Published in
American Astronomical Society, Astrophysical Journal, 2(795), p. 133, 2014
DOI: 10.1088/0004-637x/795/2/133
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- [discovery.dundee.ac.uk]
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- [www.researchgate.net] | PDF
- [arxiv.org] | PDF
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Deep Thermal Infrared Imaging of HR 8799 bcde: New Atmospheric Constraints and Limits on a Fifth Planet
Journal article published in 2014 by
Thayne Currie 
,
Adam Burrows ,
Julien H. Girard ,
Ryan Cloutier,
Misato Fukagawa ,
Satoko Sorahana,
Marc Kuchner,
Scott J. Kenyon ,
Nikku Madhusudhan,
Yoichi Itoh,
Ray Jayawardhana ,
Soko Matsumura,
Tae-Soo Pyo
,
Adam Burrows ,
Julien H. Girard ,
Ryan Cloutier,
Misato Fukagawa ,
Satoko Sorahana,
Marc Kuchner,
Scott J. Kenyon ,
Nikku Madhusudhan,
Yoichi Itoh,
Ray Jayawardhana ,
Soko Matsumura,
Tae-Soo Pyo
This paper is made freely available by the publisher.
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Abstract
We present new $L^\prime$ (3.8 $μ m$) and Br-$α$ (4.05 $μ m$) data and reprocessed archival $L^\prime$ data for the young, planet-hosting star HR 8799 obtained with Keck/NIRC2, VLT/NaCo and Subaru/IRCS. We detect all four HR 8799 planets in each dataset at a moderate to high signal-to-noise (SNR $\gtrsim$ 6-15). We fail to identify a fifth planet, "HR 8799 f", at $r$ $