NGC 3259: A Signal for an Untapped Population of Slowly Accreting Intermediate-Mass Black Holes

A spectroscopic dataset for NGC 3259 presented in the paper "NGC 3259: A Signal for an Untapped Population of Slowly Accreting Intermediate-Mass Black Holes" accepted for publication in A&A: https://arxiv.org/abs/2502.13202 Included Files This dataset includes reduced long-slit, echelle and IFU spectra, obtained for NGC 3259: Binospec_2024_obj-sky_fcal.fits - fully reduced stacked spectra for Binospec IFU lenslets ESI_2023_ngc3259_20230327_all_merged_corr.fits - fully reduced stacked 2D spectrum obtained with ESI@Keck in 2023 IDS_2014_comb_ngc3259_fcal.fits - fully reduced stacked 2D spectrum obtained with IDS@INT in 2014 ESI_2004_ngc3259_20040215_all_merged_corr.fits - fully reduced stacked 2D spectrum obtained with ESI@Keck in 2004 STIS_2000_ngc3259_sum.fits - cosmic ray cleaned stacked 2D spectrum obtained with STIS@HST in 2000