Student Worksheet - Indiana University Astronomy
... young star cluster near its center. The dust lanes appear dark because they obscure visible light, and are thus seen in silhouette against the brighter, glowing, hydrogen gas. Surrounding the red nebula is a blue reflection nebula, especially bright at northern end. The reflection nebula glows by re ...
... young star cluster near its center. The dust lanes appear dark because they obscure visible light, and are thus seen in silhouette against the brighter, glowing, hydrogen gas. Surrounding the red nebula is a blue reflection nebula, especially bright at northern end. The reflection nebula glows by re ...
chapter-30-pp
... Are there other types of “red shifts” ? Yes-- A gravitational red shift occurs when light is affected by strong gravitational forces—like those at the surface of a star or in the vicinity of a black hole. A cosmological red shift only begins to affect the light from galaxies at great distances from ...
... Are there other types of “red shifts” ? Yes-- A gravitational red shift occurs when light is affected by strong gravitational forces—like those at the surface of a star or in the vicinity of a black hole. A cosmological red shift only begins to affect the light from galaxies at great distances from ...
B/W
... (plot of Ls vs. Teff ): and Colour–Magnitude Diagram (e.g. plot of V vs. B-V) From diagrams for nearby stars of known distance we deduce: 1. About 90% of stars lie on the main sequence (broad band passing diagonally across the diagram) 2. Two groups are very much more luminous than MS stars (giants ...
... (plot of Ls vs. Teff ): and Colour–Magnitude Diagram (e.g. plot of V vs. B-V) From diagrams for nearby stars of known distance we deduce: 1. About 90% of stars lie on the main sequence (broad band passing diagonally across the diagram) 2. Two groups are very much more luminous than MS stars (giants ...
The Family of Stars
... Magnetic fields are amplified up to B ~ 109 – 1015 G. (up to 1012 times the average magnetic field of the sun) ...
... Magnetic fields are amplified up to B ~ 109 – 1015 G. (up to 1012 times the average magnetic field of the sun) ...
Name: ______________________________# __________ Study Guide is due WEDNESDAY November 2
... 1. What branch of earth science deals with studying the objects in space? ...
... 1. What branch of earth science deals with studying the objects in space? ...
Formation of the Oort Cloud28 Mar Assignment for Fri •
... a function of its semi‐major axis for different external perturbers. Dashed curves are for perturbers from the present galactic environment. Solid curves are for assumed perturbers in an early galactic environment. ...
... a function of its semi‐major axis for different external perturbers. Dashed curves are for perturbers from the present galactic environment. Solid curves are for assumed perturbers in an early galactic environment. ...
White Dwarfs, Neutron Stars, and Black Holes
... Tcore 6 108 K Neon fusion Tcore 1.5109 K Oxygen fusion Tcore 2109 K Silicon fusion Tcore 3109 K Only stars with ZAMS masses greater than 20 solar masses will undergo silicon fusion. The most tightly-bound element is 26Fe56. It can release energy by neither fusion nor fission. ...
... Tcore 6 108 K Neon fusion Tcore 1.5109 K Oxygen fusion Tcore 2109 K Silicon fusion Tcore 3109 K Only stars with ZAMS masses greater than 20 solar masses will undergo silicon fusion. The most tightly-bound element is 26Fe56. It can release energy by neither fusion nor fission. ...
Geology Lab Final Exam
... Choose a total of 20 vocabulary words from your combined labs that you are not familiar with and write their definition—You can choose more. Quiz 3 is DUE on the day of your lab final exam. ...
... Choose a total of 20 vocabulary words from your combined labs that you are not familiar with and write their definition—You can choose more. Quiz 3 is DUE on the day of your lab final exam. ...
PPT
... Easy to show that Stark broadening should easily be detectable: ΔE ~ pE ~ (a0 e/Z) (e/r2) ~ n2/3 ~ g2/3 which is sensitive to density, hence to gravity! Combine gravitational redshift with g, get M and R. In practice, bursters spin rapidly, so cannot be done with current instruments ...
... Easy to show that Stark broadening should easily be detectable: ΔE ~ pE ~ (a0 e/Z) (e/r2) ~ n2/3 ~ g2/3 which is sensitive to density, hence to gravity! Combine gravitational redshift with g, get M and R. In practice, bursters spin rapidly, so cannot be done with current instruments ...
AST 301 Introduction to Astronomy - University of Texas Astronomy
... to about ½ AU, and it will become more than 1000 times more luminous than it is now. Life will not be pleasant on Earth. The core of the Sun will be mostly helium, and will continue to contract and heat up. When the temperature in the core reaches about 108 K (about 1 billion years after the Sun lea ...
