Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stellar noise and planet detection. II. Radial-velocity noise induced by
  magnetic cycles   For the 451 stars of the HARPS high precision program, we study correlations
between the radial-velocity (RV) variation and other parameters of the Cross
Correlated Function (CCF). After a careful target selection, we found a very
good correlation between the slope of the RV-activity index (log(R'HK)
correlation and the Teff for dwarf stars. This correlation allow us to correct
RV from magnetic cycles given the activity index and the Teff.

2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph