Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...283l..57g&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 283, Aug. 15, 1984, p. L57-L61.
Astronomy and Astrophysics
Astronomy
90
Infrared Astronomy, Pre-Main Sequence Stars, Stellar Envelopes, T Tauri Stars, Maximum Entropy Method, Spatial Resolution, Spectral Energy Distribution
Scientific paper
High spatial resolution images of the T Tauri star HL Tau were obtained at 1.6 microns and 2.2 microns. The original images as well as maximum entropy image reconstructions reveal a circumstellar envelope structure, similar at both wavelenghts, and extended along P.A. = 112 deg; the 10 percent width of the structure is 1.9 sec (300 AU at 160 pc). The extended structure is interpreted as light scattered toward earth by dust in a disk surrounding this young stellar object. Polarization measurements made at 2.2 microns support this hypothesis. The total solid particle mass is, at minimum, 5 x 10 to the -7th solar mass.
Capps Richard W.
Castelaz Michael
Grasdalen Gary L.
Strom Karen M.
Strom Stephen E.
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