The Milky Way Imaging Scroll Painting (MWISP): Project Details and Initial Results from the Galactic Longitude of 25.8deg to 49.7deg

Abstract

The Milky Way Imaging Scroll Painting (MWISP) project is an unbiased Galactic plane CO survey for mapping regions of l=-10deg to +250deg and |b|<5.2deg with the 13.7 m telescope of the Purple Mountain Observatory. The legacy survey aims to observe the 12CO, 13CO, and C18O (J=1-0) lines simultaneously with full sampling using the nine-beam Superconducting SpectroScopic Array Receiver (SSAR) system with an instantaneous bandwidth of 1 GHz. In this paper, the completed 250 deg^2 data from l=+25.8deg to +49.7deg are presented with a grid spacing of 30" and a typical rms noise level of ~0.5 K for 12CO at the channel width of 0.16 km/s and ~0.3 K for 13CO and C18O at 0.17 km/s. The high quality data with moderate resolution (50"), uniform sensitivity, and high spatial dynamic range, allow us to investigate the details of molecular clouds (MCs) traced by the three CO isotope lines. Three interesting examples are briefly investigated, including distant Galactic spiral arms traced by CO emission with VLSR<0 km/s, the bubble-like dense gas structure near the HII region W40, and the MCs distribution perpendicular to the Galactic plane.

40 pages, 17 figures and 2 tables in one-column format, accepted for publication in ApJS

References in corpus (19)

• The Boston University-Five College Radio Astronomy Observatory Galactic Ring Survey
• Physical properties of molecular clouds for the entire Milky Way disk
• FOREST Unbiased Galactic plane Imaging survey with the Nobeyama 45-m telescope (FUGIN) I: Project Overview and Initial Results
• The Electron Temperature Gradient in the Galactic Disk
• The Gould's Belt Distances Survey (GOBELINS) III. The distance to the Serpens/Aquila Molecular Complex
• A Possible Extension of the Scutum-Centaurus Arm into the Outer Second Quadrant
• The formation of the W43 complex: constraining its atomic-to-molecular transition and searching for colliding clouds
• L1188: a promising candidate of cloud-cloud collision triggering the formation of the low- and intermediate-mass stars
• Interaction Between Supernova Remnant G22.7-0.2 And The Ambient Molecular Clouds
• The Distant Outer Gas Arm Between l=35d and l=45d
• Interaction between the Supernova Remnant HB 3 and the Nearby Star-Forming Region W3
• CO~($J=1-0$) Observations of a Filamentary Molecular Cloud in the Galactic Region Centered at $l = 150\arcdeg, b = 3.5\arcdeg$
• Is HESS J1912+101 associated with an old Supernova Remnant?
• Wide-Field ${}^{12}$CO ($J=2-1$) and ${}^{13}$CO ($J=2-1$) Observations toward the Aquila Rift and Serpens Molecular Cloud Complexes. I. Molecular Clouds and Their Physical Properties
• Molecular Environments of Three Large Supernova Remnants in the Third Galactic Quadrant: G205.5+0.5, G206.9+2.3, and G213.0-0.6
• Discovery of a pre-existing molecular filament associated with supernova remnant G127.1+0.5
• Molecular gas toward the Gemini OB1 Giant Molecular Cloud Complex I: Observation data
• Carbon Monoxide Observations Toward Star Forming Regions in the Outer Scutum-Centaurus Spiral Arm
• A review of the W51 Cloud

Cited by in corpus (88)

