Chapter 15: The Deaths of Massive Stars
... 5. Because of greater core temperatures and pressures, supergiants produce heavier elements, such as neon, silicon, and iron. 15-2 Type II Supernovae 1. Type II supernovae, which result from massive stars, reveal prominent hydrogen lines. They are powered by gravitational energy that is released as ...
... 5. Because of greater core temperatures and pressures, supergiants produce heavier elements, such as neon, silicon, and iron. 15-2 Type II Supernovae 1. Type II supernovae, which result from massive stars, reveal prominent hydrogen lines. They are powered by gravitational energy that is released as ...
Constellation Argo Navis
... mostly made up of ionized hydrogen, with two major star-forming regions. The Homunculus Nebula is a planetary nebula visible to the naked eye that is being ejected by the erratic luminous blue variable star Eta Carinae, the most massive visible star known. Eta Carinae is so massive that it has reach ...
... mostly made up of ionized hydrogen, with two major star-forming regions. The Homunculus Nebula is a planetary nebula visible to the naked eye that is being ejected by the erratic luminous blue variable star Eta Carinae, the most massive visible star known. Eta Carinae is so massive that it has reach ...
Final Review Sheet
... are hot, most are currently strong ultraviolet emitters. Billions of years in the future they will grow cool and invisible, but they are permanently stable. They evolve in the HR diagram along a line of nearly constant radius below the main sequence, sliding slowly from left (hi T) to right (low T, ...
... are hot, most are currently strong ultraviolet emitters. Billions of years in the future they will grow cool and invisible, but they are permanently stable. They evolve in the HR diagram along a line of nearly constant radius below the main sequence, sliding slowly from left (hi T) to right (low T, ...
Document
... 4. The cosmic distance ladder • This lecture: • Measuring distances to – things within the solar system – things within the solar neighbourhood – things within the galaxy – nearby galaxies – distant galaxies ...
... 4. The cosmic distance ladder • This lecture: • Measuring distances to – things within the solar system – things within the solar neighbourhood – things within the galaxy – nearby galaxies – distant galaxies ...
Evolution of a Star
... • Students will be able to identify and describe the evolution of a star. Suggested Grade Level Ninth Grade Subject Area(s) Science Language Arts Timeline Two 50-minute class periods Background We have a theory of how stars evolve, what makes them different from one another and what happens when the ...
... • Students will be able to identify and describe the evolution of a star. Suggested Grade Level Ninth Grade Subject Area(s) Science Language Arts Timeline Two 50-minute class periods Background We have a theory of how stars evolve, what makes them different from one another and what happens when the ...
Night Sky Checklist October–November
... and probably the most distant object visible in the murky skies of Acadiana. The Andromeda Galaxy is a spiral of well over 500 billion stars so far away that we can barely see it, at a distance of nearly 3 million light years. It looks like a faint fuzzy about halfway between the Great Square and Ca ...
... and probably the most distant object visible in the murky skies of Acadiana. The Andromeda Galaxy is a spiral of well over 500 billion stars so far away that we can barely see it, at a distance of nearly 3 million light years. It looks like a faint fuzzy about halfway between the Great Square and Ca ...
reach for the stars
... greater chance of collision, thus, blue stragglers are more likely to form. 7. What kind(s) of cluster is/are considered “young”? (1 pt) Open clusters 8. What kind(s) of cluster is/are considered “old”? (1 pt) Globular clusters 9. The age of globular clusters puts a bound on what important part of c ...
... greater chance of collision, thus, blue stragglers are more likely to form. 7. What kind(s) of cluster is/are considered “young”? (1 pt) Open clusters 8. What kind(s) of cluster is/are considered “old”? (1 pt) Globular clusters 9. The age of globular clusters puts a bound on what important part of c ...
Thermonuclear supernovae and cosmology
... Instability, to collapse in self grav. field Chandrasekhar limit: degenerate electrons can’t support mass above MCh: P~ρ5/3, R~1/M for nonrelativistic electrons. P~ρ4/3 ,R(MCh)=0 for ultrarelat. e Tolman–Oppenheimer–Volkoff limit for NS mass. ...
... Instability, to collapse in self grav. field Chandrasekhar limit: degenerate electrons can’t support mass above MCh: P~ρ5/3, R~1/M for nonrelativistic electrons. P~ρ4/3 ,R(MCh)=0 for ultrarelat. e Tolman–Oppenheimer–Volkoff limit for NS mass. ...
