Investigating the young Solar System analog HD95086
G. Chauvin, R. Gratton, M. Bonnefoy, A.-M. Lagrange, J. de Boer, A., Vigan, H. Beust, C. Lazzoni, A. Boccaletti, R. Galicher, S. Desidera, P., Delorme, M. Keppler, J. Lannier, A.-L. Maire, D. Mesa, N. Meunier, Q. Kral,, T. Henning, F. Menard, A. Moor, H. Avenhaus, A. Bazzon

TL;DR
This study characterizes the physical and orbital properties of the HD95086 planetary system, including the directly imaged planet HD95086b and the cold debris belt, using multi-instrument observations over several years.
Contribution
First direct imaging and spectral analysis of HD95086b, combined with radial velocity monitoring and debris belt imaging, providing new insights into this young Solar System analog.
Findings
HD95086b is resolved in J-band with a dusty L7-L9 dwarf spectrum.
No additional giant planets detected within 3au from radial velocity data.
The debris belt is imaged between 100 and 300au, consistent with ALMA observations.
Abstract
HD95086 (A8V, 17Myr) hosts a rare planetary system for which a multi-belt debris disk and a giant planet of 4-5MJup have been directly imaged. Our study aims to characterize the physical and orbital properties of HD95086b, search for additional planets at short and wide orbits and image the cold outer debris belt in scattered light. We used HARPS at the ESO 3.6m telescope to monitor the radial velocity of HD95086 over 2 years and investigate the existence of giant planets at less than 3au orbital distance. With the IRDIS dual-band imager and the IFS integral field spectrograph of SPHERE at VLT, we imaged the faint circumstellar environment beyond 10au at six epochs between 2015 and 2017. We do not detect additional giant planets around HD95086. We identified the nature (bound companion or background contaminant) of all point-like sources detected in the IRDIS field of view. None of them…
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Taxonomy
TopicsStellar, planetary, and galactic studies · Astrophysics and Star Formation Studies · Astronomy and Astrophysical Research
