What are the two most important intrinsic properties used to classify stars?

Answer 1

Dead stars are usually cold balls of material in empty space. A teaspoonful of white dwarf matter would weigh as much as an Elephant on Earth, as white dwarfs are actually the compressed remains of a star like our sun, shrunk down to the size of Manhattan. More massive stars that die compress into neutron stars, even denser, which actually bends the light that travels around it. A teaspoonful of that would weigh about as much as a small mountain. Then for stars with masses above 1.44 times that of the Sun in their prime, shrink down to black holes. Theoretically no volume and with huge masses, translating into infinite density and possible infinite gravitational force. The event horizon is NOT part of a black hole, rather, it's simply an imaginary sphere around the Singularity that guarantees death if breached. Don't try to meet one. You probably would die millions of times more often than travel into another universe.

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Answer 2

The two most important intrinsic properties used to classify stars are their luminosity (brightness) and their surface temperature (spectral type). The luminosity is a measure of how much energy a star emits, while the surface temperature is indicative of the star's color and the type of radiation it emits.

Answer 3

There are many characteristics.

• Size: Anything from 0.08 --> 2,100 solar radii.
• Mass: Anything from 0.075 --> 265 solar masses.
• Temperature: 3,000K --> 33,000K (The Sun is 5,778k)
• Luminosity: 0L --> 1,000,000L (Where L=Luminosity of the Sun)
• Speed of Rotation: 0 --> 720,000 mph (The Sun rotates at 4,467 mph)
• Age: 0 --> 13.7 billion years old.

Answer 4

A galaxy is a collection of stars, bound together by gravity, separate from other galaxies or collections of stars. Galaxies are all different, but can have different general appearances which lets us categorize them.

For example, our own galaxy is the "Milky Way". Since we're within the Milky Way, we can't actually see what it looks like, but our analysis indicates that ours is a spiral, or "barred spiral" galaxy. It probably is fairly similar in appearance to the Andromeda Galaxy, M31.

Other galaxy types are "elliptical" and "irregular", and there are variations within each of these.

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Interestingly, the "M31" name was assigned by Charles Messier, a French astronomer. Messier was primarily fixated on comets, but kept finding fuzzy things in the sky that weren't comets. So he compiled a list of "fuzzy things in the sky that aren't comets". The Andromeda Galaxy was #31 on his list.

Answer 5

Two types of star clusters can be distinguished: globular clusters are tight groups of hundreds of thousands of very old stars which are gravitationally bound, while open clusters, a more loosely clustered group of stars, generally contain less than a few hundred members, and are often very young.

Answer 6

The only common characteristic of a dwarf star is that it is small. There are different kinds of dwarf stars, which in other respects have different characteristics; you should read about each kind separately: white dwarf; red dwarf; black dwarf; red dwarf.

The only common characteristic of a dwarf star is that it is small. There are different kinds of dwarf stars, which in other respects have different characteristics; you should read about each kind separately: white dwarf; red dwarf; black dwarf; red dwarf.

The only common characteristic of a dwarf star is that it is small. There are different kinds of dwarf stars, which in other respects have different characteristics; you should read about each kind separately: white dwarf; red dwarf; black dwarf; red dwarf.

The only common characteristic of a dwarf star is that it is small. There are different kinds of dwarf stars, which in other respects have different characteristics; you should read about each kind separately: white dwarf; red dwarf; black dwarf; red dwarf.

Answer 7

They are classified by distance, brightness (magnitude) or spectrum. There are five main types of star spectrums, called A, F, G, K, M. White A type stars are the hottest (e.g. Sirius, Rigel) while red M type ones are the least hot (Betelgeuse).

Answer 8

ALL stars start off with hydrogen fussing into helium. After that depending on the mass they go through several stages of life converting ever heavier elements until you get to iron. At this point the energy required to fuse iron to a heavier element takes more energy than it produces and can end in spectacular results anything from a Supernova to a Black hole.

For a more detailed list of the elements and the life cycle of a star look at the related source link below.

Answer 9

The only common characteristic of a dwarf star is that it is small. There are different kinds of dwarf stars, which in other respects have different characteristics; you should read about each kind separately: white dwarf; red dwarf; black dwarf; red dwarf.

Answer 10

I believe scientists use (thermal imaging) color as an example to classify stars.

As well as the Star's light spectrograph, its X-ray, UV and IR images are Equally Revealing.