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- Title
Intrinsic Reddening of Eta Carinae.
- Authors
PAGEL, B. E. J.
- Abstract
LAMBERT has pointed out a possible weakness in my derivation1 of the total colour excess of Eta Carinae on the basis of [FeII] lines measured from photoelectric spectral scans by Aller2, and has derived a higher value from a method which is undoubtedly sounder in principle. On the other hand, an inspection of Fig. 1 of my article1 suggests that the errors resulting from the assumption that the lines which I used can be represented by an excitation temperature are not very large. A similar conclusion can be drawn from Lambert's figure, in which the reddening relation that he derives from a comparison of emission lines with the same upper level is evidently not very different from a least-squares line through all the points, even if the departures from a Boltzmann population that he finds among certain individual levels are real.
- Publication
Nature, 1969, Vol 223, Issue 5207, p727
- ISSN
0028-0836
- Publication type
Article
- DOI
10.1038/223727a0