VLT/NACO adaptive optics imaging of the TY CrA system - A fourth stellar component candidate detected

G. Chauvin; A-M. Lagrange; H. Beust; T. Fusco; D. Mouillet; F. Lacombe; E. Gendron; G. Rousset; D. Rouan; W. Brandner; R. Lenzen; N. Hubin; M. Hartung; C. Perrier

doi:10.1051/0004-6361:20030554

arXiv · astro-ph/0304271

VLT/NACO adaptive optics imaging of the TY CrA system - A fourth stellar component candidate detected

G. Chauvin·A-M. Lagrange·H. Beust·T. Fusco·D. Mouillet·F. Lacombe·E. Gendron·G. Rousset·D. Rouan·W. Brandner·R. Lenzen·N. Hubin·M. Hartung·C. Perrier

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Abstract

We report the detection of a possible subsolar mass companion to the triple young system TY CrA using the NACO instrument at the VLT UT4 during its commissioning. Assuming for TY CrA a distance similar to that of the close binary system HD 176386, the photometric spectral type of this fourth stellar component candidate is consistent with an ~M4 star. We discuss the dynamical stability of this possible quadruple system as well as the possible location of dusty particles inside or outside the system.

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G. Chauvin, A-M. Lagrange, H. Beust, T. Fusco, D. Mouillet, F. Lacombe, E. Gendron, G. Rousset, D. Rouan, W. Brandner, R. Lenzen, N. Hubin, M. Hartung, C. Perrier. 2003-04-15. VLT/NACO adaptive optics imaging of the TY CrA system - A fourth stellar component candidate detected. https://doi.org/10.1051/0004-6361%3A20030554

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