Intrinsic Reddening of Eta Carinae

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.

Access options

Rent or Buy article

Get time limited or full article access on ReadCube.

from$8.99

All prices are NET prices.

References

  1. 1

    Pagel, B. E. J., Nature, 221, 325 (1969).

  2. 2

    Aller, L. H., Proc. US Nat. Acad. Sci., 55, 671 (1966).

  3. 3

    Aller, L. H., and Dunham, jun., T., Astrophys. J., 146, 126 (1966).

  4. 4

    Wares, G. W., Aller, L. H., and Weston, E. B., Astron. J., 73, S208 (1968).

  5. 5

    Aller, L. H., in Wolf–Rayet Stars (edit. by Gebbie, K. B. and Thomas, B. N.), 203 (NBS Special Pub. 307 1968).

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Cite this article

PAGEL, B. Intrinsic Reddening of Eta Carinae. Nature 223, 727–728 (1969). https://doi.org/10.1038/223727a0

Download citation

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.