Hostname: page-component-cd9895bd7-8ctnn Total loading time: 0 Render date: 2024-12-25T17:22:30.407Z Has data issue: false hasContentIssue false

The production of dust in the Magellanic Clouds

Published online by Cambridge University Press:  01 July 2008

G. C. Sloan*
Affiliation:
Department of Astronomy, Cornell University, 108 Space Sciences, Ithaca, NY 14853-6801, USA email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The sensitivity of the Infrared Spectrograph on the Spitzer Space Telescope has enabled detailed surveys of mass-losing stars in the Large and Small Magellanic Clouds. Comparisons of samples from these galaxies and the Milky Way reveal how the dust produced by evolved stars depends on the metallicity of the host environment. Oxygen-rich stars show several trends with metallicity. In more metal-poor environments, fewer of them show dust excesses, the circumstellar SiO absorption grows weaker, the quantity of silicate dust decreases, and alumina dust grows rare. As carbon stars grow more metal-poor, the amount of circumstellar acetylene gas increases, while the amount of trace dust elements like SiC and MgS decreases. However, there is little dependence on metallicity in the amount of amorphous carbon dust produced by carbon stars, because they produce the carbon needed to make dust themselves. As galaxies grow more metal-poor, the composition of the dust they produce should grow more carbon rich.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2009

References

Blanco, B. M., Blanco, V. M., & McCarthy, M. F. 1978, Nature, 271, 638CrossRefGoogle Scholar
Blanco, V. M., Blanco, B. M., & McCarthy, M. F. 1980, ApJ, 242, 938CrossRefGoogle Scholar
Egan, M. P. & Sloan, G. C. 2001, ApJ, 558, 165CrossRefGoogle Scholar
Engelbracht, C. W., Gordon, K. D., Rieke, G. H., Werner, M. W., Dale, D. A., & Latter, W. B. 2005, ApJ, 628, 29CrossRefGoogle Scholar
Galliano, F., Madden, S. C., Jones, A. P., Wilson, C. D., & Bernard, J.-P. 2005, A&A, 434, 867Google Scholar
Galliano, F., Dwek, E., & Chanial, P. 2008, ApJ, 672, 214CrossRefGoogle Scholar
Gordon, K. & Clayton, G. C. 1998, ApJ, 500, 816CrossRefGoogle Scholar
Gordon, K. D., Engelbracht, C. W., Rieke, G. H., Misselt, K. A., Smith, J.-D. T., & Kennicutt, R. C. Jr., 2008, ApJ, 682, 336CrossRefGoogle Scholar
Groenewegen, M. A. T., Wood, P. R., Sloan, G. C., et al. 2007, MNRAS, 376, 313CrossRefGoogle Scholar
Heras, A. M., Shipman, R. F., Price, S. D., et al. 2002, A&A, 394, 539Google Scholar
Houck, J. R., Roellig, T. L., van Cleve, J., et al. 2004, ApJS, 154, 18CrossRefGoogle Scholar
Lagadec, E., Zijlstra, A. A., Sloan, G. C., et al. 2007, MNRAS, 376, 1270CrossRefGoogle Scholar
Lagadec, E. & Zijlstra, A. A. 2008, MNRAS, 390, L59CrossRefGoogle Scholar
Lebouteiller, V., Bernard-Salas, J., Brandl, B., Whelan, D. G., Wu, Y., Charmandaris, V., Devost, D., & Houck, J. R. 2008, ApJ, 680, 398CrossRefGoogle Scholar
Leisenring, J. M., Kemper, F., & Sloan, G. C. 2008, ApJ, 681, 1557CrossRefGoogle Scholar
Madden, S. C., Galliano, F., Jones, A. P., & Sauvage, M. 2006, A&A, 446, 877Google Scholar
Matsuura, M., Wood, P. R., Sloan, G. C., et al. 2006, MNRAS, 371, 415CrossRefGoogle Scholar
Pino, T., Dartois, E., Cao, A.-T., et al. 2008, A&A, 490, 665Google Scholar
Renzini, A. & Voli, M. 1981, A&A, 94, 175Google Scholar
Sloan, G. C. & Price, S. D. 1995, ApJ, 451, 758CrossRefGoogle Scholar
Sloan, G. C. & Price, S. D. 1998, ApJS, 119, 141CrossRefGoogle Scholar
Sloan, G. C., Kraemer, K. E., Matsuura, M., Wood, P. R., Price, S. D., & Egan, M. P. 2006, ApJ, 645, 1118CrossRefGoogle Scholar
Sloan, G. C., Jura, M., Duley, W. W., et al. 2007, ApJ, 664, 1144CrossRefGoogle Scholar
Sloan, G. C., Kraemer, K. E., Wood, P. R., Zijlstra, A. A., Bernard-Salas, J., Devost, D., & Houck, J. R. 2008a, ApJ, 686, 1056CrossRefGoogle Scholar
Sloan, G. C., et al. 2008b, in Luttermoser, D. G., Smith, B. J., & Stencel, R. E. (eds.), The Biggest, Baddest, Coolest Stars, in pressGoogle Scholar
Werner, M., Roellig, T. L., Low, F. J., et al. 2004, ApJS, 154, 1CrossRefGoogle Scholar
Woitke, P. 2006, A&A, 452, 537Google Scholar
Wu, Y., Charmandaris, V., Hao, L., Brandl, B. R., Bernard-Salas, J., Spoon, H. W. W., & Houck, J. R. 2006, ApJ, 639, 157CrossRefGoogle Scholar
Zijlstra, A. A., Matsuura, M., Wood, P. R., et al. 2006, MNRAS, 370, 1961CrossRefGoogle Scholar