VizieR Online Data Catalog: MEGARA-GTC stellar spectral library I (Garcia-Vargas+, 2020)

The MEGARA-GTC basic stellar library currently contains 2983 stars covering wide ranges in T_eff, logg and abundance [M/H]. To define the catalogue, we made a compilation of observed stars from different libraries whose main characteristics and references are summarized in Table 3.

In terms of the spectral region, we have prioritized the library in HR-R and HR-I (R~20000) as there are no published empirical catalogues covering these spectral ranges and resolution even though they are in great demand.

We present in this paper a subsample of 97 stars that will form part of the first release of the MEGARA-GTC library. During MEGARA commissioning at the GTC (2017 June-August), we started a pilot programme whose goal was to obtain the first observations of the MEGARA-GTC library using HR-I (see Tables 5, 7 and 11). We also observed the centre of the M15 cluster in both HR-R and HR-I configurations, with the MEGARA MOS mode using the robotic positioners. The results of these observations are presented in Tables 8 and 12. Finally, we include in this paper 20 stars, also observed in HR-R and HR-I, belonging to the basic library and observed with the filler GTC programme (see Tables 6, 9, 10 and 11).

(11 data files).