The Boston University-Five College Radio Astronomy Observatory Galactic Ring Survey

Abstract

The Boston University-Five College Radio Astronomy Observatory Galactic Ring Survey is a new survey of Galactic 13CO (1-0) emission. The survey used the SEQUOIA multi pixel array on the Five College Radio Astronomy Observatory 14 m telescope to cover a longitude range of l = 18 deg-55.7 deg and a latitude range of |b| < 1 deg, a total of 75.4 square degrees. Using both position-switching and On-The-Fly mapping modes, we achieved an angular sampling of 22 arcsec, better than half of the telescope's 46 arcsec angular resolution. The survey's velocity coverage is -5 to 135 km/s for Galactic longitudes l <= 40 deg and -5 to 85 km/s for Galactic longitudes l > 40 deg. At the velocity resolution of 0.21 km/s, the typical rms sensitivity is sigma(TA*)~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 dataset. We also discuss the telescope and instrumental parameters, the observing modes, the data reduction processes, and the emission and noise characteristics of the dataset. The Galactic Ring Survey data are available to the community at www.bu.edu/galacticring or in DVD form by request.

Accepted ApJ. 21 pages (ApJ emulate style). 12 figures

References in corpus (2)

• The Milky Way in Molecular Clouds: A New Complete CO Survey
• The Bell Laboratories (13)CO Survey: Longitude-Velocity Maps

