Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21934102m&link_type=abstract
American Astronomical Society, AAS Meeting #219, #341.02
Astronomy and Astrophysics
Astronomy
Scientific paper
We present early results from a statistical analysis of magnetic field strengths in star forming regions revealed by data from the Galactic Plane Infrared Polarization Survey (GPIPS). Ten star forming regions were chosen for analysis based on GLIMPSE and BOLOCAM survey properties. All targets are in the first galactic quadrant at estimated distances between 2.35 and 4.05 kpc. Background starlight polarization data were obtained with the Mimir instrument on the 1.8m Perkins telescope outside Flagstaff, AZ. Starlight polarizations were mapped in and around the star-forming clouds, and the Chandrasekhar-Fermi method was used to create resolved magnetic field strength maps with up to 22 arcsec resolution. Regions offset from the star formation provide context for assessing the effects of star formation on, and by, magnetic fields. Our previous study of the quiescent cloud GRSMC 45.60+0.30 was used for comparison with these star forming regions. Key future questions which exist for exploration with this data set include: How well do GPIPS polarizations probe dense cores surrounding newly forming stars? How does the magnetic field strength change around the cores? How do magnetic field strengths and gas densities relate in the regions surrounding cores? This work was partially supported by NSF AST 09-07790, Federal Work-Study, and Boston University Undergraduate Research Opportunity Program grants and awards.
Clemens Dan P.
Marchwinski Robert C.
Pavel Michael D.
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