Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aj.....96.1227h&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 96, Oct. 1988, p. 1227-1234.
Astronomy and Astrophysics
Astronomy
18
Astronomical Photography, Centimeter Waves, Galactic Nuclei, Light (Visible Radiation), Markarian Galaxies, Very Large Array (Vla), Infrared Astronomy Satellite, Radio Sources (Astronomy), Spatial Resolution, Stellar Luminosity
Scientific paper
Optical imaging in continuum and line wavelengths, spatially resolved optical spectroscopy, and 21 cm radio imaging of Markarian 266 are presented. The galaxy has faint extended plumes of luminosity, which indicate that it is a recent merger. There are extended regions of blue luminosity suggestive of recent star formation, and remarkable structure in forbidden O III line emission. Spectroscopic data show the velocities and densities in the ionized gas. Radio observations taken with the VLA show that both nuclei are resolved radio sources, and that there is a third radio source between them which has no optical counterpart; 21-cm absorption is seen against the brighter optical nucleus, indicating possible infall. These results are discussed in terms of galaxy mergers, nuclear activation, and ionized gas. Mkn 266 has many similarities to Arp 220 and appears to be a somewhat lower-luminosity version of the IRAS ultraluminous galaxies.
Hutchings John B.
Neff Susan G.
van Gorkom Jacqueline H.
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