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

More documents

Recommendations

Info

1. Measure CO, HI & dust at each point in region. 2. Measure scatter in DGR at various αCO. 3. Find minimum in scatter. 4. Minimum scatter = most “uniform” DGR in region = best-fit αCO & DGR
The Observations DGR = ΣD/(ΣHI +αCOICO) KINGFISH Key Insights into Nearby Galaxies: A Far-IR Survey with Herschel 70-500 µm imaging & spectroscopy of 62 nearby galaxies with Herschel Kennicutt et al. 2011 3.6 - 24 µm from SINGS and LVL. (Kennicutt et al. 2003, Dale et al. 2009) To get ΣD: SED modeling from 3.6 - 350 µm (Aniano+ 2012) (preserves SPIRE 350 µm’s 25” resolution while still covering the peak of the dust SED)
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: Example of the Technique
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 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 ...

Create successful ePaper yourself

Delete template?

Save as template?