Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2011-12-14
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
accepted by ApJ
Scientific paper
We announce the identification of a proper motion companion to the star HII 1348, a K5V member of the Pleiades open cluster. The existence of a faint point source 1.1arcsec away from HII 1348 was previously known from adaptive optics imaging by Bouvier et al. However, because of a high likelihood of background star contamination and in the absence of follow-up astrometry, Bouvier et al. tentatively concluded that the candidate companion was not physically associated with HII 1348. We establish the proper motion association of the pair from adaptive optics imaging with the Palomar 5m telescope. Adaptive optics spectroscopy with the integral field spectrograph OSIRIS on the Keck 10m telescope reveals that the companion has a spectral type of M8\pm1. According to substellar evolution models, the M8 spectral type resides within the substellar mass regime at the age of the Pleiades. The primary itself is a known double-lined spectroscopic binary, which makes the resolved companion, HII 1348B, the least massive and widest component of this hierarchical triple system and the first substellar companion to a stellar primary in the Pleiades.
Geißler Kerstin
Hillenbrand Lynne A.
Larkin James E.
McElwain Michael
Metchev Stanimir A.
No associations
LandOfFree
A Substellar Common Proper Motion Companion to the Pleiad HII 1348 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Substellar Common Proper Motion Companion to the Pleiad HII 1348, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Substellar Common Proper Motion Companion to the Pleiad HII 1348 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-227396