VLA imaging of a possible circumstellar disk around HL Tauri

Details VLA imaging of a possible circumstellar disk around HL Tauri VLA imaging of a possible circumstellar disk around HL Tauri

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...393l..29r&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 393, no. 1, July 1, 1992, p. L29-L31. Research supported by Unive

Astronomy and Astrophysics

Astrophysics

26

Protoplanets, Stellar Envelopes, T Tauri Stars, Very Large Array (Vla), Emission Spectra, Planetary Mass, Planetary Systems

Scientific paper

High-angular resolution (about 0.4 arcsec) VLA observations of HL Tauri at 1.3 cm reveal the existence of an elongated structure (about 1.4 x 0.6 arcsec, or about 200 x 80 AU at a distance of 140 pc) surrounding the star. The physical dimensions and the flux density of this source (2.9 +/- 0.4 mJy) suggest that the 1.3 cm emission arises from dust in a protoplanetary disk. However, the orientation of the major axis of the structure (position angle = 22 +/- 4 deg) with respect to the orientation of previously studied phenomena in the region does not allow a definitive determination of the nature of the object.

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