NGC 7154
Galaxy in the constellation Piscis Austrinus
NGC 7154 is a peculiar barred spiral galaxy in the constellation of Piscis Austrinus. Its velocity with respect to the cosmic microwave background is 2,356±18 km/s, which corresponds to a Hubble distance of 105.3 ± 7.5 Mly (32.3 ± 2.3 Mpc). However, eight non-redshift measurements give a closer mean distance of 89.29 ± 16.04 Mly (27.375 ± 4.918 Mpc). It was discovered by British astronomer John Herschel on 23 September 1834.
NGC 7154 has a possible active galactic nucleus, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.
01IC 5156 group
02Supernova
Sources and credits
This article is adapted from the Wikipedia article “NGC 7154”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- NGC 7154 legacy dr10.jpg by Legacy Surveys / D.Lang (Perimeter Institute) & Meli thev, CC BY 4.0
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