English

Eleven Local Volume dwarf galaxies in the FASHI survey

Astrophysics of Galaxies 2025-09-17 v1

Abstract

We determined HI parameters for eleven nearby late-type dwarf galaxies using FASHI data cubes, despite the fact that the first version of the FASHI catalog does not list any radio sources that could correspond to these galaxies. Four of them are probable peripheral satellites of the bright spiral galaxies: NGC 3556, NGC 4258, NGC 4274, NGC 4490, while others are isolated objects. The considered sample has the following median parameters: a heliocentric velocity of Vh=542 km/sV_\mathrm{h} = 542 \ km/s, an HI-line width of W50=28 km/sW_\mathrm{50} = 28 \ km/s, an hydrogen mass of log(MHI/M)=6.83\log (M_{HI} / M_\odot) = 6.83, a stellar mass of log(M/M)=7.19\log (M_\star / M_\odot) = 7.19, and a specific star formation rate of sSFR=10.17 yr1\mathrm{sSFR} = -10.17 \ yr^{-1}.

Keywords

Cite

@article{arxiv.2509.12828,
  title  = {Eleven Local Volume dwarf galaxies in the FASHI survey},
  author = {Aleksandra Nazarova and Dmitry Makarov and Igor Karachentsev and Chuan-Peng Zhang and Ming Zhu},
  journal= {arXiv preprint arXiv:2509.12828},
  year   = {2025}
}

Comments

Accepted for publication in Research in Astronomy and Astrophysics