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IC 2948 (Bat Nebula)


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IC 2948
Bat Nebula (コウモリ星雲)
Emission Nebula (散光星雲)
Nb EN

別名 (Other names)
Running Chicken Nebula, IC 2944, NGC 3766

距離 (Distance)
6,000光年 (6,000 light-years)

星座 (Constellation)
ケンタウルス座 (Cen) (Centaurus)

Bat Nebula (IC 2948) is an emission nebula located 6,000 light years from the Earth in the constellation Centaurus.

IC 2948 (Bat Nebula) : Picture

IC 2948: The Running Chicken Nebula
IC 2948: The Running Chicken Nebula
(C) Steve Crouch
Bright nebulae abound in and around the expansive southern constellation of Centaurus. This one, cataloged as IC 2948/2944 is near the star Lambda Centauri (just off the top of the frame) and not far on the sky from the better known Eta Carinae Nebula. Embedded in the reddish glowing cloud of hydrogen gas, typical of emission nebulae found in massive star-forming regions, is the energetic young star cluster Collinder 249. Seen in silhouette near the top of the view are small, dark clouds of obscuring cosmic dust. Called Thackeray's Globules for their discoverer, they are potential sites for the formation of new stars, but are likely being eroded by the intense radiation from the nearby young stars. Of course, gazing at the center of the region suggests to some IC 2948's popular name - The Running Chicken Nebula. The gorgeous skyscape spans about 70 light-years at the nebula's estimated 6,000 light-year distance.

Chasing Carina
Chasing Carina
(C) Dieter Willasch
A jewel of the southern sky, the Great Carina Nebula, aka NGC 3372, spans over 300 light-years. Near the upper right of this expansive skyscape, it is much larger than the more northerly Orion Nebula. In fact, the Carina Nebula is one of our galaxy's largest star-forming regions and home to young, extremely massive stars, including the still enigmatic variable Eta Carinae, a star with well over 100 times the mass of the Sun. Nebulae near the center of the 10 degree wide field include NGC 3576 and NGC 3603. Near center at the top of the frame is open star cluster NGC 3532, the Wishing Well Cluster. More compact, NGC 3766, the Pearl Cluster, can be spotted at the left. Anchoring the lower left of the cosmic canvas is another large star-forming region, IC 2948/2944 with embedded star cluster Collinder 249. That region is popularly known as the Running Chicken Nebula.

IC2944
The Very Large Telescope Snaps a Stellar Nursery and Celebrates Fifteen Years of Operations
(C) ESO
This intriguing new view of a spectacular stellar nursery IC 2944 is being released to celebrate a milestone: 15 years of ESO’s Very Large Telescope. This image also shows a group of thick clouds of dust known as the Thackeray globules silhouetted against the pale pink glowing gas of the nebula. These globules are under fierce bombardment from the ultraviolet radiation from nearby hot young stars. They are both being eroded away and also fragmenting, rather like lumps of butter dropped onto a hot frying pan. It is likely that Thackeray’s globules will be destroyed before they can collapse and form new stars.

The Southern Cross
The Southern Cross
(C) ESO
Shining in the southern sky, the four bright stars portrayed in the left part of this image represent a useful orientation mark which helps identifying the South Celestial Pole. Because of the rather distinctive asterism they form, these stars have been officially classified as the Crux constellation, or the Southern Cross. 

The vast dark cloud, visible in the lower part of the image, is usually referred to as the Coalsack Nebula; it also has a preeminent role in the Australian Aboriginal culture, representing the head of an emu in the traditional constellation of the "Emu in the Sky".

The ruddy object glowing in the upper part of the image owes its colour to the blaze of hydrogen gas. Catalogued as IC 2948, this emission nebula hosts a sparkling cluster of young stars.

Running Chicken Nebula
The Running Chicken Nebula in the constellation of Centaurus
(C) ESO
This chart shows the location of the Running Chicken Nebula (IC2944) in the large southern constellation of Centaurus. This map shows most of the stars visible to the unaided eye under good conditions and the location of the nebula itself is marked with a red circle. Although the star cluster IC 2948, associated with this nebula, is easily seen in a small telescope, the nebula is very faint and was only discovered photographically early in the 20th century.

IC 2948: The Running Chicken Nebula IC 2944
IC 2948: The Running Chicken Nebula
(C) Steve Crouch
IC 2944
(C) ESO
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IC 2948 (Bat Nebula) : Movie

Zooming in on the stellar nursery IC 2944 and Thackeray's Globules
This zoom runs from a very wide view of the Milky Way all the way into a very close-up view of the spectacular stellar nursery IC 2944. It is being released to celebrate a milestone: 15 years of ESO's Very Large Telescope. This image from the VLT also shows a group of thick clouds of dust known as the Thackeray globules, silhouetted against the pale pink glowing gas of the nebula. These globules are under fierce bombardment from the ultraviolet radiation from nearby hot young stars. They are both being eroded away and also fragmenting, rather like lumps of butter dropped onto a hot frying pan. It is likely that Thackeray's globules will be destroyed before they can collapse and form new stars.

A close-up look at the stellar nursery IC 2944 and Thackeray's Globules
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