Cloudy Night Observing 5: Galaxy Types Name: Johanna Lawrence Purpose




Дата канвертавання24.04.2016
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Cloudy Night Observing 5: Galaxy Types

Name: _Johanna Lawrence_


Purpose:

Better understand the differences between types of galaxies.


Procedure:

Using your textbook and/or the internet, list two examples (names of galaxies) of each galaxy type below, and describe a little bit about them. Include pictures of each galaxy. The pictures can be scaled down to a smaller size and can be printed in black and white. This project can be done on a separate sheet of paper. A good website to use is NASAs astronomy picture of the day page. Use their search feature to look up these objects.




Spiral galaxies:

NGC 2841 – The spiral galaxy is 46 million light years away. The NGC 2841 is found in the northern constellation of Ursa Major. This spiral galaxy has many blue stars, which are considered very hot stars.


Messier 81- This spiral galaxy is 11.8 light years away. It was discovered in 1774. It is in the northern hemisphere in the Ursa Major constellation. Messier 81 is the largest galaxy in the group of the Messier 81. There are 34 galaxies located in the Ursa Major constellation. There is one supernova on M81. This galaxy is close enough that it can be seen with binoculars or a telescope.


Elliptical galaxies:
M60 (NGC 4649) - This elliptical galaxy is about 54 million light-years away and 120,000 light-years across. It is a part of the Virgo Cluster. The M60 contains an ultra-compact dwarf galaxy within it.



NGC 1316- This galaxy started about 100 million years ago. It’s built up by several galaxies that have merged together. It’s considered a radio galaxy. NGC 1316 is located at the edge of the Fornax Cluster.


Irregular galaxies:
NGC 147A - This Irregular galaxy is 62 million light-years away and over 20,000 light-years long. It is located in the Eridanus constellation. It is the brightest dwarf of the Fornax cluster.



NGC 4449- Is 12.5 million light-years away. It consists of many star clusters. There’s different colors of stars within this galaxy, that means different temperatures of stars. This galaxy is surrounded by a large area of neutral hydrogen. Many galaxies have been discovered within the NGC 4449 galaxy.


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