Astronomy – Interpreting Main Sequence Star Data The
... Astronomy – Interpreting Main Sequence Star Data The classification of stars by surface temperature and spectral pattern is a painstaking process requiring the efforts of many scientists from hundreds of observatories around the world. To make it easier to refer to the different types of main sequen ...
... Astronomy – Interpreting Main Sequence Star Data The classification of stars by surface temperature and spectral pattern is a painstaking process requiring the efforts of many scientists from hundreds of observatories around the world. To make it easier to refer to the different types of main sequen ...
Main Sequence Star What is happening in the core? How does the
... Main Sequence Star What is happening in the core? How does the star support itself? ...
... Main Sequence Star What is happening in the core? How does the star support itself? ...
Name: ____________________________ Date: _____________ Per. _________ Stars Study Guide (Ch. 21)
... 13. What is a graph that shows the relationship between absolute brightness and surface temperature of a star? __________________ ...
... 13. What is a graph that shows the relationship between absolute brightness and surface temperature of a star? __________________ ...
Jeopardy Questions
... Q: In what parts of a spiral galaxy would you expect to see more O and B stars, and are they young or old? A: Spiral arms have many more O and B stars because they are areas of active star formation, and they are young because O/B stars only live for short amounts of time. ...
... Q: In what parts of a spiral galaxy would you expect to see more O and B stars, and are they young or old? A: Spiral arms have many more O and B stars because they are areas of active star formation, and they are young because O/B stars only live for short amounts of time. ...
Stellar Evolution: After the Main Sequence
... • The duration of a star’s main sequence lifetime depends on the amount of hydrogen in the star’s core and the rate at which the hydrogen is consumed • The more massive a star, the shorter is its mainsequence lifetime ...
... • The duration of a star’s main sequence lifetime depends on the amount of hydrogen in the star’s core and the rate at which the hydrogen is consumed • The more massive a star, the shorter is its mainsequence lifetime ...
The Fates of Stars Mass-Luminosity Relation: Lifetime Relation:
... be perfectly accurate; just show the general trend.) Remember that the temp. axis goes backwards. 2. Calculate the mass and total lifetime of one of these stars and fill this entries in the table. Make sure to translate the lifetime to years. (You may do the other stars if you have extra time.) 3. U ...
... be perfectly accurate; just show the general trend.) Remember that the temp. axis goes backwards. 2. Calculate the mass and total lifetime of one of these stars and fill this entries in the table. Make sure to translate the lifetime to years. (You may do the other stars if you have extra time.) 3. U ...
source
... be perfectly accurate; just show the general trend.) Remember that the temp. axis goes backwards. 2. Calculate the mass and total lifetime of one of these stars and fill this entries in the table. Make sure to translate the lifetime to years. (You may do the other stars if you have extra time.) 3. U ...
... be perfectly accurate; just show the general trend.) Remember that the temp. axis goes backwards. 2. Calculate the mass and total lifetime of one of these stars and fill this entries in the table. Make sure to translate the lifetime to years. (You may do the other stars if you have extra time.) 3. U ...
Stellar Evolution and the HR Diagram Study Guide
... Which star will appear brighter in the night sky, a star with an apparent magnitude of 0 or a star with an apparent magnitude of +1? Star with apparent magnitude of 0 ...
... Which star will appear brighter in the night sky, a star with an apparent magnitude of 0 or a star with an apparent magnitude of +1? Star with apparent magnitude of 0 ...
The Hertzsprung-Russell Diagram
... Types of Stars • Stars that fit the expected pattern – cool and dim; hot and bright – are called main sequence stars – Most stars fall in the region called main sequence. ...
... Types of Stars • Stars that fit the expected pattern – cool and dim; hot and bright – are called main sequence stars – Most stars fall in the region called main sequence. ...
Slide 1 - Fort Bend ISD
... standard distance from the Earth • Scientists study globular clusters to compare brightness of stars • All about same distance from Earth ...
... standard distance from the Earth • Scientists study globular clusters to compare brightness of stars • All about same distance from Earth ...
No Slide Title
... They enter the main sequence at various points depending on how much mass they collect ...
... They enter the main sequence at various points depending on how much mass they collect ...
Chapter 28.3 Topic questions
... 11. Red Super Giant stars have surface temperatures that are cooler than our earth, so why do they have greater luminosity than the sun? 12. The H-R diagram also includes which stars that are near the end of their life, what are these stars called? 13. A star begins it life in a cloud of gas and dus ...
