The Bolocam Galactic Plane Survey IX: Data Release 2 and Outer Galaxy Extension
Adam Ginsburg, Jason Glenn, Erik Rosolowsky, Timothy P., Ellsworth-Bowers, Cara Battersby, Miranda Dunham, Manuel Merello, Yancy, Shirley, John Bally, Neal J. Evans II, Guy Stringfellow, James Aguirre

TL;DR
This paper presents an improved data release of the Bolocam Galactic Plane Survey, expanding coverage, enhancing data quality, and providing a new catalog of dust emission sources in the northern galactic plane.
Contribution
It introduces a re-reduction and expansion of the survey data with improved angular recovery, calibration, and cataloging, including 8594 sources in the Galactic plane.
Findings
Enhanced angular recovery up to 80"
Improved flux calibration consistency
New catalog with 8594 sources
Abstract
We present a re-reduction and expansion of the Bolocam Galactic Plane Survey, first presented by Aguirre et al. (2011) and Rosolowsky et al. (2010). The BGPS is a 1.1 mm survey of dust emission in the Northern galactic plane, covering longitudes -10 < \ell < 90 and latitudes |b| < 0.5 with a typical 1-\sigma RMS sensitivity of 30-100 mJy in a 33" beam. Version 2 of the survey includes an additional 20 square degrees of coverage in the 3rd and 4th quadrants and 2 square degrees in the 1st quadrant. The new data release has improved angular recovery, with complete recovery out to 80" and partial recovery to 300", and reduced negative bowls around bright sources resulting from the atmospheric subtraction process. We resolve the factor of 1.5 flux calibration offset between the v1.0 data release and other data sets and determine that there is no offset between v2.0 and other data sets. The…
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