Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-11-25T22:20:15.894Z Has data issue: false hasContentIssue false
  • English
  • Français

Evidences of protoplanetary disks in a selected sample of weak T Tauri stars

Published online by Cambridge University Press:  26 May 2016

Jane Gregorio-Hetem  and
Annibal Hetem Jr.
Jane Gregorio-Hetem
Affiliation:
Universidade de São Paulo (IAG/USP), Av. Miguel Stéfano 4200, 04301-904, São Paulo - Brazil; jane@orion.iagusp.usp.br
Annibal Hetem Jr.
Affiliation:
Universidade Paulista (UNIP/ICET), R. Dr. Bacelar 1212, 04026-002, São Paulo - Brazil; annibal.hetem@usa.net

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.

A model with two dust components is used do explain the circumstellar structure of weak-T Tauri stars. The IR-excess was calculated and compared to spectroscopic criteria in order to classify the objects according an evolutionary sequence. About 46% of the sample correspond to young main sequence stars showing dust distribution consistent with a disrupted disk, that could be possibly caused by the formation of a planetary system.

Type
Part IV: Protoplanetary and β Pic disks
Information
Symposium - International Astronomical Union , Volume 202: Planetary Systems in the Universe – Observation, Formation and Evolution , 2004 , pp. 335 - 337
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

André, P., & Montmerle, T. 1994, ApJ, 420, 837.CrossRefGoogle Scholar
Briceño, C., Hartmann, L. W., Stauffer, J. R., Gagné, M., Stern, R. A., & Caillault, J.-P. 1997, AJ, 113, 740.Google Scholar
Calvet, N., Hartmann, L., Kenyon, S. J., & Whitney, B. A. 1994, ApJ, 434, 330.CrossRefGoogle Scholar
Covino, E., Alcalá, J. M., Allain, S., Bouvier, J., Terranegra, L., & Krautter, J. 1997, A&A, 328, 187.Google Scholar
Gregorio-Hetem, J., Lépine, J. R. D., Torres, C. A. O., Quast, G. R., & de la Reza, R. 1992, AJ, 103, 549 (PDS I).CrossRefGoogle Scholar
Hetem, A., Gregorio-Hetem, J., Lépine, J.R.D. 1994, in Proceedings of the 10th IAP Astrophysics Meeting, Circumstellar Dust Disks and Planet Formation, ed. Ferlet, R. & Vidal-Madjar, A. (Editions Frontiéres), 369.Google Scholar
Martín, E. L. 1997, A&A, 321, 492.Google Scholar
Natta, A. 1993, ApJ, 412, 761.CrossRefGoogle Scholar
Torres, C. A. O., Quast, G. R., de la Reza, R., Lépine, J. R. D., & Gregorio-Hetem, J. 1995, AJ, 109, 2146 (PDS II).Google Scholar
Wichmann, R., Covino, E., Alcalá, J. M., Krautter, J., Allain, S., & Hauschildt, P. H. 1999, MNRAS, 307, 909.CrossRefGoogle Scholar
Wilking, B. A., Lada, C. J., & Young, E. T. 1989, ApJ, 340, 823.Google Scholar