期刊
ASTROPHYSICAL JOURNAL
卷 800, 期 1, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/0004-637X/800/1/5
关键词
circumstellar matter; planetary systems; stars: individual (HD 17848, HD 28355, HD 37484, HD 95086)
资金
- Marie Curie International Reintegration Grant [277116]
- NSF [DGE-1143953, AST-1313029]
- NASA grant [NNX11AF73G]
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1313029] Funding Source: National Science Foundation
- NASA [146473, NNX11AF73G] Funding Source: Federal RePORTER
We present our first results from a high-contrast imaging search for planetary mass companions around stars with gapped debris disks, as inferred from the stars' bright infrared excesses. For the six considered stars, we model the disks' unresolved infrared spectral energy distributions in order to derive the temperature and location of the disk components. With VLT/NaCo Apodizing Phase Plate coronagraphic L'-band imaging, we search for planetary mass companions that may be sculpting the disks. We detect neither disks nor companions in this sample, confirmed by comparing plausible point sources with archival data. In order to calculate our mass sensitivity limit, we revisit the stellar age estimates. One target, HD17848, at 540 +/- 100 Myr old is significantly older than previously estimated. We then discuss our high-contrast imaging results with respect to the disk properties.
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