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astro-ph.IM2012★ 61 cited
The Gaia spectrophotometric standard stars survey. I. Preliminary results
E. Pancino, G. Altavilla, S. Marinoni +23
We describe two ground based observing campaigns aimed at building a grid of approximately 200 spectrophotometric standard stars (SPSS), with an internal ~1% precision and tied to…
astro-ph.GA2012★ 45 cited
C and N abundances of MS and SGB stars in NGC 1851
C. Lardo, A. P. Milone, A. F. Marino +6
We present the first chemical analysis of stars on the double subgiant branch (SGB) of the globular cluster NGC 1851. We obtained 48 Magellan IMACS spectra of subgiants and fainter…