Huélamo, N.; Bouy, H.; Sterzik, M.; Pantin, E.; Martín, E. L.
Referencia bibliográfica
Astronomische Nachrichten, Vol.326, Issue 10, p.1022-1023
Fecha de publicación:
12
2005
Número de citas
0
Número de citas referidas
0
Descripción
We present mid-IR observations of a sample of very low-mass stars and
brown dwarfs in the Upper Scorpius association. The main goal of these
observations is to derive the disk frequency and the disk properties of
the sample in order to shed light on brown dwarf formation theories. The
observations have been performed with VISIR at the Very Large Telescope
(VLT, Paranal). A total of ten targets were observed and six were
detected. In this paper we show preliminary results for two of them:
DENIS-PJ160334 and DENIS-PJ161939. While the former shows mid-IR fluxes
consistent with pure photospheric emission, the latter displays strong
mid-IR excesses which are probably related with a circumstellar disk.
Based on observations collected at ESO/VLT (Paranal) under program ID
075.C-0148(A)