• Sciences with the 2.5-meter Wide Field Survey Telescope (WFST)
• The SEDIGISM survey: first data release and overview of the Galactic structure
• The HI/OH/Recombination line survey of the inner Milky Way (THOR): data release 2 and HI overview
• The MPIfR-MeerKAT Galactic Plane survey I -- System setup and early results
• Distances and statistics of local molecular clouds in the first Galactic quadrant
• Molecular gas distribution perpendicular to the Galactic plane
• A Morphological Classification of 18190 Molecular Clouds Identified in ${}^{12}$CO Data from the MWISP Survey
• Autonomous Gaussian decomposition of the Galactic Ring Survey. I. Global statistics and properties of the 13CO emission data
• Edge collapse and subsequent longitudinal accretion in Filament S242
• Distances to molecular clouds in the second Galactic quadrant
• Physical and chemical structure of the Serpens filament -- fast formation and gravity-driven accretion
• Gas Column Density Distribution of Molecular Clouds in the Third Quadrant of the Milky Way
• Local Molecular Gas toward the Aquila Rift Region
• Searching for Molecular Outflows with Support Vector Machines: Dark Cloud Complex in Cygnus
• 12CO (3-2) High-Resolution Survey (COHRS) of the Galactic Plane: Complete Data Release
• Peering into the Milky Way by FAST: II. Ionized gas in the inner Galactic disk revealed by the piggyback line observations of the FAST GPPS survey
• The correlation between WISE 12 $\mu$m emission and molecular gas tracers on sub-kpc scales in nearby star-forming galaxies
• Gamma-ray observation towards the young massive star cluster NGC 6618 in the M17 region
• The "Maggie" filament: Physical properties of a giant atomic cloud
• In search of infall motion in molecular clumps III: HCO+ (1-0) and H13CO+ (1-0) mapping observations toward the confirmed infall sources
• SNR G39.2-0.3, an Hadronic Cosmic Rays Accelerator
• AFGL 5180 and AFGL 6366S: sites of hub-filament systems at the opposite edges of a filamentary cloud
• CO Outflow Candidates Toward the W3/4/5 Complex I: The Sample and its Spatial Distribution
• On the Beam Filling Factors of Molecular Clouds
• Ultra-high Energy Gamma-rays from Past Explosions in our Galaxy
• Improved Measurements of Molecular Cloud Distances Based on Global Search
• Dependence of Molecular Cloud Samples on Angular Resolution, Sensitivity, and Algorithms
• Three isotopologues CO survey of Molecular Clouds in the CMa OB1 complex
• FacetClumps: A Facet-based Molecular Clump Detection Algorithm
• The filamentary structures in the CO emission toward the Milky Way disk
• High energy gamma-ray emission powered by a young protostar: the case of S255 NIRS 3
• Molecular Gas Structures traced by ${}^{13}$CO Emission in the 18,190 ${}^{12}$CO Molecular Clouds from the MWISP Survey
• A new analytic approach to infer the cosmic-ray ionization rate in hot molecular cores from HCO${}^{+}$, N${}_2$H${}^{+}$, and CO observations
• Revealing Gas Inflows towards the Galactic Central Molecular Zone
• A Large-field J=1-0 Survey of CO and Its Isotopologues Toward the Cassiopeia A Supernova Remnant
• Astronomical image denoising by self-supervised deep learning and restoration processes
• Distributions and Physical Properties of Molecular Clouds in the Third Galactic Quadrant: $l$ = [219.75, 229.75]${}^{\circ }$ and $b$ = [-5.25, 5.25]${}^{\circ }$
• The Cassiopeia Filament: A Blown Spur of the Local Arm
• A Cold and Diffuse Giant Molecular Filament in the Region of $l=41^{\circ }$, $b=-1^{\circ }$
• A Herschel study of G214.5-1.8: a young, cold and quiescent giant molecular filament on the shell of a HI superbubble
• Gravitationally Bound Gas Determines Star Formation in the Galaxy
• Evidence for particle acceleration approaching PeV energies in the W51 complex
• Star-forming site RAFGL 5085: Is a perfect candidate of hub-filament system ?
• The Role of Magnetic Fields in the Formation of the Filamentary Infrared Dark Cloud G11.11-0.12
• CO Emission Delineating the Interface between the Milky Way Nuclear Wind Cavity and the Gaseous Disk
