Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...235..395m&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 235, no. 1-2, Aug. 1990, p. 395-402.
Astronomy and Astrophysics
Astrophysics
2
Astronomical Spectroscopy, H Ii Regions, Herbig-Haro Objects, Pre-Main Sequence Stars, Shock Waves, Bows, Jet Flow, Stellar Models, Stellar Winds, T Tauri Stars
Scientific paper
Stepped multislit observations of forbidden O III 5007 A emission line profiles of the Herbig-Haro-like object M 16-HH1 were carried out with the Manchester echelle spectrometer on the Isaac Newton telescope, in order to measure the motions within M 16-HH1 and its close vicinity. In addition, direct images of the field were obtained through filters centered on several nebular emission lines. A sharp bright ridge out to a heliocentric radial velocity of +170 km/sec was found to occur in the positional-velocity arrays over M 16-HH1, associated with a fainter filamentary region of high speed gas at intermediate radial velocities. A jet/bow shock mechanism is considered to be the feasible explanation for the generation of these localized motions.
Meaburn John
Whitehead M. J.
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