GEARS Workshop Monday - Georgia Southern University
... The Chandra data shows bright X-ray sources in this field, most of which are young stars. In this image, red, green, and blue represent low, medium, and high energy X-rays. The Chandra data have been overlaid on the Hubble Space Telescope image to show the context of these X-ray data. Very few X-ray ...
... The Chandra data shows bright X-ray sources in this field, most of which are young stars. In this image, red, green, and blue represent low, medium, and high energy X-rays. The Chandra data have been overlaid on the Hubble Space Telescope image to show the context of these X-ray data. Very few X-ray ...
Nebulae
... The Sun is just a star, an average star. It just looks so big and bright, because it is so close, compared with other stars. ...
... The Sun is just a star, an average star. It just looks so big and bright, because it is so close, compared with other stars. ...
Introduction to Astrophysics, Lecture 13
... the centre orbit much more quickly, so the arms should `wind up’. It is thought that instead the spiral structure is due to a density wave propagating around the galaxy. ...
... the centre orbit much more quickly, so the arms should `wind up’. It is thought that instead the spiral structure is due to a density wave propagating around the galaxy. ...
Stellar Evolution of Single Stars
... Stages in the post-M. S. life of a Sun-like star. 1) Core hydrogen exhaustion. H becomes scarce in the core –––> decreased energy production –––> Unbalanced gravity –––> contraction Then the core begins a nearly adiabatic Kelvin-Helmholtz contraction. ρc, Tc, and L increase. ...
... Stages in the post-M. S. life of a Sun-like star. 1) Core hydrogen exhaustion. H becomes scarce in the core –––> decreased energy production –––> Unbalanced gravity –––> contraction Then the core begins a nearly adiabatic Kelvin-Helmholtz contraction. ρc, Tc, and L increase. ...
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... masses, no known force can stop the collapse. • The electron degeneracy cannot stop the gravitational force • The neutron degeneracy cannot stop the gravitational force of collapse • The star collapses to a radius of “zero” • Now the star has infinite density and gravity—called a Singularity • ...
... masses, no known force can stop the collapse. • The electron degeneracy cannot stop the gravitational force • The neutron degeneracy cannot stop the gravitational force of collapse • The star collapses to a radius of “zero” • Now the star has infinite density and gravity—called a Singularity • ...
Phys133 Sample MidTerm #2 Covers Chs.10
... 4) What happens when a star exhausts its core hydrogen supply? A) It contracts, becoming hotter and brighter. B) Its core contracts, but its outer layers expand and the star becomes bigger but cooler and therefore remains at the same brightness. C) It expands, becoming bigger but dimmer. D) It contr ...
... 4) What happens when a star exhausts its core hydrogen supply? A) It contracts, becoming hotter and brighter. B) Its core contracts, but its outer layers expand and the star becomes bigger but cooler and therefore remains at the same brightness. C) It expands, becoming bigger but dimmer. D) It contr ...
The Missing Mass
... • The orbits in spiral galaxies are not quite circles – they are ellipses. These ellipses are slightly tilted with respect to each other. ...
... • The orbits in spiral galaxies are not quite circles – they are ellipses. These ellipses are slightly tilted with respect to each other. ...
Lecture 10: The Milky Way
... The most important of these variables are Cepheid variables – with luminosities of up to 104 L they can be seen in distant galaxies (Polaris is a nearby Cepheid variable). Their period is related to their luminosity – so if you observe one pulsating, you can calculate its absolute luminosity and so ...
... The most important of these variables are Cepheid variables – with luminosities of up to 104 L they can be seen in distant galaxies (Polaris is a nearby Cepheid variable). Their period is related to their luminosity – so if you observe one pulsating, you can calculate its absolute luminosity and so ...
Two prevailing theories on how the universe was created
... galaxy. This is a photo graph made by the Hubble telescope of deep space. What was once thought to be individual stars turned out to be huge collections of stars. ...
