Bibcode
Velasco, S.
Referencia bibliográfica
Highlights of Spanish Astrophysics VIII, Proceedings of the XI Scientific Meeting of the Spanish Astronomical Society held on September 8-12, 2014, in Teruel, Spain, ISBN 978-84-606-8760-3. A. J. Cenarro, F. Figueras, C. Hernández-Monteagudo, J. Trujillo Bueno, and L. Valdivielso (eds.), p. 619-619
Fecha de publicación:
5
2015
Número de citas
1
Número de citas referidas
0
Descripción
We present first relevant results from our survey to search multiplicity
in T Tauri systems and its relation with disk presence and planet
formation on these young stars. This very high spatial resolution survey
is being developed with Lucky Imaging techniques using the instruments
FastCam and AOLI at the Observatorios de Canarias. Although still in an
initial phase, we have already studied some systems, such as the one
formed by the triplet LkHα 263, an edge-on disk and a close binary
pair (0.4 arcsec), and LkHα 262, an M0 star with an unresolved
companion. They have been long discussed to be bounded (Ducourant et al.
2005). Our new data, combined with previously available Adaptive Optics
near infrared images (Jayawardhana et al. 2002) have leaded us to the
following: a) there is orbital motion of the pair LkHα 263 AB and
the component C is comoving with it. b) the likely existence of a close
companion to LkHα 262. c) LkHα 262 and 263 are
gravitationally bounded, thus, this system is one of the few quintuple
pre-main sequence systems known till now. Besides the resolved edge-on
thick disk around LkHα 263 C, the SEDs developed by us show the
presence of disks around either 263 A, 263 B or both of them and also
around 262. A deeper study of this particular system can be seen in
Velasco et al. (2015).