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

Astrophysics, abstract
astro-ph/0304271

From: Gael Chauvin <Gael.Chauvin@obs.ujf-grenoble.fr>

Date: Tue, 15 Apr 2003 08:20:53 GMT   (101kb)

Authors:
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

Comments: 4 pages, 2 figures postscript

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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