of Medium-Mass Stars • 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, mediummass stars are thought to cast off their bloated outer layer, creating an expanding round cloud of gas called plane ...
Document
... • If you know how luminous a star REALLY is and how bright it looks from Earth, you can determine how far away it must be to look that faint. • For any star in the sky, we KNOW: ...
... • If you know how luminous a star REALLY is and how bright it looks from Earth, you can determine how far away it must be to look that faint. • For any star in the sky, we KNOW: ...
Chapter 15 part 1
... Barnard’s Star. Its parallax is 0.55'', so it lies at a distance of 1.8 pc, or 6.0 light-years. ...
... Barnard’s Star. Its parallax is 0.55'', so it lies at a distance of 1.8 pc, or 6.0 light-years. ...
Astrophysics
... star -- so if it looks dim it must be a very long way away A red star is not as bright, so if it looks bright it must be relatively close. For example: Sirius and Alpha Centauri are similar in apparent brightness but Sirius is bluish while A.Cent. is yellowish ...
... star -- so if it looks dim it must be a very long way away A red star is not as bright, so if it looks bright it must be relatively close. For example: Sirius and Alpha Centauri are similar in apparent brightness but Sirius is bluish while A.Cent. is yellowish ...
Massive Stars - University of Washington
... These stars, once made, will basically last forever Dimmer Hotter ...
... These stars, once made, will basically last forever Dimmer Hotter ...
Cygnus (constellation)
Cygnus /ˈsɪɡnəs/ is a northern constellation lying on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan. The swan is one of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross (in contrast to the Southern Cross). Cygnus was among the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations.Cygnus contains Deneb, one of the brightest stars in the night sky and one corner of the Summer Triangle, as well as some notable X-ray sources and the giant stellar association of Cygnus OB2. One of the stars of this association, NML Cygni, is one of the largest stars currently known. The constellation is also home to Cygnus X-1, a distant X-ray binary containing a supergiant and unseen massive companion that was the first object widely held to be a black hole. Many star systems in Cygnus have known planets as a result of the Kepler Mission observing one patch of the sky, the patch is the area around Cygnus. In addition, most of the eastern part of Cygnus is dominated by the Hercules–Corona Borealis Great Wall, a giant galaxy filament that is the largest known structure in the observable universe; covering most of the northern sky.