Discovery of an Inner Disk Component around HD 141569 A*

Show simple item record

dc.contributor.author Silverstone, Murray
dc.date.accessioned 2019-06-12T12:37:36Z
dc.date.available 2019-06-12T12:37:36Z
dc.date.copyright 2016
dc.date.issued 2016-02-20
dc.identifier.citation Konishi, M., et al. (2016): Discovery of an Inner Disk Component around HD 141569 A*. The Astronomical Journal Letters, 818(2). DOI: https://doi.org/10.3847/2041-8205/818/2/L23 en_US
dc.identifier.uri http://ir.ua.edu/handle/123456789/5727
dc.description.abstract We report the discovery of a scattering component around the HD 141569 A circumstellar debris system, interior to the previously known inner ring. The discovered inner disk component, obtained in broadband optical light with Hubble Space Telescope/Space Telescope Imaging Spectrograph coronagraphy, was imaged with an inner working angle of 0 ̋.25 and can be traced from 0 ̋.4 (~46 AU) to 1 ̋.0 (~116 AU) after deprojection using i = 55° The inner disk component is seen to forward scatter in a manner similar to the previously known rings, has a pericenter offset of ~6 AU, and break points where the slope of the surface brightness changes. It also has a spiral arm trailing in the same sense as other spiral arms and arcs seen at larger stellocentric distances. The inner disk spatially overlaps with the previously reported warm gas disk seen in thermal emission. We detect no point sources within 2 ̋ (~232 AU), in particular in the gap between the inner disk component and the inner ring. Our upper limit of 9 ± 3 M_j is augmented by a new dynamical limit on single planetary mass bodies in the gap between the inner disk component and the inner ring of 1 M_j, which is broadly consistent with previous estimates. en_US
dc.format.mimetype application/pdf en_US
dc.language English en_US
dc.publisher American Astronomical Society en_US
dc.subject Circumstellar matter en_US
dc.subject Stars imaging en_US
dc.subject Stars en_US
dc.title Discovery of an Inner Disk Component around HD 141569 A* en_US
dc.type text en_US
dc.rights.holder American Astronomical Society en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search DSpace


Browse

My Account