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 ...
Astronomy 20 Homework # 2
... (b) A spectrum of this galaxy is taken. The effective entrance aperture of the spectrograph is 2 × 2 arcsec2 . The surface brightness of the night sky at Palomar in the V band on a decent night is ∼ 21 mag/arcsec2 (i.e., 1 arcsec2 emits a flux equivalent to that of a V = 21 mag object). What is the ...
... (b) A spectrum of this galaxy is taken. The effective entrance aperture of the spectrograph is 2 × 2 arcsec2 . The surface brightness of the night sky at Palomar in the V band on a decent night is ∼ 21 mag/arcsec2 (i.e., 1 arcsec2 emits a flux equivalent to that of a V = 21 mag object). What is the ...
Lecture 19 - Stellar Lifecycles
... • The pressures of the surrounding layers are so high that the atoms of the iron core are crushed, smashing the electrons into the protons forming neutrons. • Once neutrons are formed the collapse stops, the surrounding gas is heated and explodes off the core. This is a supernova explosion. • The ex ...
... • The pressures of the surrounding layers are so high that the atoms of the iron core are crushed, smashing the electrons into the protons forming neutrons. • Once neutrons are formed the collapse stops, the surrounding gas is heated and explodes off the core. This is a supernova explosion. • The ex ...
Astronomy Final Study Guide – Name: **This will be the biggest test
... 25. Describe how new stars form. How might supernovas and planetary nebulae contribute to new star formation? ...
... 25. Describe how new stars form. How might supernovas and planetary nebulae contribute to new star formation? ...
Sample Exam 1
... 17. Micrometeorites are found on the surface of the Earth, what are they called prior to impact? a. meteoroids flying through space, meteors as they cross the Earth’s atmosphere b. meteors flying through space, meteoroids as they cross the Earth’s atmosphere c. asteroids d. footballs 18. The nightly ...
... 17. Micrometeorites are found on the surface of the Earth, what are they called prior to impact? a. meteoroids flying through space, meteors as they cross the Earth’s atmosphere b. meteors flying through space, meteoroids as they cross the Earth’s atmosphere c. asteroids d. footballs 18. The nightly ...
Final Exam Review
... to the same position with respect to the stars. 2. the time it takes to orbit once around Earth, back to the same lunar phase. 3. the time it takes to orbit once around the sun. 4. the time it takes to orbit once around a glass of ...
... to the same position with respect to the stars. 2. the time it takes to orbit once around Earth, back to the same lunar phase. 3. the time it takes to orbit once around the sun. 4. the time it takes to orbit once around a glass of ...
Candles in the Dark
... which get brighter then dimmer, then brighter again. Some vary irregularly but many follow regular patterns, flickering in seconds or pulsing over years to a steady beat. Why this happens can be explained by the physics going on inside the star, but the details aren’t important here. There is a type ...
... which get brighter then dimmer, then brighter again. Some vary irregularly but many follow regular patterns, flickering in seconds or pulsing over years to a steady beat. Why this happens can be explained by the physics going on inside the star, but the details aren’t important here. There is a type ...
File
... • The outer shells of the core contain all elements lighter than iron. These are now targets for the neutrons. • These elements capture neutrons until they are swollen up to isotopes like 250Fe! Then they decay into copper, gold, lead, etc. - all the remaining elements in the ...
... • The outer shells of the core contain all elements lighter than iron. These are now targets for the neutrons. • These elements capture neutrons until they are swollen up to isotopes like 250Fe! Then they decay into copper, gold, lead, etc. - all the remaining elements in the ...
Spectropolarimetric view of the lower atmosphere of
... II - Sciences et techniques, IN2P3 – Université de Montpellier II Place Eugène Bataillon - CC 72 34095 Montpellier Cédex 05, France ...
... II - Sciences et techniques, IN2P3 – Université de Montpellier II Place Eugène Bataillon - CC 72 34095 Montpellier Cédex 05, France ...
1. How old is our sun now? How does its present luminosity
... (b) They were probably present over 3 B yrs ago, but were very common 2 to 2.5 B yrs ago, where microfossils are found and also stromatolites, which are layered rocks formed from sediments trapped by growing mats of cyanobacteria. 11. The scales below indicate the sweep of time before the present in ...
