VLTI-MATISSE L - And N -band aperture-synthesis imaging of the unclassified B[e] star FS Canis Majoris

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dc.contributor.authorHofmann, K.-H.
dc.contributor.authorBensberg, A.
dc.contributor.authorSchertl, D.
dc.contributor.authorWeigelt, G.
dc.contributor.authorWolf, S.
dc.contributor.authorMeilland, A.
dc.contributor.authorMillour, F.
dc.contributor.authorWaters, L.B.F.M.
dc.contributor.authorKraus, S.
dc.contributor.authorOhnaka, K.
dc.contributor.authorLopez, B.
dc.contributor.authorPetrov, R.G.
dc.contributor.authorLagarde, S.
dc.contributor.authorBerio, Ph.
dc.contributor.authorAllouche, F.
dc.contributor.authorRobbe-Dubois, S.
dc.contributor.authorJaffe, W.
dc.contributor.authorHenning, Th.
dc.contributor.authorPaladini, C.
dc.contributor.authorSchöller, M.
dc.contributor.authorMérand, A.
dc.contributor.authorGlindemann, A.
dc.contributor.authorBeckmann, U.
dc.contributor.authorHeininger, M.
dc.contributor.authorBettonvil, F.
dc.contributor.authorZins, G.
dc.contributor.authorWoillez, J.
dc.contributor.authorBristow, P.
dc.contributor.authorStee, P.
dc.contributor.authorVakili, F.
dc.contributor.authorVan Boekel, R.
dc.contributor.authorHogerheijde, M.R.
dc.contributor.authorDominik, C.
dc.contributor.authorAugereau, J.-C.
dc.contributor.authorMatter, A.
dc.contributor.authorHron, J.
dc.contributor.authorPantin, E.
dc.contributor.authorRivinius, Th.
dc.contributor.authorDe Wit, W.-J.
dc.contributor.authorVarga, J.
dc.contributor.authorKlarmann, L.
dc.contributor.authorMeisenheimer, K.
dc.contributor.authorGámez Rosas, V.
dc.contributor.authorBurtscher, L.
dc.contributor.authorLeftley, J.
dc.contributor.authorIsbell, J.W.
dc.contributor.authorYoffe, G.
dc.contributor.authorKokoulina, E.
dc.contributor.authorDanchi, W.C.
dc.contributor.authorCruzalèbes, P.
dc.contributor.authorDomiciano De Souza, A.
dc.contributor.authorDrevon, J.
dc.contributor.authorHocdé, V.
dc.contributor.authorKreplin, A.
dc.contributor.authorLabadie, L.
dc.contributor.authorConnot, C.
dc.contributor.authorNußbaum, E.
dc.contributor.authorLehmitz, M.
dc.contributor.authorAntonelli, P.
dc.contributor.authorGraser, U.
dc.contributor.authorLeinert, C.
dc.date.accessioned2024-08-27T13:47:43Z
dc.date.available2024-08-27T13:47:43Z
dc.date.issued2022-02-01
dc.descriptionIndexación: Scopus.
dc.description.abstractContext. FS Canis Majoris (FS CMa, HD 45677) is an unclassified B[e] star surrounded by an inclined dust disk. The evolutionary stage of FS CMa is still debated. Perpendicular to the circumstellar disk, a bipolar outflow was detected. Infrared aperture-synthesis imaging provides us with a unique opportunity to study the disk structure. Aims. Our aim is to study the intensity distribution of the disk of FS CMa in the mid-infrared L and N bands. Methods. We performed aperture-synthesis imaging of FS CMa with the MATISSE instrument (Multi AperTure mid-Infrared SpectroScopic Experiment) in the low spectral resolution mode to obtain images in the L and N bands. We computed radiative transfer models that reproduce the L- and N-band intensity distributions of the resolved disks. Results. We present L- and N-band aperture-synthesis images of FS CMa reconstructed in the wavelength bands of 3.4-3.8 and 8.6-9.0 μm. In the L-band image, the inner rim region of an inclined circumstellar disk and the central object can be seen with a spatial resolution of 2.7 milliarcsec (mas). An inner disk cavity with an angular diameter of ~6 × 12 mas is resolved. The L-band disk consists of a bright northwestern (NW) disk region and a much fainter southeastern (SE) region. The images suggest that we are looking at the bright inner wall of the NW disk rim, which is on the far side of the disk. In the N band, only the bright NW disk region is seen. In addition to deriving the inclination and the inner disk radius, fitting the reconstructed brightness distributions via radiative transfer modelling allows one to constrain the innermost disk structure, in particular the shape of theinner disk rim. © K.-H. Hofmann et al. 2022.
dc.description.urihttps://www.aanda.org/articles/aa/full_html/2022/02/aa41601-21/aa41601-21.html
dc.identifier.citationAstronomy and Astrophysics, Volume 658, 1 February 2022, Article number A81
dc.identifier.doi10.1051/0004-6361/202141601
dc.identifier.issn0004-6361
dc.identifier.urihttps://repositorio.unab.cl/handle/ria/59546
dc.language.isoen
dc.publisherEDP Sciences
dc.rights.licenseAttribution 4.0 International CC BY 4.0 Deed
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectCircumstellar matter
dc.subjectStars: emission-line, Be
dc.subjectStars: imaging
dc.subjectStars: individual: FS CMa
dc.subjectTechniques: image processing
dc.subjectTechniques: interferometric
dc.titleVLTI-MATISSE L - And N -band aperture-synthesis imaging of the unclassified B[e] star FS Canis Majoris
dc.typeArtículo
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