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W51 IRS2

Cassio Leandro Barbosa. W51 IRS2. Outline. What we know T-ReCS, NIFS PseudoLong Slit Analysis (PLSA) ‏ What we don't know NIFS Principal Component Analysis (PCA) ‏ Pilot project on PCA of HII regions Questions not allowed for this part!. W51 IRS2 introducing. W51 IRS2. W51 IRS2.

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W51 IRS2

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  1. Cassio Leandro Barbosa W51 IRS2

  2. Outline • What we know • T-ReCS, NIFS PseudoLong Slit Analysis • (PLSA)‏ • What we don't know • NIFS Principal Component Analysis (PCA)‏ • Pilot project on PCA of HII regions • Questions not allowed for this part!

  3. W51 IRS2introducing

  4. W51 IRS2

  5. W51 IRS2

  6. W51 IRS2

  7. W51 IRS2

  8. W51 IRS2introducing the field

  9. The W51 IRS2 field

  10. Mid Infrared - T-ReCS

  11. Near Infrared – NIFS PLS Analysis

  12. Near Infrared – NIFSPLS Analysis

  13. With special thanks to Joao Steiner and Tiago Ricci (IAG-USP)‏ NIFS: enters the Principal Component Analysis (PCA)‏

  14. W51 – the continuum (21035A-21342A) emission (and reflection?)‏

  15. Double stars?after a R-L deconvolution

  16. Image and spectra “Feature enhanced”Br gamma, blue cont. andred cont.

  17. Nebular emission from the lines2.2864 um([Se IV]? Blum & MacGregor 2008) and2.2858 um233231 235

  18. Nebular emission from the lines2.2865 ([Se IV]?)um and2.2858 um233231 235

  19. The He I 21126 A emission

  20. The [Fe III] 22184 A emission

  21. The H2 21218 A emission

  22. The W51-235 fragmented H2 cloudH2 atrest +redandbluewings

  23. Field 233

  24. W51 - Conclusions • Ideal (complicate) lab for massive star formation: all stages of MSF in a such small region. • 2 naked O3 (and where are the mid/late O??)‏ • 3 UCHII regions • 1 (or 3?) MYSO with disk • 1 younger MYSO producing a jet(?)‏ • Photoionized nebulae (high/medium)‏ • Non-fragmented H2 clouds • Fragmented H2 clouds • More stars to come or ionization front?

  25. Let's party

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