FIRST IMAGES of DEBRIS DISKS AROUND TWA 7, TWA 25, HD 35650, and HD 377

Élodie Choquet, Marshall D. Perrin, Christine H. Chen, Rémi Soummer, Laurent Pueyo, James B. Hagan, Elena Gofas-Salas, Abhijith Rajan, David A. Golimowski, Dean C. Hines, Glenn Schneider, Johan Mazoyer, Jean Charles Augereau, John Debes, Christopher C. Stark, Schuyler Wolff, Mamadou N'Diaye, Kevin Hsiao

Research output: Contribution to journalArticlepeer-review

50 Scopus citations

Abstract

We present the first images of four debris disks observed in scattered light around the young (4-250 Myr old) M dwarfs TWA 7 and TWA 25, the K6 star HD 35650, and the G2 star HD 377. We obtained these images by reprocessing archival Hubble Space Telescope NICMOS coronagraph data with modern post-processing techniques as part of the Archival Legacy Investigation of Circumstellar Environments program. All four disks appear faint and compact compared with other debris disks resolved in scattered light. The disks around TWA 25, HD 35650, and HD 377 appear very inclined, while TWA 7's disk is viewed nearly face-on. The surface brightness of HD 35650's disk is strongly asymmetric. These new detections raise the number of disks resolved in scattered light around M and late-K stars from one (the AU Mic system) to four. This new sample of resolved disks enables comparative studies of heretofore scarce debris disks around low-mass stars relative to solar-type stars.

Original languageEnglish (US)
Article numberL2
JournalAstrophysical Journal Letters
Volume817
Issue number1
DOIs
StatePublished - Jan 20 2016

Keywords

  • circumstellar matter
  • stars: individual (TWA 7, TWA 25, HD 35650, HD 377)
  • techniques: image processing

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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