Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The End of the White Dwarf Cooling Sequence in M4: an efficient approach   We use 14 orbits of ACS observations to reach the end of the white-dwarf
cooling sequence in the globular cluster M4. Our photometry and completeness
tests show that the end is located at magnitude m_F606W = 28.5+/-0.1, which
implies an age of 11.6+/-0.6 Gyr (internal errors only). This is consistent
with the age from fits to the main sequence turn-off (12.0+/-1.4 Gyr).

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The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
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The categories of this paper are: solv-int
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The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
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The categories of this paper are: alg-geom
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The categories of this paper are: quant-ph
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The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
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The categories of this paper are: mtrl-th
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The categories of this paper are: chao-dyn