Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The atmospheric parameters of FGK stars using wavelet analysis of
  CORALIE spectra   Atmospheric properties of F-,G- and K-type stars can be measured by spectral
model fitting. These methods require data with good signal-to-noise ratio and
reliable continuum normalisation. This is particularly challenging for the
spectra we have obtained with the CORALIE \'{e}chelle spectrograph for FGK
stars with transiting M-dwarf companions. The spectra tend to have low
signal-to-noise ratios, which makes it difficult to analyse them using existing
methods. Our aim is to create a reliable automated spectral analysis routine to
determine $T_{\rm eff}$, [Fe/H], $V \sin i$ from the CORALIE spectra of FGK
stars. We use wavelet decomposition to distinguish between noise, continuum
trends, and stellar spectral features in the CORALIE spectra. A subset of
wavelet coefficients from the target spectrum are compared to those from a grid
of models in a Bayesian framework to determine the posterior probability
distributions of the atmospheric parameters. By testing our method using
synthetic spectra we found that our method converges on the best fitting
atmospheric parameters. We test the wavelet method on 20 FGK exoplanet host
stars for which higher quality data have been independently analysed using
equivalent width measurements. We find that we can determine $T_{\rm eff}$ to a
precision of $85$K, [Fe/H] to a precision of 0.06 dex and $V \sin i$ to a
precision of 1.35 kms$^{-1}$ for stars with $V \sin i$ $\geq$ 5 kms$^{-1}$. We
find an offset in metallicity $\approx -$0.18 dex relative to the equivelent
width fitting method. We can determine $\log g$ to a precision of $0.13$ dex
but measurements are only reliable to confirm dwarf-like surface gravity. The
wavelet method can be used to determine $T_{\rm eff}$, [Fe/H] and $V \sin i$
for FGK stars from \'{e}chelle spectra. We find that our method is self
consistent, and robust for spectra with SNR$\gtrapprox 40$.

16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org