M94

M94 et son anneau brillant ou se forment de nombreuses jeunes étoiles.
verion lrvb sur cette galaxie.

M94 and its shiny ring or many young stars.
verion lrvb on this galaxy, tonight still in lockdown but it's back for other targets!!
The sky will be clear :)

brightness 31 x600s 48 x300s
red 30 x150s
green 29 x150s
blue 35 x150s
exhibition 13 H05min

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.

Copyright: MERE Rémi