论文标题
Megara-GTC恒星光谱库（II）。 Megastar首次发行
MEGARA-GTC Stellar Spectral Library (II). MEGASTAR First Release
论文作者
论文摘要
梅加拉（Megara）是1040万Gran望远镜加拿大省的光学整体场和基于多对象的光纤谱仪，提供了中等至高光谱的分辨率（FWHM）R $ \ simeq $ 6000，12000，20000。委托在望远镜上委托在望远镜上委托在望远镜上，从2017年开始运行，从2018年开始运行，从而创建了一种频谱。观察结果，巨型，对于正确解释Megara数据至关重要。这项工作描述了巨星首次发行的内容，由414颗恒星的光谱形成，在6420到6790 $Å$的光谱间隔中观察到的频谱为20000美元，并从8370美元到8370 $Å，从8370到8885 $Å$，并以连续的平均信号到噪声率，并以260的速度构建了杂物。 数据库。此外，我们将其包括在附录A中，该地图集具有完整的838个巨型目录的838个光谱。
MEGARA is an optical integral field and multiobject fibre based spectrograph for the 10.4m Gran Telescopio CANARIAS that offers medium to high spectral resolutions (FWHM) of R $\simeq$ 6000, 12000, 20000. Commissioned at the telescope in 2017, it started operation as a common-user instrument in 2018. We are creating an instrument-oriented empirical spectral library from MEGARA-GTC stars observations, MEGASTAR, crucial for the correct interpretation of MEGARA data. This piece of work describes the content of the first release of MEGASTAR, formed by the spectra of 414 stars observed with R $\simeq$ 20000 in the spectral intervals from 6420 to 6790 $Å$ and from 8370 to 8885 $Å$, and obtained with a continuum average signal to noise ratio around 260. We describe the release sample, the observations, the data reduction procedure and the MEGASTAR database. Additionally, we include in Appendix A, an atlas with the complete set of 838 spectra of this first release of the MEGASTAR catalogue.
