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dr. Maruša Žerjal: Detection of young stars in large spectroscopic surveys

Date: 23. 5. 2017
Source: Monday physics colloquium
Ponedeljek, 29. maj 2017, ob 16:15 v predavalnici F1, FMF UL, Jadranska 19, Ljubljana

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Povzetek:

Detection of young stars in large spectroscopic surveys

dr. Maruša Žerjal

                         Faculty of Mathematics and Physics, University of Ljubljana

Stellar magnetic activity is a suitable age estimator for young solar-like stars. It manifests itself in a wide range of excess emission intensities in the strongest spectral lines. Today, in the era of large spectroscopic surveys, it is possible to identify a substantial number of young stars in the Solar neighborhood using efficient unsupervised classification algorithms. I will present a very large catalog of young stars in the RAVE survey and discuss the Galah and FunnelWeb surveys that hold a huge potential not only for the reconstruction of a recent nearby star formation events but also for the studies of young exoplanets and their environments around the nearest stars.