Survey uncovers HI parameters for eleven dwarf galaxies, indicating potential satellite relationships.
We determined HI parameters for eleven nearby late-type dwarf galaxies using FASHI data cubes, despite their non-detection in the survey. 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 V_h = 542 km/s, an HI-line width of W_50 = 28 km/s, an hydrogen mass of log(M_HI/M_sun)= 6.83, a stellar mass of log(M_*/M_sun) = 7.19, and a specific star formation rate of sSFR = -10.17 1/yr.
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Nazarova et al. (2025) studied this question.
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