UGC 9128 explained
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.[5] [2] The galaxy has a mass of about, around 100 million stars, and a diameter of around 3300 ly.[2] [6] It is therefore quite faint, and so was only discovered in the 20th century.
UGC 9128 is around 2.7 Mly from GR 8, which is its nearest neighbour.
UGC 9128 is a starburst galaxy, with the peak of star formation being 20–100 million years ago.[2] It is thought to have both a halo and disc.
Notes and References
- 1999ApJS..125..409C. 10.1086/313286. Arcsecond Positions of UGC Galaxies. 1999. Cotton. W. D.. Condon. J. J.. Arbizzani. E.. The Astrophysical Journal Supplement Series. 125. 2. 409–412. 122517686 . free.
- Web site: Dynamics of starbursting dwarf galaxies . 8 August 2021.
- McConnachie. Alan W.. 2012-06-05. 2012AJ....144....4M. The Astronomical Journal. en. 144. 1. 4. 10.1088/0004-6256/144/1/4. 0004-6256. 1204.1562. The Observed Properties of Dwarf Galaxies in and Around the Local Group. 118515618 .
- 10.1086/301157 . DDO 187: Do Dwarf Galaxies Have Extended, Old Halos? . 2000 . Aparicio . Antonio . Tikhonov . Nikolay . Karachentsev . Igor . The Astronomical Journal . 119 . 1 . 177–187 . astro-ph/9909493 . 2000AJ....119..177A .
- Web site: Dwarf galaxy: small but perfectly formed . www.spacetelescope.org . 8 August 2021 . en.
- Web site: Plait . Phil . And the cottonball galaxies shall inherit the Universe . Slate Magazine . 8 August 2021 . en . 25 April 2011.
