Sun and Other Stars Notes
... to the cooler position on the HR Diagram -The Sun grows to 8 times the mass of the Sun- (considered a high mass star) -What happens when the core becomes all Helium? -The Helium shell flashes causes it to be unstable, causing the outer layers to pulsate eventually becoming a planetary nebula -After ...
... to the cooler position on the HR Diagram -The Sun grows to 8 times the mass of the Sun- (considered a high mass star) -What happens when the core becomes all Helium? -The Helium shell flashes causes it to be unstable, causing the outer layers to pulsate eventually becoming a planetary nebula -After ...
Stellar Evolution Chapter 12
... b. Objects below this mass can only form in HI clouds. c. Objects below this mass are not hot enough to fuse normal hydrogen. d. They form too slowly and hot stars nearby clear the gas and dust quickly. e. Our telescopes do not have enough light gathering power to detect dim objects. ...
... b. Objects below this mass can only form in HI clouds. c. Objects below this mass are not hot enough to fuse normal hydrogen. d. They form too slowly and hot stars nearby clear the gas and dust quickly. e. Our telescopes do not have enough light gathering power to detect dim objects. ...
Star Birth
... Thought Question What would happen to a contracting cloud fragment if it were not able to radiate away its thermal energy? A. It would continue contracting, but its temperature would not change B. Its mass would increase C. Its internal pressure would increase ...
... Thought Question What would happen to a contracting cloud fragment if it were not able to radiate away its thermal energy? A. It would continue contracting, but its temperature would not change B. Its mass would increase C. Its internal pressure would increase ...
Lecture6
... • As already noted in Section (i), the interstellar matter (ISM) is not uniform, but clumpy. New stars are formed in these clumpy, cool, dense clouds called `dark nebulae’ in or near molecular clouds (cool clouds with CO and H2 molecules). Bursts of protostar formation takes place when these dense r ...
... • As already noted in Section (i), the interstellar matter (ISM) is not uniform, but clumpy. New stars are formed in these clumpy, cool, dense clouds called `dark nebulae’ in or near molecular clouds (cool clouds with CO and H2 molecules). Bursts of protostar formation takes place when these dense r ...
Journey to the Stars: Activities for Grades 9-12
... • The Universe is vast and estimated to be over ten billion years old. The current theory is that the Universe was created from an explosion called the Big Bang. Physical Setting 1.2b • Stars form when gravity causes clouds of molecules to contract until nuclear fusion of light elements into heavier ...
... • The Universe is vast and estimated to be over ten billion years old. The current theory is that the Universe was created from an explosion called the Big Bang. Physical Setting 1.2b • Stars form when gravity causes clouds of molecules to contract until nuclear fusion of light elements into heavier ...
www.NewYorkScienceTeacher.org/review
... observer cause the spectral lines to shift in wavelength. Depending on whether the wavelength is shorter or longer, the observer can determine if the star is moving toward or away from Earth. These shifts are called blueshifts and redshifts. The larger the shift, the higher the speed of motion. The ...
... observer cause the spectral lines to shift in wavelength. Depending on whether the wavelength is shorter or longer, the observer can determine if the star is moving toward or away from Earth. These shifts are called blueshifts and redshifts. The larger the shift, the higher the speed of motion. The ...
Test 3 Version 3 1. Milky Way halo stars follow: (a) differential
... 2. Which of the following is false: The Milky Way is (a) diffuse band of light across the sky, (b) a spiral galaxy, (c) the galaxy the sun is in, (d) the nearest galaxy outside our own. 3. Which one of the following statements is true? (a) stars in the halo are deficient in heavy elements, (b) stars ...
... 2. Which of the following is false: The Milky Way is (a) diffuse band of light across the sky, (b) a spiral galaxy, (c) the galaxy the sun is in, (d) the nearest galaxy outside our own. 3. Which one of the following statements is true? (a) stars in the halo are deficient in heavy elements, (b) stars ...
Investigate Stars and Galaxies - American Museum of Natural History
... Lower Level (40 minutes) Using their student worksheets, have students visit the following two locations to collect evidence about stars. They can explore individually, in pairs, or in small groups. ...
... Lower Level (40 minutes) Using their student worksheets, have students visit the following two locations to collect evidence about stars. They can explore individually, in pairs, or in small groups. ...
Intelligent Life in the Milky Way Galaxy
... Kepler-186f orbits a star with about 4% of the Sun's luminosity with an orbital period of 129.9 days and an orbital distance of 40% times that of Earth’s. ...
... Kepler-186f orbits a star with about 4% of the Sun's luminosity with an orbital period of 129.9 days and an orbital distance of 40% times that of Earth’s. ...
The Life of a Star
... Death: The outer layers falling inward rebound off of the dense iron core and explode outward in an explosion known as a Supernova, leaving either a Neutron Star or a Black Hole behind. ...
