High Resolution Millimeter Wave Images of HL Tau Reveal a Companion in the Disk

Details High Resolution Millimeter Wave Images of HL Tau Reveal a Companion in the Disk High Resolution Millimeter Wave Images of HL Tau Reveal a Companion in the Disk

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004iaus..213...59w&link_type=abstract

Bioastronomy 2002: Life Among the Stars, Proceedings of IAU Symposium #213. Edited by R. Norris, and F. Stootman. San Francisco:

Astronomy and Astrophysics

Astronomy

7

Scientific paper

An image of the disk of the TTauri star HL Tau at 1.4 mm wavelength at an angular resolution of 0.25 arcsec shows a secondary peak in the disk at a radius of 70 AU and position angle of -40°. This secondary peak is evidently a small unresolved nebulosity which may surround a star or planet or may not yet have formed such a body. The nebulosity could have formed as a result of a density wave instability in the disk.

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