Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...412l..43g&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 412, no. 1, p. L43-L46.
Astronomy and Astrophysics
Astrophysics
15
Binary Stars, Emission Spectra, H Alpha Line, Plasma Jets, Accretion Disks, Nebulae, Space Observations (From Earth), Stellar Mass Accretion
Scientific paper
Subarcsecond spatial resolution images in the forbidden S II and forbidden N II + H-alpha emission lines of the T Tauri star (TTS) CW Tau are presented. It is shown that CW Tau has a jet that extends up to 2.2 arcsec (300 AU) from the star in the direction P.A. = 144 deg. The jet emits strongly in forbidden S II, and it is already collimated at 1.3 arcsec (176 AU) from the star. The images also indicate that CW Tau is extended in the east-west direction and that the jet is slightly shifted to the east. This suggests that CW Tau may be a binary with the two components separated 0.20 arcsec (28 AU). The observations are compared with the theoretical models proposed for the production of forbidden line emission regions and protostellar jets.
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