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Discovery of a shell around Alpha Lyrae
Abstract
IRAS observations of Alpha Lyrae reveal a large infrared excess beyond 12 microns. The excess over an extrapolation of a 10,000 K blackbody is a factor of 1.3 at 25 microns, 7 at 60 microns, and 16 at 100 microns. The source of 60 microns emission has a diameter of about 20 arcsec. This is the first detection of a large infrared excess from a main-sequence star without significant mass loss. The most likely origin of the excess is thermal radiation from solid particles more than a millimeter in radius, located approximately 85 AU from Alpha Lyr and heated by the star to an equilibrium temperature of 85 K. These results provide the first direct evidence outside of the solar system for the growth of large particles from the residual of the prenatal cloud of gas and dust.
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Cited by
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Wright, E. L., Eisenhardt, P. R. M., Mainzer, A. K., Ressler, M. E., Cutri, R. M., Jarrett, T., Kirkpatrick, J. D., Padgett, D., McMillan, R. S., Skrutskie, M., et al. (2010) · The Astronomical Journal · doi:10.1088/0004-6256/140/6/1868 · Cited by 7,987
Self-citationMeeus, G., Waters, L. B. F. M., Bouwman, J., van den Ancker, M. E., Waelkens, C., & Malfait, K. (2001) · Astronomy & Astrophysics · doi:10.1051/0004-6361:20000144 · Cited by 567
Transience of Hot Dust around Sun‐like Stars
Wyatt, M. C., Smith, R., Greaves, J. S., Beichman, C. A., Bryden, G., & Lisse, C. M. (2007) · The Astrophysical Journal · doi:10.1086/510999 · Cited by 334
Self-citationDebris Disks around Sun‐like Stars
Trilling, D. E., Bryden, G., Beichman, C. A., Rieke, G. H., Su, K. Y. L., Stansberry, J. A., Blaylock, M., Stapelfeldt, K. R., Beeman, J. W., & Haller, E. E. (2008) · The Astrophysical Journal · doi:10.1086/525514 · Cited by 295
Self-citationFrequency of Debris Disks around Solar‐Type Stars: First Results from a Spitzer MIPS Survey
Bryden, G., Beichman, C. A., Trilling, D. E., Rieke, G. H., Holmes, E. K., Lawler, S. M., Stapelfeldt, K. R., Werner, M. W., Gautier, T. N., Blaylock, M., et al. (2006) · The Astrophysical Journal · doi:10.1086/498093 · Cited by 264
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Metadata
- Authors
- Aumann, H. H., Beichman, C. A., Gillett, F. C., de Jong, T., Houck, J. R., Low, F. J., Neugebauer, G., Walker, R. G., & Wesselius, P. R.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 1984-03
- Volume
- 278
- Pages
- L23
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2114083330
- Cited by
- 624
- References
- 0
- FWCI
- 19.55
- Type
- journal article
- Language
- en
- Open access
- closed
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- Aumann, H. H., Beichman, C. A., Gillett, F. C., de Jong, T., Houck, J. R., Low, F. J., Neugebauer, G., Walker, R. G., & Wesselius, P. R. (1984). Discovery of a shell around Alpha Lyrae. The Astrophysical Journal. https://doi.org/10.1086/184214
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