Title: Near-Infrared Imaging Survey of Faint Companions around Young Dwarfs in the Pleiades Cluster
Author(s): Yoichi Itoh, Yumiko Oasa, Hitoshi Funayama, Masahiko Hayashi, Misato Fukagawa, Toshio Hashiguchi
Abstract:
We conducted a near-infrared imaging survey of 11 young dwarfs in the Pleiades cluster using the Subaru Telescope and the near-infrared coronagraph. We found 10 faint point sources, with magnitudes as faint as 20 mag in the K-band, around 7 dwarfs. Comparison with Spitzer archive images revealed that a pair of the faint sources around V 1171 Tau are very red in the infrared wavelengths, indicative of very low-mass young stellar objects. Alternatively, they may be distant galaxies. By comparing with the Hubble Space Telescope archive images, we found that HD 282952 and its nearby faint source do not share common proper motions, suggesting that they are not physically associated with each other.