Subarcsecond VLA maps of the disk and the jet in HL Tauri

Details Subarcsecond VLA maps of the disk and the jet in HL Tauri Subarcsecond VLA maps of the disk and the jet in HL Tauri

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...427l.103r&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 427, no. 2, p. L103-L106

Astronomy and Astrophysics

Astronomy

35

Astronomical Maps, Cosmic Dust, Disks (Shapes), Jet Flow, Pre-Main Sequence Stars, Radio Astronomy, Data Processing, Data Reduction, Imagery, Very Large Array (Vla)

Scientific paper

High-angular resolution (approximately 0.3 sec - 0.4 sec) VLA (Very Large Array) observations of HL Tau at 3.6 and 1.3 cm show extended structures associated with this young star that are strikingly different at each wavelength. While the structure observed at 3.6 cm is elongated approximately in the east-west direction, the 1.3 cm structure is elongated approximately in the north-south direction. We interpret these results to imply that while the 3.6 cm emission is dominated by free-free radiation from an ionized outflow, the 1.3 cm emission traces dust emission from a perpendicular, collimating disk. If our interpretation is correct, these VLA images represent the first subsecond images of both jet and disk in a young star.

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