Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: History of Star Formation of Early Type Galaxies from Integrated Light:
  Clues from Stellar Ages and Abundances   I briefly review what has been recently learned from determinations of mean
stellar ages and abundances from integrated light studies of early-type
galaxies, and discuss some new questions posed by recent data. A short
discussion of spectroscopic ages is presented, but the main focus of this
review is on the abundances of Fe, Mg, Ca, N, and C, obtained from comparisons
of measurements taken in integrated spectra of galaxies with predictions from
stellar population synthesis models.

33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas