Abstract
A candidate ≲3 M Jup extrasolar planet was recently imaged by Kalas etal. using Hubble Space Telescope/Advanced Camera for Surveys and Keck II at 127 (96AU) separation from the nearby (d = 7.7 pc) young (200 Myr) A2V star Fomalhaut. Here, we report results from M-band (4.8 μm) imaging of Fomalhaut on 2006 December 5 using the Clio IR imager on the 6.5 m MMT with the adaptive secondary mirror. Our images are sensitive to giant planets at orbital radii comparable to the outer solar system (10-40AU). Comparing our 5σ M-band photometric limits to theoretical evolutionary tracks for substellar objects, our results rule out the existence of planets with masses >2 M Jup from 13 to 40AU and objects >13 M Jup from 8 to 40AU.
Original language | English (US) |
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Pages (from-to) | 1928-1933 |
Number of pages | 6 |
Journal | Astrophysical Journal |
Volume | 697 |
Issue number | 2 |
DOIs | |
State | Published - 2009 |
Keywords
- Astrometry
- Instrumentation: adaptive optics
- Planetary systems
- Stars: individual (Fomalhaut)
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science