NACO polarimetric differential imaging of TW Hya. A sharp look at the closest T Tauri disk

D. Apai, I. Pascucci, W. Brandner, Th Henning, R. Lenzen, D. E. Potter, A. M. Lagrange, G. Rousset

Research output: Contribution to journalArticle

51 Scopus citations

Abstract

We present high-contrast imaging data on the disk of the classical T Tauri star TW Hya. The images were obtained through the polarimetric differential imaging technique with the adaptive optics system NACO. Our commissioning data show the presence of polarized disk emission between 0.1″ and 1.4″ form the star. We derive the first Ks-band radial polarized intensity distribution. We show that the polarized intensity compares well to shorter wavelengths surface brightness observations and confirm the previously reported gradual slope change around 0.8″. These results show the potential of the new polarimetric differential imaging technique at 8 m-class telescopes to map the inner regions of protoplanetary disks.

Original languageEnglish (US)
Pages (from-to)671-676
Number of pages6
JournalAstronomy and astrophysics
Volume415
Issue number2
DOIs
StatePublished - Feb 2004
Externally publishedYes

Keywords

  • Stars: circumstellar matter
  • Stars: individual: TW Hya
  • Stars: planetary systems: protoplanetary disks
  • Techniques: polarimetric

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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