IRAS observations of a large circumstellar dust shell around W Hydrae
IRAS observations at 60 and 100 microns reveal a large 30-40-arcmin (about 1-pc) diameter dust shell centered on the oxygen-rich red giant W Hya. Except for SNRs, this is the largest mass-loss envelope, in apparent diameter, known around any evolved star, including PN. W Hya's radiation field,...
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| Veröffentlicht in: | Astronomy and astrophysics (Berlin) 1990-03, Vol.229 (2 Ma), p.L5-L8 |
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| container_issue | 2 Ma |
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| container_title | Astronomy and astrophysics (Berlin) |
| container_volume | 229 |
| creator | Hawkins, G. W. |
| description | IRAS observations at 60 and 100 microns reveal a large 30-40-arcmin (about 1-pc) diameter dust shell centered on the oxygen-rich red giant W Hya. Except for SNRs, this is the largest mass-loss envelope, in apparent diameter, known around any evolved star, including PN. W Hya's radiation field, stronger than the interstellar radiation field in the outer envelope, is sufficient to heat dust grains with IR emissivity proportional to lambda exp -1.2 to temperatures of about 40 K implied by the ratio of intensities at 60 and 100 microns. |
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W.</creator><creatorcontrib>Hawkins, G. W.</creatorcontrib><description>IRAS observations at 60 and 100 microns reveal a large 30-40-arcmin (about 1-pc) diameter dust shell centered on the oxygen-rich red giant W Hya. Except for SNRs, this is the largest mass-loss envelope, in apparent diameter, known around any evolved star, including PN. W Hya's radiation field, stronger than the interstellar radiation field in the outer envelope, is sufficient to heat dust grains with IR emissivity proportional to lambda exp -1.2 to temperatures of about 40 K implied by the ratio of intensities at 60 and 100 microns.</description><identifier>ISSN: 0004-6361</identifier><identifier>EISSN: 1432-0746</identifier><identifier>CODEN: AAEJAF</identifier><language>eng</language><publisher>Legacy CDMS: EDP Sciences</publisher><subject>Astronomy ; Astrophysics ; Earth, ocean, space ; Exact sciences and technology ; Giant and subgiant stars ; Normal stars (by class): general or individual ; Stars</subject><ispartof>Astronomy and astrophysics (Berlin), 1990-03, Vol.229 (2 Ma), p.L5-L8</ispartof><rights>1990 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=6844068$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Hawkins, G. W.</creatorcontrib><title>IRAS observations of a large circumstellar dust shell around W Hydrae</title><title>Astronomy and astrophysics (Berlin)</title><description>IRAS observations at 60 and 100 microns reveal a large 30-40-arcmin (about 1-pc) diameter dust shell centered on the oxygen-rich red giant W Hya. Except for SNRs, this is the largest mass-loss envelope, in apparent diameter, known around any evolved star, including PN. 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W.</creator><general>EDP Sciences</general><scope>CYE</scope><scope>CYI</scope><scope>IQODW</scope></search><sort><creationdate>19900301</creationdate><title>IRAS observations of a large circumstellar dust shell around W Hydrae</title><author>Hawkins, G. W.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-n135t-74f3d6af418c9dbec4da23eaf0f15dc1ac8bde737da7461d4832b5941ee638023</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1990</creationdate><topic>Astronomy</topic><topic>Astrophysics</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>Giant and subgiant stars</topic><topic>Normal stars (by class): general or individual</topic><topic>Stars</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hawkins, G. W.</creatorcontrib><collection>NASA Scientific and Technical Information</collection><collection>NASA Technical Reports Server</collection><collection>Pascal-Francis</collection><jtitle>Astronomy and astrophysics (Berlin)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hawkins, G. W.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>IRAS observations of a large circumstellar dust shell around W Hydrae</atitle><jtitle>Astronomy and astrophysics (Berlin)</jtitle><date>1990-03-01</date><risdate>1990</risdate><volume>229</volume><issue>2 Ma</issue><spage>L5</spage><epage>L8</epage><pages>L5-L8</pages><issn>0004-6361</issn><eissn>1432-0746</eissn><coden>AAEJAF</coden><abstract>IRAS observations at 60 and 100 microns reveal a large 30-40-arcmin (about 1-pc) diameter dust shell centered on the oxygen-rich red giant W Hya. Except for SNRs, this is the largest mass-loss envelope, in apparent diameter, known around any evolved star, including PN. W Hya's radiation field, stronger than the interstellar radiation field in the outer envelope, is sufficient to heat dust grains with IR emissivity proportional to lambda exp -1.2 to temperatures of about 40 K implied by the ratio of intensities at 60 and 100 microns.</abstract><cop>Legacy CDMS</cop><pub>EDP Sciences</pub></addata></record> |
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| ispartof | Astronomy and astrophysics (Berlin), 1990-03, Vol.229 (2 Ma), p.L5-L8 |
| issn | 0004-6361 1432-0746 |
| language | eng |
| recordid | cdi_pascalfrancis_primary_6844068 |
| source | EDP Sciences; NASA Technical Reports Server; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Astronomy Astrophysics Earth, ocean, space Exact sciences and technology Giant and subgiant stars Normal stars (by class): general or individual Stars |
| title | IRAS observations of a large circumstellar dust shell around W Hydrae |
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