stars concept review
... b. a large cloud of gas and dust in space where stars are born c. a shrinking, spinning region in space with a central concentration of matter d. a large explosion on a star that makes it brighter e. an object so dense that even light cannot escape its gravity ...
... b. a large cloud of gas and dust in space where stars are born c. a shrinking, spinning region in space with a central concentration of matter d. a large explosion on a star that makes it brighter e. an object so dense that even light cannot escape its gravity ...
Star
... -Since different elements absorb different wavelengths of light, elements can be determined. -Stars are made up of gas elements. (Hydrogen is the most common!) ...
... -Since different elements absorb different wavelengths of light, elements can be determined. -Stars are made up of gas elements. (Hydrogen is the most common!) ...
STARS- hot glowing sphere of gas that produces energy by
... STAR- hot glowing sphere of gas that produces energy by fusion 1] Light year—distance light travels in a year (9.5 trillion km, 6 trillion miles) 2] Star brightness A) Actual brightness- brightness right next to a star B) Apparent brightness—brightness as seen from earth 3] Formation of stars A) Neb ...
... STAR- hot glowing sphere of gas that produces energy by fusion 1] Light year—distance light travels in a year (9.5 trillion km, 6 trillion miles) 2] Star brightness A) Actual brightness- brightness right next to a star B) Apparent brightness—brightness as seen from earth 3] Formation of stars A) Neb ...
1_Introduction - Department of Astronomy
... Ordinary particles, no longer supported by pressure, flow where gravity takes them… ...
... Ordinary particles, no longer supported by pressure, flow where gravity takes them… ...
SS_L4
... Initial contraction of a massive cloud proceeds providing it is not opposed by increasing P. Releasing Egrav increases T (and hence P), but puts H2 molecules into excited rotational levels. De-excitation emits a photon at 28.2m. Cloud is transparent at 28.2m, so radiation cools cloud, allowing con ...
... Initial contraction of a massive cloud proceeds providing it is not opposed by increasing P. Releasing Egrav increases T (and hence P), but puts H2 molecules into excited rotational levels. De-excitation emits a photon at 28.2m. Cloud is transparent at 28.2m, so radiation cools cloud, allowing con ...
Chapter 21 power point - Laconia School District
... Main sequence • An area on the H-R diagram that runs from the upper left to the lower right and includes more than 90% of all stars. ...
... Main sequence • An area on the H-R diagram that runs from the upper left to the lower right and includes more than 90% of all stars. ...
MULTIPLE CHOICE. Choose the one alternative that best
... C) The first generation stars formed such a long time ago that the light from them has not yet had time to reach us. D) The first generation stars were all very massive and exploded as supernova. E) We do not know how the first generation stars were formed. ...
... C) The first generation stars formed such a long time ago that the light from them has not yet had time to reach us. D) The first generation stars were all very massive and exploded as supernova. E) We do not know how the first generation stars were formed. ...
PHYSICS 015
... For the most massive stars, the Schwarzschild radius is already too big. For example, if you wanted to allow a 10-solar-mass star to settle down as a neutron star, about 10 km in diameter, it already inside its Schwarzschild radius and is doomed to collapse! Stars can’t ‘know’ that they should shed ...
... For the most massive stars, the Schwarzschild radius is already too big. For example, if you wanted to allow a 10-solar-mass star to settle down as a neutron star, about 10 km in diameter, it already inside its Schwarzschild radius and is doomed to collapse! Stars can’t ‘know’ that they should shed ...
Document
... a) It generates more heat and its core eventually collapses. b) It cannot fuse elements heavier than carbon. c) Gravity is weakened by its high luminosity. d) It is most often found as part of a binary system. 22. What is a planetary nebula? a) A planet surrounded by a glowing shell of gas. b) The d ...
... a) It generates more heat and its core eventually collapses. b) It cannot fuse elements heavier than carbon. c) Gravity is weakened by its high luminosity. d) It is most often found as part of a binary system. 22. What is a planetary nebula? a) A planet surrounded by a glowing shell of gas. b) The d ...
Name: Notes – #45 The Diverse Sizes of Stars 1. A Hertzsprung
... of energy stars emit is proportional to their surface temperature to the ______ power. 4. A star that is twice as hot as another star with the same surface area emits ______ times more energy per second. 5. What is the equation for the luminosity of a star? 6. Super giants tend to have surface tempe ...
... of energy stars emit is proportional to their surface temperature to the ______ power. 4. A star that is twice as hot as another star with the same surface area emits ______ times more energy per second. 5. What is the equation for the luminosity of a star? 6. Super giants tend to have surface tempe ...
