SO FAR:
... • Properties of Interstellar Dust • Milky Way and spiral galaxy morphology • Nuclear bulge • Disk • Stellar halo • Dark matter halo • Chemical enrichment • Measuring chemical abundances – Absorption lines (stars) – Continuum energy distributions (stars) – Emission lines (H II regions) • Star-forming ...
... • Properties of Interstellar Dust • Milky Way and spiral galaxy morphology • Nuclear bulge • Disk • Stellar halo • Dark matter halo • Chemical enrichment • Measuring chemical abundances – Absorption lines (stars) – Continuum energy distributions (stars) – Emission lines (H II regions) • Star-forming ...
Biography of a Star - Max-Planck
... Sun has increased its radius a hundredfold, and shines with a reddish light up to 5,000 times as brightly as it does at present: it has become a red giant. Accordingly, it migrates in the Hertzsprung-Russell diagram to the giant sequence. “Recording such a biography requires numerical programs that ...
... Sun has increased its radius a hundredfold, and shines with a reddish light up to 5,000 times as brightly as it does at present: it has become a red giant. Accordingly, it migrates in the Hertzsprung-Russell diagram to the giant sequence. “Recording such a biography requires numerical programs that ...
Integrative Studies 410 Our Place in the Universe
... • Flaws: – Observations made only in visible spectrum – Did not take into account absorption by interstellar gas and dust ...
... • Flaws: – Observations made only in visible spectrum – Did not take into account absorption by interstellar gas and dust ...
Integrative Studies 410 Our Place in the Universe
... The Mass of the Galaxy • Can be determined using Kepler’s 3rd Law – Solar System: the orbital velocities of planets determined by mass of Sun – Galaxy: orbital velocities of stars are determined by total mass of the galaxy contained within that star’s orbit ...
... The Mass of the Galaxy • Can be determined using Kepler’s 3rd Law – Solar System: the orbital velocities of planets determined by mass of Sun – Galaxy: orbital velocities of stars are determined by total mass of the galaxy contained within that star’s orbit ...
CST Prep- 8th Grade Astronomy
... 10. One of the most powerful energy sources in the universe is a(n) __________________. 11. According to the ___________ ___________ ___________, at one time all of the contents of the universe were compressed into a very small volume. 12. A small, hot, dim star that no longer generates energy by nu ...
... 10. One of the most powerful energy sources in the universe is a(n) __________________. 11. According to the ___________ ___________ ___________, at one time all of the contents of the universe were compressed into a very small volume. 12. A small, hot, dim star that no longer generates energy by nu ...
Solutions Assignment #3
... Aldebaran, Antares, and Canopus have luminosity classes other than V, which means that they have left the main sequence and are no longer burning hydrogen in their cores. k. Spica is the most massive of the main-sequence stars listed because it has the hottest spectral type of the main-sequence star ...
... Aldebaran, Antares, and Canopus have luminosity classes other than V, which means that they have left the main sequence and are no longer burning hydrogen in their cores. k. Spica is the most massive of the main-sequence stars listed because it has the hottest spectral type of the main-sequence star ...
The Properties of Stars
... The blue star (A) is moving away from us, so its spectrum is red-shifted while that of the red star (B) is blue-shifted. When the stars arrive at the points P, Q, R, and S they are moving across our line of sight so we see no redshift. ...
... The blue star (A) is moving away from us, so its spectrum is red-shifted while that of the red star (B) is blue-shifted. When the stars arrive at the points P, Q, R, and S they are moving across our line of sight so we see no redshift. ...
RED DWARFS AND THE END OF THE MAIN SEQUENCE
... either become large in size, so that R∗ increases and the star becomes “giant”. Alternately, the star can remain small and increase its temperature, thereby becoming a “blue dwarf”. The mass of the star determines the size of the luminosity problem that it faces near the end of its life. Which one o ...
... either become large in size, so that R∗ increases and the star becomes “giant”. Alternately, the star can remain small and increase its temperature, thereby becoming a “blue dwarf”. The mass of the star determines the size of the luminosity problem that it faces near the end of its life. Which one o ...
The winter triangle - NRC Publications Archive
... times that of the Sun. Our Sun is turning 4 million tonnes of itself into energy per second. Beltegeux is annihilating 400,000 million tonnes of itself per second. Even though it has about 10 times the mass of the Sun, it is easy to see that it cannot keep this up for long. The Sun has been burning ...
... times that of the Sun. Our Sun is turning 4 million tonnes of itself into energy per second. Beltegeux is annihilating 400,000 million tonnes of itself per second. Even though it has about 10 times the mass of the Sun, it is easy to see that it cannot keep this up for long. The Sun has been burning ...
