The nature of the optical nebulosity surrounding the star RNO 91 in the L 43 dark cloud

Details The nature of the optical nebulosity surrounding the star RNO 91 in the L 43 dark cloud The nature of the optical nebulosity surrounding the star RNO 91 in the L 43 dark cloud

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.262..306s&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 262, no. 2, p. 306-312.

Astronomy and Astrophysics

Astronomy

7

Molecular Clouds, Reflection Nebulae, Stellar Envelopes, T Tauri Stars, Optical Polarization, Star Formation

Scientific paper

Polarization maps of the L43/RNO 91 nebulosity show that it is a large-scale reflection nebula illuminated by the T Tauri star RNO 91. The highly structured nebulosity within 40 arcsec of the central illuminator, which includes knots and a possible jet, is also seen solely by reflected light, and we have no evidence for the presence of emission-line features such as Herbig-Haro objects and stellar jets. We find evidence for a small-scale circumstellar disc of diameter no larger than 1200 AU and possibly as small as 160 AU, or even less, which we believe has collimated the outflow leading to the visible nebula. We speculate on the cause of the lack of alignment between the optical and molecular features.

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