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

A.-M. Lagrange; Baraffe; Beust; Bibo; Casey; Casey; Chen; Claret; Claret; Conan; Corporon; Corporon; Cruz-Gonzalez; D'Antona; D. Bauduin; D. Mouillet; D. Rouan; de Winter; E. Gendron; F. Lacombe; Fusco; G. Chauvin; G. Rousset; H. Beust; Harrington; J.-M. Conan; Kozai; M. Hartung; N. Hubin; Neuhäuser; P. Pujet; Palla; Prato; R. Lenzen; Siebenmorgen; Stecklum; Swenson; Söderhjelm; T. Fusco; Teixeira; W. Brandner; Wilking; Wilking

research

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

Authors: A.-M. Lagrange
Baraffe
Beust
Bibo
Casey
Casey
Chen
Claret
Claret
Conan
Corporon
Corporon
Cruz-Gonzalez
D'Antona
D. Bauduin
D. Mouillet
D. Rouan
de Winter
E. Gendron
F. Lacombe
Fusco
G. Chauvin
G. Rousset
H. Beust
Harrington
J.-M. Conan
Kozai
M. Hartung
N. Hubin
Neuhäuser
P. Pujet
Palla
Prato
R. Lenzen
Siebenmorgen
Stecklum
Swenson
Söderhjelm
T. Fusco
Teixeira
W. Brandner
Wilking
Wilking
Publication date: 1 January 2003
Publisher: 'EDP Sciences'
Doi

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.Comment: 4 pages, 2 figures postscrip