@article{01GQF1A556WA7A4N4ET21XY88A,
  abstract     = {{We present the first measurements of H I galaxy scaling relations from a blind survey at z > 0.15. We perform spectral stacking of 9023 spectra of star-forming galaxies undetected in H I at 0.23 < z < 0.49, extracted from MIGHTEE-H I Early Science data cubes, acquired with the MeerKAT radio telescope. We stack galaxies in bins of galaxy properties (stellar mass M *, star formation rateSFR, and specific star formation rate sSFR, with sSFR ≡ M */SFR), obtaining ≳5σ detections in most cases, the strongest H I-stacking detections to date in this redshift range. With these detections, we are able to measure scaling relations in the probed redshift interval, finding evidence for a moderate evolution from the median redshift of our sample z med ~ 0.37 to z ~ 0. In particular, low-M * galaxies ( {\mathrm{log}}_{10}({M}_{* }/{M}_{\odot })\sim 9 )experienceastrongHIdepletion( 0.5dexinlog10(MHI/M⊙)
  ), while massive galaxies ( {\mathrm{log}}_{10}({M}_{* }/{M}_{\odot })\sim 11$ ) keep their H I mass nearly unchanged. When looking at the star formation activity, highly star-forming galaxies evolve significantly in M H I (f H I, where f H I ≡ M H I/M *) at fixed SFR (sSFR), while at the lowest probed SFR (sSFR) the scaling relations show no evolution. These findings suggest a scenario in which low-M * galaxies have experienced a strong H I depletion during the last ~5 Gyr, while massive galaxies have undergone a significant H I replenishment through some accretion mechanism, possibly minor mergers. Interestingly, our results are in good agreement with the predictions of the SIMBA simulation. We conclude that this work sets novel important observational constraints on galaxy scaling relations.}},
  articleno    = {{L13}},
  author       = {{Sinigaglia, Francesco and Rodighiero, Giulia and Elson, Ed and Vaccari, Mattia and Maddox, Natasha and Frank, Bradley S. and Jarvis, Matt J. and Oosterloo, Tom and Davé, Romeel and Salvato, Mara and Baes, Maarten and Bellstedt, Sabine and Bisigello, Laura and Collier, Jordan D. and Cook, Robin H. W. and Davies, Luke J. M. and Delhaize, Jacinta and Driver, Simon P. and Foster, Caroline and Kurapati, Sushma and P. Lagos, Claudia del and Lidman, Christopher and Mancera Piña, Pavel E. and Meyer, Martin J. and Mogotsi, K. Moses and Pan, Hengxing and Ponomareva, Anastasia A. and Prandoni, Isabella and Rajohnson, Sambatriniaina H. A. and Robotham, Aaron S. G. and Santos, Mario G. and Sekhar, Srikrishna and Spekkens, Kristine and Thorne, Jessica E. and van der Hulst, Jan M. and Wong, O. Ivy}},
  issn         = {{2041-8205}},
  journal      = {{ASTROPHYSICAL JOURNAL LETTERS}},
  keywords     = {{Galaxy formation,Galaxy evolution,Emission line galaxies,Astronomical methods,Radio astronomy}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{9}},
  publisher    = {{American Astronomical Society}},
  title        = {{MIGHTEE-HI : evolution of HI scaling relations of star-forming galaxies at z < 0.5}},
  url          = {{http://doi.org/10.3847/2041-8213/ac85ae}},
  volume       = {{935}},
  year         = {{2022}},
}

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