21. Solar System Formation
... For this to happen, the ‘freefall’ time, tff, must be less than the ‘sound-crossing’ time, tsc. There is a minimum size (and mass) for clouds which can collapse. ...
... For this to happen, the ‘freefall’ time, tff, must be less than the ‘sound-crossing’ time, tsc. There is a minimum size (and mass) for clouds which can collapse. ...
Chapter14- Our Galaxy - SFA Physics and Astronomy
... Atomic hydrogen emits a spectral line with a wavelength of 21 cm – in the radio! ...
... Atomic hydrogen emits a spectral line with a wavelength of 21 cm – in the radio! ...
Slide 1 - cosmos.esa.int
... • But the most likely detection is through the diffuse neutrino background. If they occur at low redshift, they will fit directly in the GADZOOKS energy band. ...
... • But the most likely detection is through the diffuse neutrino background. If they occur at low redshift, they will fit directly in the GADZOOKS energy band. ...
Chapter 25 Study guide Answer Key
... 11) Inferring - Would you use parallax to determine the distance to a faraway star? Why or why not? No, too small 12) What types of stars are thought to be the remnants of supernova explosions? Neutron Stars 13) What is the correct life cycle of a sun-like star? Nebula – Main sequence – red giant – ...
... 11) Inferring - Would you use parallax to determine the distance to a faraway star? Why or why not? No, too small 12) What types of stars are thought to be the remnants of supernova explosions? Neutron Stars 13) What is the correct life cycle of a sun-like star? Nebula – Main sequence – red giant – ...
Universe and Solar System
... If this is true, then the galaxy is still expanding today… Hubble’s Law: The farther away a galaxy is, the faster it is ...
... If this is true, then the galaxy is still expanding today… Hubble’s Law: The farther away a galaxy is, the faster it is ...
NASC 1100
... This reduces the star’s luminosity and decreases the star’s radius, making its surface hotter. In the H-R diagram, the star goes down and to the left. All low-mass stars fuse helium into carbon at nearly the same rate they have almost the same luminosity, but differ in temperature. ...
... This reduces the star’s luminosity and decreases the star’s radius, making its surface hotter. In the H-R diagram, the star goes down and to the left. All low-mass stars fuse helium into carbon at nearly the same rate they have almost the same luminosity, but differ in temperature. ...
Lec 25.2- STELLAR EVOLUTION SUMMARY
... In the meantime, the contracting core may grow so hot that it ignites and burns nuclear fuels other than hydrogen, beginning with helium. The star's subsequent behavior is complex, but, in general, it can be characterized as a sequence of gravitational contractions and nuclear ignitions. Each nuclea ...
... In the meantime, the contracting core may grow so hot that it ignites and burns nuclear fuels other than hydrogen, beginning with helium. The star's subsequent behavior is complex, but, in general, it can be characterized as a sequence of gravitational contractions and nuclear ignitions. Each nuclea ...
formation1
... spiral arms are barely moving, the Sun passes in and out of spiral arms several times each orbit. Gas clouds also orbit at the same speed as the Sun. But when gas clouds pass through the spiral arms they become compressed. ...
... spiral arms are barely moving, the Sun passes in and out of spiral arms several times each orbit. Gas clouds also orbit at the same speed as the Sun. But when gas clouds pass through the spiral arms they become compressed. ...
(the factor f star in the Drake equation. Recall it
... The clumping of the mass at first resulted in dust clouds (of helium and hydrogen) but as it progressed, the centers of the more massive clouds and the pressure due to the gravitational attraction got larger and larger in them. Eventually, the pressure was so great that the nuclei of the atoms star ...
... The clumping of the mass at first resulted in dust clouds (of helium and hydrogen) but as it progressed, the centers of the more massive clouds and the pressure due to the gravitational attraction got larger and larger in them. Eventually, the pressure was so great that the nuclei of the atoms star ...
Star formation
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as ""stellar nurseries"" or ""star-forming regions"", collapse to form stars. As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star formation process, and the study of protostars and young stellar objects as its immediate products. It is closely related to planet formation, another branch of astronomy. Star formation theory, as well as accounting for the formation of a single star, must also account for the statistics of binary stars and the initial mass function.In June 2015, astronomers reported evidence for Population III stars in the Cosmos Redshift 7 galaxy at z = 6.60. Such stars are likely to have existed in the very early universe (i.e., at high redshift), and may have started the production of chemical elements heavier than hydrogen that are needed for the later formation of planets and life as we know it.