Research ArticleASTRONOMY

First detection of equatorial dark dust lane in a protostellar disk at submillimeter wavelength

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Science Advances  19 Apr 2017:
Vol. 3, no. 4, e1602935
DOI: 10.1126/sciadv.1602935
  • Fig. 1 ALMA maps of the jet, envelope, and disk in the HH 212 system.

    (A) A composite image for the inner part of the HH 212 jet: blue represents the map of H2 + the 2.12-μm continuum, obtained with the Very Large Telescope (20), and green and red represent the SiO and CO maps, respectively, obtained with ALMA (21). Gray contours show the continuum map of the envelope/disk at 850 μm, obtained with ALMA at a resolution of ~0″.5 (14). Contours start at 3.125 mJy beam−1 with a step of 3.75 mJy beam−1. (B) A zoomed-in image to the center for the jet and envelope/disk. (C) A zoomed-in image to the center of the continuum at a resolution of ~0″.1. Contours start at 1.23 mJy beam−1 with a step of 0.62 mJy beam−1. (D) A zoomed-in image to the center of the continuum at a resolution of ~0″.02. Contours start at 0.29 mJy beam−1 with a step of 0.49 mJy beam−1. Asterisks mark the possible source position at α(2000) = 05h43m51s.4086, δ(2000) = −01°02′53″.147, obtained by comparing to the model in Fig. 3.

  • Fig. 2 Flux density (and corresponding brightness temperature) of the continuum cut along the dark lane.

    The vertical dashed line indicates the source position. The double-headed arrow marks the full-width at half maximum of the intensity profile.

  • Fig. 3 Simulated observed continuum emission at 850 μm derived from the model.

    Contour levels are the same as in Fig. 1D.

Supplementary Materials

  • Supplementary material for this article is available at http://advances.sciencemag.org/cgi/content/full/3/4/e1602935/DC1

    Supplementary Materials and Methods

    table S1. Observation logs.

    table S2. Correlator setup for cycle 1 project.

    table S3. Correlator setup for cycle 3 project.

    table S4. Calibrators and their flux densities.

    References (3436)

  • Supplementary Materials

    This PDF file includes:

    • Supplementary Materials and Methods
    • table S1. Observation logs.
    • table S2. Correlator setup for cycle 1 project.
    • table S3. Correlator setup for cycle 3 project.
    • table S4. Calibrators and their flux densities.
    • References (34–36)

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