Yufu NGC Galaxy Group

Discoverer: John Friedrich Wilhelm Herschel.

Date of discovery:1September 27th, 834

Other numbers: ESO 4 1 1-32, MCG-5-3- 15, IRAS 00544-32 14.

Era: J2000.0

Right ascension: 56 minutes and 52.4 seconds

Declination:-3157' 47

Constellation: Emerald

Star type: galaxy

Magnitude: 13.3

Surface brightness: 12.8

Lan et al.: discovered 14.2.

Discovery date:1837165438+1October 29th.

Other numbers: IC 1709, ESO 353-3, MCG-6-4-37.

Era: J2000.0

Right ascension: 1: 27: 56.9.

Declination:-35 43' 3

Constellation: Emerald

Star type: galaxy

Magnitude: 12.6

Surface brightness: 13.8

Lan et al.: discovered 13.6.

Date of discovery:128 September 834.

Other numbers: ESO 4 12-5, MCG-5-3-24, AM 0 103-302.

Era: J2000.0

Right ascension: 1: 06: 12 seconds

Declination: -30 10' 4 1

Constellation: Emerald

Star type: galaxy

Magnitude: 13.438+0

Surface brightness: 13.5

Lan et al.: 13.8 This beautiful image is the spiral galaxy NGC253, which was shot by a camera with more than 6.7 million pixels. This camera is called "wide-angle camera". It is the latest instrument of the 2.2m telescope of the European Southern Sky Observatory in Chile. The photo was taken in199865438+February, aiming at highlighting the whole galaxy, making the curved cantilever clearer and showing an unusually large number of dust belts in the galaxy. Brighter foreground stars will cause vertical bright marks on the image, and another high-resolution image can show blurred background galaxies and globular clusters belonging to NGC253. In addition, you can see two fuzzy satellite galaxies. NGC253 belongs to the spiral galaxy of Sc type, which is about 800 to100000 light years away from us, and is located in the southern constellation Jade. The galaxy NGC253 is almost facing us. It is a normal spiral galaxy. This is the closest galaxy cluster to us. NGC253 in the image is one of the brightest spiral galaxies in the visible sky. With good quality binoculars, you can see it in the starry sky in the southern sky. Astronomers believe that NGC253 is a starburst galaxy because of its high star formation rate and dense dust clouds at the core of the galaxy. The active core of NGC253 emits X-ray and gamma-ray radiation.

NGC6 13

The rod-like spiral galaxy NGC6 13 is located in the southern constellation Ophiuchus, only 65 million light years away from us. NGC6 13, which is more than100000 light years in size, has a very obvious central rod, and a prominent spiral arm extends from the end of the rod, which is inlaid with many cosmic dust clouds and bright star-forming regions. From this galaxy ...

Radio radiation from this galaxy shows that there may be a huge black hole hidden in the center of NGC6 13.