NGC 4736, commonly known as M94, is a stunning spiral galaxy located in the constellation Canes Venatici. This galaxy, situated about 16 million light-years from Earth, features a unique ring structure that sets it apart from other spiral galaxies. The bright inner ring is an area of intense star formation, a phenomenon driven by the galaxy's central bar structure which funnels gas towards the core. This ring of young, hot stars gives M94 its distinctive appearance and makes it a popular target for astronomers and astrophotographers alike.

Image Description and Details : Galaxy M94 or Ngc 4736 is located about 14 million light years away in the constellation of the Hounds. The M94 galaxy is certainly one of the most beautiful galaxies observable in the spring sky. NGC 4736 was discovered by the French astronomer Pierre Méchain in 1781. Messier 94 is thought to have a diameter of 30,000 to 50,000 A.L. corresponding to its main nucleus. Beyond this, a much fainter looking halo extends another few tens of thousands of A.L. This picture was taken in Alentejo (South Portugal) in Remote de France by Team ARO from 04/07/22 to 05/08/22. Astrosib 400/3200 telescope on DDM 85 ASA mount. Camera Moravian G3 16200. Lum=89X5'. R,G,B=80x5' each Ha=18x20' each Total=33.41H Pixinsight-Photoshop processing

Copyright: Team ARO

M94 is classified as having a low ionization nuclear emission region (LINER) nucleus. LINERs in general are characterized by optical spectra that reveal that ionized gas is present but the gas is only weakly ionized (i.e. the atoms are missing relatively few electrons). M94 contains both an inner ring with a diameter of 70 arcseconds (approximately 5400 LY, 1.700 kpc at the distance of M94) and an outer ring with a diameter of 600 arcseconds (approx. 45,000 LY, 14 kpc). These rings appear to form at resonance locations within the disk of the galaxy. The inner ring is the site of strong star formation activity and is sometimes referred to as a starburst ring. This star formation is fueled by gas that is dynamically driven into the ring by the inner oval-shaped bar-like structure.