dc.contributor.author | Biller, Beth | |
dc.contributor.author | Lacour, Sylvestre | |
dc.contributor.author | Juhász, Attila | |
dc.contributor.author | Benisty, Myriam | |
dc.contributor.author | Chauvin, Gaël | |
dc.contributor.author | Olofsson, Johan | |
dc.contributor.author | Pott, Jörg Uwe | |
dc.contributor.author | Müller, André | |
dc.contributor.author | Sicilia-Aguilar, Aurora | |
dc.contributor.author | Bonnefoy, Mickaël | |
dc.contributor.author | Tuthill, Peter | |
dc.contributor.author | Thébault, Philippe | |
dc.contributor.author | Crida, Aurélien | |
dc.contributor.author | Heninng, Thomas | |
dc.contributor.other | UAM. Departamento de Física Teórica | es_ES |
dc.date.accessioned | 2014-09-29T12:47:08Z | |
dc.date.available | 2014-09-29T12:47:08Z | |
dc.date.issued | 2012-07-10 | |
dc.identifier.citation | The Astrophysical Journal Letters 753.2 (2012): L38 | en_US |
dc.identifier.issn | 2041-8205 (print) | es_ES |
dc.identifier.issn | 2041-8213 (online) | es_ES |
dc.identifier.uri | http://hdl.handle.net/10486/662002 | |
dc.description | The Astrophysical Journal Letters 753.2 (2012): L38 reproduced by permission of the AAS | en_US |
dc.description.abstract | With the uniquely high contrast within 0''.1 (Δmag(L′) = 5-6.5 mag) available using Sparse Aperture Masking with NACO at Very Large Telescope, we detected asymmetry in the flux from the Herbig Fe star HD 142527 with a barycenter emission situated at a projected separation of 88 ± 5 mas (12.8 ± 1.5 AU at 145pc) and flux ratios in H, K, and L′ of 0.016 ± 0.007, 0.012 ± 0.008, and 0.0086 ± 0.0011, respectively (3σ errors), relative to the primary star and disk. After extensive closure-phase modeling, we interpret this detection as a close-in, low-mass stellar companion with an estimated mass of ∼0.1-0.4 M⊙. HD 142527 has a complex disk structure, with an inner gap imaged in both the near and mid-IR as well as a spiral feature in the outer disk in the near-IR. This newly detected low-mass stellar companion may provide a critical explanation of the observed disk structure. | en_US |
dc.format.extent | 5 pag. | es_ES |
dc.format.mimetype | application/pdf | en |
dc.language.iso | eng | en |
dc.publisher | The American Astronomical Society | en_US |
dc.relation.ispartof | The Astrophysical Journal Letters | en_US |
dc.rights | © 2012. The American Astronomical Society | en_US |
dc.subject.other | Brown dwarfs | en_US |
dc.subject.other | Circumstellar matter | en_US |
dc.subject.other | Planetary systems | en_US |
dc.subject.other | Stars: emission-line, Be | en_US |
dc.subject.other | Stars: low-mass | en_US |
dc.title | A likely close-in low-mass stellar companion to the transitional disk star HD142527 | en_US |
dc.type | article | en |
dc.subject.eciencia | Física | es_ES |
dc.relation.publisherversion | http://dx.doi.org/10.1088/2041-8205/753/2/L38 | en |
dc.identifier.doi | 10.1088/2041-8205/753/2/L38 | es_ES |
dc.identifier.publicationfirstpage | L38 | es_ES |
dc.identifier.publicationissue | 2 | es_ES |
dc.identifier.publicationlastpage | undefined | es_ES |
dc.identifier.publicationvolume | 753 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.rights.accessRights | openAccess | en |
dc.authorUAM | Sicilia Aguilar, María De La Aurora (264647) | |
dc.facultadUAM | Facultad de Ciencias | |