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1994PASP..106.1271B - Publ. Astron. Soc. Pac., 106, 1271-1275 (1994/December-0)
The gas-phase iron abundance in Herbig-Haro objects.
BECK-WINCHATZ B., BOHM K.H. and NORIEGA-CRESPO A.
Abstract (from CDS):
We have determined the abundance ratios using statistical equilibrium calculations for the ions Fe+, S+, and O+. (These are the most abundant ions of the elements in question.) Abundance determinations have been made using homogeneous models of the HH objects for which electron temperatures and densities have been determined observationally from forbidden line ratios.
The results show that the Fe/S ratio in the objects HH1, HH7, HH11 and HH43A agrees very well with the population I abundance ratio. Only Burnham's Nebula (HH255) shows an Fe/S ratio which is about 3 times lower indicating a shock wave history which is quite different from that of the other HH objects.
Abstract Copyright: ∼
Journal keyword(s):
Nomenclature: HH NNN No. 255
Simbad objects: 5
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