Project Summary

The Milky Way's dominant star-forming structure, the Galactic Ring, remains largely unexplored. Advances in mm-wave array technology permit a fresh examination of the Galactic Ring. Using the SEQUOIA multi-pixel array receiver on the FCRAO 14 m telescope, we are conducting a new molecular line survey of the inner Galaxy, the Boston University-FCRAO Galactic Ring Survey (GRS).

Integrated intensity image

Integrated 13CO J=1-0 intensity from the first 16 square degrees covered by the GRS.

Compared with previous molecular line surveys of the inner Galaxy, the GRS offers excellent sensitivity (<0.4 K), higher spectral resolution (0.2 km/s), comparable or better angular resolution (46") and sampling (22"), and the use of 13CO (1-0), a better column density tracer than the commonly observed 12CO.

The key questions the Galactic Ring Survey will address are:

In detail we will:


Please use the following reference for GRS data in your publications:

\bibitem[Jackson et al.(2006)]{2006ApJS..163..145J} Jackson, J.~M., et al.\ 2006, \apjs, 163, 145


Please use the following acknowledgement in any published material that makes use of GRS data:

This publication makes use of molecular line data from the Boston University-FCRAO Galactic Ring Survey (GRS). The GRS is a joint project of Boston University and Five College Radio Astronomy Observatory, funded by the National Science Foundation under grants AST-9800334, AST-0098562, & AST-0100793

GRS Web Statistics!

The GRS is supported by the NSF via grants AST-9800334, AST-0098562 and AST-0507657  
The FCRAO is supported by the NSF via AST-0100793 and AST-0228993.