When Bad Masks Turn Good

Conference paper


In keeping with the spirit of a meeting on ‘masks,’ this talk presents two short stories on the theme of dust. In the first, dust plays the familiar role of the evil obscurer, the enemy to bedefeated by the cunning observer in order to allow a key future technology (adaptive optics) to be exploited fully by heroic astronomers. In the second story, dust itself emerges as the improbable hero, in the form of a circumstellar debris disks. I will present evidence of a puzzling near-infrared excess in the continuum of high-redshift galaxies and will argue that the seemingly improbable origin of this IR excess is a population of young circumstellar disks formed around high-mass stars in distant galaxies. Assuming circumstellar disks extend down to lower masses,as they do in our own Galaxy, the excess emission presents us with an exciting opportunity to measure the formation rate of planetary systems in distant galaxies at cosmic epochs before our own solar system formed.


High Redshift Adaptive Optic Bright Star Circumstellar Disk Adaptive Optic System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Abraham, R.G., et al. 2004, AJ, 127,2455 (Paper I)CrossRefADSGoogle Scholar
  2. 2.
    Asari, N.V., Cid Fernandes, R., Stasińska, G., Torres-Papaqui, J.P., Mateus, A., Sodré, L., Schoenell, W., Gomes, J.M. 2007, MNRAS, 381, 263CrossRefADSGoogle Scholar
  3. 3.
    Baldry, I.K., Glazebrook, K. 2003, ApJ, 593,258CrossRefADSGoogle Scholar
  4. 4.
    Bernard, J.P., Boulanger, F., Desert, F.X., Giard, M., Helou, G., Puget, J.L. 1994, A&A, 291, L5ADSGoogle Scholar
  5. 5.
    Cid Fernandes, R., Asari, N.V., Sodré, L., Stasińska, G., Mateus, A., Torres-Papaqui, J.P., Schoenell, W. 2007, MNRAS, 375, L16ADSGoogle Scholar
  6. 6.
    da Cunha, E., Charlot, S., Elbaz, D. 2008, MNRAS, 388, 1595CrossRefADSGoogle Scholar
  7. 7.
    Damjanov, I., et al. 2010, PASP, submittedGoogle Scholar
  8. 8.
    Davies, R., et al. 2007, Messenger, 131, 7ADSGoogle Scholar
  9. 9.
    de Ruyter, S., van Winckel, H., Maas, T., Lloyd Evans, T., Waters, L.B.F.M., Dejonghe, H. 2006, A&A, 448,641CrossRefADSGoogle Scholar
  10. 10.
    Désert, F.-X., Boulanger, F., Puget, J.L. 1990, A&A, 237,215ADSGoogle Scholar
  11. 11.
    Dullemond, C.P., Dominik, C., Natta, A. 2001, ApJ, 560,957CrossRefADSGoogle Scholar
  12. 12.
    Flagey, N., Boulanger, F., Verstraete, L., Miville Deschênes, M.A., Noriega Crespo, A., Reach, W.T. 2006, A&A, 453,969CrossRefADSGoogle Scholar
  13. 13.
    Flicker, R., Rigaut, F. 2001, In: Beyond Conventional Adaptive Optics, ESO Conf Workshop Proc., 58,377Google Scholar
  14. 14.
    Haisch, K.E., Jr., Lada, E.A., Lada, C.J. 2000, AJ, 120,1396CrossRefADSGoogle Scholar
  15. 15.
    Jonsson, P. 2006, MNRAS, 372, 2CrossRefADSGoogle Scholar
  16. 16.
    Longmore, S.N., Maercker, M., Ramstedt, S., Burton, M.G. 2007, MNRAS, 380, 1497CrossRefADSGoogle Scholar
  17. 17.
    Maercker, M., Burton, M.G. 2005, A&A, 438,663CrossRefADSGoogle Scholar
  18. 18.
    Maercker, M., Burton, M.G., Wright, C.M. 2006, A&A, 450,253CrossRefADSGoogle Scholar
  19. 19.
    Mannucci F. 2007, Astronomy with Laser Guide Star Adaptive Optics, FilippoMannucci.pdf
  20. 20.
    Mateus, A., Sodré, L., Cid Fernandes, R., Stasińska, G., Schoenell, W., Gomes, J.M. 2006, MNRAS, 370, 721ADSGoogle Scholar
  21. 21.
    Mentuch, E., et al. 2009, ApJ, 706,1020CrossRefADSGoogle Scholar
  22. 22.
    Phillips, J.P., Ramos-Larios, G. 2005, MNRAS, 364, 849CrossRefADSGoogle Scholar
  23. 23.
    Riffel, R., Pastoriza, M.G., Rodríguez-Ardila, A., Bonatto, C. 2009, MNRAS, 400, 273CrossRefADSGoogle Scholar
  24. 24.
    Sellgren, K. 1984, ApJ, 277,623CrossRefADSGoogle Scholar
  25. 25.
    Sellgren, K., Werner, M.W., Dinerstein, H.L. 1983, ApJ, 271, L13CrossRefADSGoogle Scholar
  26. 26.
    Sellgren, K., Werner, M.W., Allamandola, L.J. 1996, ApJS, 102,369CrossRefADSGoogle Scholar
  27. 27.
    Stern, D., et al. 2005, ApJ, 631,163CrossRefADSGoogle Scholar
  28. 28.
    van Breugel, W., Bland-Hawthorn, J. 2000, Proceedings from ASP Conference, Imaging the Universe in Three Dimensions, ASP, San Francisco, CA, vol. 195Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.Department of Astronomy and AstrophysicsUniversity of TorontoTorontoCanada

Personalised recommendations