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THE BOLOCAM GALACTIC PLANE SURVEY. V. HCO <sup>+</sup> AND N <sub>2</sub> H <sup>+</sup> SPECTROSCOPY OF 1.1 mm DUST CONTINUUM SOURCES

THE BOLOCAM GALACTIC PLANE SURVEY. V. HCO <sup>+</sup> AND N <sub>2</sub> H <sup>+</sup> SPECTROSCOPY OF 1.1 mm DUST CONTINUUM SOURCES

We present the results of observations of 1882 sources in the Bolocam Galactic Plane Survey (BGPS) at 1.1 mm with the 10m Heinrich Hertz Telescope simultaneously in HCO+ J=3-2 and N2H+ J=3-2. We detect 77% of these sources in HCO^+ and 51% in N2H+ at greater than 3$\sigma$. We find …