Optical imaging and long-slit spectroscopy of Markarian galaxies with multiple nuclei. I - Basic data

Details Optical imaging and long-slit spectroscopy of Markarian galaxies with multiple nuclei. I - Basic data Optical imaging and long-slit spectroscopy of Markarian galaxies with multiple nuclei. I - Basic data

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apjs...85...27m&link_type=abstract

Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 85, no. 1, p. 27-109.

Mathematics

Logic

141

Astronomical Photometry, Astronomical Spectroscopy, Galactic Nuclei, Imaging Techniques, Markarian Galaxies, Charge Coupled Devices, Galactic Structure, H Ii Regions, Histograms, Imagery, Interacting Galaxies

Scientific paper

Optical CCD images and long-slit spectroscopic data are presented for over 100 Markarian (UV-excess) galaxies reported in early studies to possess multiple optical nuclei or extreme morphological peculiarities suggestive of galaxy collisions and mergers. Stacked broad-band images are presented with histogram equalization in order to show simultaneously the nuclei and features at very low surface-brightness levels. Morphological properties, luminosities and colors of the integral systems are given. Photometric and image properties of over 200 individual nuclei and giant H II regions have been measured with respect to the local backgrounds in the galaxies using an objective image finding algorithm. Labeled contour plots identify the measured subcomponents. Two-dimensional spectral data are presented, in addition to intensity profiles along the slit in the light of H-alpha + forbidden N II emission lines and adjacent continuum. Nuclear emission-line measurements, reddening estimates, monochromatic continuum magnitudes, and colors are given.

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