Biased theories of galaxy formation with arbitrary threshold functions and background distribution
The technical aspects of considering non-theta thresholds within the framework of biased theories of galaxy formation are discussed, without restricting the treatment to background Gaussian matter distribution. First, non-Gaussian backgrounds and non-theta thresholds are simultaneously considered. T...
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| Veröffentlicht in: | The Astrophysical journal 1990, Vol.348 (2), p.398-411 |
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| container_title | The Astrophysical journal |
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| creator | BORGANI, S BONOMETTO, S. A |
| description | The technical aspects of considering non-theta thresholds within the framework of biased theories of galaxy formation are discussed, without restricting the treatment to background Gaussian matter distribution. First, non-Gaussian backgrounds and non-theta thresholds are simultaneously considered. Then a number of other features are accounted for through suitable forms of threshold functions. Two specific examples of non-theta thresholds relate directly to the effects of nonspherical gravitational growing and a possible merging of fluctuations on different mass scales during the growing stages. It appears that these effects become stronger for mass scales corresponding to Abell cluster mass scale range. In particular, the threshold related to nonsphericity makes the observed number densities of Turner and Gott groups and Abell cluster naturally coherent. 49 refs. |
| doi_str_mv | 10.1086/168249 |
| format | Article |
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Galactic and extragalactic objects and systems. The universe</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>BORGANI, S</creatorcontrib><creatorcontrib>BONOMETTO, S. A</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>The Astrophysical journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>BORGANI, S</au><au>BONOMETTO, S. A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Biased theories of galaxy formation with arbitrary threshold functions and background distribution</atitle><jtitle>The Astrophysical journal</jtitle><date>1990</date><risdate>1990</risdate><volume>348</volume><issue>2</issue><spage>398</spage><epage>411</epage><pages>398-411</pages><issn>0004-637X</issn><eissn>1538-4357</eissn><coden>ASJOAB</coden><abstract>The technical aspects of considering non-theta thresholds within the framework of biased theories of galaxy formation are discussed, without restricting the treatment to background Gaussian matter distribution. First, non-Gaussian backgrounds and non-theta thresholds are simultaneously considered. Then a number of other features are accounted for through suitable forms of threshold functions. Two specific examples of non-theta thresholds relate directly to the effects of nonspherical gravitational growing and a possible merging of fluctuations on different mass scales during the growing stages. It appears that these effects become stronger for mass scales corresponding to Abell cluster mass scale range. In particular, the threshold related to nonsphericity makes the observed number densities of Turner and Gott groups and Abell cluster naturally coherent. 49 refs.</abstract><cop>Chicago, IL</cop><pub>University of Chicago Press</pub><doi>10.1086/168249</doi><tpages>14</tpages></addata></record> |
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| ispartof | The Astrophysical journal, 1990, Vol.348 (2), p.398-411 |
| issn | 0004-637X 1538-4357 |
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| subjects | 640105 - Astrophysics & Cosmology- Galaxies 640106 - Astrophysics & Cosmology- Cosmology Astronomy ASTROPHYSICS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COSMOLOGY DENSITY DISTRIBUTION DISTRIBUTION FUNCTIONS DOCUMENT TYPES Earth, ocean, space Exact sciences and technology FUNCTIONS GALACTIC EVOLUTION GALAXY CLUSTERS GRAVITATION Interstellar medium (ism) and nebulae in external galaxies MASS DISTRIBUTION MATHEMATICAL MODELS PHYSICAL PROPERTIES SPATIAL DISTRIBUTION Stellar systems. Galactic and extragalactic objects and systems. The universe |
| title | Biased theories of galaxy formation with arbitrary threshold functions and background distribution |
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