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A new algorithm for optimizing the wavelength coverage for spectroscopic studies : Spectral Wavelength Optimization Code (swoc)

Ruchti, G. R. LU ; Feltzing, S. LU ; Lind, K.; Caffau, E.; Korn, A. J.; Schnurr, O.; Hansen, C. J.; Koch, A.; Sbordone, L. and de Jong, R. S. (2016) In Monthly Notices of the Royal Astronomical Society 461(2). p.2174-2191
Abstract

The past decade and a half has seen the design and execution of several ground-based spectroscopic surveys, both Galactic and Extragalactic. Additionally, new surveys are being designed that extend the boundaries of current surveys. In this context, many important considerations must be done when designing a spectrograph for the future. Among these is the determination of the optimum wavelength coverage. In this work, we present a new code for determining the wavelength ranges that provide the optimal amount of information to achieve the required science goals for a given survey. In its first mode, it utilizes a user-defined list of spectral features to compute a figure-of-merit for different spectral configurations. The second mode... (More)

The past decade and a half has seen the design and execution of several ground-based spectroscopic surveys, both Galactic and Extragalactic. Additionally, new surveys are being designed that extend the boundaries of current surveys. In this context, many important considerations must be done when designing a spectrograph for the future. Among these is the determination of the optimum wavelength coverage. In this work, we present a new code for determining the wavelength ranges that provide the optimal amount of information to achieve the required science goals for a given survey. In its first mode, it utilizes a user-defined list of spectral features to compute a figure-of-merit for different spectral configurations. The second mode utilizes a set of flux-calibrated spectra, determining the spectral regions that show the largest differences among the spectra. Our algorithm is easily adaptable for any set of science requirements and any spectrograph design. We apply the algorithm to several examples, including 4MOST, showing the method yields important design constraints to the wavelength regions.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Instrumentation: spectrographs, Stars: abundances, Stars: fundamental parameters, Surveys, Techniques: spectroscopic
in
Monthly Notices of the Royal Astronomical Society
volume
461
issue
2
pages
18 pages
publisher
Wiley-Blackwell
external identifiers
  • scopus:84982295587
  • wos:000383273600079
ISSN
0035-8711
DOI
10.1093/mnras/stw1351
language
English
LU publication?
yes
id
4d2baf8a-249d-4e62-a90a-271afb2534fd
date added to LUP
2016-11-04 12:54:28
date last changed
2017-06-16 14:41:19
@article{4d2baf8a-249d-4e62-a90a-271afb2534fd,
  abstract     = {<p>The past decade and a half has seen the design and execution of several ground-based spectroscopic surveys, both Galactic and Extragalactic. Additionally, new surveys are being designed that extend the boundaries of current surveys. In this context, many important considerations must be done when designing a spectrograph for the future. Among these is the determination of the optimum wavelength coverage. In this work, we present a new code for determining the wavelength ranges that provide the optimal amount of information to achieve the required science goals for a given survey. In its first mode, it utilizes a user-defined list of spectral features to compute a figure-of-merit for different spectral configurations. The second mode utilizes a set of flux-calibrated spectra, determining the spectral regions that show the largest differences among the spectra. Our algorithm is easily adaptable for any set of science requirements and any spectrograph design. We apply the algorithm to several examples, including 4MOST, showing the method yields important design constraints to the wavelength regions.</p>},
  author       = {Ruchti, G. R. and Feltzing, S. and Lind, K. and Caffau, E. and Korn, A. J. and Schnurr, O. and Hansen, C. J. and Koch, A. and Sbordone, L. and de Jong, R. S.},
  issn         = {0035-8711},
  keyword      = {Instrumentation: spectrographs,Stars: abundances,Stars: fundamental parameters,Surveys,Techniques: spectroscopic},
  language     = {eng},
  month        = {09},
  number       = {2},
  pages        = {2174--2191},
  publisher    = {Wiley-Blackwell},
  series       = {Monthly Notices of the Royal Astronomical Society},
  title        = {A new algorithm for optimizing the wavelength coverage for spectroscopic studies : Spectral Wavelength Optimization Code (swoc)},
  url          = {http://dx.doi.org/10.1093/mnras/stw1351},
  volume       = {461},
  year         = {2016},
}