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Where does the sun fit on the Hertzsprung Russell diagram and why?
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According to the hertzsprung Russell diagram what color is are sun?
On the HR diagram the Sun's spectrum is of type G2 which makes it yellow.
What location on the graph best represents a star with average brightness and temperature?
Stars' brightness and temperature are typically represented on a Hertzsprung-Russell (H-R) diagram. An average star like the Sun would be located on the "Main Sequence" portion of the graph, where brightness increases as temperature increases.
Why is the sun called a main sequence star?
The main sequence is a line on a Hertzsprung-Russell diagram, on which every star is placed on a graph of absolute magnitude against surface temperature. Each star produces a dot on the diagram, and all the main sequence stars fall roughly on a straight line. On the main sequence the hot bright stars are on the top left and the cooler dimmer red stars are on the lower right. The Sun is just above halfway up.
How do we know that the Sun is made mostly of hydrogen and helium?
If the star plots on the main sequence of the Hertzsprung-Russell (HR) diagram its main energy source is hydrogen fusion. As it converts to helium fusion the core collapses a bit and the temperature of the core goes up. This causes the star's outer layers to expand and the star's surface appears cooler (more red). At this point it will no longer plot on the main sequence of the HR diagram.
How bright is a star?
That depends and which star you are talking about, for instant, our sun is three hundred dimer then Sirius. Our sun releases 1.4x10 to the power 31 joules every hour, whilst Sirius releases 4.2x10 to the power of 33 every hour.
According to the hertzsprung Russell diagram what color is are sun?
On the HR diagram the Sun's spectrum is of type G2 which makes it yellow.
How would you classify the based on each of these characteristics?
The sun is considered a main sequence star on the Hertzsprung-Russell diagram.
According to the Hertzsprung Russell Diagram what is the luminosity of the Sun?
The Sun is the main basis for many stellar parameters. A far as luminosity goes - it is 1.
Stars that are larger than the sun are called?
Have a crack at the Hertzsprung - Russell diagram of stars. This will give you an idea of where Sol is in the Stellar hierarchy.
Is the star pollux already on the diagram of hertzsprung Russell?
Pollux is an orange giant star located about 34 light years from earth. It would no doubt have been used to help form the Hertzsprung-Russell diagram, showing temperatures of stars vs. luminosity. Its temperature is around 4865 Kelvin and it has a luminosity of 32 times that of our own sun.
Henry Norris Russell and Ejnar Hertzprung?
In the early 20th century, Danish astrophysicist Ejnar Hertzsprung and American astrophysicist Henry Norris Russell independently developed a graph now known as the Hertzsprung-Russell (H-R) diagram, which plots absolute brightness against spectral type. In this diagram, the brightest stars lie near the top of the diagram and the hottest stars lie to the left. On the H-R diagram, most of the stars, including the Sun, fall along a diagonal line that goes from the upper left to the lower right of the diagram. This line called the main sequence.The great majority of stars neighboring the Sun fall on the lower part of the H-R diagram's main sequence, and relatively few lie on the portion of the main sequence above the Sun. This means that most of the Sun's neighboring stars are both cooler and fainter (in absolute magnitude) than the Sun. A smaller population of brighter but cooler stars known as supergiants occupies the uppermost region of the diagram. Some stars, which are difficult to discover because they are so intrinsically faint, lie near the bottom of the H-R diagram. These faint stars are called white dwarfs.
Where is the sun on the Hertzprung-Russell diagram?
Almost perfectly in the center, in the main sequence.
What location on the graph best represents a star with average brightness and temperature?
Stars' brightness and temperature are typically represented on a Hertzsprung-Russell (H-R) diagram. An average star like the Sun would be located on the "Main Sequence" portion of the graph, where brightness increases as temperature increases.
Interpret an H-R diagram?
An H-R Diagram (Hertzsprung and Russell) is used to classify stars based on their size and brightness. The main sequence stars, such as our sun, are the medium stars, and take up the middle f the diagram, while the giants and dwarves are located on either side. http://www.eso.org/public/outreach/eduoff/cas/cas2002/cas-projects/bulgaria_comaber_1/hr_local.gif <- shows what an H-R diagram looks like.
Why is the sun called a main sequence star?
The main sequence is a line on a Hertzsprung-Russell diagram, on which every star is placed on a graph of absolute magnitude against surface temperature. Each star produces a dot on the diagram, and all the main sequence stars fall roughly on a straight line. On the main sequence the hot bright stars are on the top left and the cooler dimmer red stars are on the lower right. The Sun is just above halfway up.
Are main sequence stars hotter or cooler than the sun?
They are both hotter and cooler because the main sequence contains a lot of stars including the Sun. The main sequence is a region on a Hertzsprung-Russell diagram which plots stars on a graph of brightness against surface temperature. Each star is a point on the diagram because it has one value of brightness and one of temperature. All the main-sequence stars lie on or near a line drawn from top left to lower right. The Sun is about halfway along the main sequence.
How do we know that the Sun is made mostly of hydrogen and helium?
If the star plots on the main sequence of the Hertzsprung-Russell (HR) diagram its main energy source is hydrogen fusion. As it converts to helium fusion the core collapses a bit and the temperature of the core goes up. This causes the star's outer layers to expand and the star's surface appears cooler (more red). At this point it will no longer plot on the main sequence of the HR diagram.