V Example: our SUN (G2V)
... Modified in part from http://astronomyonline.org/Stars/HighMassEvolution.asp A white dwarf is the degenerate carbon core of a low mass star (like our Sun). A neutron star is the degenerate iron core of a high mass star. A pulsar is spinning neutron star. A black hole is the remnant of the collapse o ...
... Modified in part from http://astronomyonline.org/Stars/HighMassEvolution.asp A white dwarf is the degenerate carbon core of a low mass star (like our Sun). A neutron star is the degenerate iron core of a high mass star. A pulsar is spinning neutron star. A black hole is the remnant of the collapse o ...
Type Ia supernovae as stellar endpoints and cosmological tools
... uest stars (who could have imagined they were distant stellar explosions?) have been surprising humans for at least 950 years, but probably far longer. They amazed and confounded the likes of Tycho, Kepler and Galileo, to name a few. But it was not until the separation of these events into novae and ...
... uest stars (who could have imagined they were distant stellar explosions?) have been surprising humans for at least 950 years, but probably far longer. They amazed and confounded the likes of Tycho, Kepler and Galileo, to name a few. But it was not until the separation of these events into novae and ...
Antares - Emmi
... on Earth. Apollo guardian of the cows pleaded with Hera the queen of the gods to send a scorpion with impenetrable armor to kill Orion which the scorpion succeeded . When the Greeks saw the stars and they way they all connected they saw the scorpion that killed Orion ...
... on Earth. Apollo guardian of the cows pleaded with Hera the queen of the gods to send a scorpion with impenetrable armor to kill Orion which the scorpion succeeded . When the Greeks saw the stars and they way they all connected they saw the scorpion that killed Orion ...
Word doc - UC-HiPACC - University of California, Santa Cruz
... New Mexico and one in Hawaii—caught an optical flash that within seconds brightened up to a peak of 7th magnitude (yes, bright enough to have been seen in an amateur astronomer’s telescope had it been pointed north of the triangle in the constellation Leo), and then faded over the next minute and a ...
... New Mexico and one in Hawaii—caught an optical flash that within seconds brightened up to a peak of 7th magnitude (yes, bright enough to have been seen in an amateur astronomer’s telescope had it been pointed north of the triangle in the constellation Leo), and then faded over the next minute and a ...
Linking Asteroids and Meteorites through Reflectance
... • So if you can measure the velocity that a galaxy is moving away from you • You can calculate its distance ...
... • So if you can measure the velocity that a galaxy is moving away from you • You can calculate its distance ...
Apparent magnitude
... The other side of the central area has an asymmetrical bulge: a bar the longitudinal axis of which is close to the viewing angle ...
... The other side of the central area has an asymmetrical bulge: a bar the longitudinal axis of which is close to the viewing angle ...
ppp
... scientific simulations and visualizations • Performance losses from using Java3D are relatively big compared with pure OpenGL • Development time is significantly less, due to higher level abstraction of Java3D’s API ...
... scientific simulations and visualizations • Performance losses from using Java3D are relatively big compared with pure OpenGL • Development time is significantly less, due to higher level abstraction of Java3D’s API ...
Slides from the fourth lecture
... • However, 56Fe has a minimum binding energy, when you add an 4He to it, you get a nucleus heavier than the sum of its parts, and so there is no energy release (energy is ...
... • However, 56Fe has a minimum binding energy, when you add an 4He to it, you get a nucleus heavier than the sum of its parts, and so there is no energy release (energy is ...
Reach_for_the_stars_final_questions.doc
... For each of the following images, give the following information: (Total points : 32) i. The name of the deep-space object. ii. The portion of the electromagnetic spectrum used to take the image. (gamma ray, x-ray, etc.) iii. The approximate distance from earth, in light years. iv. The constellation ...
... For each of the following images, give the following information: (Total points : 32) i. The name of the deep-space object. ii. The portion of the electromagnetic spectrum used to take the image. (gamma ray, x-ray, etc.) iii. The approximate distance from earth, in light years. iv. The constellation ...
Astronomy_Stellar_Evolution_and_Type_II_Supernovae_Exam
... was dawn. c) Telegraph lines to spark and paper to catch fire. d) Telegraph machines to continue to receive and transmit messages even when disconnected from their power supplies. e) All of the Above f) Polar Realignment. 10) According to Figure 3; As a solar mass star progresses through the stages ...
