Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Solar and Stellar Photospheric Abundances   The determination of photospheric abundances in late-type stars from
spectroscopic observations is a well-established field, built on solid
theoretical foundations. Improving those foundations to refine the accuracy of
the inferred abundances has proven challenging, but progress has been made. In
parallel, developments on instrumentation, chiefly regarding multi-object
spectroscopy, have been spectacular, and a number of projects are collecting
large numbers of observations for stars across the Milky Way and nearby
galaxies, promising important advances in our understanding of galaxy formation
and evolution. After providing a brief description of the basic physics and
input data involved in the analysis of stellar spectra, a review is made of the
analysis steps, and the available tools to cope with large observational
efforts. The paper closes with a quick overview of relevant ongoing and planned
spectroscopic surveys, and highlights of recent research on photospheric
abundances.

5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom