M106 (NGC 4258) is a barred spiral galaxy located in the constellation Canes Venatici at an approximate distance of 23 million light-years. It is classified as a Seyfert galaxy, hosting an active galactic nucleus powered by a supermassive black hole. Unlike typical spiral galaxies, M106 exhibits anomalous spiral arms that are not purely defined by starlight, but instead trace regions of energetic gas outflows and shock-heated material driven by activity in the galactic core.
The structure of M106 reveals a bright central bulge surrounded by well-defined spiral arms containing dust lanes, star-forming regions, and embedded H II regions. The anomalous arms, visible through enhanced H-alpha emission, extend beyond the primary stellar disk and are associated with jets and outflows originating near the nucleus. In the upper right of the field, the smaller companion galaxy NGC 4248 is also visible. This irregular galaxy lies at a similar distance and is gravitationally associated with M106, with its elongated structure suggesting tidal interaction that may play a role in shaping the dynamics and morphology of the system.
This image was created using broadband LRGB data combined with narrowband H-alpha acquired from Arnold, CA. The data were collected between March 5 and March 17, 2024, with a total integration time of 51.45 hours . The H-alpha data were integrated to enhance regions of active star formation and to reveal the extended anomalous arms, while the broadband data preserve the natural color and structure of the galaxy and its surrounding field.