Hydrodynamic models of Herbig–Haro objects
Two-dimensional cylindrical hydrodynamic models of neutral and collisionally ionized stellar wind–cloudlet interactions are calculated as possible models for H–H objects. For neutral winds, shocks propagate into the cloudlet and its shape is distorted and displaced in the direction of the wind. For...
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| Veröffentlicht in: | Monthly notices of the Royal Astronomical Society 1983-11, Vol.205 (1), p.105-121 |
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| container_title | Monthly notices of the Royal Astronomical Society |
| container_volume | 205 |
| creator | Sandford, Maxwell T. Whitaker, Rodney W. |
| description | Two-dimensional cylindrical hydrodynamic models of neutral and collisionally ionized stellar wind–cloudlet interactions are calculated as possible models for H–H objects. For neutral winds, shocks propagate into the cloudlet and its shape is distorted and displaced in the direction of the wind. For hot ionized winds interacting with spherical mass concentrations a bow shock is formed, but the highest temperatures and largest ionization fraction occurs on the lee side of the cloudlet. Winds interacting with a neutral globule imbedded near the ionized surface of an elongated cloud produce the largest ionization at the cloud face presented to the wind and have a gradient in ion density from the face nearest the symmetry axis along the cloud surface. Cavities in the cloudlet surface facing the winds cause ‘hotspots’ having temperatures ∼ 105 K. |
| doi_str_mv | 10.1093/mnras/205.1.105 |
| format | Article |
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For neutral winds, shocks propagate into the cloudlet and its shape is distorted and displaced in the direction of the wind. For hot ionized winds interacting with spherical mass concentrations a bow shock is formed, but the highest temperatures and largest ionization fraction occurs on the lee side of the cloudlet. Winds interacting with a neutral globule imbedded near the ionized surface of an elongated cloud produce the largest ionization at the cloud face presented to the wind and have a gradient in ion density from the face nearest the symmetry axis along the cloud surface. 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For neutral winds, shocks propagate into the cloudlet and its shape is distorted and displaced in the direction of the wind. For hot ionized winds interacting with spherical mass concentrations a bow shock is formed, but the highest temperatures and largest ionization fraction occurs on the lee side of the cloudlet. Winds interacting with a neutral globule imbedded near the ionized surface of an elongated cloud produce the largest ionization at the cloud face presented to the wind and have a gradient in ion density from the face nearest the symmetry axis along the cloud surface. Cavities in the cloudlet surface facing the winds cause ‘hotspots’ having temperatures ∼ 105 K.</description><subject>Astronomy</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>H ii regions. Emission and reflection nebulae</subject><subject>Interstellar medium (ism) and nebulae in milky way</subject><subject>Stellar systems. 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Emission and reflection nebulae</topic><topic>Interstellar medium (ism) and nebulae in milky way</topic><topic>Stellar systems. Galactic and extragalactic objects and systems. The universe</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sandford, Maxwell T.</creatorcontrib><creatorcontrib>Whitaker, Rodney W.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Monthly notices of the Royal Astronomical Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sandford, Maxwell T.</au><au>Whitaker, Rodney W.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Hydrodynamic models of Herbig–Haro objects</atitle><jtitle>Monthly notices of the Royal Astronomical Society</jtitle><date>1983-11-01</date><risdate>1983</risdate><volume>205</volume><issue>1</issue><spage>105</spage><epage>121</epage><pages>105-121</pages><issn>0035-8711</issn><eissn>1365-2966</eissn><coden>MNRAA4</coden><abstract>Two-dimensional cylindrical hydrodynamic models of neutral and collisionally ionized stellar wind–cloudlet interactions are calculated as possible models for H–H objects. For neutral winds, shocks propagate into the cloudlet and its shape is distorted and displaced in the direction of the wind. For hot ionized winds interacting with spherical mass concentrations a bow shock is formed, but the highest temperatures and largest ionization fraction occurs on the lee side of the cloudlet. Winds interacting with a neutral globule imbedded near the ionized surface of an elongated cloud produce the largest ionization at the cloud face presented to the wind and have a gradient in ion density from the face nearest the symmetry axis along the cloud surface. Cavities in the cloudlet surface facing the winds cause ‘hotspots’ having temperatures ∼ 105 K.</abstract><cop>Oxford, UK</cop><pub>Oxford University Press</pub><doi>10.1093/mnras/205.1.105</doi><tpages>17</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Monthly notices of the Royal Astronomical Society, 1983-11, Vol.205 (1), p.105-121 |
| issn | 0035-8711 1365-2966 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_23207941 |
| source | Oxford University Press Journals Digital Archive Legacy; Oxford Journals Open Access Collection; EZB-FREE-00999 freely available EZB journals |
| subjects | Astronomy Earth, ocean, space Exact sciences and technology H ii regions. Emission and reflection nebulae Interstellar medium (ism) and nebulae in milky way Stellar systems. Galactic and extragalactic objects and systems. The universe |
| title | Hydrodynamic models of Herbig–Haro objects |
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