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Optimization of Moment Masking for CO Spectral Line Surveys

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arxiv 1101.1499 v1 pith:YJARB67C submitted 2011-01-07 astro-ph.IM astro-ph.GA

classification astro-ph.IMastro-ph.GA
keywords surveyslinemaskingmomentnoisespectraladdedapplying
verification ladder T0 review T1 audit T2 compute T3 formal
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We describe and refine the masked moment method used to suppress noise in Galactic and extragalactic spectral line surveys. By applying the refined technique to an essentially noise-free CO molecular cloud survey with Gaussian noise added, we determine the optimum masking parameters for typical CO surveys such as those presented in Dame et al. (2001, ApJ, 547, 792)

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Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Molecular Gas Distribution toward the Inner and Outer Galaxy Revealed by MWISP -- the Galactic Longitude 45\deg--60\deg and 120\deg--130\deg

    astro-ph.GA 2025-08 conditional novelty 6.0 of 10

    A 24,724-cloud catalog from the MWISP CO survey reveals nearby sheet-like curtain clouds, interarm spurs, a ~220 pc inner molecular disk thickness, and a falling cloud velocity dispersion with galactocentric radius.

  2. Cosmic-ray and Interstellar Gas Properties in the Solar Neighborhood Revealed by Diffuse Gamma Rays

    astro-ph.HE 2025-06 conditional novelty 6.0 of 10

    Gamma-ray emissivities of local gas agree with directly measured cosmic-ray spectra after correcting for optically thick HI, with a ~10% gradient toward the inner Galaxy and CO-dark H2 dominating small clouds.

  3. Statistical Properties of Molecular Clouds in the Milky Way: Insights from Three-Isotopologue CO Observations of the MWISP Project

    astro-ph.GA 2026-06 unverdicted novelty 5.0 of 10

    Analysis of 3161 molecular clouds reveals oblate shapes aligned with the galactic plane, a flatter velocity dispersion-size relation than Larson's law, strong mass-size correlation, and that 12CO traces diffuse turbul...

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    astro-ph.GA 2025-07 accept novelty 5.0 of 10

    First sphere-of-influence-resolving CO dynamical measurement gives the NGC 1574 black hole a mass of (6.2 +/- 1.2) x 10^7 solar masses.

  5. The Close AGN Reference Survey (CARS): A comparison between sub-mm and optical AGN diagnostic diagrams

    astro-ph.GA 2025-07 accept novelty 5.0 of 10

    Three of five type-1 AGN observed with ALMA follow the dense gas to star formation scaling relation, and optical and sub-millimetre excitation classifications agree where all lines are detected.

  6. Revisiting the supermassive black hole mass of NGC 7052 using high spatial resolution molecular gas observed with ALMA

    astro-ph.GA 2025-09 conditional novelty 4.0 of 10

    A new ALMA-based dynamical model confirms the central black hole of NGC 7052 weighs about 2.5 billion solar masses and revises the galaxy's I-band stellar mass-to-light ratio down by 10%.

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