SIMBAD references

2016ApJ...818L..15W - Astrophys. J., 818, L15 (2016/February-2)

The PDS 66 circumstellar disk as seen in polarized light with the Gemini planet imager.

WOLFF S.G., PERRIN M., MILLAR-BLANCHAER M.A., NIELSEN E.L., WANG J., CARDWELL A., CHILCOTE J., DONG R., DRAPER Z.H., DUCHENE G., FITZGERALD M.P., GOODSELL S.J., GRADY C.A., GRAHAM J.R., GREENBAUM A.Z., HARTUNG M., HIBON P., HINES D.C., HUNG L.-W., KALAS P., MACINTOSH B., MARCHIS F., MAROIS C., PUEYO L., RANTAKYRO F.T., SCHNEIDER G., SIVARAMAKRISHNAN A. and WIKTOROWICZ S.J.

Abstract (from CDS):

We present H- and K-band imaging polarimetry for the PDS 66 circumstellar disk obtained during the commissioning of the Gemini Planet Imager (GPI). Polarization images reveal a clear detection of the disk in to the 0".12 inner working angle (IWA) in the H band, almost three times closer to the star than the previous Hubble Space Telescope (HST) observations with NICMOS and STIS (0".35 effective IWA). The centro-symmetric polarization vectors confirm that the bright inner disk detection is due to circumstellar scattered light. A more diffuse disk extends to a bright outer ring centered at 80 AU. We discuss several physical mechanisms capable of producing the observed ring + gap structure. GPI data confirm enhanced scattering on the east side of the disk that is inferred to be nearer to us. We also detect a lateral asymmetry in the south possibly due to shadowing from material within the IWA. This likely corresponds to a temporally variable azimuthal asymmetry observed in HST/STIS coronagraphic imaging.

Abstract Copyright:

Journal keyword(s): instrumentation: adaptive optics - protoplanetary disks - stars: individual: PDS 66 - techniques: high angular resolution - techniques: polarimetric

Simbad objects: 6

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2019.12.14-19:54:57

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