Abstract
Although the 2175Å feature in the interstellar extinction curve is often attributed to absorption by small particles of graphite, the identification is not secure. Any further characterization of the carrier would be valuable. One question is whether the feature is polarized. Polarization properties in the 2175Å region put important constraints on the asphericity, optical anisotropy, and alignment of the carrier. Ultraviolet spectropolarimetric observations have now been reported for several bright reddened Galactic stars. These made use of the WUPPE experiment on the Astro-1 mission (Wolff, Clayton, & Meade 1993) and the Faint Object Spectrograph of the Hubble Space Telescope (Somerville et al. 1994a,b); the latter have somewhat higher spectral resolution and signal-to-noise. A polarization signature accompanying the 2175Å feature appears to be rare. Both the observations and the theoretical interpretation are discussed.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Carnochan, D. J. 1986, M. N. R. A. S., 219, 903.
Cayrel, R. and Schatzman, E. 1954, Ann. d’ap., 17, 555.
Clayton, G.C. et al. 1992, Ap. J. (Letters), 385, L53.
Draine, B.T. 1987, Princeton Observatory Preprint 213, Princeton University.
Draine; B.T. 1988, Ap. J., 333, 848.
Draine, B.T. 1989, in IAU Symposium 135, Interstellar Dust, eds. L. J. Allamandola and A. G. G. M. Tielens. (Dordrecht: Kluwer), p. 313.
Gehrels, T. 1974, A. J., 79, 590.
Greenberg, J.M. 1968, in Nebulae and Interstellar Matter, eds. B. M. Middlehurst and L. H. Aller, (Chicago: Univ. Chicago Press), p. 221.
Hoyle. F. and Wickramasghe, N.C. 1962, M. N. R. A. S., 124, 417.
Huffman, D.R. 1989, in IAU Symposium 135, Interstellar Dust, eds. L. J. Allamandola and A. G. G. M. Tielens, (Dordrecht: Kluwer), p. 329.
Kim, S.-H. and Martin, P.G. 1994, Ap. J., 431, 783.
Lorusso, G.F., Capozzi, V., Milani, P., Minafra, A., and Lojacono, D. 1993, Solid State Comm., 85, 729.
Martin, P.G. 1974, Ap. J., 187, 461.
Martin, P.G. 1994, in The Diffuse Interstellar Bands, eds. A. G. G. M. Tielens and T.P. Snow, (Dordrecht: Kluwer), this volume.
Mathis, J.S. 1994, in The Diffuse Interstellar Bands, eds. A. G. G. M. Tielens and T.P. Snow, (Dordrecht: Kluwer), this volume.
Somerville, W.B. et al. 1994a, Ap. J. (Letters), 427, L47.
Somerville, W.B. et al. 1994b, in preparation.
Stecher, T.P. and Donn. B.D. 1965, Ap. J., 142, 1681.
Voshchinnikov N.V. 1990. Sov. Astron. Letters, 16, 215.
Wickramasinghe, N.C. 1967, Interstellar Grains, (London: Chapman and Hall).
Witt, A.N. 1989, in IAU Symposium 135, Interstellar Dust, eds. L. J. Allamandola and A. G. G. M. Tielens, (Dordrecht: Kluwer), p. 87.
Witt, A.N., Petersohn, J.K., Holberg, J.B., Murthy, J., Dring, A., and Henry, R.C. 1993, Ap. J., 410, 714.
Wolff, M.J., Clayton, G.C., and Meade, M.R. 1993, Ap. J., 403, 722.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1995 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Martin, P.G. et al. (1995). Polarization of the 2175 Å Feature. In: Tielens, A.G.G.M., Snow, T.P. (eds) The Diffuse Interstellar Bands. Astrophysics and Space Science Library, vol 202. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0373-2_28
Download citation
DOI: https://doi.org/10.1007/978-94-011-0373-2_28
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-4167-6
Online ISBN: 978-94-011-0373-2
eBook Packages: Springer Book Archive