Gum catalog
Introduction The '''Gum catalog''' is an astronomical catalog of 84 emission nebulae in the southern sky. It was made by the Australian astronomer  Colin Stanley Gum (1924-1960) at Mount Stromlo Observatory using wide field photography. Gum published his findings in 1955 in a study entitled ''A study of diffuse southern H-alpha nebulae'' which presented a catalog of 84 nebulae or nebular complexes. Similar catalogs include the Sharpless catalog and the RCW catalog, and many of the Gum objects are repeated in these other catalogs. However, the RCW and Gum catalogs were mainly of the southern hemisphere (Mount Stromlo is in the southern hemisphere)The Gum Nebula is named for Gum, who discovered it as Gum 12; it is an emission nebula that can be found in the southern constellations Vela and Puppis.
Examples  Gum  A common name  Images  Names & DesignationsGum 4  NGC 2359  99px Thor's Helmet, Gum 4, Sharpless 298, NGC 2359Gum 12  Gum Nebula       Gum 12, The Gum Nebula in Vela and PuppisGum 15  RCW 32     99px  Gum 15, Star Formation RegionGum 16  Vela Supernova Remnant       Gum 16, Vela Supernova RemnantGum 20  RCW 36     99px  RCW 36Gum 29  RCW 49     99px  Gum 29, RCW 49Gum 60  NGC 6302  90px  Sh2-6, NGC 6302, Bug Nebula,PK 349+01 1, Butterfly Nebula, RCW 124, Caldwell 69Gum 64   NGC 6334   99px  ESO 392-EN 009, Sharpless 8, RCW 127, Gum 64, NGC 6334Gum 66  NGC 6357  99px  Sh2-11, NGC 6357, RCW 131, Gum 66, War and Peace NebulaGum 72  Lagoon Nebula  99px  Sh2 25, RCW 146, Gum 72, Messier 8Gum 76  Trifid Nebula 99px  Sh2 30, Messier 20, NGC 6514, RCW 147, Gum 76 Gum 81  Omega Nebula  99px  Omega Nebula, Messier 17, NGC 6618, Swan Nebula, Sharpless 45, RCW 160, Gum 81Gum 83  Eagle Nebula  99px    Sh2 49, Messier 16, NGC 6611, RCW 165, Gum 83
List *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 70a, Gum 70b, HD 100546 Nebulae*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 * RCW Catalogue
References ===Sources===* Gum Nebula* SouthernSkyPhoto.com* Anglo-Australian Observatory* Physics Today, 2001* The Cloud Hunters* Illustrated Gum Catalog
External links * Illustrated and annotated commentary of Gum objects