Abstract
ABSTRACT We report the results of the first spectroscopic study of the galaxy HRG 705, which belongs to the Solitaire class of peculiar (collisional) Ring Galaxies, which, in turn, are little studied. The nuclear emission-line spectrum resembles that of a star-forming galaxy (H ii galaxy), with $\boldsymbol z = 0.0305$ and heliocentric velocity of $v = 9\, 144\, \pm \, 36~ {\rm km\, s}^{-1}$. The nuclear region is dominated by intermediate and old stellar populations, in addition to a contribution of 8 per cent of young stars. Based on the complex velocity profile along the slit position angle of 59°, we suggest that the nuclear region is composed by two bodies in gravitational interaction (a possible on-going merging). Analysis of the surface brightness distribution confirmed the existence of the second body, a probable intruder, which lies inside a central pseudo-bulge/disc. HRG 705 does not appear to be oxygen-rich, but it is slightly more (O/H)-enriched than the galaxies of our nearby Universe.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
