Prospects of Stellar Abundance Studies from Near-IR Spectra Observed with the E-ELT

Details Prospects of Stellar Abundance Studies from Near-IR Spectra Observed with the E-ELT Prospects of Stellar Abundance Studies from Near-IR Spectra Observed with the E-ELT

2010-02-16

arxiv.org/abs/1002.3038v2

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

Accepted for publication in Astronomische Nachrichten, AN

Scientific paper

In 2006 ESO Council authorized a Phase B study of a European AO-telescope with a 42 m segmented primary with a 5-mirror design, the E-ELT. Several reports and working groups have already presented science cases for an E-ELT, specifically exploiting the new capabilities of such a large telescope. One of the aims of the design has been to find a balance in the performances between an E-ELT and the James Webb Space Telescope, JWST. Apart from the larger photon-collecting area, the strengths of the former is the higher attainable spatial and spectral resolutions. The E-ELT AO system will have an optimal performance in the near-IR, which makes it specially advantageous. High-resolution spectroscopy in the near-infrared has, however, not been discussed much. This paper aims at filling that gap, by specifically discussing spectroscopy of stellar (mainly red giant), photospheric abundances. Based on studies in the literature of stellar abundances, at the needed medium to high spectral resolutions in the near-infrared (0.8-2.4 microns), I will try to extrapolate published results to the performance of the E-ELT and explore what could be done at the E-ELT in this field. A discussion on what instrument characteristics that would be needed for stellar abundance analyses in the near-IR will be given.

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