An atomic hydrogen bridge fueling NGC 4418 with gas from VV 655

  title={An atomic hydrogen bridge fueling NGC 4418 with gas from VV 655},
  author={Eskil Varenius and Francesco Costagliola and H-R. Klockner and Susanne Aalto and H. W. W. Spoon and Iv'an Mart'i-Vidal and John Conway},
  journal={arXiv: Astrophysics of Galaxies},
The galaxy NGC 4418 harbours a compact ($<20$ pc) core with a very high bolometric luminosity ($\sim10^{11}$L$_\odot$). As most of the galaxy's energy output comes from this small region, it is of interest to determine what fuels this intense activity. An interaction with VV 655 has been proposed, where gas aquired by NGC 4418 could trigger intense star formation and/or black hole accretion in the centre. We aim to constrain the interaction hypothesis by studying neutral hydrogen structures… 

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