Investigation of the inner structures around HD169142 with VLT/SPHERE
Author
dc.contributor.author
Ligi, R.
Author
dc.contributor.author
Zurlo, A.
Admission date
dc.date.accessioned
2018-07-27T19:43:42Z
Available date
dc.date.available
2018-07-27T19:43:42Z
Publication date
dc.date.issued
2018
Cita de ítem
dc.identifier.citation
Monthly Notices of the Royal Astronomical Society Volumen: 473 Número: 2 Páginas: 1774-1783
es_ES
Identifier
dc.identifier.other
10.1093/mnras/stx2318
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/150401
Abstract
dc.description.abstract
We present observations of the Herbig Ae star HD 169142 with the VLT/SPHERE instruments InfraRed Dual-band Imager and Spectrograph (IRDIS) (K1K2 and H2H3 bands) and the Integral Field Spectrograph (IFS) (Y, J and H bands). We detect several bright blobs at similar to 180 mas separation from the star, and a faint arc-like structure in the IFS data. Our reference differential imaging (RDI) data analysis also finds a bright ring at the same separation. We show, using a simulation based on polarized light data, that these blobs are actually part of the ring at 180 mas. These results demonstrate that the earlier detections of blobs in the H and K-S bands at these separations in Biller et al. as potential planet/substellar companions are actually tracing a bright ring with a Keplerian motion. Moreover, we detect in the images an additional bright structure at similar to 93 mas separation and position angle of 355 degrees, at a location very close to previous detections. It appears point-like in the YJ and K bands but is more extended in the H band. We also marginally detect an inner ring in the RDI data at similar to 100 mas. Follow-up observations are necessary to confirm the detection and the nature of this source and structure.
es_ES
Patrocinador
dc.description.sponsorship
Centre National d'Etudes Spatiales (CNES)
Swiss National Science Foundation
Programme National de Planetologie of Centre National de la Recherche Scientifique - Institut National des Sciences de l'Univers (CNRS-INSU)
Programme National de Physique Stellaire of Centre National de la Recherche Scientifique - Institut National des Sciences de l'Univers (CNRS-INSU)
French Labex OSUG (Investissements d'avenir)
ANR10 LABX56
CNRS
Agence Nationale de la Recherche (ANR)
ANR-14-CE33-0018
ANR of France
ANR-16-CE31-0013
ESO
CNRS (France)
MPIA (Germany)
INAF (Italy)
FINES (Switzerland)
NOVA (Netherlands)
European Commission Sixth Framework Programme as part of the Optical Infrared Coordination Network for Astronomy (OPTICON)
RII3-Ct-2004-001566
European Commission Seventh Framework Programme as part of the Optical Infrared Coordination Network for Astronomy (OPTICON)
226604
312430