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• An 80 pc Long Massive Molecular Filament in the Galactic Mid-Plane
• Star formation activity in the neighbourhood of W-R 1503-160L star in the mid-infrared bubble N46
• Infrared Dark Clouds and high-mass star formation activity in Galactic Molecular Clouds
• An X-ray study of the supernova remnant G20.0-0.2 and its surroundings
• The filamentary structures in the CO emission toward the Milky Way disk
• Radio and X-ray properties of the source G29.37+0.1 linked to HESS J1844-030
• The Interaction Between the Supernova Remnant W41 and the Filamentary Infrared Dark Cloud G23.33-0.30
• Discovery of TeV $\gamma$-ray emission from the neighbourhood of the supernova remnant G24.7+0.6 by MAGIC
• Ionized gas in the Scutum spiral arm as traced in [N II] and [C II]
• Search for and Identification of Young Compact Galactic Supernova Remnants Using THOR
• Understanding the Star Formation Efficiency in Dense Gas: Initial Results from the CAFFEINE Survey with ArTéMiS
• Wide Field CO Mapping in the Region of IRAS 19312+1950
• Study of the luminous blue variable star candidate G26.47+0.02 and its environment
• Magnetic fields and Star Formation around HII regions: The S235 complex
• The disk-outflow system around the rare young O-type protostar W42-MME
• Searching for initial stage of massive star formation around the H II region G18.2-0.3
• ALMA Observations of Giant Molecular Clouds in M33 III: Spatially Resolved Features of the Star-Formation Inactive Million-solar-mass Cloud
• Extreme star formation in the Milky Way: Luminosity distributions of young stellar objects in W49A and W51
• Studying the nature of the unidentified gamma-ray source HESS J1841-055 with the MAGIC telescopes
• Ultra-compact Embedded Clusters in the Galactic Plane
• Massive young stellar object W42-MME: The discovery of an infrared jet using VLT/NACO near-infrared images
• New composite supernova remnant toward HESS J1844-030?
• The initial conditions for young massive cluster formation in the Galactic Centre: convergence of large-scale gas flows
• Kinematic Distance of Galactic Planetary Nebulae
• Source clustering in the Hi-GAL survey determined using a minimum spanning tree method
• A Cold and Diffuse Giant Molecular Filament in the Region of $l=41^{\circ }$, $b=-1^{\circ }$
• On the Structure of the Sagittarius Spiral Arm in the Inner Milky Way
• CO~($J=1-0$) Observations toward Filamentary Molecular Clouds in the Galactic Region with $l = [169\arcdeg.75, 174\arcdeg.75], b = [-0\arcdeg.75, 0\arcdeg.5]$
• The Ap 2-1 nebula and the surrounding molecular cloud G35.2-0.74: an active star forming region
• Surveying the Giant HII Regions of the Milky Way with SOFIA: IV. Sgr D, W42, and a Reassessment of the Giant HII Region Census
• Properties of the UCHII region G25.4NW and its associated molecular cloud
• Detailed Analysis of the TeV γ-Ray Sources 3HWC J1928+178, 3HWC J1930+188, and the New Source HAWC J1932+192
• Cloud-cloud collision and star formation in G013.313+0.193
• Planck CO revisited: Improved CO line emission maps from Planck space mission observations
• HyGAL: Characterizing the Galactic ISM with observations of hydrides and other small molecules II. The absorption line survey with the IRAM 30 m telescope
• Characteristic scale of star formation. I. Clump formation efficiency on local scales
• The kinematic distances of SNR G16.7+0.1 and G15.9+0.2 by analyzing HI absorption spectra
• Early Science with the Large Millimetre Telescope: Fragmentation of molecular clumps in the Galaxy
• A multi-wavelength analysis of the diffuse HII region G25.8700+0.1350
• The G332 molecular cloud ring: I. Morphology and physical characteristics
• Thermal Pressure in Diffuse H2 Gas Measured by Herschel [C II] Emission and FUSE UV H2 Absorption
• A Probable New Globular Cluster in the Galactic Disk
• The embedded ring-like feature and star formation activities in G35.673-00.847
• A Comprehensive Study of the Young Cluster IRAS 05100+3723: Properties, Surrounding Interstellar Matter, and Associated Star Formation
• Inadequate turbulent support in low-metallicity molecular clouds
• Submillimeter and molecular views of three Galactic ring-like HII regions
• Star formation in IRDC G31.97+0.07
• HCN $J$=4-3, HNC $J$=1-0, ${\mathrm{H}}^{13}\mathrm{CN}$ $J$=1-0, and $\mathrm{H}{\mathrm{C}}_3\mathrm{N}$ $J$=10-9 Maps of Galactic Center Region II.: Physical Properties of Dense Gas Clumps and Probability of Star Formation
• Scales of Stability and Turbulence in the Molecular ISM
• Spatially decomposed $\gamma$-ray features surrounding SNR Kes 79 & PSR J1853+0056
• A Parsec-scale Bipolar H${}_2$ Outflow in the Massive Star Forming Infrared Dark Cloud Core MSXDC G053.11+00.05 MM1
• Distance and Evolutionary States of Supernova Remnant G18.9-1.1 and Candidate G28.6+0.0
• Spectroscopic [CI] mapping of the infrared dark cloud G48.65-0.29
• The pros and cons of the inversion method approach to derive 3D dust emission properties of the ISM: the Hi-GAL field centred on (l,b)=(30${}^{\circ }$,0${}^{\circ }$)
• Preliminary analysis on the noise characteristics of MWISP data
• X-ray Shadowing Experiments Toward Infrared Dark Clouds
• H2CO and H110α observations towards NH3 sources
• Autonomous Gaussian decomposition of the Galactic Ring Survey. II. The Galactic distribution of 13CO
• Colliding interstellar bubbles in the direction of l=54°
• A multiwavelength study of the star forming region IRAS 18544+0112
• The Milky Way Project: Probing Star Formation with First Results on Yellowballs from DR2
• An interacting molecular cloud scenario for production of gamma-rays and neutrinos from MAGIC J1835-069, and MAGIC J1837-073
• Multi-wavelength study of triggered star formation around 25 H II regions
• HII region G46.5-0.2: the interplay between ionizing radiation, molecular gas and star formation
• Discovering a misaligned CO outflow related to the red MSX source G034.5964-01.0292
• The Molecular Clouds associated with the H II Regions/Candidates between $l=207.7^{\circ }$ and $l=211.7^{\circ }$
• Molecular contrails -- triggered contraction by passages of massive objects through molecular clouds
• The molecular environment of the Galactic star forming region G19.61-0.23
• Radio study of HESS J1857+026. Gamma-rays from a superbubble?
• Northern Galactic Molecular Cloud Clumps in Hi-GAL: Dense Gas Map and Environmental Trends
• Northern Galactic Molecular Cloud Clumps in Hi-GAL: Clump and Star Formation within Clouds
• Fragmented atomic shell around S187 HII region and its interaction with molecular and ionized gas
• OGHReS: Star formation in the Outer Galaxy II ($\ell =180^{\circ }$-$280^{\circ }$)
• Atomic and Molecular Phases of the Interstellar Medium
• Radio and infrared study of the supernova remnant candidate HESS J1912+101
• Ammonia mapping observations of the Galactic infrared bubble N49: Three NH${}_3$ clumps along the molecular filament
• High resolution observations of 12CO and 13CO(3--2) toward the NGC 6334 extended filament
• Herschel-HIFI observations of H2O, NH3 and N2H+ toward high-mass starless and proto-stellar clumps identified by the Hi-GAL survey
• Cold atomic gas identified by HI self-absorption. Cold atomic clouds toward giant molecular filaments
• A Global View of Molecule-Forming Clouds in the Galaxy
• The Impact of Expanding HII Regions on Filament G37:Curved Magnetic Field and Multiple Direction Material Flows
• Anisotropy in the carbon monoxide (CO) line emission across the Milky Way's disk
• High-Resolution Observations of the Molecular Clouds Associated with the Huge HII Region CTB 102
• Which Molecular Cloud Structures Are Bound?
• Herbig Ae/Be candidate stars in the innermost Galactic disk: Quartet cluster
• Research on the Interstellar Medium and Star Formation in the Galaxy: An Indian Perspective
• The TMRT K Band Observations towards 26 Infrared Dark Clouds: NH${}_3$, CCS, and HC${}_3$N
• GeV emission in the region of the supernova remnant G51.26+0.11
• Comparative study of the relationships between CO isotopic luminosities and infrared luminosity for the Galactic dense cores
• Examinations of CO completeness based on three independent CO surveys