... (b) They were probably present over 3 B yrs ago, but were very common 2 to 2.5 B yrs ago, where microfossils are found and also stromatolites, which are layered rocks formed from sediments trapped by growing mats of cyanobacteria. 11. The scales below indicate the sweep of time before the present in ...
After Dark M S
... and a second exploding in the Pinwheel Galaxy, M101, toward the end of August. Though both are supernovas, the natures of these two exploding stars are very different. The supernova in M51 may mark the death of a massive star. The supernova in M101 may mark the death of a white dwarf star in a binar ...
... and a second exploding in the Pinwheel Galaxy, M101, toward the end of August. Though both are supernovas, the natures of these two exploding stars are very different. The supernova in M51 may mark the death of a massive star. The supernova in M101 may mark the death of a white dwarf star in a binar ...
Astronomy 10B List of Concepts– by Chapter
... o Why dust cools molecular clouds better than other ISM o Why are these where stars form? CHAPTER 12: STAR FORMATION • Observations of star formation • Stars form in molecular clouds because … • Stars form in clusters because … • The stages of star formation • Why does a disk form? • Why do jets for ...
... o Why dust cools molecular clouds better than other ISM o Why are these where stars form? CHAPTER 12: STAR FORMATION • Observations of star formation • Stars form in molecular clouds because … • Stars form in clusters because … • The stages of star formation • Why does a disk form? • Why do jets for ...
Types of Stars http://space.about.com/od/stars/tp/What-Are
... A star is said to be born once nuclear fusion commences in its core. At this point it is, regardless of mass, considered a main sequence star. This is where the majority of a star's life is lived. Our Sun has been on the main sequence for about 5 billion years, and will persist for another 5 billion ...
... A star is said to be born once nuclear fusion commences in its core. At this point it is, regardless of mass, considered a main sequence star. This is where the majority of a star's life is lived. Our Sun has been on the main sequence for about 5 billion years, and will persist for another 5 billion ...
Chapter 5 Galaxies and Star Systems
... that spiral outward, like pinwheels. The spiral arms contain many bright, young stars as well as gas and dust. Most new stars in the spiral galaxies form in theses spiral arms. Relatively few new stars form in the central bulge. Some spiral galaxies, called barred-spiral galaxies, have a huge bar-sh ...
... that spiral outward, like pinwheels. The spiral arms contain many bright, young stars as well as gas and dust. Most new stars in the spiral galaxies form in theses spiral arms. Relatively few new stars form in the central bulge. Some spiral galaxies, called barred-spiral galaxies, have a huge bar-sh ...
Answer Key
... far. Choose the correct response from those listed, along with at least a one (1) sentence justification for your answer. Alternate justification techniques include math calculations and labeled sketches. Each question is worth 5 points: 2 for the letter response and 3 for the justification. Collabo ...
... far. Choose the correct response from those listed, along with at least a one (1) sentence justification for your answer. Alternate justification techniques include math calculations and labeled sketches. Each question is worth 5 points: 2 for the letter response and 3 for the justification. Collabo ...
August 2015 - Shasta Astronomy Club
... In the past, such star clusters would have been mistaken for foreground stars because of their brightness. But when these clusters are examined more closely, the single point of light resolves into a fuzzy cluster, and spectrum data reveal it’s much farther away. The width of one of the ultracompact ...
... In the past, such star clusters would have been mistaken for foreground stars because of their brightness. But when these clusters are examined more closely, the single point of light resolves into a fuzzy cluster, and spectrum data reveal it’s much farther away. The width of one of the ultracompact ...
Physics 2028: Great Ideas in Science II: The Changing Earth Module
... one of these eddies as shown in Figure I-4. 3. As the cloudlet contracts, it spins faster due to the conservation of angular momentum L = M R2 ω, where ω is the angular velocity of the protostellar cloudlet =⇒ since M is constant, as R gets smaller, ω gets larger. This increased spin causes the equa ...
... one of these eddies as shown in Figure I-4. 3. As the cloudlet contracts, it spins faster due to the conservation of angular momentum L = M R2 ω, where ω is the angular velocity of the protostellar cloudlet =⇒ since M is constant, as R gets smaller, ω gets larger. This increased spin causes the equa ...
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.