The Inner Envelope and Disk of L1527 Revealed: Gemini L'-band Scattered Light Imaging - Astrophysics > Astrophysics of GalaxiesReportar como inadecuado




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Abstract: We present high-resolution L-band imaging of the inner scattered lightstructure of Class 0 protostar L1527 IRS IRAS 04368+2557 taken with theGemini North telescope. The central point-source like feature seen in SpitzerSpace Telescope IRAC images is resolved in the Gemini image into a compactbipolar structure with a narrow dark lane in the center. Two scattered lightlobes are extended ~1.8- 200 AU perpendicular to the direction of the outflowand ~2.5- 350 AU along the outflow axis; the narrow dark lane between thescattered light lobes is ~0.45- 60 AU thick. The observations are consistentwith our initial modeling of a bright inner cavity separated by a dark lane dueto extinction along the line of sight of the central protostar by the diskTobin et al. 2008. The bright, compact scattered light might be due tocomplex inner structure generated by the outflow, as suggested in our firstpaper, or it may more likely be the upper layers of the disk forming frominfalling matter.



Autor: John J. Tobin, Lee Hartmann, Laurent Loinard

Fuente: https://arxiv.org/







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