Measurements of the CO-to-H 2 Conversion Factor and Dust-to-Gas ...

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NGC 6946 0.2 dex radial profiles from Schruba+ 2011
Variations we see in αCO • MW α CO, no trend with radius. • Flat MW α CO profile + central unresolved dip. • Overall gradient in α CO with radius. • Low α CO everywhere, no clear radial trend. illustrated with a few examples of ~face-on, highly resolved galaxies
Page 1 and 2: Measurements of the CO-to-H2 Conver
Page 3 and 4: Other ways to trace the total amoun
Page 5 and 6: Other ways to trace the total amoun
Page 7 and 8: Measuring the Conversion Factor wit
Page 9 and 10: Our Technique: Minimizing Scatter i
Page 11 and 12: Our Technique: Minimizing Scatter i
Page 13 and 14: Example of the Technique
Page 15 and 16: The Observations DGR = ΣD/(ΣHI +
Page 17 and 18: The Observations DGR = ΣD/(ΣHI +
Page 19 and 20: NGC0628 Results
Page 27 and 28: Variations we see in αCO • MW α
Page 29 and 30: NGC 0628 0.2 dex radial profiles fr
Page 31 and 32: Variations we see in αCO • MW α
Page 37: NGC 6946 0.2 dex radial profiles fr
Page 41 and 42: What drives variations in αCO? NGC
Page 43 and 44: Dust-to-Gas Ratio Linear trend with
Page 45 and 46: Metallicity isn’t everything... I
Page 47 and 48: What drives variations in αCO? αC
Page 49 and 50: Azimuthal Variations in NGC 6946 Lo
Page 51 and 52: Disagreement with Virial Mass αCO
Page 53 and 54: Our conversion factors makes some g

Measurements of the CO-to-H 2 Conversion Factor and Dust-to-Gas ...

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