Abundances, nucleosynthesis and chemical evolution

19-21 September 2016, Porto Alegre, Brazil

A breakthrough in chemical abundance precision has been achieved in recent years, reaching the 0.01 dex milestone through a careful line-by-line abundance analysis of high resolution high S/N spectra of stellar twins (e.g., Melendez et al. 2012; Bedell et al. 2014; Ramirez et al. 2015; Nissen 2015; Teske et al. 2016). Precise stellar parameters can also be obtained, resulting in reliable ages for solar twins (Ramirez et al. 2014; Tucci Maia et al. 2016), allowing to study for the first time the detailed nucleosynthetic history of the Milky Way through abundance ratios as a function of stellar ages rather than just [Fe/H]. The precise abundance ratios vs. age provided by solar twins, could help to make a major step forward towards constraining nucleosynthesis and galactic chemical evolution (Nissen 2015, 2016; Spina et al. 2016). Furthermore, the study of solar twins and solar analogs is being important to study potential planet signatures (e.g., Melendez et al. 2009; Ramirez et al. 2009, 2011; Biazzo et al. 2015; Saffe et al. 2016), habitability (Unterborn et al. 2015; do Nascimento et al. 2016) and signatures of stellar evolution (e.g., Schirbel et al. 2015, Tucci Maia et al. 2015, Carlos et al. 2016).

The first Precision Spectroscopy workshop (Sao Paulo, 2015), aimed to discuss the high precision line-by-line abundance technique, and their implications regarding planets, stellar evolution and galactic evolution. Precision Spectroscopy 2016 aims to discuss stellar evolution, nucleosynthesis and chemical evolution, to provide a better understanding of the new chemical abundance constraints. As in 2015, the workshop will consist of lectures by invited speakers, oral contributions by participants, and likely some practical activities. The main lecturers will be Amanda Karakas (Monash, Australia) and Chiaki Kobayashi (Hertfordshire, UK), recognised experts on nucleosynthesis and chemical evolution.

Precision Spectroscopy 2016 will be held in Porto Alegre, in Southern Brazil. Applications will be received until noon GMT, July 19, 2016 (Tuesday). The outcome will be released about one or two weeks later. Successful applicants will be required to pay a small registration fee (50 euros for participants from abroad, and 150 reais for local participants). Notice that financial aid is not available, albeit we could try to lower the cost of your registration fee, if you require so. Also, we will try to organize hotel room sharing.

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