Keck NIRC Observations of Planetary-Mass Candidate Members in the σ Orionis Open Cluster
We present K-band photometry and low-resolution near-infrared spectroscopy from 1.44 to 2.45 μm of isolated planetary-mass candidate members in the σ Orionis cluster found by Zapatero Osorio et al. The new data have been obtained with NIRC at the Keck I telescope. All of our targets, except for one, are confirmed as likely cluster members. Hence
Martín, E. L. et al.
Fecha de publicación:
9
2001