Speckle imaging excludes low-mass companions orbiting the exoplanet host star trappist-1
Resource type
Authors/contributors
- Howell, Steve B (Author)
- Everett, Mark E (Author)
- Horch, Elliott P (Author)
- Winters, Jennifer G (Author)
- Hirsch, Lea A (Author)
- Nusdeo, Dan (Author)
- Scott, Nicholas J (Author)
Title
Speckle imaging excludes low-mass companions orbiting the exoplanet host star trappist-1
Abstract
We have obtained the highest-resolution images available of TRAPPIST-1 using the Gemini-South telescope and our speckle imaging camera. Observing at 692 and 883 nm, we reached the diffraction limit of the telescope providing a best resolution of 27 mas or, at the distance of TRAPPIST-1, a spatial resolution of 0.32 au. Our imaging of the star extends from 0.32 to 14.5 au. We show that to a high confidence level, we can exclude all possible stellar and brown dwarf companions, indicating that TRAPPIST-1 is a single star. © 2016. The American Astronomical Society. All rights reserved.
Publication
The Astrophysical Journal
Date
2016
Volume
829
Issue
1
Journal Abbr
Astrophys. J. Lett.
Citation Key
pop00025
ISSN
20418205 (ISSN)
Language
English
Extra
45 citations (Crossref) [2023-10-31]
Citation Key Alias: lens.org/135-678-895-243-534
tex.type: [object Object]
Citation
Howell, S. B., Everett, M. E., Horch, E. P., Winters, J. G., Hirsch, L. A., Nusdeo, D., & Scott, N. J. (2016). Speckle imaging excludes low-mass companions orbiting the exoplanet host star trappist-1. The Astrophysical Journal, 829(1). https://doi.org/10.3847/2041-8205/829/1/L2
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