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- W1974564311 abstract "view Abstract Citations (56) References (31) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Observations of Entrainment and Time Variability in the HH 47 Jet Hartigan, Patrick ; Morse, Jon A. ; Heathcote, Steve ; Cecil, Gerald Abstract We present new Fabry-Perot images of the HH 47 jet that show the first clear evidence for entrainment in a jet from a young star. The material in the jet moves faster down the axis of the flow and slower at the edges, similar to viscous flow in a pipe. The higher excitation lines occur along the edges of the jet, as expected if entrainment accelerates and heats the ambient material. We confirm previous observations of multiple bow shocks in this system. Together, time variability and entrainment produce much of the observed shock-excited gas in this object. Our data show that the 'wiggles' along the jet are not caused by jet material tied to a spiraling magnetic field, but instead result from time variability, variable ejection angles, or inhomogeneities in the flow. The gas entrained in the HH 47 jet may be atomic; our results do not provide direct evidence that stellar jets drive molecular outflows. Publication: The Astrophysical Journal Pub Date: September 1993 DOI: 10.1086/187011 Bibcode: 1993ApJ...414L.121H Keywords: Early Stars; Herbig-Haro Objects; Jet Flow; Molecular Flow; Bow Waves; Shock Waves; Viscous Flow; Astrophysics; ISM: KINEMATICS AND DYNAMICS; STARS: INDIVIDUAL ALPHANUMERIC: HH 46/47; STARS: PRE--MAIN-SEQUENCE; SHOCK WAVES full text sources ADS | data products SIMBAD (5)" @default.
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- W1974564311 date "1993-09-01" @default.
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- W1974564311 title "Observations of entrainment and time variability in the HH 47 jet" @default.
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