... 11. Red Super Giant stars have surface temperatures that are cooler than our earth, so why do they have greater luminosity than the sun? 12. The H-R diagram also includes which stars that are near the end of their life, what are these stars called? 13. A star begins it life in a cloud of gas and dus ...
Lecture 16 - Yet More Evolution of Stars
... • Solar mass star produce elements up to Carbon and Oxygen – these are ejected into planetary nebula and then recycled into new stars and planets • Supernova produce all of the heavier elements – Elements up to Iron can be produced by fusion – Elements heavier than iron are produced by the neutrons ...
... • Solar mass star produce elements up to Carbon and Oxygen – these are ejected into planetary nebula and then recycled into new stars and planets • Supernova produce all of the heavier elements – Elements up to Iron can be produced by fusion – Elements heavier than iron are produced by the neutrons ...
Star Life Cycles
... Eventually Red Super Giants will explode in something called a Supernova. A supernova occurs when a star with many times the mass of the Sun runs out of usable nuclear fuel. The Crab Nebula is an example of the remnants of supernova. ...
... Eventually Red Super Giants will explode in something called a Supernova. A supernova occurs when a star with many times the mass of the Sun runs out of usable nuclear fuel. The Crab Nebula is an example of the remnants of supernova. ...
Notes: Astronomy and Groups of Stars
... - galaxies are also in clusters. Our cluster is called the Local Group (30 galaxies) patterns or picture of stars not bound by gravity. 88 constellations specific one’s are only seen during specific times of the year due to the earth’s revolution changing our view of the night sky. ...
... - galaxies are also in clusters. Our cluster is called the Local Group (30 galaxies) patterns or picture of stars not bound by gravity. 88 constellations specific one’s are only seen during specific times of the year due to the earth’s revolution changing our view of the night sky. ...
mass per nucleon
... groups of young stars, found mainly in the disk of the Galaxy. Globular clusters are round, regular balls of old stars, found mainly in the halo of our Galaxy. ...
... groups of young stars, found mainly in the disk of the Galaxy. Globular clusters are round, regular balls of old stars, found mainly in the halo of our Galaxy. ...
Star
A star is a luminous sphere of plasma held together by its own gravity. The nearest star to Earth is the Sun. Other stars are visible from Earth during the night, appearing as a multitude of fixed luminous points in the sky due to their immense distance from Earth. Historically, the most prominent stars were grouped into constellations and asterisms, and the brightest stars gained proper names. Extensive catalogues of stars have been assembled by astronomers, which provide standardized star designations.For at least a portion of its life, a star shines due to thermonuclear fusion of hydrogen into helium in its core, releasing energy that traverses the star's interior and then radiates into outer space. Once the hydrogen in the core of a star is nearly exhausted, almost all naturally occurring elements heavier than helium are created by stellar nucleosynthesis during the star's lifetime and, for some stars, by supernova nucleosynthesis when it explodes. Near the end of its life, a star can also contain degenerate matter. Astronomers can determine the mass, age, metallicity (chemical composition), and many other properties of a star by observing its motion through space, luminosity, and spectrum respectively. The total mass of a star is the principal determinant of its evolution and eventual fate. Other characteristics of a star, including diameter and temperature, change over its life, while the star's environment affects its rotation and movement. A plot of the temperature of many stars against their luminosities, known as a Hertzsprung–Russell diagram (H–R diagram), allows the age and evolutionary state of a star to be determined.A star's life begins with the gravitational collapse of a gaseous nebula of material composed primarily of hydrogen, along with helium and trace amounts of heavier elements. Once the stellar core is sufficiently dense, hydrogen becomes steadily converted into helium through nuclear fusion, releasing energy in the process. The remainder of the star's interior carries energy away from the core through a combination of radiative and convective processes. The star's internal pressure prevents it from collapsing further under its own gravity. Once the hydrogen fuel at the core is exhausted, a star with at least 0.4 times the mass of the Sun expands to become a red giant, in some cases fusing heavier elements at the core or in shells around the core. The star then evolves into a degenerate form, recycling a portion of its matter into the interstellar environment, where it will contribute to the formation of a new generation of stars with a higher proportion of heavy elements. Meanwhile, the core becomes a stellar remnant: a white dwarf, a neutron star, or (if it is sufficiently massive) a black hole.Binary and multi-star systems consist of two or more stars that are gravitationally bound, and generally move around each other in stable orbits. When two such stars have a relatively close orbit, their gravitational interaction can have a significant impact on their evolution. Stars can form part of a much larger gravitationally bound structure, such as a star cluster or a galaxy.