Statistics
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21541407s&link_type=abstract
American Astronomical Society, AAS Meeting #215, #414.07; Bulletin of the American Astronomical Society, Vol. 42, p.254
Statistics
Scientific paper
We conducted a spectroscopic survey of BGPS continuum sources using the HHSMT on Mount Graham, Arizona. We observed HCO+ (3-2) and N2H+ (3-2) simultaneously toward nearly a quarter of the more than 8,000 sources identified in 1.1mm continuum maps with galactic longitudes of 10 to 100 degrees and specific regions near l = 111° and l = 135°. HCO+ and N2H+ form a unique chemical pair of molecular probes since HCO+ is formed by CO and N2H+ is destroyed by CO. The detection rates for this survey are more than 78% of sources are detected in HCO+ (3-2) and nearly 55% in N2H+ (3-2). We find that EVERY source that has an N2H+ detection has an HCO+ counterpart. Included with the detection rates are qualitative statistics for the structure of line profiles. The molecular emission is well correlated between the two tracers and with the 1.1 mm flux. We compute velocities and kinematical distances from which we compute a size-linewidth relationship and mass distributions in various galactic environments.
Bally John
Battersby Cara
BGPS Team
Dunham Michael M.
Rosolowsky Erik
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