main-sequence stars
... more luminous and have diameters from 10-100 times greater than our sun. Super giants are giant stars that have diameters more than 100 times greater than our sun. These giant stars (but relatively cool) are very luminous. ...
... more luminous and have diameters from 10-100 times greater than our sun. Super giants are giant stars that have diameters more than 100 times greater than our sun. These giant stars (but relatively cool) are very luminous. ...
Stars Notes
... contracting gas and dust from a nebula become so dense and hot that nuclear fusion starts ...
... contracting gas and dust from a nebula become so dense and hot that nuclear fusion starts ...
superflares on Sun-like stars
... Many stars show flares similar to solar flares, and often such stellar flares are much more energetic than solar flares. The total energy of a solar flare is typically 1029 –1032 erg. There are much more energetic flares (1033 –1038 erg) in stars, especially in young stars with rapid rotation. These ...
... Many stars show flares similar to solar flares, and often such stellar flares are much more energetic than solar flares. The total energy of a solar flare is typically 1029 –1032 erg. There are much more energetic flares (1033 –1038 erg) in stars, especially in young stars with rapid rotation. These ...
Today`s Powerpoint
... Remember: stellar spectra show black-body radiation and absorption lines. ...
... Remember: stellar spectra show black-body radiation and absorption lines. ...
Star Birth: The Formation of Stars Jonathan Rowles
... Stars are born in dark clouds of gas and dust, at temperatures around 1040 degrees above absolute zero. These dark clouds can be seen against a glowing backdrop of stars. They contain between 5 to 500 solar masses of material. The dark clouds are disturbed by an outside influence and the centre be ...
... Stars are born in dark clouds of gas and dust, at temperatures around 1040 degrees above absolute zero. These dark clouds can be seen against a glowing backdrop of stars. They contain between 5 to 500 solar masses of material. The dark clouds are disturbed by an outside influence and the centre be ...
pdf format
... Shapley Maps the Galaxy • Distribution of globular clusters is not symmetric about our position in the Galaxy • 30% of G.C.s are found in only 2% of the sky toward ...
... Shapley Maps the Galaxy • Distribution of globular clusters is not symmetric about our position in the Galaxy • 30% of G.C.s are found in only 2% of the sky toward ...
AST121 Introduction to Astronomy
... These are red giants. Evidently, the higher mass stars have evolved into red giants. This is a typical characteristic of open clusters. ...
... These are red giants. Evidently, the higher mass stars have evolved into red giants. This is a typical characteristic of open clusters. ...
The “Tuning Fork” Diagram Galaxy Properties 1 “Early”
... Ratio Gaussian fit: • Convolution turns into multiplication in F.T. space. • F.T. of a Gaussian is a Gaussian. ...
... Ratio Gaussian fit: • Convolution turns into multiplication in F.T. space. • F.T. of a Gaussian is a Gaussian. ...
How the universe works – Answer Key Star dust is the building
... than a beam of light. When the sun fuses hydrogen into helium in its core, it produces a photon (particle) of light. It takes a photon 1000s of years to get from the core of the sun, to the surface. Once it hits the surface, it only takes 8 minutes to get to earth. Photons are the source of light a ...
... than a beam of light. When the sun fuses hydrogen into helium in its core, it produces a photon (particle) of light. It takes a photon 1000s of years to get from the core of the sun, to the surface. Once it hits the surface, it only takes 8 minutes to get to earth. Photons are the source of light a ...
Astronomy and Our Origins
... Where did we come from? • Scientists believe the entire universe began as a single, one dimensional speck that exploded into existence. • This idea is called the Big Bang Theory! • Do we know for sure…of course not…we could be right or wrong. We will never know. • But we do have a lot of evidence t ...
... Where did we come from? • Scientists believe the entire universe began as a single, one dimensional speck that exploded into existence. • This idea is called the Big Bang Theory! • Do we know for sure…of course not…we could be right or wrong. We will never know. • But we do have a lot of evidence t ...
coSmoS in youR PockET
... The Universe is everything that exists: all planets, stars, galaxies and all of the other objects in space. A galaxy is a large collection of stars, along with gas, dust and other stuff. The galaxy that we live in is called the Milky Way. A Star is a massive ball of luminous hot gas, held together ...
... The Universe is everything that exists: all planets, stars, galaxies and all of the other objects in space. A galaxy is a large collection of stars, along with gas, dust and other stuff. The galaxy that we live in is called the Milky Way. A Star is a massive ball of luminous hot gas, held together ...
review
... • A sequence of thermonuclear fusion processes inside massive stars can continue to transform the nuclei of elements such as carbon, oxygen, etc. into heavier nuclei AND also generate excess energy, up to a limit beyond which no further energy-producing reactions can occur. The element that is produ ...
... • A sequence of thermonuclear fusion processes inside massive stars can continue to transform the nuclei of elements such as carbon, oxygen, etc. into heavier nuclei AND also generate excess energy, up to a limit beyond which no further energy-producing reactions can occur. The element that is produ ...
Stars and the Main Sequence
... The star will settle into a hydrostatic and thermal equilibrium, where cooling is balanced by nuclear energy generation and there is no time dependence of any state variables. ...
... The star will settle into a hydrostatic and thermal equilibrium, where cooling is balanced by nuclear energy generation and there is no time dependence of any state variables. ...
qwk4
... A. A gravitational force and an electromagnetic force are canceling each other B. Only a gravitational force is acting on the piece of chalk C. Only an electromagnetic force is acting on the piece of chalk D. A gravitational force and a strong nuclear force are canceling each other ...
... A. A gravitational force and an electromagnetic force are canceling each other B. Only a gravitational force is acting on the piece of chalk C. Only an electromagnetic force is acting on the piece of chalk D. A gravitational force and a strong nuclear force are canceling each other ...
Universe Notes - Solon City Schools
... a. Red shift, and cosmic background radiation b. Cosmic background radiation: steady, but very dim signals in the form of microwaves that are emitted all over the sky i. Scientists believe that these microwaves are the remains of the radiation produced during the Big Bang ...
... a. Red shift, and cosmic background radiation b. Cosmic background radiation: steady, but very dim signals in the form of microwaves that are emitted all over the sky i. Scientists believe that these microwaves are the remains of the radiation produced during the Big Bang ...
The Life of a Star
... it cools down further, the star becomes a black dwarf. Now, the star is finished with its life cycle. High-mass stars explode after their red giant stage. If the star is massive enough, it will eventually become a black hole. Other high-mass red giants may become neutron stars. A neutron star is usu ...
... it cools down further, the star becomes a black dwarf. Now, the star is finished with its life cycle. High-mass stars explode after their red giant stage. If the star is massive enough, it will eventually become a black hole. Other high-mass red giants may become neutron stars. A neutron star is usu ...
How Is a Star`s Color Related to Its Temperature? - d
... 5. Look for patterns in your graph. Compare it to the following H-R diagram . 6. Label the main sequence, red super giants, and the white dwarf stars. ...
... 5. Look for patterns in your graph. Compare it to the following H-R diagram . 6. Label the main sequence, red super giants, and the white dwarf stars. ...
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.