Observational study of 100 LMC GMCs finds median 13CO(2-1)/12CO(2-1) line ratio of 0.078, nearly linear with luminosity, and higher in clouds hosting IR-bright young stellar objects.
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ALMA maps reveal offset compact CO clouds with subthermal excitation in Mrk 996, yielding a molecular gas mass of a few 10^7 solar masses and evidence for a substantial CO-dark H2 component.
Simulations constrain the mass scale for efficient ISM stripping of dwarf satellites to M_star ≲ 10^7 M_sun in MW-like halos, 0.5-1 dex below observed values, indicating additional quenching mechanisms are needed.
Dwarf irregular galaxies form stars sequentially in dispersed HI clouds and on expanding cavity rims at ~1% efficiency per free-fall time, comparable to spiral galaxy clouds but without CO due to lower metallicity.
The paper reviews dust production, destruction and growth processes in galaxies, compiles literature data on comoving dust mass density, presents evidence for and against interstellar dust growth, and identifies the high-redshift dust budget as needing further study.
citing papers explorer
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The ${}^{13}\mathrm{CO}(2{-}1)/^{12}\mathrm{CO}(2{-}1)$ Line Ratio from 100 Molecular Clouds in the Large Magellanic Cloud
Observational study of 100 LMC GMCs finds median 13CO(2-1)/12CO(2-1) line ratio of 0.078, nearly linear with luminosity, and higher in clouds hosting IR-bright young stellar objects.
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Cold molecular gas distribution and kinematics in the low-metallicity dusty starburst of Mrk 996 resolved with ALMA
ALMA maps reveal offset compact CO clouds with subthermal excitation in Mrk 996, yielding a molecular gas mass of a few 10^7 solar masses and evidence for a substantial CO-dark H2 component.
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Too Big to Quench? I. Constraining ISM Stripping of Dwarf Satellites in Milky Way-like Halos
Simulations constrain the mass scale for efficient ISM stripping of dwarf satellites to M_star ≲ 10^7 M_sun in MW-like halos, 0.5-1 dex below observed values, indicating additional quenching mechanisms are needed.
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Pervasive Cavity-Ring Structure for Star Formation in Dwarf Irregular Galaxies
Dwarf irregular galaxies form stars sequentially in dispersed HI clouds and on expanding cavity rims at ~1% efficiency per free-fall time, comparable to spiral galaxy clouds but without CO due to lower metallicity.
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Interstellar dust production, destruction and effects of dust depletion in galaxies
The paper reviews dust production, destruction and growth processes in galaxies, compiles literature data on comoving dust mass density, presents evidence for and against interstellar dust growth, and identifies the high-redshift dust budget as needing further study.