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Authordc.contributor.authorBerné, O. 
Authordc.contributor.authorFuente, A. 
Authordc.contributor.authorPantin, E. 
Authordc.contributor.authorBujarrabal, V. 
Authordc.contributor.authorBaruteau, C. 
Authordc.contributor.authorPilleri, P. 
Authordc.contributor.authorHabart, E. 
Authordc.contributor.authorMénard, Francois 
Authordc.contributor.authorCernicharo, J. 
Authordc.contributor.authorTielens, A. G. G. M. 
Authordc.contributor.authorJoblin, C. 
Admission datedc.date.accessioned2015-10-07T18:02:19Z
Available datedc.date.available2015-10-07T18:02:19Z
Publication datedc.date.issued2015
Cita de ítemdc.identifier.citationAstronomy & Astrophysics 578, L8 (2015)en_US
Identifierdc.identifier.otherDOI: 10.1051/0004-6361/201526041
Identifierdc.identifier.urihttps://repositorio.uchile.cl/handle/2250/134218
General notedc.descriptionArtículo de publicación ISIen_US
Abstractdc.description.abstractPlanets are thought to form in the gas and dust disks around young stars. In particular, it has been proposed that giant planets can form through the gravitational instability of massive extended disks around intermediate-mass stars. However, we still lack direct observations to constrain this mechanism. We have spatially resolved the 8.6 and 11.2 mu m emission of a massive protoplanetary disk seen edge on around an A star, Gomez's Hamburger (GoHam), using VISIR at the Very Large Telescope. A compact region situated at a projected distance of 350 +/- 50 AU south of the central star is found to have a reduced emission. This asymmetry is fully consistent with the presence of a cold density structure, or clump, identified in earlier CO observations, and we derive physical characteristics consistent with those observations: a mass of 0.8-11.4 Jupiter masses (for a dust-to-gas mass ratio of 0.01), a radius of about 102 astronomical units, and a local density of about 107 cm(-3). Based on this evidence, we argue that this clump, which we call GoHam b, is a promising candidate for a young protoplanet formed by gravitational instability that might be representative of the precursors of massive planets observed around A stars, such as HR 8799 or Beta pictoris. More detailed studies at high angular resolution are needed to better constrain the physical properties of this object to confirm this proposal.en_US
Lenguagedc.language.isoenen_US
Publisherdc.publisherESOen_US
Type of licensedc.rightsAtribución-NoComercial-SinDerivadas 3.0 Chile*
Link to Licensedc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/*
Keywordsdc.subjectProtoplanetary disksen_US
Keywordsdc.subjectPlanets and satellites: formationen_US
Keywordsdc.subjectInfrared: planetary systemsen_US
Keywordsdc.subjectSubmillimeter: planetary systemsen_US
Keywordsdc.subjectMethods: observationalen_US
Títulodc.titleVery Large Telescope observations of Gomez's Hamburger: Insights into a young protoplanet candidateen_US
Document typedc.typeArtículo de revista


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Atribución-NoComercial-SinDerivadas 3.0 Chile
Except where otherwise noted, this item's license is described as Atribución-NoComercial-SinDerivadas 3.0 Chile