Other
Scientific paper
Nov 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aj.....96.1690l&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 96, Nov. 1988, p. 1690-1701.
Other
14
Continuous Radiation, Emission Spectra, Herbig-Haro Objects, Spatial Distribution, Ultraviolet Radiation, Charge Coupled Devices, H Alpha Line, Iue, Radiation Distribution, Shock Waves
Scientific paper
Using archival IUE data and "monochromatic" CCD images in the optical range, the authors compare the spatial distribution of ultraviolet and optical emission in Herbig-Haro objects. Specifically, they consider the objects HH 1, HH 2, HH 24, HH 32, HH 43, and HH 47. Spatial distributions have been studied in the UV lines C IV 1550, C III] 1909, C II] 2326, and Mg II 2800. They have been compared to the distributions of some optical lines. The distributions of the continuum emission in the short- and long-wavelength ranges of IUE have also been studied. The following results have been obtained: (1) For all six objects studied, the observed UV radiation really originates in the objects themselves. (2) As expected, the C IV and C III] emission regions are small. (3) The continuum in the IUE short-wavelength range always shows a distribution that is broader than that of any measured line emission in the ultraviolet or optical range. The continuum distribution in the IUE long-wavelength range, on the other hand, is quite narrow and comparable to the optical continuum distribution. This probably indicates that while in the optical and the long-wavelength IUE range the continuum is essentially a pure two-photon continuum, an additional continuum-formation mechanism (e.g., fluorescent H2 emission) is present in the short-wavelength range.
Bohm Karl-Heinz
Brugel Edward W.
Lee Myung Gyoon
Mateo Mario L.
Mundt Reinhard
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