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Article: First confirmed detection of a bipolar molecular outflow from a young Brown dwarf

TitleFirst confirmed detection of a bipolar molecular outflow from a young Brown dwarf
Authors
Keywords[Gy92] 204)-Ism: Jets And Outflows-
Ism: Individual (Iso-Oph 102
Issue Date2008
PublisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205
Citation
Astrophysical Journal Letters, 2008, v. 689 n. 2 PART 2, p. L141-L144 How to Cite?
AbstractStudying the earliest stages in the birth of stars is crucial for understanding how they form. Brown dwarfs with masses between that of stars and planets are not massive enough to maintain stable hydrogen-burning fusion reactions during most of their lifetime. Their origins are subject to much debate in recent literature because their masses are far below the typical mass where core collapse is expected to occur. We present the first confirmed evidence that brown dwarfs undergo a phase of molecular outflow that is typical of young stars. Using the Submillimeter Array, we have obtained a map of a bipolar molecular outflow from a young brown dwarf. We estimate an outflow mass of 1.6 x 10 -4 M⊙ and a mass-loss rate of 1.4 x 10 -9 M⊙. These values are over 2 orders of magnitude smaller than the typical ones for T Tauri stars. From our millimeter continuum data and our own analysis of Spitzer infrared photometry, we estimate that the brown dwarf has a disk with a mass of 8 x 10 -3 M⊙ and an outer disk radius of 80 AU. Our results demonstrate that the bipolar molecular outflow operates down to planetary masses, occurring in brown dwarfs as a scaled-down version of the universal process seen in young stars. © 2008. The American Astronomical Society.
Persistent Identifierhttp://hdl.handle.net/10722/175163
ISSN
2015 Impact Factor: 5.487
2015 SCImago Journal Rankings: 3.369
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorPhanBao, Nen_US
dc.contributor.authorRiaz, Ben_US
dc.contributor.authorLee, CFen_US
dc.contributor.authorTang, YWen_US
dc.contributor.authorHo, PTPen_US
dc.contributor.authorMartín, ELen_US
dc.contributor.authorLim, Jen_US
dc.contributor.authorOhashi, Nen_US
dc.contributor.authorShang, Hen_US
dc.date.accessioned2012-11-26T08:49:30Z-
dc.date.available2012-11-26T08:49:30Z-
dc.date.issued2008en_US
dc.identifier.citationAstrophysical Journal Letters, 2008, v. 689 n. 2 PART 2, p. L141-L144en_US
dc.identifier.issn2041-8205en_US
dc.identifier.urihttp://hdl.handle.net/10722/175163-
dc.description.abstractStudying the earliest stages in the birth of stars is crucial for understanding how they form. Brown dwarfs with masses between that of stars and planets are not massive enough to maintain stable hydrogen-burning fusion reactions during most of their lifetime. Their origins are subject to much debate in recent literature because their masses are far below the typical mass where core collapse is expected to occur. We present the first confirmed evidence that brown dwarfs undergo a phase of molecular outflow that is typical of young stars. Using the Submillimeter Array, we have obtained a map of a bipolar molecular outflow from a young brown dwarf. We estimate an outflow mass of 1.6 x 10 -4 M⊙ and a mass-loss rate of 1.4 x 10 -9 M⊙. These values are over 2 orders of magnitude smaller than the typical ones for T Tauri stars. From our millimeter continuum data and our own analysis of Spitzer infrared photometry, we estimate that the brown dwarf has a disk with a mass of 8 x 10 -3 M⊙ and an outer disk radius of 80 AU. Our results demonstrate that the bipolar molecular outflow operates down to planetary masses, occurring in brown dwarfs as a scaled-down version of the universal process seen in young stars. © 2008. The American Astronomical Society.en_US
dc.languageengen_US
dc.publisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205en_US
dc.relation.ispartofAstrophysical Journal Lettersen_US
dc.subject[Gy92] 204)-Ism: Jets And Outflows-en_US
dc.subjectIsm: Individual (Iso-Oph 102en_US
dc.titleFirst confirmed detection of a bipolar molecular outflow from a young Brown dwarfen_US
dc.typeArticleen_US
dc.identifier.emailLim, J: jjlim@hku.hken_US
dc.identifier.authorityLim, J=rp00745en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1086/595961en_US
dc.identifier.scopuseid_2-s2.0-67649651521en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-67649651521&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume689en_US
dc.identifier.issue2 PART 2en_US
dc.identifier.spageL141en_US
dc.identifier.epageL144en_US
dc.identifier.isiWOS:000262734000016-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridPhanBao, N=8719607900en_US
dc.identifier.scopusauthoridRiaz, B=12790939100en_US
dc.identifier.scopusauthoridLee, CF=35330124000en_US
dc.identifier.scopusauthoridTang, YW=27868095600en_US
dc.identifier.scopusauthoridHo, PTP=7402211489en_US
dc.identifier.scopusauthoridMartín, EL=7404092339en_US
dc.identifier.scopusauthoridLim, J=7403453870en_US
dc.identifier.scopusauthoridOhashi, N=7202558313en_US
dc.identifier.scopusauthoridShang, H=7102401022en_US
dc.identifier.citeulike3664941-

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