Samples of Stars beyond the Solar System: Silicate Grains in Interplanetary Dust

We have identified six circumstellar silicate grains within interplanetary dust particles (IDPs). Their extrasolar origins are demonstrated by their extremely anomalous oxygen isotopic compositions. Three $^{17}O-rich$ grains appear to originate from red giant or asymptotic giant branch stars. One $...

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Veröffentlicht in:Science (American Association for the Advancement of Science) 2003-04, Vol.300 (5616), p.105-108
Hauptverfasser: Messenger, Scott, Keller, Lindsay P., Stadermann, Frank J., Walker, Robert M., Zinner, Ernst
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container_issue 5616
container_start_page 105
container_title Science (American Association for the Advancement of Science)
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creator Messenger, Scott
Keller, Lindsay P.
Stadermann, Frank J.
Walker, Robert M.
Zinner, Ernst
description We have identified six circumstellar silicate grains within interplanetary dust particles (IDPs). Their extrasolar origins are demonstrated by their extremely anomalous oxygen isotopic compositions. Three $^{17}O-rich$ grains appear to originate from red giant or asymptotic giant branch stars. One $^{16}O-rich$ grain may be from a metal-poor star. Two $^{16}O-poor$ grains have unknown stellar sources. One of the grains is forsterite, and two are amorphous silicate "GEMS" (glass with embedded metal and sulfides), which is consistent with astronomical identifications of crystalline and amorphous silicates in the outflows of evolved stars. These observations suggest cometary origins of these IDPs and underscore the perplexing absence of silicates among circumstellar dust grains from meteorites.
doi_str_mv 10.1126/science.1080576
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Their extrasolar origins are demonstrated by their extremely anomalous oxygen isotopic compositions. Three $^{17}O-rich$ grains appear to originate from red giant or asymptotic giant branch stars. One $^{16}O-rich$ grain may be from a metal-poor star. Two $^{16}O-poor$ grains have unknown stellar sources. One of the grains is forsterite, and two are amorphous silicate "GEMS" (glass with embedded metal and sulfides), which is consistent with astronomical identifications of crystalline and amorphous silicates in the outflows of evolved stars. These observations suggest cometary origins of these IDPs and underscore the perplexing absence of silicates among circumstellar dust grains from meteorites.</description><identifier>ISSN: 0036-8075</identifier><identifier>EISSN: 1095-9203</identifier><identifier>DOI: 10.1126/science.1080576</identifier><identifier>PMID: 12610229</identifier><identifier>CODEN: SCIEAS</identifier><language>eng</language><publisher>Washington, DC: American Association for the Advancement of Science</publisher><subject>Astronomical Phenomena ; Astronomy ; Carbon ; Chemical composition ; Circumstellar grains ; Circumstellar shells, clouds, and expanding envelopes. Circumstellar masers ; Cosmic Dust ; Dust ; Earth, ocean, space ; Exact sciences and technology ; Gem stones ; Interplanetary dust ; Interplanetary gas and dust (including gegenschein and zodiacal light) ; Interplanetary space ; Materials ; Meteorites ; Meteoroids ; Meteors, meteoroids and meteor streams ; Mineralogy ; Oxygen ; Oxygen Isotopes ; Silica ; Silicates ; Soil structure ; Solar System ; Solar systems ; Stars ; Stars &amp; galaxies ; Stellar characteristics and properties ; Temperature</subject><ispartof>Science (American Association for the Advancement of Science), 2003-04, Vol.300 (5616), p.105-108</ispartof><rights>Copyright 2003 American Association for the Advancement of Science</rights><rights>2003 INIST-CNRS</rights><rights>COPYRIGHT 2003 American Association for the Advancement of Science</rights><rights>COPYRIGHT 2003 American Association for the Advancement of Science</rights><rights>Copyright American Association for the Advancement of Science Apr 4, 2003</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a907t-eddbafa0c387086f36d3517bb1b044e1ba515201c21d40752e8614384cd257b13</citedby><cites>FETCH-LOGICAL-a907t-eddbafa0c387086f36d3517bb1b044e1ba515201c21d40752e8614384cd257b13</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/3834309$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/3834309$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,776,780,799,2871,2872,27901,27902,57992,58225</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=14733968$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/12610229$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Messenger, Scott</creatorcontrib><creatorcontrib>Keller, Lindsay P.</creatorcontrib><creatorcontrib>Stadermann, Frank J.</creatorcontrib><creatorcontrib>Walker, Robert M.</creatorcontrib><creatorcontrib>Zinner, Ernst</creatorcontrib><title>Samples of Stars beyond the Solar System: Silicate Grains in Interplanetary Dust</title><title>Science (American Association for the Advancement of Science)</title><addtitle>Science</addtitle><description>We have identified six circumstellar silicate grains within interplanetary dust particles (IDPs). 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source Jstor Complete Legacy; MEDLINE; Science Magazine
subjects Astronomical Phenomena
Astronomy
Carbon
Chemical composition
Circumstellar grains
Circumstellar shells, clouds, and expanding envelopes. Circumstellar masers
Cosmic Dust
Dust
Earth, ocean, space
Exact sciences and technology
Gem stones
Interplanetary dust
Interplanetary gas and dust (including gegenschein and zodiacal light)
Interplanetary space
Materials
Meteorites
Meteoroids
Meteors, meteoroids and meteor streams
Mineralogy
Oxygen
Oxygen Isotopes
Silica
Silicates
Soil structure
Solar System
Solar systems
Stars
Stars & galaxies
Stellar characteristics and properties
Temperature
title Samples of Stars beyond the Solar System: Silicate Grains in Interplanetary Dust
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