Data from the Near-Infrared Atlas of Massive Galactic O-type Spectral Standards (MaGOSS)

This dataset contains low- and high-resolution, high signal-to-noise ratio near-infrared spectra (Y-, J-, H-, and K-band) of spectroscopic standard O and early-B-type stars, spanning a wide range of spectral subtypes and luminosity classes. Data Format: The fully reduced, wavelength calibrated and normalized 1D spectra are provided in FITS format. Data Acquisition: The spectra were obtained using the Gemini Near-Infrared Spectrograph (GNIRS) on the Gemini North telescope and the Folded-port Infrared Echellette (FIRE) spectrograph on the Magellan Baade telescope. Both instruments were used in cross-dispersion mode. Data Reduction: GNIRS spectra were reduced using the IRAF-Gemini package and standard IRAF tasks for near-infrared spectroscopy reduction (e.g., nsreduce, nscombine, apall, telluric, identify). FIRE spectra were reduced using the instrument's dedicated pipeline, firehose. The reduced spectra from both instruments were trimmed to the specific wavelength ranges of interest (Y, J, H, K bands) using the IRAF task dispcor. The low-resolution version of the dataset was generated from the high-resolution spectra by convolving them with an elliptical Gaussian function using the IRAF task gauss.