Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: HI study of isolated and pair galaxies: the MIR SFR-M$\star$ sequence   Using mid-infrared star formation rate and stellar mass indicators in
$\textit{WISE}$, we construct and contrast the relation between star formation
rate and stellar mass for isolated and paired galaxies. Our samples comprise a
selection of AMIGA (isolated galaxies) and pairs of ALFALFA galaxies with HI
detections such that we can examine the relationship between HI content (gas
fraction, HI deficiency) and galaxy location on the main sequence (MS) in these
two contrasting environments. We derive for the first time an HI scaling
relation for isolated galaxies using $\textit{WISE}$ stellar masses, and
thereby establish a baseline predictor of HI content that can be used to assess
the impact of environment on HI content when compared with samples of galaxies
in different environments. We use this updated relation to determine the HI
deficiency of both our paired and isolated galaxies. Across all the quantities
examined as a function of environment in this work (MS location, gas fraction,
and HI deficiency), the AMIGA sample of isolated galaxies is found to have the
lower dispersion: $\sigma_{\rm{AMIGA}} = 0.37$ versus $\sigma_{\rm{PAIRS}} =
0.55$ on the MS, $\sigma_{\rm{AMIGA}} = 0.44$ versus $\sigma_{\rm{PAIRS}} =
0.54$ in gas fraction, and $\sigma_{\rm{AMIGA}} = 0.28$ versus
$\sigma_{\rm{PAIRS}} = 0.34$ in HI deficiency. We also note fewer isolated
quiescent galaxies, 3 (0.6$\%$), compared to 12 (2.3$\%$) quiescent pair
members. Our results suggest the differences in scatter measured between our
samples are environment driven. Galaxies in isolation behave relatively
predictably, and galaxies in more densely populated environments adopt a more
stochastic behaviour, across a broad range of quantities.

17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
16
The categories of this paper are: stat