Advertisement

Astrophysics and Space Science

, Volume 224, Issue 1–2, pp 389–393 | Cite as

Follow-up observations of β-pic-like stars

  • H. J. Walker
  • H. M. Butner
Session I: Main Sequence Disks

Abstract

Following the discovery, by IRAS, of the dust disc around Vega and three other main sequence stars, searches have been made for other candidates. Theβ-Pic-like candidates have 12µm excesses and 100µm fluxes (unlike the Vega-like candidates), so they can be further investigated using ground-based techniques. Data are presented here, comprising 10µm spectroscopy and sub-mm observations, for several candidates from the Walker & Wolstencroft list, showing that the stars have silicate dust, and optically thick dust discs even at 1300µm.

Key words

Dust discs main sequence stars Vega-like stars β-Pic-like stars 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Aumann, H.H.: 1985, Publ. of the ASP97, 885.Google Scholar
  2. Aumann, H.H.et al.: 1984, Astrophys. J.278, L23.Google Scholar
  3. Butner, H.M, Walker, H.J., Lada, E.A. & Beckwith, S.V.W.: 1994, in preparation.Google Scholar
  4. Chini, R., Krügel, E., Shustov, B., Tutukov, A. & Kreysa, E.: 1991, Astron. & Astrophys.252, 220.Google Scholar
  5. Fajardo-Acosta, S.B., Telesco, C.M. & Knacke, R.F.: 1993, Astrophys. J.417, L33.Google Scholar
  6. Gillett, F.C.: 1986, inLight on Dark Matter, ed: F.P. Israel, Reidel: Dordrecht, p61.Google Scholar
  7. Hanner, M.S., Newburn, R.L., Gehrz, R.D., Harrison, T., Ney, E.P. & Hayward, T.L.: 1990, Astrophys. J.348, 312.Google Scholar
  8. Hanner, M.S.: 1994, private communication.Google Scholar
  9. Harper, D.A., Loewenstein, R.F. & Davidson, J.A.: 1984, Astrophys. J.285, 808.Google Scholar
  10. Harvey, P.M., Smith, B. & DiFrancesco, J.: 1994, in this volume.Google Scholar
  11. Knacke, R.F. Fajardo-Acosta, S.B., Telesco, C.M., Hackwell, J.A., Lynch, D.K. & Russell, R.W.: 1993, Astrophys. J.418, 440.Google Scholar
  12. Lagrange-Henri, A.M., Vidal-Madjar, A. & Ferlet, R.: 1988, Astron. & Astrophys.190, 275.Google Scholar
  13. Neff, J.E. & Cheng, K-P: 1994, in this volume.Google Scholar
  14. Skinner, C.J., Barlow, M.J. & Justtanont, K.: 1992, Mon. Not. of the RAS255, 31P.Google Scholar
  15. Smith, B.A. & Terrile, R.J.: 1984, Science226, 1421.Google Scholar
  16. Sylvester, R.J., Barlow, M.J. & Skinner, C.J.: 1994, Astrophys. & Space Sci.212, 261.Google Scholar
  17. Sylvester, R.J.: 1994, in this volume.Google Scholar
  18. Walker, H.J., Butner, H.M., Wooden, D.H. & Witteborn, F.C.: 1994, in preparation.Google Scholar
  19. Walker, H.J. & Wolstencroft, R.D.: 1988, Publ. of the ASP100, 1509.Google Scholar
  20. Wolstencroft, R.D.: 1994, in this volume.Google Scholar
  21. Zuckerman, B. & Becklin, E.E.: 1993, Astrophys. J.414, 793.Google Scholar

Copyright information

© Kluwer Academic Publishers 1995

Authors and Affiliations

  • H. J. Walker
    • 1
  • H. M. Butner
    • 2
  1. 1.Rutherford Appleton LaboratoryDRALChilton, Didcot, OxonUK
  2. 2.Department of Terrestrial MagnetismCarnegie Institution of WashingtonWashington, D.C.USA

Personalised recommendations