Star Formation and Molecular Gas Diagnostics with Mid- and Far-infrared Emission

0583798 - ASÚ 2024 RIV GB eng J - Journal Article
Whitcomb, C.M. … Total 4 authors
Star Formation and Molecular Gas Diagnostics with Mid- and Far-infrared Emission.
Astrophysical Journal. Roč. 948, č. 2 (2023), č. článku 88. ISSN 0004-637X. E-ISSN 1538-4357
Research Infrastructure: EU-ARC.CZ III - 90259
Keywords : molecular gas * polycyclic aromatic hydrocarbons * star forming regions
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 4.9, year: 2022
Method of publishing: Open access
https://doi.org/10.3847/1538-4357/acc316

With the start of JWST observations, mid-infrared (MIR) emission features from polycyclic aromatic hydrocarbons (PAHs), H2 rotational lines, fine structure lines from ions, and dust continuum will be widely available tracers of gas and star formation rate (SFR) in galaxies at various redshifts. Many of these tracers originate from dust and gas illuminated by UV photons from massive stars, so they generally trace both SFR and gas to varying degrees. We investigate how MIR spectral features from 5-35 μm and photometry from 3.4-250 μm correlate with SFR and molecular gas. In general, we find MIR emission features (i.e., PAHs and H2 rotational lines) trace both CO and SFR better than CO and SFR trace one another. H2 lines and PAH features correlate best with CO.
Permanent Link: https://hdl.handle.net/11104/0351795