UDK 53
UDK 520
UDK 521
UDK 523
UDK 524
UDK 52-1
UDK 52-6
GRNTI 41.00
GRNTI 29.35
GRNTI 29.31
GRNTI 29.33
GRNTI 29.27
GRNTI 29.05
OKSO 03.06.01
OKSO 03.05.01
OKSO 03.04.03
BBK 2
BBK 223
TBK 614
TBK 6135
BISAC SCI004000 Astronomy
BISAC SCI005000 Physics / Astrophysics
We describe the results of observations with the 100m Robert C. Byrd Green Bank Telescope (GBT) in the HI line of 54 nearby dwarf galaxies found mainly in the DESI Legacy Imaging Surveys. Of these, we detected 35 galaxies with the following median parameters: the HI-flux of 0.53 Jy km/s, heliocentric velocity of 1123 km/s, and $W_{50}$ line width of 33 km/s. Most of them are isolated irregular objects, and some have turned out to be new probable satellites of nearby disc galaxies: NGC 2787, NGC 3556, NGC 4490, and NGC 5055. The detected galaxies are predominantly gas-rich systems with a median gaseous-mass-to-stellar-mass ratio of 2.41.
galaxies: dwarf; galaxies
1. Dey A., Schlegel D.J., Lang D., et al., 2019, The Astronomical Journal, 157, p. 168
2. Karachentsev I.D. and Kaisina E.I., 2022, Astrophysical Bulletin, 77, p. 372
3. Karachentsev I.D., Karachentseva V.E., Kaisin S.S., et al., 2024, Astrophysics, 66, p. 441
4. Karachentseva V.E., Karachentsev I.D., Kaisina E.I., et al., 2023, Astronomy & Astrophysics, 678, id. A16
5. Karachentsev I.D., Makarov D.I., Kaisina E.I., 2013, The Astronomical Journal, 145, p. 101
6. Kourkchi E., Courtois H.M., Graziani R., et al., 2020, The Astronomical Journal, 159, id. 67
7. Roychowdhury S., Chengalur J.N., Begum A., et al., 2010, MNRAS, 404, id. L60
8. Shaya E.J., Tully R.B., Hoffman Y., et al., 2017, The Astrophysical Journal, 850, p. 207
9. Tully R.B. and Fisher J.R., 1977, Astronomy & Astrophysics, 54, p. 661
10. Tully R.B., Shaya E.J., Karachentsev I.D., et al., 2008, The Astrophysical Journal, 676, p. 184