Searching for planets in holey debris disks with the Apodizing Phase Plate

Tiffany Meshkat, Vanessa P. Bailey, Kate Y.L. Su, Matthew A. Kenworthy, Eric E. Mamajek, Philip M. Hinz, Paul S. Smith

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


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, HD 17848, 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.

Original languageEnglish (US)
Article number5
JournalAstrophysical Journal Letters
Issue number1
StatePublished - Feb 10 2015


  • circumstellar matter
  • planetary systems
  • stars: individual (HD 17848, HD28355, HD37484, HD95086)

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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