... was dawn. c) Telegraph lines to spark and paper to catch fire. d) Telegraph machines to continue to receive and transmit messages even when disconnected from their power supplies. e) All of the Above f) Polar Realignment. 10) According to Figure 3; As a solar mass star progresses through the stages ...
Lecture 12: Evolution of the Galaxy
... momentum. This results in (a) an accretion disk around equator (b) strong bipolar magnetic field and hence mass loss in bipolar outflow through poles (observed through strong millimetre wave emission in lines of CO) • Typical mass loss rate of protostar ~ 10-4 to 10-6 M⊙/yr • Protostars are often en ...
... momentum. This results in (a) an accretion disk around equator (b) strong bipolar magnetic field and hence mass loss in bipolar outflow through poles (observed through strong millimetre wave emission in lines of CO) • Typical mass loss rate of protostar ~ 10-4 to 10-6 M⊙/yr • Protostars are often en ...
Astro 3 Spring, 2004 (Prof
... To the class: I hope you find this sheet useful in your studying. It only has my notes from the review I gave to the class for chapters 21-30 (everything after the 2nd midterm, or half of your test). Many of you have asked what the best way to study is. I think that the best way to study is to go ov ...
... To the class: I hope you find this sheet useful in your studying. It only has my notes from the review I gave to the class for chapters 21-30 (everything after the 2nd midterm, or half of your test). Many of you have asked what the best way to study is. I think that the best way to study is to go ov ...
Assignment 10
... million Suns! How do astronomers think a black hole could acquire so much mass? a. the Galaxy formed from one supergiant star, and most of what is left of it is now in the black hole b. the black hole at the center is really another galaxy that our Milky Way swallowed; none of its material comes f ...
... million Suns! How do astronomers think a black hole could acquire so much mass? a. the Galaxy formed from one supergiant star, and most of what is left of it is now in the black hole b. the black hole at the center is really another galaxy that our Milky Way swallowed; none of its material comes f ...
12-1 MAIN-SEQUENCE STARS
... out into the interstellar medium by supernova explosions. Iron and elements heavier than iron are produced by fusion reactions during supernova explosions. Supernova remnants are the expanding shells of gas ejected by supernova explosions. They are filled with hot gas. The Crab Nebula is a supernova ...
... out into the interstellar medium by supernova explosions. Iron and elements heavier than iron are produced by fusion reactions during supernova explosions. Supernova remnants are the expanding shells of gas ejected by supernova explosions. They are filled with hot gas. The Crab Nebula is a supernova ...
Astron 104 Laboratory #11 The Scale of the Milky Way
... 3. We normally consider Deneb to be a bright but distant star at 1,400 ly away. Compared to the size of our galaxy, is Deneb truly distant? Explain. ...
... 3. We normally consider Deneb to be a bright but distant star at 1,400 ly away. Compared to the size of our galaxy, is Deneb truly distant? Explain. ...
Life in the galactic danger zone
... sterilise a larger number of worlds because the density of stars there is greater. However, he disagrees that high metallicity environments always allow hot jupiters to run rampant. “In contrast to Lineweaver, we used the results of radial velocity planet searches in combination with a model of plan ...
... sterilise a larger number of worlds because the density of stars there is greater. However, he disagrees that high metallicity environments always allow hot jupiters to run rampant. “In contrast to Lineweaver, we used the results of radial velocity planet searches in combination with a model of plan ...
A Compact Central Object in the Supernova Remnant Kes 79
... the remnant of the core of the star which exploded to produce Kes 79. It was not detected in previous X-ray observations because the counting rate of the central source is only ∼ 10−2 that of the entire remnant in the 1-10 keV energy band. The luminosity at 10 kpc distance, in the band 0.3-8 keV, is ...
... the remnant of the core of the star which exploded to produce Kes 79. It was not detected in previous X-ray observations because the counting rate of the central source is only ∼ 10−2 that of the entire remnant in the 1-10 keV energy band. The luminosity at 10 kpc distance, in the band 0.3-8 keV, is ...
History of supernova observation
The known history of supernova observation goes back to 185 CE, when, supernova SN 185 appeared, the oldest appearance of a supernova recorded by humankind. Several additional supernovae within the Milky Way galaxy have been recorded since that time, with SN 1604 being the most recent supernova to be observed in this galaxy.Since the development of the telescope, the field of supernova discovery has expanded to other galaxies. These occurrences provide important information on the distances of galaxies. Successful models of supernova behavior have also been developed, and the role of supernovae in the star formation process is now increasingly understood.