Key points are not available for this paper at this time.
We have conducted a spectroscopic survey of 78 starbursting infrared-luminous galaxies at redshifts up to z = 0. 5. We use moderate-resolution spectroscopy of the NaI D interstellar absorption feature to directly probe the neutral phase of outflowing gas in these galaxies. Over half of our sample are ultraluminous infrared galaxies that are classified as starbursts; the rest have infrared luminosities in the range log (LIR/Lₛun) = 10. 2 - 12. 0. The sample selection, observations, and data reduction are described here. The absorption-line spectra of each galaxy are presented. We also discuss the theory behind absorption-line fitting in the case of a partially-covered, blended absorption doublet observed at moderate-to-high resolution, a topic neglected in the literature. A detailed analysis of these data is presented in a companion paper.
Rupke et al. (Thu,) studied this question.