Ultraviolet continuum and H2 fluorescent emission in Herbig-Haro objects 43 and 47

Details Ultraviolet continuum and H2 fluorescent emission in Herbig-Haro objects 43 and 47 Ultraviolet continuum and H2 fluorescent emission in Herbig-Haro objects 43 and 47

May 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...268l..37s&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 268, May 1, 1983, p. L37-L40.

Astronomy and Astrophysics

Astrophysics

53

Continuous Spectra, Fluorescence, H Lines, Herbig-Haro Objects, Stellar Spectra, Ultraviolet Spectra, Electron Transitions, Emission Spectra, Iue, Lyman Alpha Radiation, Molecular Excitation, Shock Wave Interaction, Ultraviolet Absorption

Scientific paper

IUE short wavelength spectra are presented for the low excitation Herbig-Haro objects HH 43 and HH 47. In the former, several emission lines in the Lyman band of H2 from an excited state are observed which are due to fluorescence from the H Ly-alpha line pumping a lower state (that is in turn excited by a low-velocity shock wave). No evidence of highly ionized gas emission is found in the UV spectra, and both objects exhibit a UV continuum which peaks in the vicinity of 1500 A and is probably caused by H two-photon emission enhanced by low velocity shock collisional excitation.

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