Two planets straddling the habitable zone of the nearby K dwarf Gl 414A

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Author
Dedrick, C.M.
Fulton, B.J.
Knutson, H.A.
Howard, A.W.
Beatty, T.G.
Cargile, P.A.
Gaudi, B.S.
Hirsch, L.A.
Kuhn, R.B.
Lund, M.B.
Affiliation
Department of Astronomy and Steward Observatory, University of Arizona
Issue Date
2021

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Publisher
American Astronomical Society
Citation
Dedrick, C. M., Fulton, B. J., Knutson, H. A., Howard, A. W., Beatty, T. G., Cargile, P. A., ... & Stevens, D. J. (2021). Two Planets Straddling the Habitable Zone of the Nearby K Dwarf Gl 414A. The Astronomical Journal, 161(2), 86.
Journal
Astronomical Journal
Rights
Copyright © 2021 The American Astronomical Society. All rights reserved.
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This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
Abstract
We present the discovery of two planets orbiting the nearby (D = 11.9 pc) K7 dwarf Gl 414A. Gl 414A b is a sub- Neptune mass planet with = Mb sin ib 7.60+2.44-2.19 M⊗ and a semimajor axis of 0.23 ± 0.01 au. Gl 414A c is a sub-Saturn mass planet with = Mc sin ic 53.83+9.18-8.58M⊗ and a semimajor axis of 1.43 ± 0.06 au. We jointly analyzed radial velocity data from Keck/HIRES and the Automated Planet Finder at Lick Observatory, as well as photometric data from KELT, to detect the two planets and two additional signals related to the rotationally modulated activity and the long-term magnetic activity cycle of the star. The outer planet in this system may be a potential candidate for future direct-imaging missions. © 2021. The American Astronomical Society. All rights reserved.
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Immediate access
ISSN
0004-6256
DOI
10.3847/1538-3881/abd0ef
Version
Final published version
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