UGC 9128
UGC 9128 | |
---|---|
Observation data (J2000 epoch) | |
Constellation | Boötes |
Right ascension | 14h 15m 56.70s[1] |
Declination | 23° 03′ 16.2″[1] |
Distance | 6.8-7.8 Mly (2.1-2.4 Mpc)[2][3] |
Characteristics | |
Mass | (1.3±0.2)×107 [3] M☉ |
Size | 3300 ly[4] |
Other designations | |
UGC 9128, DDO 187[5] |
UGC 9128 is a dwarf irregular galaxy around 6.8-7.8 Mly (2.1-2.4 Mpc) away; it is thought to be in the Local Group, although its membership is not certain.[2][3] The galaxy has a mass of about (1.3±0.2)×107 M☉, around 100 million stars, and a diameter of around 3300 ly.[3][4] It is therefore quite faint, and so was only discovered in the 20th century.[2]
UGC 9128 is around 2.7 Mly from GR 8, which is its nearest neighbour.[5]
UGC 9128 is a starburst galaxy, with the peak of star formation being 20-100 million years ago.[3][5] It is thought to have both a halo and disc.[5]
References[]
- ^ a b Cotton, W. D.; Condon, J. J.; Arbizzani, E. (1999). "Arcsecond Positions of UGC Galaxies". The Astrophysical Journal Supplement Series. 125 (2): 409–412. Bibcode:1999ApJS..125..409C. doi:10.1086/313286.
- ^ a b c "Dwarf galaxy: small but perfectly formed". www.spacetelescope.org. Retrieved 8 August 2021.
- ^ a b c d e "Dynamics of starbursting dwarf galaxies" (PDF). Retrieved 8 August 2021.
- ^ a b Plait, Phil (25 April 2011). "And the cottonball galaxies shall inherit the Universe". Slate Magazine. Retrieved 8 August 2021.
- ^ a b c d "Aparicio, Tikhonov, & Karachentsev, DDO 187". doi:10.1086/301157. S2CID 15309075. Retrieved 8 August 2021. Cite journal requires
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Categories:
- Dwarf irregular galaxies
- Boötes
- UGC objects
- Galaxy stubs