CONSTRAINING THE MOVEMENT OF THE SPIRAL FEATURES AND THE LOCATIONS OF PLANETARY BODIES WITHIN THE AB AUR SYSTEM
AuthorLomax, Jamie R.
Grady, Carol A.
McElwain, Michael W.
Okamoto, Yoshiko K.
Brandt, Timothy D.
Carson, Joseph C.
Hayashi, Saeko S.
Hodapp, K. W.
Knapp, G. R.
Takahashi, Yasuhiro H.
Turner, Edwin L.
AffiliationUniv Arizona, Steward Observ
stars: individual (AB Aur)
stars: pre-main sequence
MetadataShow full item record
PublisherIOP PUBLISHING LTD
CitationCONSTRAINING THE MOVEMENT OF THE SPIRAL FEATURES AND THE LOCATIONS OF PLANETARY BODIES WITHIN THE AB AUR SYSTEM 2016, 828 (1):2 The Astrophysical Journal
JournalThe Astrophysical Journal
Rights© 2016. The American Astronomical Society. All rights reserved.
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at email@example.com.
AbstractWe 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.
VersionFinal published version
SponsorsNASA Origins of Solar System program [NNX13AK17G, RTOP 12-OSS12-0045, NNG13PB64P]; MEXT Japan; Mitsubishi Foundation; [NSF-AST 1009203]; ;