Toward a comprehensive characterization of L subdwarfs

May 2015 • 2015hsa8.conf..588Z

Authors • Zhang, Z. H. • Gálvez-Ortiz, M. C. • Lodieu, N. • Smart, R. L. • Burgasser, A. J. • Pinfield, D. J. • Burmingham, B. • Day-Jones, A. C. • Marocco, F. • Jones, H. R. A. • Lopéz, B. • Zapatero-Osorio, M. R.

Abstract • Subsolar metallicity L subdwarfs was discovered over a decade ago, but remain poor understood due to lack of known objects. We started to search for L subdwarfs since a few years ago and have increased the number of known L subdwarfs from 23 to 57. We are following up 33 L subdwarfs with X-shooter on the Very Large Telescope. We are also measuring parallaxes of 20 L subdwarfs with the OSIRIS on the Gran Telescopio Canarias.

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