The bow shock and Mach disk of HH 111V

Details The bow shock and Mach disk of HH 111V The bow shock and Mach disk of HH 111V

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...410..764m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 410, no. 2, p. 764-776.

Astronomy and Astrophysics

Astrophysics

56

Bow Waves, Herbig-Haro Objects, Shock Waves, Astronomical Models, Emission Spectra, Interstellar Extinction, Stellar Magnetic Fields

Scientific paper

Spatially resolved H-alpha and forbidden S II 6716, 6731 wavelength line profiles are presented for the working-surface region of the Herbig-Haro object HH 111 V, spatially and kinematically separating the Mach disk emission from that of the bow shock. Detailed measurements of the electron density as a function of position and velocity across the bow shock, in conjunction with new bow shock emission models, show that an ambient magnetic field of about 30 micro-Gauss inhibits the compression of the postshock gas. The models also indicate that the magnetic field also contributes to extending the cooling distance behind the shock to resolvable scales.

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