HI-MaNGA is a program of HI (21cm neutral hydrogen) followup of MaNGA galaxies (with z<0.05). Knowledge of the total HI content of MaNGA galaxies is valuable for many science cases, and will also provide targets for additional proposals for resolved HI followup, however many MaNGA targets are too far North to fall into large public blind HI surveys (e.g. the Northern limit of ALFALFA is Dec = 36 deg , Haynes et al. 2018)
We have been awarded filler time on the Robert C. Bryd Green Bank Telescope (GBT) for single dish HI followup of MaNGA galaxies and to date have been allocated 2561 hours of time across 6 years of observing (193hrs under GBT16A_095; 1281hrs under GBT17A_012; 198hrs under GBT19A_127; 580hrs under GBT20B_033; and 309hrs under GBT21B_130).
In this value added catalog we release data from the first five years of observing (data is included from observing sessions up to GBT20B_033, although not all 2020 data is included), in addition we include information about MaNGA galaxies detected by ALFALFA (measurements as documented here), as well as upper limits reported for non-detections at the sky location and optical redshift of MaNGA galaxies in the ALFALFA footprint. For our GBT observations, data reduction methods are documented in Masters et al. (2019), Goddy, Stark & Masters (2020) and Stark et al. (2021). DR3 comprises a total of 6632 HI observations for MaNGA galaxies, across 6358 unique MaNGAIDs (some galaxies have both ALFALFA and GBT data). A total of 3358 targets are from our GBT observations.
A few hundred additional MaNGA targets have been observed in the remaining 2020 and 2021 sessions at GBT (with 2021 observations ongoing); these data will be released in the future.
The datamodel for this VAC is available here. This VAC is also accessible through Marvin.
We recommend that you always use the most recent version of this VAC, which is DR17. The earlier versions of this VAC are still available on the SAS here, with datamodels available here.
