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Contributions if Interferometry for Orion

Contributions if Interferometry for Orion. M. Robberto (ESA/STScI). The Great Orion Nebula. The Orion Cluster. The Orion Cluster. 2mass near-IR image. Why Orion is important?. Is the nearest GMC and the most recent episode of massive star formation

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Contributions if Interferometry for Orion

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  1. Contributions if Interferometry for Orion M. Robberto (ESA/STScI)

  2. The Great Orion Nebula

  3. The Orion Cluster The Orion Cluster 2mass near-IR image

  4. Why Orion is important? • Is the nearest GMC and the most recent episode of massive star formation • Distance is fairly well known (~450pc) • Background contamination is low • Is the paradigm for typical star formation • Is the paradigm for typical planet formation?

  5. The HST mosaic HST; Ha+[OIII]+[SII] (courtesy Bob O’Dell)

  6. HST; F547M (courtesy Bob O’Dell)

  7. VLT JHK composite

  8. 3.5 micron image Lada et al., 2000

  9. 10 micron image

  10. BN-KL Ney-Allen OMC1-S 10 micron image

  11. 174 point N-micron point sources

  12. Understanding the IR emission of photoevaporated disks • Disks in HII regions are under the influence of a complex radiation field • HST data constrain the model parameters (tilt angle with respect to the ionizing star and to the Earth, distance from the ionizing star, disk size…) Robberto, Beckwith and Panagia, Ap.J, 2002 (in press)

  13. MID-IR imaging > photometry > SEDs vs. disk models Ha,[OIII],[SII] 2.2mm 3.5mm 10mm Robberto, Beckwith and Herbst, 2000

  14. BN/KL

  15. IRC2 Dougados et al. 1993 ApJ 406,111 MAX N-band

  16. OMC1-South

  17. Search for the OMC1-South exciting source

  18. Ney-Allen nebula MAX 10mm HST/WFPC2 F547M MAX 10/20mm

  19. q1Ori-C and SC3 F336W – PC 1s

  20. q1Ori-C and SC3 F336W – PC 30s

  21. q1Ori-C and SC3 F439W – PC 1s

  22. q1Ori-C and SC3 F439W – PC 30s

  23. q1Ori-B is extended/binary F457M – PC 30s

  24. Modeling the arcs

  25. q1Ori-D anomaly

  26. Is Ney Allen Nebula associatedto q1Ori-D?

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