The Sharpless catalog is a list of 313 H II regions (emission nebulae) intended to be comprehensive north of declination −27°. (It does include some nebulae south of that declination as well.) The first edition was published in 1953 with 142 objects (Sh1), and the second and final version was published by US astronomer Stewart Sharpless in 1959 with 312 objects. Sharpless also includes some planetary nebulae and supernova remnants, in addition to H II regions.[1]
Sharpless coordinates are based on the star catalogs Bonner Durchmusterung (BD) and Cordoba Durchmusterung (CD), but the second release was adjusted to the 1900 epoch.[1]
In the second release, some coordinates for southern hemisphere regions have an uncertainty over 1 minute of arc.[1] This can make them difficult to find, so a revised catalog called BFS (Blitz, Fich and Stark) was released[1] with 65 new regions and about 20 removals.[1] Most of the removed items were the aforementioned nebula or remnants.[1]
The 312 items in Sharpless sometimes overlap with the 110 Messier objects (M), 7,840 objects in the New General Catalogue (NGC), the Caldwell catalogue (itself a "best of" from other catalogues, with 109 items), and the RCW catalog. Contemporary catalogs were Gum and RCW, but they mainly covered the southern hemisphere.
Examples of second Sharpless (1958 version) catalog; click on image for image credit, most of which are either various amateur astronomers, the ESO, ESA, or NASA
sharpless, catalog, list, regions, emission, nebulae, intended, comprehensive, north, declination, does, include, some, nebulae, south, that, declination, well, first, edition, published, 1953, with, objects, second, final, version, published, astronomer, stew. The Sharpless catalog is a list of 313 H II regions emission nebulae intended to be comprehensive north of declination 27 It does include some nebulae south of that declination as well The first edition was published in 1953 with 142 objects Sh1 and the second and final version was published by US astronomer Stewart Sharpless in 1959 with 312 objects Sharpless also includes some planetary nebulae and supernova remnants in addition to H II regions 1 Sharpless catalogSh2 106 Related media on Commons edit on Wikidata In 1953 Stewart Sharpless joined the staff of the United States Naval Observatory Flagstaff Station 2 where he surveyed and cataloged H II regions of the Milky Way using the images from the Palomar Sky Survey From this work Sharpless published his catalog of H II regions in two editions the first in 1953 with 142 nebula 3 and the second and final edition in 1959 with 312 nebulae 2 4 Sharpless coordinates are based on the star catalogs Bonner Durchmusterung BD and Cordoba Durchmusterung CD but the second release was adjusted to the 1900 epoch 1 In the second release some coordinates for southern hemisphere regions have an uncertainty over 1 minute of arc 1 This can make them difficult to find so a revised catalog called BFS Blitz Fich and Stark was released 1 with 65 new regions and about 20 removals 1 Most of the removed items were the aforementioned nebula or remnants 1 The 312 items in Sharpless sometimes overlap with the 110 Messier objects M 7 840 objects in the New General Catalogue NGC the Caldwell catalogue itself a best of from other catalogues with 109 items and the RCW catalog Contemporary catalogs were Gum and RCW but they mainly covered the southern hemisphere Contents 1 Examples 2 See also 3 References 4 External linksExamples EditExamples of second Sharpless 1958 version catalog click on image for image credit most of which are either various amateur astronomers the ESO ESA or NASA Sh2 No A common name Images Names and designations6 Bug Nebula nbsp Sh2 6 NGC 6302 Bug Nebula PK 349 01 1 Butterfly Nebula RCW 124 Gum 60 Caldwell 698 NGC 6334 nbsp ESO 392 EN 009 Sharpless 8 RCW 127 Gum 64 NGC 633411 War and Peace Nebula nbsp Sh2 11 NGC 6357 RCW 131 Gum 66 War and Peace Nebula25 Lagoon Nebula nbsp Sh2 25 RCW 146 Gum 72 Messier 829 Sharpless 29 nbsp Sh2 2930 Trifid Nebula nbsp Sh2 30 Messier 20 NGC 6514 RCW 147 Gum 7645 Omega Nebula nbsp Omega Nebula Messier 17 NGC 6618 Swan Nebula Sharpless 45 RCW 160 Gum 8149 Eagle Nebula nbsp Sh2 49 Messier 16 NGC 6611 RCW 165 Gum 8364 W 40 nbsp Sh2 64 RCW 174101 Tulip Nebula nbsp Sharpless 101 Cygnus Star Cloud105 Crescent Nebula nbsp Sh2 105 NGC 6888 Sharpless 105 Caldwell 27106 Celestial Snow Angel nbsp Sh2 106 Celestial Snow Angel117 North America Nebula nbsp NGC 7000 Caldwell 20125 Cocoon Nebula nbsp IC 5146 Caldwell 19140 Sh2 140 nbsp nbsp Sh2 140155 Cave Nebula nbsp Sh2 155 Caldwell 9158 NGC 7538 nbsp Sh2 158 NGC 7538162 Bubble Nebula nbsp Sh2 162 NGC 7635 Bubble nebula171 NGC 7822 nbsp Sh2 171 NGC 7822184 NGC 281 nbsp NGC 281 IC 11191 Maffei 1 nbsp Sh2 191 Maffei 1 PGC 9892197 Maffei 2 nbsp Sh2 197 Maffei 2 UGCA 39 5 PGC 10217 5 199 Soul Nebula nbsp Sh2 199 LBN 667 Soul Nebula IC 1848 cluster only 211 212 Tribble Nebulae nbsp NGC 1624 Sh2 211 Sh2 212220 California Nebula nbsp NGC 1499 Sharpless 220229 Flaming Star Nebula nbsp Flaming Star Nebula Caldwell 31 IC 405 Sh2 229237 NGC 1931 nbsp Sharpless 237238 Hind s Nebula nbsp NGC 1555 Hind s Nebula Sharpless 238244 Crab Nebula nbsp Messier 1 NGC 1952 248 Jellyfish Nebula nbsp IC 443 Sh2 248 Jellyfish Nebula275 Rosette Nebula nbsp Sh2 275 CTB 21279 Running Man Nebula nbsp NGC 1973 NGC 1975 NGC 1977276 Barnard s Loop nbsp Sh2 276 Barnard s Loop277 Flame Nebula nbsp Sh2 271 NGC 2024281 Orion Nebula nbsp Messier 42 NGC 1976 LBN 974297 Sh2 297 nbsp Ced 90 LBN 1039298 Thor s Helmet nbsp Thor s Helmet Gum 4 Sharpless 298 NGC 2359This section needs expansion You can help by adding to it August 2009 See also EditGum Catalog RCW Catalog List of Star Forming Regions in the Local GroupReferences Edit a b c d e f Galaxy Map The Gum RCW Sharpless and BFS catalogs a b Steven Dick 2002 Sky and Ocean Joined The U S Naval Observatory 1830 2000 Cambridge University Press ISBN 978 0 521 81599 4 Stewart Sharpless A Catalogue of Emission Nebulae Near the Galactic Plane Astrophysical Journal vol 118 p 362 1953 Stewart Sharpless A Catalogue of H II Regions Astrophysical Journal Supplement vol 4 p 257 1959 a b NASA IPAC Extragalactic Database Results for Maffei 2 Retrieved 2006 11 25 External links EditOriginal catalog Illustrated and annotated commentary SIMBAD Sh2 listing Sh2 images Portals nbsp Astronomy nbsp Stars nbsp Spaceflight nbsp Outer space nbsp Solar System Retrieved from https en wikipedia org w index php title Sharpless catalog amp oldid 1110871109, wikipedia, wiki, book, books, library,
