Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Interpretation of Far-infrared Spectral Energy Distributions. I:
  The 850 $\mu$m Molecular Mass Estimator   We use a suite of cosmological zoom galaxy formation simulations and dust
radiative transfer calculations to explore the use of the monochromatic
$850~\mu m$ luminosity (L$_{\rm \nu,850}$) as a molecular gas mass (M$_{\rm
mol}$) estimator in galaxies between $0 < z < 9.5$ for a broad range of masses.
For our fiducial simulations, where we assume the dust mass is linearly related
to the metal mass, we find that empirical L$_{\rm \nu,850}$-M$_{\rm mol}$
calibrations accurately recover the molecular gas mass of our model galaxies,
and that the L$_{\rm \nu,850}$-dependent calibration is preferred. We argue the
major driver of scatter in the L$_{\rm \nu,850}$-M$_{\rm mol}$ relation arises
from variations in the molecular gas to dust mass ratio, rather than variations
in the dust temperature, in agreement with the previous study of Liang et al.
Emulating a realistic measurement strategy with ALMA observing bands that are
dependent on the source redshift, we find that estimating S$_{\rm \nu,850}$
from continuum emission at a different frequency contributes $10-20\%$ scatter
to the L$_{\rm \nu,850}$-M$_{\rm mol}$ relation. This additional scatter arises
from a combination of mismatches in assumed T$_{dust}$ and $\beta$ values, as
well as the fact that the SEDs are not single-temperature blackbodies.Finally
we explore the impact of a dust prescription in which the dust-to-metals ratio
varies with metallicity. Though the resulting mean dust temperatures are
$\sim50\%$ higher, the dust mass is significantly decreased for low-metallicity
halos. As a result, the observationally calibrated L$_{\rm \nu,850}$-M$_{\rm
mol}$ relation holds for massive galaxies, independent of the dust model, but
below L$_{\rm \nu,850}\lesssim10^{28}$ erg s$^{-1}$ (metallicities
$\log_{10}({\rm Z}/{\rm Z}_{\odot})\lesssim -0.8$) we expect galaxies may
deviate from literature observational calibrations by $\gtrsim0.5$ dex.

24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an