VLT/NACO astrometry of the HR 8799 planetary system: L′-band observations of the three outer planets
<i>Context.<i/> HR 8799 is so far the only directly imaged multiple exoplanet system. The orbital configuration would, if better known, provide valuable insight into the formation and dynamical evolution of wide-orbit planetary systems.<i>Aims.<i/> We present data which add t...
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| Main Authors: | , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
15 March 2011
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| In: |
Astronomy and astrophysics
Year: 2011, Volume: 528, Pages: 1-4 |
| ISSN: | 1432-0746 |
| DOI: | 10.1051/0004-6361/201116493 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1051/0004-6361/201116493 Verlag, lizenzpflichtig, Volltext: https://www.aanda.org/articles/aa/abs/2011/04/aa16493-11/aa16493-11.html 
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| Author Notes: | C. Bergfors, W. Brandner, M. Janson, R. Köhler, and T. Henning |
| Summary: | <i>Context.<i/> HR 8799 is so far the only directly imaged multiple exoplanet system. The orbital configuration would, if better known, provide valuable insight into the formation and dynamical evolution of wide-orbit planetary systems.<i>Aims.<i/> We present data which add to the astrometric monitoring of the planets HR 8799 b, c and d. We investigate how well the two simple cases of (i) a circular orbit and (ii) a face-on orbit fit the astrometric data for HR 8799 d over a total time baseline of ~2 years.<i>Methods.<i/> The HR 8799 planetary system was observed in <i>L<i/>′-band with NACO at VLT.<i>Results.<i/> The results indicate that the orbit of HR 8799 d is inclined with respect to our line of sight, and suggest that the orbit is slightly eccentric or non-coplanar with the outer planets and debris disk. |
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| Item Description: | Gesehen am 17.03.2022 |
| Physical Description: | Online Resource |
| ISSN: | 1432-0746 |
| DOI: | 10.1051/0004-6361/201116493 |