File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Submillimeter array outflow/disk studies in the massive star-forming region iras 18089-1732

TitleSubmillimeter array outflow/disk studies in the massive star-forming region iras 18089-1732
Authors
KeywordsAccretion
Accretion Disks
Ism: Individual (Iras 18089-1732)
Ism: Jets And Outflows
Stars: Formation
Submillimeter
Techniques: Interferometric
Issue Date2004
PublisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205
Citation
Astrophysical Journal Letters, 2004, v. 616 n. 1 II, p. L23-L26 How to Cite?
AbstractSubmillimeter Array observations of the massive star-forming region IRAS 18089-1732 in the 1 mm and 850 μm band reveal outflow and disk signatures in different molecular lines. The SiO (5-4) data show a collimated outflow in the northern direction. In contrast, the HCOOCH 3 (20-19) line, which traces high-density gas, is confined to the very center of the region and shows a velocity gradient across the core. The HCOOCH, velocity gradient is not exactly perpendicular to the outflow axis but between an assumed disk plane and the outflow axis. We interpret these HCOOCH 3 features as originating from a rotating disk that is influenced by the outflow and infall. On the basis of the (sub)millimeter continuum emission, the mass of the central core is estimated to be around 38 M⊙. The dynamical mass derived from the HCOOCH 3 data is 22 M⊙, of about the same order as the core mass. Thus, the mass of the protostar/disk/envelope system is dominated by its disk and envelope. The two frequency continuum data of the core indicate a low dust opacity index β ∼ 1.2 in the outer part, decreasing to β ∼ 0. 5 on shorter spatial scales.
Persistent Identifierhttp://hdl.handle.net/10722/174922
ISSN
2015 Impact Factor: 5.487
2015 SCImago Journal Rankings: 3.369
References

 

DC FieldValueLanguage
dc.contributor.authorBeuther, Hen_US
dc.contributor.authorHunter, TRen_US
dc.contributor.authorZhang, Qen_US
dc.contributor.authorSridharan, TKen_US
dc.contributor.authorZhao, JHen_US
dc.contributor.authorSollins, Pen_US
dc.contributor.authorHo, PTPen_US
dc.contributor.authorOhashi, Nen_US
dc.contributor.authorSu, YNen_US
dc.contributor.authorLim, Jen_US
dc.contributor.authorLiu, SYen_US
dc.date.accessioned2012-11-26T08:48:08Z-
dc.date.available2012-11-26T08:48:08Z-
dc.date.issued2004en_US
dc.identifier.citationAstrophysical Journal Letters, 2004, v. 616 n. 1 II, p. L23-L26en_US
dc.identifier.issn2041-8205en_US
dc.identifier.urihttp://hdl.handle.net/10722/174922-
dc.description.abstractSubmillimeter Array observations of the massive star-forming region IRAS 18089-1732 in the 1 mm and 850 μm band reveal outflow and disk signatures in different molecular lines. The SiO (5-4) data show a collimated outflow in the northern direction. In contrast, the HCOOCH 3 (20-19) line, which traces high-density gas, is confined to the very center of the region and shows a velocity gradient across the core. The HCOOCH, velocity gradient is not exactly perpendicular to the outflow axis but between an assumed disk plane and the outflow axis. We interpret these HCOOCH 3 features as originating from a rotating disk that is influenced by the outflow and infall. On the basis of the (sub)millimeter continuum emission, the mass of the central core is estimated to be around 38 M⊙. The dynamical mass derived from the HCOOCH 3 data is 22 M⊙, of about the same order as the core mass. Thus, the mass of the protostar/disk/envelope system is dominated by its disk and envelope. The two frequency continuum data of the core indicate a low dust opacity index β ∼ 1.2 in the outer part, decreasing to β ∼ 0. 5 on shorter spatial scales.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.subjectAccretionen_US
dc.subjectAccretion Disksen_US
dc.subjectIsm: Individual (Iras 18089-1732)en_US
dc.subjectIsm: Jets And Outflowsen_US
dc.subjectStars: Formationen_US
dc.subjectSubmillimeteren_US
dc.subjectTechniques: Interferometricen_US
dc.titleSubmillimeter array outflow/disk studies in the massive star-forming region iras 18089-1732en_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.scopuseid_2-s2.0-12344258994en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-12344258994&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume616en_US
dc.identifier.issue1 IIen_US
dc.identifier.spageL23en_US
dc.identifier.epageL26en_US
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridBeuther, H=10140586700en_US
dc.identifier.scopusauthoridHunter, TR=35394114700en_US
dc.identifier.scopusauthoridZhang, Q=8602636100en_US
dc.identifier.scopusauthoridSridharan, TK=6701592129en_US
dc.identifier.scopusauthoridZhao, JH=7410310692en_US
dc.identifier.scopusauthoridSollins, P=7004013438en_US
dc.identifier.scopusauthoridHo, PTP=7402211489en_US
dc.identifier.scopusauthoridOhashi, N=7202558313en_US
dc.identifier.scopusauthoridSu, YN=35753955800en_US
dc.identifier.scopusauthoridLim, J=7403453870en_US
dc.identifier.scopusauthoridLiu, SY=7409459358en_US

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats