SIMBAD references

2017ApJ...840L..18J - Astrophys. J., 840, L18-L18 (2017/May-2)

Neutral carbon emission in luminous infrared galaxies: the [C I] lines as total molecular gas tracers.

JIAO Q., ZHAO Y., ZHU M., LU N., GAO Y. and ZHANG Z.-Y.

Abstract (from CDS):

We present a statistical study of the [C i] (3P13P0), [C i] (3P23P1) lines (hereafter [C i] (1-0) and [C i] (2-1), respectively) and the CO(1-0) line for a sample of (ultra-)luminous infrared galaxies ((U)LIRGs). We explore the correlations between the luminosities of CO(1-0) and [C i] lines, and find that LCO(1–0)^′^ correlates almost linearly with both L[C I](1–0)^′^ and L[C I](2–1)^′^, suggesting that [C i] lines can trace total molecular gas mass, at least for (U)LIRGs. We also investigate the dependence of L[C I](1–0)^′/LCO(1-0)_^′^, L[C I](2–1)^′/LCO(1-0)_^′^, and L[C I](2–1)^′/L[C I](1-0)_^′^ on the far-infrared color of 60-to-100 µm, and find non-correlation, a weak correlation, and a modest correlation, respectively. Under the assumption that these two carbon transitions are optically thin, we further calculate the [C i] line excitation temperatures, atomic carbon masses, and mean [C i] line flux-to-H2 mass conversion factors for our sample. The resulting H2 masses using these [C i]-based conversion factors roughly agree with those derived from LCO(1–0)^′^ and CO-to-H2 conversion factor.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: starburst - ISM: atoms - ISM: molecules - submillimeter: galaxies - submillimeter: galaxies

Simbad objects: 78

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2021.03.08-14:14:49

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