... galaxy. This is a photo graph made by the Hubble telescope of deep space. What was once thought to be individual stars turned out to be huge collections of stars. ...
Earth Science 25.2B : Stellar Evolution
... Are neutron stars made of the most dense material in the universe possible? The answer is no! During a supernova event, remnants of stars at least 20 times more massive than our sun apparently collapse into objects even smaller and denser than neutron stars. Dense objects with gravity so stron ...
... Are neutron stars made of the most dense material in the universe possible? The answer is no! During a supernova event, remnants of stars at least 20 times more massive than our sun apparently collapse into objects even smaller and denser than neutron stars. Dense objects with gravity so stron ...
Ay 1 – Final Exam
... Colliding stars form many black holes. Collisions of the interstellar gas clouds will compress them & trigger formation of new stars. A long tidal tail or bridge will form of the outskirts of the galaxies The merged system might become an elliptical galaxy. ...
... Colliding stars form many black holes. Collisions of the interstellar gas clouds will compress them & trigger formation of new stars. A long tidal tail or bridge will form of the outskirts of the galaxies The merged system might become an elliptical galaxy. ...
Nobel Prize in Physics for Accelerating Universe
... as in our oceans. • Heavy water is D2O instead of H2O, where D is deuterium which has a nucleus with one proton and one neutron. • The comet comes from the Kupier belt (30-50 AU) while most comets come from the Oort cloud (> 5000 AU). ...
... as in our oceans. • Heavy water is D2O instead of H2O, where D is deuterium which has a nucleus with one proton and one neutron. • The comet comes from the Kupier belt (30-50 AU) while most comets come from the Oort cloud (> 5000 AU). ...
15.2 Characteristics of Stars
... bunch of types of radiation when they want to talk about them as a group. Radiation is energy that travels and spreads out as it goes– visible light that comes from a lamp in your house and radio waves that come from a radio station are two types of ...
... bunch of types of radiation when they want to talk about them as a group. Radiation is energy that travels and spreads out as it goes– visible light that comes from a lamp in your house and radio waves that come from a radio station are two types of ...
Gravitational mass
... If the light from one of these stars passes very near the Sun, whose gravity bends the rays, the star will appear higher than it actually is. ...
... If the light from one of these stars passes very near the Sun, whose gravity bends the rays, the star will appear higher than it actually is. ...
Diapositiva 1
... Halo of the Cat's Eye Machine with which the photo has been taken: Nordic Optical Telescope. Explanation: The Cat’s Eye Nebula (NGC 6543) is one of the best known planetary nebulae in the sky. Its haunting symmetries are seen in the very central region of this stunning false-color picture, processe ...
... Halo of the Cat's Eye Machine with which the photo has been taken: Nordic Optical Telescope. Explanation: The Cat’s Eye Nebula (NGC 6543) is one of the best known planetary nebulae in the sky. Its haunting symmetries are seen in the very central region of this stunning false-color picture, processe ...
Microsoft Power Point version
... • As one moves to the upper-left of the main sequence: • stars become more massive • stars become more luminous • stars become fewer in number ...
... • As one moves to the upper-left of the main sequence: • stars become more massive • stars become more luminous • stars become fewer in number ...
9 - WordPress.com
... principles of physics. Our understanding of the cosmos draws upon models, theories and laws in our endeavour to seek explanations for the myriad of observations made by various instruments at many different wavelengths. Techniques, such as imaging, photometry, astrometry and spectroscopy, allow us t ...
... principles of physics. Our understanding of the cosmos draws upon models, theories and laws in our endeavour to seek explanations for the myriad of observations made by various instruments at many different wavelengths. Techniques, such as imaging, photometry, astrometry and spectroscopy, allow us t ...
Stellar Explosions
... When enough material has accreted Fusion can reignite, burning off the new material Material keeps being transferred to the white dwarf, and the process repeats ...
... When enough material has accreted Fusion can reignite, burning off the new material Material keeps being transferred to the white dwarf, and the process repeats ...
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.