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Developing an astrophysical line list for Keck/Nirspec observations of red giants in the Galactic centre

Published online by Cambridge University Press:  02 August 2018

B. Thorsbro Open the ORCID record for B. Thorsbro [Opens in a new window] ,
N. Ryde Open the ORCID record for N. Ryde [Opens in a new window] ,
R. M. Rich Open the ORCID record for R. M. Rich [Opens in a new window] ,
M. Schultheis ,
T. K. Fritz  and
L. Origlia
B. Thorsbro
Affiliation:
Lund Observatory, Department of Astronomy and Theoretical Physics, Lund University, Box 43, SE-221 00 Lund, Sweden
N. Ryde
Affiliation:
Lund Observatory, Department of Astronomy and Theoretical Physics, Lund University, Box 43, SE-221 00 Lund, Sweden
R. M. Rich
Affiliation:
Department of Physics and Astronomy, UCLA, 430 Portola Plaza, Box 951547, Los Angeles, CA 90095-1547, USA
M. Schultheis
Affiliation:
Observatoire de la Côte d’Azur, CNRS UMR 7293, BP4229, Laboratoire Lagrange, F-06304 Nice Cedex 4, France
T. K. Fritz
Affiliation:
Department of Astronomy, University of Virginia, 3530 McCormick Road, Charlottesville, VA 22904, USA
L. Origlia
Affiliation:
INAF - Osservatorio Astronomico di Bologna, Via Gobetti 93/3, I-40129 Bologna, Italy
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Abstract

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A major avenue in the study of the Galaxy is the investigation of stellar populations and Galactic chemical evolution by stellar spectroscopy. Due to the dust obscuration, stars in the centre of the Galaxy can only be observed in the near-IR wavelength region. However, existing line lists in this wavelength region are demonstratively not of good enough quality for use in stellar spectroscopy. In response to this, we have developed an empirical astrophysical line list in the K-band based on modelling against the Sun and testing against Arcturus. Of ca. 700 identified interesting lines about 570 lines have been assigned empirically determined values.

Keywords

stars: atmospheresstars: late-typeGalaxy: bulgeGalaxy: centerinfrared: stars
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S334: Rediscovering our Galaxy , July 2017 , pp. 372 - 373
Copyright
Copyright © International Astronomical Union 2018 

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