Chapter 11 - USD Home Pages
... 10,000 times as luminous as our sun will have a mass of about 10 M . Chap 12 will show that explains its short life of only 10 million years. b. A star with a mass of 10−1 M will have a luminosity of about 10−3 L . That’s why its life will be 1000 billion years. 44. What if? The Sun were a B-type ...
... 10,000 times as luminous as our sun will have a mass of about 10 M . Chap 12 will show that explains its short life of only 10 million years. b. A star with a mass of 10−1 M will have a luminosity of about 10−3 L . That’s why its life will be 1000 billion years. 44. What if? The Sun were a B-type ...
Universe CBA Review - cms16-17
... 24.) What is the name of the above diagram that shows the brightness and temperature of the stars? 25) On the above diagram label each type of star (Blue, Main Sequence, Red Giant, White Dwarf) 26) Label the five stars’ temperature (hot, cold, or average) and magnitude (bright, dim, or average). ...
... 24.) What is the name of the above diagram that shows the brightness and temperature of the stars? 25) On the above diagram label each type of star (Blue, Main Sequence, Red Giant, White Dwarf) 26) Label the five stars’ temperature (hot, cold, or average) and magnitude (bright, dim, or average). ...
Hertzsprung-Russell Diagram Astronomy Project Purpose: To
... Requirements: For each star that is chosen, the following must be completed along with it. Example: if you work in groups of 3, then you will have three sets of data for each of the stars you chose. 1.) Determine the stars temperature in Celsius and Kelvin 2.) With the provided formula, determine th ...
... Requirements: For each star that is chosen, the following must be completed along with it. Example: if you work in groups of 3, then you will have three sets of data for each of the stars you chose. 1.) Determine the stars temperature in Celsius and Kelvin 2.) With the provided formula, determine th ...
18.1 NOTES How are stars formed? Objective: Describe how stars
... A star is a big ball of gases that gives off heat and light. The Sun is only one of billions of stars that make up are galaxy, and there are billions of galaxies. Most stars appear to be white in color. However, there are blue, white, yellow, orange, and red stars. The color of a star determines how ...
... A star is a big ball of gases that gives off heat and light. The Sun is only one of billions of stars that make up are galaxy, and there are billions of galaxies. Most stars appear to be white in color. However, there are blue, white, yellow, orange, and red stars. The color of a star determines how ...
REVIEW: STAR`S TEST
... What factor determines a star’s color ? _______surface temperature______________________________ The apparent magnitude of a star tells you how bright the star is as viewed from A nebula is a huge cloud of gas, primarily composed of hydrogen A nebula becomes a star when _______fusion takes place____ ...
... What factor determines a star’s color ? _______surface temperature______________________________ The apparent magnitude of a star tells you how bright the star is as viewed from A nebula is a huge cloud of gas, primarily composed of hydrogen A nebula becomes a star when _______fusion takes place____ ...
PH142 - Mohawk Valley Community College
... At the conclusion of the course, the students will be able to: 1. Describe the physical nature of the Sun. 2. Describe the physical processes on the Sun. 3. Explain the sequence of events during a solar eclipse--partial, annular, total. 4. Demonstrate an understanding of the methods of distance meas ...
... At the conclusion of the course, the students will be able to: 1. Describe the physical nature of the Sun. 2. Describe the physical processes on the Sun. 3. Explain the sequence of events during a solar eclipse--partial, annular, total. 4. Demonstrate an understanding of the methods of distance meas ...
24-2 Characteristics of Stars
... Measuring Distances to Stars • Use parallax to measure distances from earth to stars – Parallax – apparent change in position of an object when you look at it from different places – Look at star when earth is on one side of the sun and look at same when earth is on other side of the sun – Measure ...
... Measuring Distances to Stars • Use parallax to measure distances from earth to stars – Parallax – apparent change in position of an object when you look at it from different places – Look at star when earth is on one side of the sun and look at same when earth is on other side of the sun – Measure ...
Quiz #4 – The Electromagnetic Spectrum and Stars
... The process that occurs when atoms combine to form a new element and release energy is called _________________. ...
... The process that occurs when atoms combine to form a new element and release energy is called _________________. ...
Starlight and What it Tells Us
... Why Black-Body Radiation is so Important • Color is directly related to temperature • Temperature is the only determinant of color • Energy per unit area is the same if temperature is the same – If two stars have the same color and distance, difference in brightness is due to difference in size – ...
... Why Black-Body Radiation is so Important • Color is directly related to temperature • Temperature is the only determinant of color • Energy per unit area is the same if temperature is the same – If two stars have the same color and distance, difference in brightness is due to difference in size – ...
Slide 1
... • AGB stars are left with the stellar core surrounded by a relatively thin sphere of hot gas which looks like planetary disk, and called Planetary Nebulae (PNe) (nothing to do with planets per se) • PNe cores continue to cool and become White Dwarfs (94% stars end up as WDs) ...
... • AGB stars are left with the stellar core surrounded by a relatively thin sphere of hot gas which looks like planetary disk, and called Planetary Nebulae (PNe) (nothing to do with planets per se) • PNe cores continue to cool and become White Dwarfs (94% stars end up as WDs) ...
How Do Astronomers Measure the Brightness of a Star?
... would have if it were placed at 10 parsec (or 32 light-years) from Earth; Shows the star’s inherent (or true) brightness ...
... would have if it were placed at 10 parsec (or 32 light-years) from Earth; Shows the star’s inherent (or true) brightness ...
Worksheet: Stars and the HR Diagram
... Name _______________________________________ Date ______________ Period _______ ...
... Name _______________________________________ Date ______________ Period _______ ...
KMS Universe Test Study Guide
... 8) What determines whether a star ultimately becomes a black hole or a neutron star? The mass of a star determines what happens at the end of it’s life cycle. Very large stars become neutron stars, or Black Holes. 9) What determines whether a star will ultimately explode as a supernova? It’s Mass. L ...
... 8) What determines whether a star ultimately becomes a black hole or a neutron star? The mass of a star determines what happens at the end of it’s life cycle. Very large stars become neutron stars, or Black Holes. 9) What determines whether a star will ultimately explode as a supernova? It’s Mass. L ...
Chapter 13
... The End of a Star’s Life When all the nuclear fuel in a star is used up, gravity will win over pressure and the star will die. ...
... The End of a Star’s Life When all the nuclear fuel in a star is used up, gravity will win over pressure and the star will die. ...
Stars - Denbigh Baptist Christian School
... Sizes and Distances of Stars Dwarfs – small and medium Our Sun has diameter of 865,000 miles (1,400,000 km) This size makes it a medium-sized yellow star. Giant stars – 10’s – 100’s of times larger and 100’s times more luminous. Supergiants – 100’s times larger and 1000’s times more luminous. Next c ...
... Sizes and Distances of Stars Dwarfs – small and medium Our Sun has diameter of 865,000 miles (1,400,000 km) This size makes it a medium-sized yellow star. Giant stars – 10’s – 100’s of times larger and 100’s times more luminous. Supergiants – 100’s times larger and 1000’s times more luminous. Next c ...
The “Big Bang” Theory
... • Our solar system, including the Earth, formed about 4.6 billion years ago. • That is about 10 billion years after the “Big Bang”. • Hominids (early ancestors of man) have only been around for about 3.6 million years and Homo sapiens for only about 200,000 years. ...
... • Our solar system, including the Earth, formed about 4.6 billion years ago. • That is about 10 billion years after the “Big Bang”. • Hominids (early ancestors of man) have only been around for about 3.6 million years and Homo sapiens for only about 200,000 years. ...
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.