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Title:
The Boston University-Five College Radio Astronomy Observatory Galactic Ring Survey
Authors:
Jackson, J. M.; Rathborne, J. M.; Shah, R. Y.; Simon, R.; Bania, T. M.; Clemens, D. P.; Chambers, E. T.; Johnson, A. M.; Dormody, M.; Lavoie, R.; Heyer, M. H.
Affiliation:
AA(Institute for Astrophysical Research, Boston University, 725 Commonwealth Avenue, Boston, MA 02215 ), AB(Institute for Astrophysical Research, Boston University, 725 Commonwealth Avenue, Boston, MA 02215 ), AC(Institute for Astrophysical Research, Boston University, 725 Commonwealth Avenue, Boston, MA 02215 ), AD(Institute for Astrophysical Research, Boston University, 725 Commonwealth Avenue, Boston, MA 02215; I.Physikalisches Institut, Universität zu Köln, Zülpicher Strasse 77, 50937 Köln, Germany ), AE(Institute for Astrophysical Research, Boston University, 725 Commonwealth Avenue, Boston, MA 02215 ), AF(Institute for Astrophysical Research, Boston University, 725 Commonwealth Avenue, Boston, MA 02215 ), AG(Institute for Astrophysical Research, Boston University, 725 Commonwealth Avenue, Boston, MA 02215 ), AH(Institute for Astrophysical Research, Boston University, 725 Commonwealth Avenue, Boston, MA 02215 ), AI(Institute for Astrophysical Research, Boston University, 725 Commonwealth Avenue, Boston, MA 02215 ), AJ(Institute for Astrophysical Research, Boston University, 725 Commonwealth Avenue, Boston, MA 02215 ), AK(Department of Astronomy, Lederle Graduate Research Tower, University of Massachusetts, Amherst, MA 01003 )
Publication:
The Astrophysical Journal Supplement Series, Volume 163, Issue 1, pp. 145-159. (ApJS Homepage)
Publication Date:
03/2006
Origin:
UCP
Astronomy Keywords:
Galaxy: Kinematics and Dynamics, ISM: Clouds, ISM: Molecules, Radio Lines: General, Surveys
DOI:
10.1086/500091
Bibliographic Code:
2006ApJS..163..145J

Abstract

The Boston University-Five College Radio Astronomy Observatory Galactic Ring Survey is a new survey of Galactic 13CO J=1-->0 emission. The survey used the SEQUOIA multipixel array on the Five College Radio Astronomy Observatory 14 m telescope to cover a longitude range of l=18deg-55.7d and a latitude range of |b|<1deg, a total of 75.4 deg2. Using both position-switching and On-The-Fly mapping modes, we achieved an angular sampling of 22", better than half of the telescope's 46" angular resolution. The survey's velocity coverage is -5 to 135 km s-1 for Galactic longitudes l<=40deg and -5 to 85 km s-1 for Galactic longitudes l>40deg. At the velocity resolution of 0.21 km s-1, the typical rms sensitivity is σ(T*A)~0.13 K. The survey comprises a total of 1,993,522 spectra. We show integrated intensity images (zeroth moment maps), channel maps, position-velocity diagrams, and an average spectrum of the completed survey data set. We also discuss the telescope and instrumental parameters, the observing modes, the data reduction processes, and the emission and noise characteristics of the data set. The Galactic Ring Survey data are available to the community online or in DVD form by request.
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