Pm3110 Lab 9

It is easy to flip to the index of an astronomy textbook to discover that, say, the Sun lies 150 million kilometers away from Earth.  It is far more difficult (if not impossible), however, to picture this distance in the human mind.  In this exercise, we will learn to access the often unpalatable distances encountered in astronomy by simply scaling the huge distances to more recognizable, pedestrian numbers.  So long as every distance within the system of interest is scaled by the same factor, we retain the meaningful information about relative distances between objects.

There are various methods of determining the distances of stars. Some of them include the variable stars theory, parallax method, use of color and the expanding universe theory, just to mention a few. The method that is the most common and can easily be explained is parallax, which is well explained through illustration. When one holds an object high up front so that it blocks your front view and close one eye in different turns, the item appears to move in relation to the item in front. When both eyes are open one may get an idea of how far the object may be and the distance is obtained by the length of direction change, and this theory is known as parallax.

The Sun is one astronomical unit away so in actuality, it’s 0.00001581 light years away. Sirius looks smaller than the sun because it’s almost 9 light years away, which means it’s 92,919,000 or the astronomical units away. Sirius has a dwarf or twin star next to it, this star is called Sirius B. Sirius B was assumed to exist in 1844 but it wasn’t actually discovered until almost 18 years later!

It also has the ability to collect sufficient light from the dim and distant stars. After information was captured, it was then reviewed on a computer. The focus was placed on the black vertical lines known as absorption lines which corresponded with different chemical elements in the outer shell of the star. The information that has been collected and analyzed over the past years shows both halo stars and dim dwarf galaxy stars have weak absorption lines. When the photon energy is close to the energy difference between the lower and higher states, the process is called resonance, this produces high absorption. When the opposite is true, the absorption is small (Frebel,

The colors red and yellow would represent the fiery colors of the early sun. The texture of the ketchup and mustard would represent the liquidly molten surface. The element of heat would represent how hot Earth’s surface was.

My purpose is to figure out if the sun’s gravity bends light. By doing so, I will take two total solar eclipses and use the distance from where the star is and where it appears to be. I will look at two stars and find the difference of where they are observed and where they are located.

In the constellation Centaurus, there is a star system named Alpha Centauri in which there are three stars. Both A and B are approximately the same size as our sun

A white subgiant, it is the 97th brightest star in our sky and a member of a multiple-star system. (5) It is about 15 times as luminous as the Sun. (9)

I can tell many things about the star B-Centauri by looking at this H-R diagram. First of all I can see that it has a temperature of almost 30,000 K, that means it is almost five times hotter than our sun. Next, B-Centauri's luminosity is 10, 000 Lu which means it produces ten thousand times the energy of our sun. I know that B-Centauri is a spectral type O by reading the H-R diagram. During the Vlab we found that Naos was a spectral type O. All stars that are spectral type O are blue, meaning they are the hottest type of stars. Stars of the same spectral type have the same composition. Since Naos has hydrogen, helium, and helium ions so does B-Centauri. The mass of B-Centauri is twenty times the mass of our sun. The radius of B-Centauri

Primary Calibrators were set up to bounce radar waves throughout the solar system to help determine distances between objects and Earth. Secondary Calibrators were designed to determine brightness of stars from Earth. The method of brightness

For Canis Major, Sirius is the brightest star in the sky and the fifth nearest star to the Sun.Sirius is a binary star. It is only about 8.6 light

There are brighter stars as far as genuine vitality and light yield, yet they are more distant away and consequently dimmer. Regularly, the main questions that surpass Sirius in our sky are the sun, moon, Venus, Jupiter, Mars, and Mercury (and as a rule, Sirius eclipses the last two!). At 8.6 light-years distance, Sirius is one of the closest stars to us after the sun. (A light year is about 6 trillion miles!) In truth, it is the closest star effortlessly noticeable to the unaided eye from the vast majority of the northern half of the globe. Space experts as an "A" type star, it is considerably much hotter than our sun, with about surface around 17,000 degrees F (the sun is around 10,000 degrees F). With somewhat more than double the mass of

There is a relationship between what the stars look like and it’s temperature. In the experiment, we observed the temperature, color, and brightness of the light bulb. The color changed and grew brighter when the temperature expanded to a higher rate. The brightness started from a dull red, to an orange, yellow, and ended at a very bright white. The temperature started at 24 degrees and expanded to 40, 60, 80, and grew higher than 110 degrees Celsius. When the colors are darker, a decrease in the temperature; the brighter the colors, an increase in the temperature. A possible error made during the experiment was the thermometer could’ve been moving when put on the beaker and could be farther away from the light bulb then another time in the

In light there are different waves and particles. Light is made up of electric and magnetic fields. Due to this fact, light is an example of electromagnetic radiation, it is the changing of these fields to travel through space shifting energy maneuvering from one area to another. Since light is an electromagnetic wave, each one has a certain wavelength. Telescopes help us to view the visible light of the electromagnetic spectrum. Most of the electromagnetic spectrum, such as infrared, x-rays, ultraviolet, and gamma rays, don’t reach earth’s surface to be examined. A telescope in space, above the atmosphere, however, is said to be diffraction limited. Since the speed of light is constant a wavelength of radiation of a star can be seen as its frequency. Frequency is recorded based on a certain number of waves emitted within a brief second.

So by definition a star is a globe of gas that produces its heat and light by nuclear fusion. They are born from a nebulae and are made up of mostly hydrogen and helium gas. Surface temperature on a star can range from 2000°C all the way up to 30,000°C (“Life of a Star.”). The colors of a star can range from blue to red depending on the brightness of the star. The brighter star is the higher the