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A star is a luminous sphere of plasma held together by its own gravity. The nearest star to Earth ... However, most of the stars in the Universe, including all stars outside our ... age, metallicity...

Star - Mass: The Fundamental Stellar Property - Stars, Massive ...


Mass is the most important stellar property. This is because a star's life is a continuous fight against gravity, and gravity is directly related to mass. The more  ...

Final Test: 3 Flashcards


Mar 13, 2013 ... Which of these stars will end its main sequence lifetime most rapidly? .... What is the most important property of a star that determines how it will ...

Properties of Stars - Astronomy Notes


Jun 7, 2010 ... In order to get a better idea of what stars are like, put them into groups of some sort. ... You will see how that important question can be answered. ... If the temperature is too high, most of the hydrogen atoms will have their ...

How do we determine the life cycles of stars and tag some as "young"


Oct 17, 1997 ... This is one of the most important, and interesting, problems in astronomy. ... That means stars can have only certain combinations of these two properties. ... Giants and White Dwarfs are what stars become as they grow older.

Stellar Properties


The most direct method to measure the distance to nearby stars is through the ... Apparent magnitude is what we measure in the sky, absolute magnitude is the ...

Stellar Masses - Caltech Astronomy


1. Stellar Masses. The mass of a star is arguably its most important property. In this article ... How do the properties of stars ... What distribution of stellar masses.

ASTRO-10 Lecture 20


What Fundamental Properties of a Star Determine its Position in the H-R Diagram ? ... A star burns hydrogen into helium in its core during most of its life and ... The important thing to note here is that as the proto-star evolves it contracts and gets ...

Chapter 16--Properties of Stars


How are stars classified into spectral types? • What determines a star's spectral type? 16.4 Stellar Masses. • What is the most important property of a star?

Star Formation and Main Sequence


What happens during the Main Sequence phase of a stars life? ... star (you'll have to keep reading to find out which one is the most important; you think I'd ..... Some of these properties make MS stars distinct from others and help us understand ...

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16. Properties of Stars


stars (such as Mass) rather than seeing stars at ... What two basic physical properties do astronomers use to ... What is the most important property of a star?

Basic Properties of Stars How do we measure star's mass? Types of ...


We can directly observe the orbital motions of these stars. ... Why is a star's mass its most important property? • What is a Hertzsprung–Russell diagram? How do ...

The Properties of Stars


We can determine an amazing number of physical properties of stars, usually based only on a little bit of light. ... This is not a fundamental property, but a combination of the luminosity and distance to a ... What are the stellar Constellations?