First scientific observations with MEGARA at GTC

Gil de Paz, A.; Carrasco, E.; Gallego, J.; Iglesias-Páramo, J.; Cedazo, R.; García-Vargas, M. L.; Arrillaga, X.; Avilés, J. L.; Bouquin, A.; Carbajo, J. et al.
Bibliographical reference

Proceedings of the SPIE, Volume 10702, id. 1070217 20 pp. (2018).

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On June 25th 2017, the new intermediate-resolution optical IFU and MOS of the 10.4-m GTC had its first light. As part of the tests carried out to verify the performance of the instrument in its two modes (IFU and MOS) and 18 spectral setups (identical number of VPHs with resolutions R=6000-20000 from 0.36 to 1 micron) a number of astronomical objects were observed. These observations show that MEGARA@GTC is called to fill a niche of high-throughput, intermediateresolution IFU and MOS observations of extremely-faint narrow-lined objects. Lyman-α absorbers, star-forming dwarfs or even weak absorptions in stellar spectra in our Galaxy or in the Local Group can now be explored to a new level. Thus, the versatility of MEGARA in terms of observing modes and spectral resolution and coverage will allow GTC to go beyond current observational limits in either depth or precision for all these objects. The results to be presented in this talk clearly demonstrate the potential of MEGARA in this regard.
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