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Title: Near-IR Spectroscopy of CEMP Stars with SOAR/OSIRIS
Authors: Kennedy, C. R
Sivarani, T
Beers, T. C
Rossi, S
Placco, V. M
Johnson, J
Masseron, T
Keywords: Stars: abundances;Stars: carbon;Galaxy: halo, surveys
Issue Date: Mar-2010
Publisher: Cambridge University Press
Citation: K. Cunha, M. Spite & B Barbuy, eds., Chemical abundances in the Universe: connecting first Stars to Planets, Proceedings IAU Symposium No. 265, 2009, pp. 126-127
Series/Report no.: IAU Symposium and Colloquium Proceedings Series; Vol. 265
Abstract: We report on medium-resolution near-IR spectroscopy of a sample of over 60 Carbon- Enhanced Metal-Poor (CEMP) stars observed with SOAR/OSIRIS, selected from the HK survey of Beers and colleagues and the Hamburg/ESO Survey of Christlieb and colleagues. Oxygen abundances from the molecular CO lines as well as rough estimates of 12C/13C ratios are estimated from the near-IR spectra of these stars. Near-IR model spectra with varying oxygen abundances, in combination with previously determined parameters from optical spectra are used for the estimation of abundances for this sample. As both oxygen abundances and 12C/13C ratios are tracers of nucleosynthesis, we hope to gain information about Galactic nucleosynthesis through the analysis of this sample.
Description: Restricted Access
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Appears in Collections:IIAP Publications

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