Hostname: page-component-77c89778f8-fv566 Total loading time: 0 Render date: 2024-07-18T06:40:39.001Z Has data issue: false hasContentIssue false
  • English
  • Français

A 45 AU radius source around L1551-IRS 5: a possible accretion disk

Published online by Cambridge University Press:  03 August 2017

J. Keene  and
C. R. Masson
J. Keene
Affiliation:
California Institute of Technology, 320-47, Pasadena, CA, 91125, USA
C. R. Masson
Affiliation:
California Institute of Technology, 320-47, Pasadena, CA, 91125, USA Center for Astrophysics, 60 Garden Street, Cambridge, MA, 02138, USA

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.

Our interferometric and single-dish observations of the continuum emission from L1551-IRS 5 show that, at millimeter wavelengths, there are two distinct components to the source, an envelope with a radius ≥ 2000 AU, and a compact core with a radius ≤ 64 AU. The compact core has a large optical depth, indicating a high column density (∼ 1000 g cm—2). By modeling the temperature in the region of the compact core, we show that its size must lie in the range 45 ± 20 AU. The compact core is most plausibly identified with an accretion, or preplanetary, disk around the star, although the present observations do not have sufficient angular resolution to rule out other structures.

Type
Early Stages of Stellar Evolution
Information
Symposium - International Astronomical Union , Volume 147: Fragmentation of Molecular Clouds and Star Formation , 1991 , pp. 361 - 372
Copyright
Copyright © Kluwer 1991 

References

Adams, F. C., Lada, C. J., and Shu, F. H. 1987, Ap. J., 312, 788.CrossRefGoogle Scholar
Adams, F. C., and Shu, F. H. 1986, Ap. J., 308, 836.CrossRefGoogle Scholar
Bieging, J. H., and Cohen, M. 1985, Ap. J. (Letters), 289, L5.CrossRefGoogle Scholar
Bieging, J. H., Cohen, M, and Schwartz, P. R. 1984, Ap. J., 282, 699.CrossRefGoogle Scholar
Butner, H. M., Evans, N. J. II, Lester, D. F., Levreault, R. M, Strom, S. E. 1990, Ap. J. in press.Google Scholar
Cameron, A. G. W. 1985, in Protostars and Planets II, ed. Black, D. C. and Matthews, M. S. (Tucson: University of Arizona Press), p. 1073.Google Scholar
Campbell, B., Persson, S. E., Strom, S. E., and Grasdalen, G. L. 1988, A. J., 95, 1173.Google Scholar
Draine, B. T., and Lee, H. M. 1984, Ap. J., 285, 89.CrossRefGoogle Scholar
Hayashi, C., Nakazawa, K., and Nakagawa, Y. 1985 in Protostars and Planets II, ed. Black, D. C. and Matthews, M. S. (Tucson: University of Arizona Press), p. 1100.Google Scholar
Hildebrand, R. H. 1983, Quart. J. R. A. S., 24, 267.Google Scholar
Hodapp, K.-W., Capps, R. W., Strom, S. E., Salas, L., and Grasdalen, G. L. 1988, Ap. J., 335, 814.CrossRefGoogle Scholar
Keene, J., Hildebrand, R. H., and Whitcomb, S. E. 1982, Ap. J. (Letters), 252, L11.CrossRefGoogle Scholar
Lin, D. N. C., and Papaloizou, J. 1985, in Protostars and Planets II, ed. Black, D. C. and Matthews, M. S. (Tucson: University of Arizona Press), p. 981.Google Scholar
Lynden-Bell, D., and Pringle, J. E. 1974, M. N. R. A. S., 168, 603.Google Scholar
Mundt, R., and Fried, J. W. 1983, Ap. J. (Letters), 274, L83.Google Scholar
Mundt, R., Stocke, J., Strom, S. E., Strom, K. M., and Anderson, E. R. 1985, Ap. J., 297, L41.Google Scholar
Rodríguez, L. F., Cantó, J., Torrelles, J. M., and Ho, P. T. P. 1986, Ap. J. (Letters), 301, L25.CrossRefGoogle Scholar
Safronov, V. S., and Ruzmaikina, T. V. 1985, in Protostars and Planets II, ed. Black, D. C. and Matthews, M. S. (Tucson: University of Arizona Press), p. 959.Google Scholar
Sargent, A. I., and Beckwith, S. 1987, Ap. J., 323, 284.CrossRefGoogle Scholar
Smith, B. A., and Terrile, R. J. 1985, Science, 226, 1421.Google Scholar
Snell, R. L. 1981, Ap. J. Suppl., 45, 121.Google Scholar
Snell, R. L., Loren, R. B., and Plambeck, R. L. 1980, Ap. J. (Letters), 239, L17.Google Scholar
Stocke, J., Hartigan, P. M., Strom, S. E., Strom, K. M., Anderson, E. R., Hartmann, L. W., and Kenyon, S. J. 1988, Ap. J. Suppl., 68, 229.Google Scholar
Strom, S. E., Strom, K. M., Grasdalen, G. L., Capps, R. W., and Thompson, D. 1985, A. J., 90, 2575.CrossRefGoogle Scholar
Terebey, S., Shu, F. H., and Cassen, P. 1984, Ap. J., 286, 529.CrossRefGoogle Scholar
Walker, C. K., Adams, F. C., and Lada, C. J. 1990, Ap. J., 349, 515.Google Scholar
Woody, D. P., Scott, S. L., Scoville, N. Z., Mundy, L. G., Sargent, A. I., Padin, S., Tinney, C. G., and Wilson, C. D. 1989, Ap. J. (Letters), 337, L41.Google Scholar