Mesh map of the inner Gould Belt created from Gaia observatory data
It was long speculated that the belt was a physical structure in the galactic disk, but data from the Gaia survey indicate that several of its star-forming regions belong instead to the separate Radcliffe wave and Split linear structures in the Orion Arm, and that the circular appearance of the belt results mostly from the projection of these structures onto the celestial sphere.[2]
A theory proposed around 2009 suggests that the Gould Belt formed about 30 million years ago when a blob of dark matter collided with the molecular cloud in our region. There is also evidence for similar Gould belts in other galaxies.[6][7]
See alsoedit
Local Bubble – Cavity in the interstellar medium which contains the Local Interstellar Cloud
^Kirk, J. M.; et al. (21 June 2013). "First results from the Herschel Gould Belt Survey in Taurus". Monthly Notices of the Royal Astronomical Society. 432 (2): 1424–1433. arXiv:1304.4098. doi:10.1093/mnras/stt561. Retrieved 28 January 2023.
^Alves, João; Zucker, Catherine; Goodman, Alyssa A.; Speagle, Joshua S.; Meingast, Stefan; Robitaille, Thomas; Finkbeiner, Douglas P.; Schlafly, Edward F.; Green, Gregory M. (23 January 2020). "A Galactic-scale gas wave in the Solar Neighborhood". Nature. 578 (7794): 237–239. arXiv:2001.08748v1. Bibcode:2020Natur.578..237A. doi:10.1038/s41586-019-1874-z. PMID 31910431. S2CID 256822920.
^Sir Patrick Moore, ed. (2002) [1987]. Astronomy Encyclopædia (Revised ed.). Great Britain: Philip's. p. 164.
^. The GAIA Study Report. Archived from the original on 2003-08-04. Retrieved 2006-07-18.
^"Gould Belt". The Encyclopedia of Astrobiology Astronomy and Spaceflight. Retrieved 2006-07-18.
^"Orion's dark secret: Violence shaped the night sky", New Scientist, 21 Nov. 2009, pp. 42–5.
gould, belt, local, ring, stars, milky, tilted, away, from, galactic, plane, about, degrees, first, reported, john, herschel, benjamin, gould, 19th, century, contains, many, type, stars, many, nearest, star, forming, regions, local, orion, which, belongs, rela. The Gould Belt is a local ring of stars in the Milky Way tilted away from the galactic plane by about 16 20 degrees first reported by John Herschel and Benjamin Gould in the 19th century 1 It contains many O and B type stars and many of the nearest star forming regions of the local Orion Arm to which the Sun belongs The relative proximity of these star forming regions spurred the Gould Belt Survey project to determine what caused them Mesh map of the inner Gould Belt created from Gaia observatory data It was long speculated that the belt was a physical structure in the galactic disk but data from the Gaia survey indicate that several of its star forming regions belong instead to the separate Radcliffe wave and Split linear structures in the Orion Arm and that the circular appearance of the belt results mostly from the projection of these structures onto the celestial sphere 2 The belt contains bright young stars which formed about 30 to 50 million years ago in several constellations 3 4 5 These lie along a great circle slightly inclined to the Milky Way including in order from Taurus Taurus Perseus Cepheus Lacerta Scorpius Lupus southern Centaurus Crux the Southern Cross Carina Vela Puppis Canis Major and Orion Star forming regions and OB associations that make up this region include the Orion Nebula and the Orion molecular clouds the Scorpius Centaurus OB association Cepheus OB2 Perseus OB2 and the Taurus Auriga molecular clouds The Serpens molecular cloud containing star forming regions W40 and Serpens south is often included in Gould Belt surveys but is not formally part of the Gould Belt due to its greater distance A theory proposed around 2009 suggests that the Gould Belt formed about 30 million years ago when a blob of dark matter collided with the molecular cloud in our region There is also evidence for similar Gould belts in other galaxies 6 7 See also editLocal Bubble Cavity in the interstellar medium which contains the Local Interstellar Cloud Local Interstellar Cloud Interstellar cloud in the Milky Way Galaxy Orion Arm Minor spiral arm of the Milky Way galaxy contains the Solar System Perseus Arm One of two major spiral arms of the Milky Way galaxy Radcliffe waveReferences edit Kirk J M et al 21 June 2013 First results from the Herschel Gould Belt Survey in Taurus Monthly Notices of the Royal Astronomical Society 432 2 1424 1433 arXiv 1304 4098 doi 10 1093 mnras stt561 Retrieved 28 January 2023 Alves Joao Zucker Catherine Goodman Alyssa A Speagle Joshua S Meingast Stefan Robitaille Thomas Finkbeiner Douglas P Schlafly Edward F Green Gregory M 23 January 2020 A Galactic scale gas wave in the Solar Neighborhood Nature 578 7794 237 239 arXiv 2001 08748v1 Bibcode 2020Natur 578 237A doi 10 1038 s41586 019 1874 z PMID 31910431 S2CID 256822920 Sir Patrick Moore ed 2002 1987 Astronomy Encyclopaedia Revised ed Great Britain Philip s p 164 The Gould Belt The GAIA Study Report Archived from the original on 2003 08 04 Retrieved 2006 07 18 Gould Belt The Encyclopedia of Astrobiology Astronomy and Spaceflight Retrieved 2006 07 18 Orion s dark secret Violence shaped the night sky New Scientist 21 Nov 2009 pp 42 5 Bekki Kenji 2009 Dark impact and galactic star formation origin of the Gould belt Monthly Notices of the Royal Astronomical Society Letters 398 1 L36 L40 arXiv 0906 5117 Bibcode 2009MNRAS 398L 36B doi 10 1111 j 1745 3933 2009 00702 x S2CID 16173683 Archived from the original on 2012 12 08 External links edit nbsp Wikimedia Commons has media related to Gould Belt Map of the Gould Belt 3D evolution of the Gould Belt The Spitzer Gould Belt Survey Portals nbsp Astronomy nbsp Space Retrieved from https en wikipedia org w index php title Gould Belt amp oldid 1193806506, wikipedia, wiki, book, books, library,
