A Survey of Velocity Features in Perseus

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A Survey of Velocity Features in
Perseus

• Michelle BorkinSenior Thesis PresentationMay
  12, 2006

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A Survey of Velocity Features
in Perseus
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Star (and Planet) Formation As We Understand It
Disk Jet
Star-Forming Globule
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Whats an HH knot?
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Giant Outflows
Greyscale shows ambient 1000 ptcl/cc gas
Red shows 100 ptcl/cc gas moving away from us
Blue shows 100 ptcl/cc gas moving toward us
H. Arces Thesis 2001
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VLSR 3.4 km/s
3.4 km/s
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VLSR 3.6 km/s
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VLSR 3.8 km/s
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VLSR 4.0 km/s
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VLSR 4.2 km/s
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VLSR 4.4 km/s
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VLSR 4.6 km/s
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VLSR 4.8 km/s
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VLSR 5.0 km/s
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VLSR 5.2 km/s
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VLSR 5.4 km/s
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VLSR 5.6 km/s
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VLSR 5.8 km/s
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VLSR 6.0 km/s
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VLSR 6.2 km/s
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VLSR 6.4 km/s
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VLSR 6.6 km/s
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VLSR 6.8 km/s
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VLSR 7.0 km/s
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VLSR 7.2 km/s
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VLSR 7.4 km/s
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VLSR 7.6 km/s
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VLSR 7.8 km/s
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VLSR 8.0 km/s
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VLSR 8.2 km/s
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VLSR 8.4 km/s
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VLSR 8.6 km/s
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VLSR 8.8 km/s
8.8 km/s
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Barnards Perseus
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Giant Outflows
Greyscale shows ambient 1000 ptcl/cc gas
Red shows 100 ptcl/cc gas moving away from us
Blue shows 100 ptcl/cc gas moving toward us
H. Arces Thesis 2001
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Spectral Line Outflow Mapping
Usually
In Extreme Cases
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Outflows
Note not drawn to scale.
Based on H. Arce Thesis 2001.
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3D Slicer
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3D Slicer
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A Survey of Velocity Features
in Perseus
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Outflow Identification
IRAS Sources
Red Shifted points
HH Objects
Known Outflow Sources
SCF points
Blue Shifted points
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Outflow Identification
Red Shifted points
HH Objects
Known Outflow Sources
c2d Sources
IRAS Sources
SCF points
Blue Shifted points
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B5
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B5
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B5 Results
Region 1 (B5)
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B5 Results
Summation of all the spectra in Region 1
Gaussian fit
All outflows
previously detected outflows
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Results and Conclusions

• 216 high velocity points were identified across
  Perseus
• In the three regions cataloged, 20 new outflows
  were found
• 1 new shell was found spanning Regions 5 and 6
  (across L1448 and NGC 1333)
• Known outflows do not account for all of the
  observed high velocity gas.

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Future Research
IRAS Sources
Red Shifted points
HH Objects
Known Outflow Sources
SCF points
Blue Shifted points
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Questions?
For more information, go to http//www.cfa.harva
rd.edu/COMPLETE/ http//www.cfa.harvard.edu/COMPL
ETE/astromed/ http//iic.harvard.edu