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CONSTRAINING THE MOVEMENT OF THE SPIRAL FEATURES AND THE LOCATIONS OF PLANETARY BODIES WITHIN THE AB AUR SYSTEM
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Number of Authors: 57
2016 (English)In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 828, no 1, 2Article in journal (Refereed) Published
Abstract [en]

We present a new analysis of multi-epoch, H-band, scattered light images of the AB Aur system. We use a Monte Carlo radiative transfer code to simultaneously model the system's spectral energy distribution (SED) and H-band polarized intensity (PI) imagery. We find that a disk-dominated model, as opposed to one that is envelope-dominated, can plausibly reproduce AB Aur's SED and near-IR imagery. This is consistent with previous modeling attempts presented in the literature and supports the idea that at least a subset of AB Aur's spirals originate within the disk. In light of this, we also analyzed the movement of spiral structures in multi-epoch H-band total light and PI imagery of the disk. We detect no significant rotation or change in spatial location of the spiral structures in these data, which span a 5.8-year baseline. If such structures are caused by disk-planet interactions, the lack of observed rotation constrains the location of the orbit of planetary perturbers to be >47 au.

Place, publisher, year, edition, pages
2016. Vol. 828, no 1, 2
Keyword [en]
planet-disk interactions, planetary systems, protoplanetary disks, radiative transfer, stars: individual (AB Aur), stars: pre-main sequence
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:su:diva-135963DOI: 10.3847/0004-637X/828/1/2ISI: 000386894900002OAI: oai:DiVA.org:su-135963DiVA: diva2:1050938
Available from: 2016-11-30 Created: 2016-11-28 Last updated: 2016-12-01Bibliographically approved

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Janson, Markus
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