Show simple item record

Authordc.contributor.authorRosotti, G. P. 
Authordc.contributor.authorBenisty, M. 
Authordc.contributor.authorJuhasz, A. 
Authordc.contributor.authorTeague, R. 
Authordc.contributor.authorClarke, C. 
Authordc.contributor.authorDominik, C. 
Authordc.contributor.authorDullemond, C. P. 
Authordc.contributor.authorKlaassen, P. D. 
Authordc.contributor.authorMatra, L. 
Authordc.contributor.authorStolker, T. 
Cita de ítemdc.identifier.citationMNRAS 000, 1–15 (2019)es_ES
Abstractdc.description.abstractScattered light high-resolution imaging of the protoplanetary disc orbiting HD100453 shows two symmetric spiral arms, possibly launched by an external stellar companion. In this paper, we present new, sensitive high-resolution (similar to 30 mas) Band 7 ALMA observations of this source. This is the first source where we find counterparts in the sub-mm continuum to both scattered light spirals. The CO J = 3-2 emission line also shows two spiral arms; in this case, they can be traced over a more extended radial range, indicating that the southern spiral arm connects to the companion position. This is clear evidence that the companion is responsible for launching the spirals. The pitch angle of the submillimetre continuum spirals (similar to 6 degrees) is lower than the one in scattered light (similar to 16 degrees). We show that hydrodynamical simulations of binary-disc interaction can account for the difference in pitch angle only if one takes into account that the mid-plane is colder than the upper layers of the disc, as expected for the case of externally irradiated discs.es_ES
Patrocinadordc.description.sponsorshipDISCSIM project - European Research Council under ERC-2013-ADG 341137 Netherlands Organization for Scientific Research (NWO) 016.Veni.192.233 BEIS capital funding via STFC capital grants ST/P002307/1 ST/R002452/1 BEIS capital funding via STFC operations grant ST/R00689X/1 French National Research Agency (ANR) ANR-16-CE31-0013 European Union (EU) 823823 Netherlands Organisation for Scientific Research (NWO) TOP-1 grant as part of the research programme 'Herbig Ae/Be stars, Rosetta stones for understanding the formation of planetary systems' 614.001.552 ETH Zurich Postdoctoral Fellowship Programes_ES
Publisherdc.publisherOxford Univ Presses_ES
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile*
Link to Licensedc.rights.uri*
Sourcedc.sourceMonthly Notices of the Royal Astronomical Societyes_ES
Keywordsdc.subjectAccretion, accretion discses_ES
Keywordsdc.subjectProtoplanetary discses_ES
Keywordsdc.subjectCircumstellar matteres_ES
Keywordsdc.subjectSubmillimetre: planetary systemses_ES
Títulodc.titleSpiral arms in the protoplanetary disc HD100453 detected with ALMA: evidence for binary-disc interaction and a vertical temperature gradientes_ES
Document typedc.typeArtículo de revistaes_ES
Indexationuchile.indexArtículo de publicación ISIes_ES

Files in this item


This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial-NoDerivs 3.0 Chile
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Chile