MS 1455.0+2232 BCG

Lore & Background

MS 1455.0+2232 BCG is classified as a central cluster galaxy (CCG) of MS 1455.0+2232. Its optical spectrum displays strong, narrow emission lines with a full width at half maximum of 500 kilometers per second, and a blue continuum that is enhanced. The galaxy's central core has a blue appearance, and its overall shape is categorized as boxy. The nucleus is active and classified as a radio galaxy, containing a compact radio source described as point-like, with a central compact component surrounded by an extended halo. The radio core remains unresolved, but the source separates into a western component slightly misaligned with the galaxy and an eastern extension.

Reader's Guide

The significance of MS 1455.0+2232 BCG lies in its role as the brightest cluster galaxy of MS 1455.0+2232, offering insights into galaxy evolution in dense environments. Its active nucleus and radio emission, including a compact source with a halo, highlight its nature as a radio galaxy. The detection of molecular gas with a mass of 6.1 ± 2.4 × 10^10 M☉ and outflows at 1,227 M☉ per year indicates ongoing feedback processes. A star formation rate of 36 ± 4 M☉ per year, measured via ultraviolet excess, and young blue stellar populations with mean ages of 3440 ± 680 million years suggest recent moderate star formation. The galaxy's boxy morphology and enhanced blue continuum further characterize its dynamic state, making it a key object for studying galaxy-cluster interactions and active galactic nuclei.

Did You Know?

• Its molecular gas outflow rate is approximately 1,227 M☉ per year.
• The galaxy contains two stellar components in its inner region with mean ages of 3440 ± 680 million years.
• The total flux density of its compact radio component is 11.93 ± 1.24 mJy.