The low-mass diskless population of Corona Australis
/ Authors
B. L. Mart'i, L. Spezzi, B. Mer'in, M. Morales-Calder'on, H. Bouy, D. Barrado, Jochen Eisloffel Centro de Astrobiolog'ia, Villanueva de la Caada, Spain., ESA-Estec
and 12 more authors
Noordwijk, The Netherlands., H. S. Center, ESA-ESAC, Villanueva de la Cañada, Spitzer Science Center, Caltech, Pasadena, Usa, Thuringer Landessternwarte, Tautenburg, H Germany
/ Abstract
We combine published optical and near-infrared photometry to identify new low-mass candidate members in an area of about 0.64 deg 2 in Corona Australis with the S -parameter method. Five new candidate members of the region are selected. They have estimated ages between 3 and 15 Myr and masses between 0.05 and 0.15 M� . With Spitzer photometry we confirm that these objects are not surrounded by optically thick disks. However, one of them is found to display excess at 24 μm, thus suggesting it harbors a disk
Journal: Astronomy and Astrophysics