Computer Science
Scientific paper
Sep 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop..201f&link_type=abstract
Spitzer Proposal ID #201
Computer Science
Scientific paper
The evolution of high mass star formation regions is affected by the creation and evolution of photodissociation regions (PDRs), which are not present in the case of low mass star formation since the latter do not emit the necessary UV. In star forming regions like NGC 7538 and S252, high mass YSOs representing a second generation of star formation are often found embedded in PDRs. We would like to understand how the chemistry, composition, and structure of PDRs fit in to the overall puzzle of high mass star formation. To this end, we propose a program of high sensitivity IRAC imaging of the infrared emission from these diffuse regions. IRAC's spectral coverage, high sensitivity to extended IR emission, and good spatial resolution over large fields will allow us to obtain critical data on the dust populations in PDRs. In particular, three of IRAC's four bands include wavelengths of emission from PAHs, which strongly contribute to the heating of PDRs via photoelectric heating due to PAHs' highly efficient ionization by far-IR photons. PAHs are excellent diagnostics for probing the conditions in PDRs through spectral and spatial variations.
Fazio Giovanni
Megeath Tom
No associations
LandOfFree
The Role of Photodissociation Regions in High Mass Star Formation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Role of Photodissociation Regions in High Mass Star Formation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Role of Photodissociation Regions in High Mass Star Formation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1823488