... Death: The outer layers falling inward rebound off of the dense iron core and explode outward in an explosion known as a Supernova, leaving either a Neutron Star or a Black Hole behind. ...
Omega Centauri
... Thanks to the new results on the multiple populations we are now looking at globular cluster (and cluster in general) stellar populations with new eyes. De facto, a new era on globular cluster research is started: 1) Many serious problems remain unsolved, and we still have a rather incoherent pictur ...
... Thanks to the new results on the multiple populations we are now looking at globular cluster (and cluster in general) stellar populations with new eyes. De facto, a new era on globular cluster research is started: 1) Many serious problems remain unsolved, and we still have a rather incoherent pictur ...
bildsten
... asteroseismic data from the Kepler and CoRoT satellites, while theoretical progress is driven by people and new computational tools. ...
... asteroseismic data from the Kepler and CoRoT satellites, while theoretical progress is driven by people and new computational tools. ...
Winter Stargazing - Trimble County Schools
... Finding Canis Minor • Look toward the Southwest in the late evening hours, and when you spot Orion, find his shoulders: Bellatrix, his western shoulder, and Betelgeuse, his eastern shoulder. • Make an imaginary line between the two stars from Bellatrix to Betelgeuse, and extend it outward toward th ...
... Finding Canis Minor • Look toward the Southwest in the late evening hours, and when you spot Orion, find his shoulders: Bellatrix, his western shoulder, and Betelgeuse, his eastern shoulder. • Make an imaginary line between the two stars from Bellatrix to Betelgeuse, and extend it outward toward th ...
Multi-physics simulations using a hierarchical interchangeable
... increases these bubbles grow until they blow away sizable fractions of the cluster gas and a free-flowing wind develops (4.37 Myr frame). The strong feedback then unbinds most of the gas of the cluster. At approximately 9.5 Myr the cluster ISM has been ejected—the gas visible in this frame originate ...
... increases these bubbles grow until they blow away sizable fractions of the cluster gas and a free-flowing wind develops (4.37 Myr frame). The strong feedback then unbinds most of the gas of the cluster. At approximately 9.5 Myr the cluster ISM has been ejected—the gas visible in this frame originate ...
Stages 12 to 14
... Stage 12 – Low Mass Stars The carbon rich core continues to contract and heat up. Carbon fusion requires a temperature of 500 to 600 million K. The core will contract until electron degeneracy pressure once again takes over, and contraction ends If the star is similar to the sun, the mass is too sm ...
... Stage 12 – Low Mass Stars The carbon rich core continues to contract and heat up. Carbon fusion requires a temperature of 500 to 600 million K. The core will contract until electron degeneracy pressure once again takes over, and contraction ends If the star is similar to the sun, the mass is too sm ...
Packet 3
... 12. How come when you go outside on an October night you see different stars than on an April night? 13. The Earth moves in 2 different ways thus the, 2 apparent motions of stars are caused by the earth’s R________________________ & R_________________________. 15. Describe blue shift: 14. The 3 actu ...
... 12. How come when you go outside on an October night you see different stars than on an April night? 13. The Earth moves in 2 different ways thus the, 2 apparent motions of stars are caused by the earth’s R________________________ & R_________________________. 15. Describe blue shift: 14. The 3 actu ...
HR Diagram, Star Clusters, and Stellar Evolution
... • When the core becomes pure He, a new evolutionary phase stars - the ascent to the Red Giant Branch (RGB) • Without energy generation, the core cannot support itself against gravitational collapse and so it begins to shrink; as it collapses it heats up • This heat is transferred to a thin shell ...
... • When the core becomes pure He, a new evolutionary phase stars - the ascent to the Red Giant Branch (RGB) • Without energy generation, the core cannot support itself against gravitational collapse and so it begins to shrink; as it collapses it heats up • This heat is transferred to a thin shell ...
February 13
... From Earth we can only measure a star’s parallax to about 100 pc. The distance to the center of the galaxy is 8 kpc or 80 times this distance. Why are parallax measurements so limited? What could you do to get parallax measurements for more distant stars? ...
... From Earth we can only measure a star’s parallax to about 100 pc. The distance to the center of the galaxy is 8 kpc or 80 times this distance. Why are parallax measurements so limited? What could you do to get parallax measurements for more distant stars? ...
Stellar kinematics
Stellar kinematics is the study of the movement of stars without needing to understand how they acquired their motion. This differs from stellar dynamics, which takes into account gravitational effects. The motion of a star relative to the Sun can provide useful information about the origin and age of a star, as well as the structure and evolution of the surrounding part of the Milky Way.In astronomy, it is widely accepted that most stars are born within molecular clouds known as stellar nurseries. The stars formed within such a cloud compose open clusters containing dozens to thousands of members. These clusters dissociate over time. Stars that separate themselves from the cluster's core are designated as members of the cluster's stellar association. If the remnant later drifts through the Milky Way as a coherent assemblage, then it is termed a moving group.