... to about ½ AU, and it will become more than 1000 times more luminous than it is now. Life will not be pleasant on Earth. The core of the Sun will be mostly helium, and will continue to contract and heat up. When the temperature in the core reaches about 108 K (about 1 billion years after the Sun lea ...
Classifying Stars (pages 753–754) Key Concept: Characteristics
... seems to move tells an astronomer how far the star is from Earth. ...
... seems to move tells an astronomer how far the star is from Earth. ...
Mark Rubin
... • The primordial (population III) stars are formed out of a pristine environment, where the cooling agents are limited to primordial, H-based molecules only which are able to cool the gas down to temperatures ~ 102 K. • Therefore the mass of primordial stars should be relatively large and their spe ...
... • The primordial (population III) stars are formed out of a pristine environment, where the cooling agents are limited to primordial, H-based molecules only which are able to cool the gas down to temperatures ~ 102 K. • Therefore the mass of primordial stars should be relatively large and their spe ...
THE NAMING OF STARS AND THE STUDY OF PROTOSTARS D. R.
... It is considered that stars are formed from protostars which are large clouds of material which mainly under gravity, coalesce to give 1, or 2 or 3 or more centres. Some of these centres are sufficiently large that they give stars. The result is that about 65% of stars are in binary systems and less ...
... It is considered that stars are formed from protostars which are large clouds of material which mainly under gravity, coalesce to give 1, or 2 or 3 or more centres. Some of these centres are sufficiently large that they give stars. The result is that about 65% of stars are in binary systems and less ...
Beyond solar system
... millimeter, divide it by a million and then again by ten and we will have the size of an atom. Generally atoms are stable, but particular pressure, density and temperature conditions, can cause a reaction which will transform the atoms of a certain element into atoms of another element. Any alchemis ...
... millimeter, divide it by a million and then again by ten and we will have the size of an atom. Generally atoms are stable, but particular pressure, density and temperature conditions, can cause a reaction which will transform the atoms of a certain element into atoms of another element. Any alchemis ...
Chapter 16 Lesson 2: What is a Star
... Ribbons of gas called prominence leap out of the chromosphere that can also erupt like a volcano. 1. This is a solar flare which can last for minutes or hours. V. The Life of Stars a. New stars form in a nebula which is a cloud of dust and gas pulled together by gravity. 1. The temperature rises, hy ...
... Ribbons of gas called prominence leap out of the chromosphere that can also erupt like a volcano. 1. This is a solar flare which can last for minutes or hours. V. The Life of Stars a. New stars form in a nebula which is a cloud of dust and gas pulled together by gravity. 1. The temperature rises, hy ...
Hydrostatic Equilibrium of Hypothetical Quark Stars
... Department of Physics, Kyoto University Kyoto ...
... Department of Physics, Kyoto University Kyoto ...
3Nov_2014
... • We can follow a stars evolution on the HR diagram. • Lower mass stars move on to the main sequence, stay for a while, and eventually move through giant stages before becoming white dwarfs • Higher mass stars move rapidly off the main sequence and into the giant stages, eventually exploding in a su ...
... • We can follow a stars evolution on the HR diagram. • Lower mass stars move on to the main sequence, stay for a while, and eventually move through giant stages before becoming white dwarfs • Higher mass stars move rapidly off the main sequence and into the giant stages, eventually exploding in a su ...
The Hertzsprung-Russell Diagram
... Most stars lie in the main sequence because if a star is hotter it is brighter. Thus you would expect stars of the same size but different temperatures to form a diagonal line since “hotter means brighter” That Main-Sequence is steeper than a ‘same-size diagonal” shows that larger mass ‘normal’ star ...
... Most stars lie in the main sequence because if a star is hotter it is brighter. Thus you would expect stars of the same size but different temperatures to form a diagonal line since “hotter means brighter” That Main-Sequence is steeper than a ‘same-size diagonal” shows that larger mass ‘normal’ star ...
Extra-Solar Planets
... Mostly H and He (these two elements make up about 98% of our Solar System) ...
... Mostly H and He (these two elements make up about 98% of our Solar System) ...
The basic physical properties of a star Hydrostatic equilibrium
... • Energy generation in stars • Energy transport ...
... • Energy generation in stars • Energy transport ...
Stars in our Galaxy
... – Light travels at 300,000 km/s or about 9.5 trillion km in one year. – The nearest start to Earth other than the sun is Proxima Centauri which is 4.3 light years away or about 40 trillion km!!! ...
... – Light travels at 300,000 km/s or about 9.5 trillion km in one year. – The nearest start to Earth other than the sun is Proxima Centauri which is 4.3 light years away or about 40 trillion km!!! ...
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.