Sh2-54

Sh2-54
Emission nebula
	H II region
	File:The star cluster NGC 6604 and its surroundings.jpg Sh2-54 nebula surrounding the star cluster NGC 6604; Credit: ESO
Observation data: J2000 epoch
Right ascension	18h 17m 53s
Declination	−11° 40′ 58″
Distance	6,200 ly
Apparent dimensions (V)	140 arcmins
Constellation	Serpens
Designations	RCW 167, Gum 84/85, W35, LBN 72
	See also: Lists of nebulae

Sh2-54 is an extended bright nebula in the constellation of Serpens.^[1]

In its core there are many protostars and many infrared sources; some of these sources, like IRAS 18151−1208, are most probably very young high-mass stars.^[4] The older star population in this region has an average age of 4-5 millions years, and its components are grouped in the open cluster NGC 6604.^[2]

Sh2-54 belongs to an extended nebulosity that includes also the Eagle Nebula and the Omega Nebula.^[5] The young high-mass stars of this region constitute the Serpens OB1 and Serpens OB2 OB association.^[2]

References

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External links

Coordinates: 18^h 17^m 53^s, −11° 40′ 58″

This nebula-related article is a stub. You can help Wikipedia by expanding it.

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v t e Gum Catalog
Colin Stanley Gum
Gum 1 Gum 2 Gum 3 Gum 4 Gum 5 Gum 6 Gum 7 Gum 8 Gum 9 Gum 10 Gum 12 Gum 13 Gum 14 Gum 15 Gum 16 Gum 17 Gum 18 Gum 19 Gum 20 Gum 21 Gum 22 Gum 23 Gum 24 Gum 25 Gum 26 Gum 27 Gum 28 Gum 29 Gum 30 Gum 31 Gum 32 Gum 33 Gum 34 Gum 35 Gum 36 Gum 37 Gum 38 Gum 39 Gum 40 Gum 41 Gum 42 Gum 43 Gum 44 Gum 45 Gum 46 Gum 47 Gum 48 Gum 49 Gum 50 Gum 51 Gum 52 Gum 53 Gum 54 Gum 55 Gum 56 Gum 57 Gum 58 Gum 59 Gum 60 Gum 61 Gum 62 Gum 63 Gum 64 Gum 65 Gum 66 Gum 67 Gum 68 Gum 69 Gum 70 Gum 71 Gum 72 Gum 73 Gum 74 Gum 75 Gum 76 Gum 77 Gum 78 Gum 79 Gum 80 Gum 81 Gum 82 Gum 83 Gum 84 Gum 85
See also: Gum Nebula

Sh2-54

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