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- W3100643091 abstract "New observations of CO (J = 1 → 0) line emission from M33, using the 25 element BEARS focal plane array at the Nobeyama Radio Observatory 45 m telescope, in conjunction with existing maps from the BIMA interferometer and the FCRAO 14 m telescope, give the highest resolution (13'') and most sensitive (σrms ~ 60 mK) maps to date of the distribution of molecular gas in the central 5.5 kpc of the galaxy. A new catalog of giant molecular clouds (GMCs) has a completeness limit of 1.3 × 105 M☉. The fraction of molecular gas found in GMCs is a strong function of radius in the galaxy, declining from 60% in the center to 20% at galactocentric radius Rgal ≈ 4 kpc. Beyond that radius, GMCs are nearly absent, although molecular gas exists. Most (90%) of the emission from low-mass clouds is found within 100 pc projected separation of a GMC. In an annulus 2.1 kpc < Rgal < 4.1 kpc, GMC masses follow a power-law distribution with index -2.1. Inside that radius, the mass distribution is truncated, and clouds more massive than 8 × 105 M☉ are absent. The cloud mass distribution shows no significant difference in the grand-design spiral arms versus the interarm region. The CO surface brightness ratio for the arm to interarm regions is 1.5, typical of other flocculent galaxies." @default.
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- W3100643091 date "2007-06-01" @default.
- W3100643091 modified "2023-09-27" @default.
- W3100643091 title "High‐Resolution Molecular Gas Maps of M33" @default.
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- W3100643091 doi "https://doi.org/10.1086/516621" @default.
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