The changing ultraviolet spectrum of Herbig-Haro object No. 1

Details The changing ultraviolet spectrum of Herbig-Haro object No. 1 The changing ultraviolet spectrum of Herbig-Haro object No. 1

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984nascp2349..167b&link_type=abstract

In NASA. Goddard Space Flight Center Future of Ultraviolet Astronomy Based on Six Years of IUE Res. p 167-170 (SEE N85-20961 1

Astronomy and Astrophysics

Astronomy

Astronomical Models, Emission Spectra, Herbig-Haro Objects, Line Spectra, Ultraviolet Spectra, Iue, Spectrophotometry, Ultraviolet Astronomy

Scientific paper

IUE spectra of H-H1 taken in March 1982 and December 1983 show steady qualitative changes of the short wavelength emission line spectrum. Earlier IUE studies (in 1979 and 1980) had shown the typical "high excitation object" ultraviolet spectrum with the C IV 1550 and the C III] 1909 lines being very strong. These line fluxes have steadily decreased and are presently not detectable on a 4-1/2 hour exposure. While the spectrum looked very similar to that of H-H2 in 1980, it now gives more the impression of the spectrum of a low excitation H-H object with a possible presence of fluorescent lines from the H2 Lyman bands.

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