Universe 8e Lecture Chapter 17 Nature of Stars
... Spectral Types: Stars are classified into spectral types (subdivisions of the spectral classes O, B, A, F, G, K, and M), based on the major patterns of spectral lines in their spectra. The spectral class and type of a star is directly related to its surface temperature: O stars are the hottest and M ...
... Spectral Types: Stars are classified into spectral types (subdivisions of the spectral classes O, B, A, F, G, K, and M), based on the major patterns of spectral lines in their spectra. The spectral class and type of a star is directly related to its surface temperature: O stars are the hottest and M ...
Stars I - Astronomy Centre
... Binary Stars • About half of all stars occur in binary systems • Each star feels an equal force towards the other, but the lower mass star will experience a greater acceleration (Newton’s 2nd law) • If the two stars were initially at rest, they would meet at a point closer to the more massive star ...
... Binary Stars • About half of all stars occur in binary systems • Each star feels an equal force towards the other, but the lower mass star will experience a greater acceleration (Newton’s 2nd law) • If the two stars were initially at rest, they would meet at a point closer to the more massive star ...
Star Life
... 17) Hydrogen is important to a stars development because of which of the following reasons? a. It allows for water to be formed inside of the star b. It fuses together to make radioactive uranium and releases energy used to fuel the star c. It has only one neutron which allows neutron star to be bor ...
... 17) Hydrogen is important to a stars development because of which of the following reasons? a. It allows for water to be formed inside of the star b. It fuses together to make radioactive uranium and releases energy used to fuel the star c. It has only one neutron which allows neutron star to be bor ...
Lecture 4 Hydrostatic equilibrium
... the star. Hence changes that involve substantial losses or gains of energy can not take place on timescales shorter than ...
... the star. Hence changes that involve substantial losses or gains of energy can not take place on timescales shorter than ...
We Are Stardust: Synthesis of the Elements Essential for Life Aparna
... • This method of self-sustenance by the Sun (and all stars) against total collapse under their own gravity not only generates the energy but the very elements required for life as we know it. Furthermore, the Sun and other stars are extremely stable in this phase of their lives, because they have ...
... • This method of self-sustenance by the Sun (and all stars) against total collapse under their own gravity not only generates the energy but the very elements required for life as we know it. Furthermore, the Sun and other stars are extremely stable in this phase of their lives, because they have ...
Planet Mass ~13 M E
... • Rule: to determine if a feature is periodic, you need to see it replicated at least twice, and preferably 3-5 times • Rule: use two or more comparison stars, as any dip/bump might be in the comp rather than the target ...
... • Rule: to determine if a feature is periodic, you need to see it replicated at least twice, and preferably 3-5 times • Rule: use two or more comparison stars, as any dip/bump might be in the comp rather than the target ...
Test 3 Version 3 1. Milky Way halo stars follow: (a) differential
... A to an outside observer, an object falls into the black hole very quickly. B an outside observer will never see an object reach the black hole. C an observer falling into a black hole takes a very short time to reach the object at its center. D an outside observer loses contact with an observer fal ...
... A to an outside observer, an object falls into the black hole very quickly. B an outside observer will never see an object reach the black hole. C an observer falling into a black hole takes a very short time to reach the object at its center. D an outside observer loses contact with an observer fal ...
STARS AND CONSTELLATIONS
... d. In the constellation is a source of powerful x-rays e. An elliptical galaxy in Virgo - Libra, the balance a. Scales of Justice b. Constellation with a green star, not too many green stars known. c. Constellation is a logo for the US Justice System - Scorpio, the Scorpion a. The sting of death b. ...
... d. In the constellation is a source of powerful x-rays e. An elliptical galaxy in Virgo - Libra, the balance a. Scales of Justice b. Constellation with a green star, not too many green stars known. c. Constellation is a logo for the US Justice System - Scorpio, the Scorpion a. The sting of death b. ...
Test 1, Feb. 2, 2016 - Brock physics
... 7. About one quarter of material in a nebula is (a) dust. (b) hydrogen. (c) helium. 8. Which one of these stars spends more time in protostar stage? (a) 1 solar mass star. (b) 10 solar mass star. 9. The stronger is the force of gravity on a clock, the faster it runs. (a) True. (b) False. 10. During ...
... 7. About one quarter of material in a nebula is (a) dust. (b) hydrogen. (c) helium. 8. Which one of these stars spends more time in protostar stage? (a) 1 solar mass star. (b) 10 solar mass star. 9. The stronger is the force of gravity on a clock, the faster it runs. (a) True. (b) False. 10. During ...
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.