• Dissecting the emission from LHAASO J0341+5258: implications for future multi-wavelength observations
• Probing the Global Dust Properties and Cluster Formation Potential of the Giant Molecular Cloud G148.24+00.41
• On the Spatial Distribution of ${}^{13}$CO Structures within ${}^{12}$CO Molecular Clouds
• New method for estimating molecular cloud distances based on Gaia, 2MASS, and the TRILEGAL galaxy model
• Multi log-normal density structure in Cygnus-X molecular clouds: A fitting for N-PDF without power-law
• Diagnosing Triggered Star Formation in the Galactic H II region Sh 2-142
• Star and Cluster Formation in the Sh2-112 Filamentary Cloud Complex
• Bimodal orientation distribution and head-tail asymmetry of a sample of filamentary molecular clouds
• Sustaining Star Formation in the Galactic Star Cluster M 36?
• Preliminary analysis on the noise characteristics of MWISP data
• Searching for further evidence for cloud-cloud collisions in L1188
• Tracing the Formation of Molecular Clouds in a Low-Metallicity Galaxy: A HI Narrow Self-Absorption Survey of the Large Magellanic Cloud
• In search for infalling clumps in molecular clouds -- A catalogue of CO blue-profiles
• Detection of diffuse gamma-ray emission towards a massive star forming region hosting Wolf-Rayet stars
• Autonomous Gaussian decomposition of the Galactic Ring Survey. II. The Galactic distribution of 13CO
• Gas Transfer Between the Inner 3-kpc Disk and the Galactic Central Molecular Zone
• Large-field CO (J=1-0) observations toward SNR G150.3+4.5
• Molecular Clouds in the Galactic Plane from $l$ = [59.75${}^{\circ }$, 74.75${}^{\circ }$] and $b$ = [$-$5.25${}^{\circ }$, +5.25${}^{\circ }$]
• Molecular Clouds Associated with {H \small{II}} regions and Candidates within l = 106.65${}^{\circ }$ to 109.50${}^{\circ }$ and b = $-$1.85${}^{\circ }$ to 0.95${}^{\circ }$
• The Pristine Inner Galaxy Survey (PIGS) VI: Different vertical distributions between two DIBs at 442.8 nm and 862.1 nm
• CU-JADE: A Method for Traversing Extinction Jumps along the Line of Sight
• On the Flux-Intensity Relation of Molecular Clouds
• Study of Ultra-High-Energy Gamma-Ray Source 1LHAASO J0056+6346u and Its Possible Origins
• Searching for TeV emission from LHAASO J0341+5258 with VERITAS and HAWC
• Investigations of MWISP Filaments. I. Filament Identification and Analysis Algorithms, and Source Catalogue
• Examining Turbulence in Galactic Molecular Clouds -- I: A Statistical Analysis of Velocity Structures
• Cold atomic gas identified by HI self-absorption. Cold atomic clouds toward giant molecular filaments
• Molecular Clouds at the Edge of the Galaxy I. Variation of CO J=2-1/1-0 Line Ratio
• Dense Molecular Ring-like structure in gaseous CO depletion region G34.74-0.12
• A three-dimensional reconstruction of the interstellar magnetic field toward a star-forming region
• Anisotropy in the carbon monoxide (CO) line emission across the Milky Way's disk
• Molecular cloud matching in CO and dust in M33 II. Physical properties of giant molecular clouds
• The traveling-PWN modeling attempt on the enigmatic LHAASO dumbbell-like structure
• Evidence for the gravity-driven and magnetically-regularized gas flows feeding the massive protostellar cluster in Cepheus A
• Investigation of the Microquasar SS 433 with VERITAS
• Molecular Clouds at the Edge of the Galaxy II. Physical properties and scaling relations
• Examinations of CO completeness based on three independent CO surveys
• Fermi-LAT detection of extended gamma-ray emission in the vicinity of SNR G045.7$-$00.4: evidence for escaping cosmic rays interacting with the surrounding molecular clouds
• Investigations of MWISP Bubbles: Identification and Analysis of Enclosed Molecular Bubbles by Weight Fields
• CO Structures with Narrow Lines in Nearby Quiescent Regions
• FIRESTORM I: Stellar Feedback and Gas Kinematics in the Evolved W40 Hub-Filament System
• First Submillimeter Lights from Dome A: Tracing the Carbon Cycle in the Feedback of Massive Stars
• How is Cold Gas Loaded into Galactic Nuclear Outflows?