An optical/near-infrared investigation of HD 100546 b with the Gemini Planet Imager and MagAO

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DOIResolve DOI: http://doi.org/10.3847/1538-3881/aa6cae
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TypeArticle
Journal titleThe Astronomical Journal
ISSN0004-6256
1538-3881
Volume153
Issue6
Pages# of pages: 9
AbstractWe present H band spectroscopic and Hα photometric observations of HD 100546 obtained with the Gemini Planet Imager and the Magellan Visible AO camera. We detect H band emission at the location of the protoplanet HD 100546 b, but show that the choice of data processing parameters strongly affects the morphology of this source. It appears point-like in some aggressive reductions, but rejoins an extended disk structure in the majority of the others. Furthermore, we demonstrate that this emission appears stationary on a timescale of 4.6 years, inconsistent at the 2σ level with a Keplerian clockwise orbit at 59 au in the disk plane. The H band spectrum of the emission is inconsistent with any type of low effective temperature object or accreting protoplanetary disk. It strongly suggests a scattered-light origin, as this is consistent with the spectrum of the star and the spectra extracted at other locations in the disk.
Publication date
PublisherAmerican Astronomical Society
IOP
LanguageEnglish
AffiliationHerzberg Astronomy and Astrophysics; National Research Council Canada
Peer reviewedYes
NPARC number23002599
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Record identifier4c586a51-a5cf-432c-8258-1122f858f411
Record created2017-12-05
Record modified2017-12-05
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