NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-24 T03:53:20 PDT
Help | Comment | NED Home

For refcode 2014ApJ...784...16M:
Retrieve 52 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
2014ApJ...784...16M Photometric Decomposition of Mergers in Disk Galaxies Mezcua, M.; Lobanov, A. P.; Mediavilla, E.; Karouzos, M. Abstract. Several observational studies and numerical simulations suggest that mergers must contribute to the evolution of galaxies; however, the role that they play is not yet fully understood. In this paper we study a sample of 52 double nucleus disk galaxies that are considered as candidates for a minor merger event. The luminosity of each of the nuclei and their relative separation are derived from a multi-component photometric fit of the galaxies in the Sloan Digital Sky Survey optical images. We find that the nuclei in most of the sources have projected separations <=4 kpc. The ratio of nuclear luminosities indicates that most of the systems are likely in the coalescence stage of a major merger. This is supported by the existence of a single galaxy disk in 65% of the systems studied and the finding of a correlation between nuclear luminosity and host luminosity for the single-disk systems: those sources fitted with as single disk are in a more evolved stage of the merger and present an enhancement of the nuclear luminosity compared to the double-disk systems, as expected from simulations of galaxy mergers. Finally, we identify a sample of 19 double nucleus disk galaxies in which the two nuclei are physically separated by <=1 kpc and constitute thus a sample of sub-kpc binary active galactic nucleus candidates. Key words: galaxies: evolution, galaxies: interactions, galaxies: nuclei, galaxies: photometry
Retrieve 52 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home