Astronomical knowledge _ Carina nebula

As we all know, Carina is one of the southern constellations, which lies between flying fish and flies, and between the stern and Vela. Do you know what the carina nebula is? Next, let's use constellation knowledge to see what is Carina Nebula!

The Carina Nebula is also known as Callina Nebula, also known as keyhole Nebula, Carina Nebula, or NGC 3372. It is a huge nebula on the arm of Sagittarius in the Milky Way galaxy, 9000 light years away from us. It is located in the base of the ship and contains several O-stars. Carina Nebula is a huge bright nebula surrounded by η star, which is one of the largest and brightest stars in the Milky Way. Although it is far away from us, the central region of the nebula is still bright enough to be seen by the naked eye (although it is better observed in the equator and the southern hemisphere).

Deep sky object

NGC 3372

There is a big nebula NGC on the base of the ship? 3372 (also known as "Carina Nebula"), whose appearance has been changing for a long time, is home to many massive stars. The most active celestial body in the nebula is "Haishan Erxing", that is, the star η of Carina, which briefly became one of the brightest stars in the whole day in the 1930s of 19, and then immediately dimmed. In NGC? The keyhole nebula can be found in the middle and lower part of 3372. There are several very massive stars in it, which makes its appearance change all the time. NGC 3372 is about 7000 light-years away and about 300 light-years in size.

Henize 3_40 1

It is about 65,438+0,000 light years away and is the narrowest planetary nebula known. For a spherical star, it is strange to produce a nebula of this shape, which some scientists think is strange. Its long and narrow shape may be a clue to solve the mystery of the outer material ejection mechanism in the later stage of the star. After thousands of years, the nebula will dissipate, leaving only a white dwarf.

NGC 25 16

The NGC 25 16 or diamond cluster is an open cluster, which was discovered by Nicola Louis Llakaj in the south carina during the period of 175 1-52. These stars are called diamond clusters because of their high definition. The cluster itself can be seen with the naked eye in the dark night sky, but the effect will be better with binoculars. Diamond cluster contains two beautiful fifth-order red giant stars and three pairs of binary stars, but at least a small telescope is needed to distinguish these binary stars. NGC 25 16 is similar to Mamajek 2 cluster recently discovered near Ophiuchus in age and metal content. Recently, E. Jilinksi and his collaborators presented dynamic evidence that these two star groups were formed by the same star formation process 65.438+0.35 billion years ago.

IC 2602

IC 2602, also known as Pleiades or theta cluster in Carina, is an open cluster located in Carina. It was first discovered by the French astronomer Llakaj in 175 1 year. This cluster is about 479 light years away from the earth and can be seen by the naked eye.