Kinematical mapping of the outskirts of elliptical galaxies using the OSIRIS tunable lters at GTC: a novel approach

Bibcode
2013hsa7.conf..275M
Martín-Navarro, I.; Vazdekis, A.; Bongiovanni, A.; Falcón-Barroso, J.; Cepa, J.; Cenarro, J.; Sánchez-Blázquez, P.
Referencia bibliográfica

Highlights of Spanish Astrophysics VII, Proceedings of the X Scientific Meeting of the Spanish Astronomical Society (SEA), held in Valencia, July 9 - 13, 2012, Eds.: J.C. Guirado, L.M. Lara, V. Quilis, and J. Gorgas., pp.275-280

Advertised on:
5
2013
Número de autores
7
Número de autores del IAC
5
Número de citas
0
Número de citas referidas
0
Descripción
We have developed an innovative `index scanning technique" to map the stellar kinematics of early-type galaxies by measuring for the first time the absorption line strength of the near-IR CaII triplet with the Red Tunable Filters of OSIRIS at GTC. Unlike classical spectroscopy, these filters allow us to perform a two-dimensional study, taking advantage of a 10.4 meter class telescope with a unvignetted field of view of 7.8 × 7.8 arcmin. We show the velocity fields obtained for two Virgo elliptical galaxies of very different masses and their globular cluster systems reaching galactocentric distances beyond 2 effective radii.
Tipo
Sin árbitro

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