Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987aj.....94.1143m&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 94, Nov. 1987, p. 1143-1149. Research supported by the Caja General de Ahorros de Gr
Astronomy and Astrophysics
Astronomy
12
Elliptical Galaxies, Galactic Nuclei, H Alpha Line, Iron, Magnesium, Seyfert Galaxies, Spectrophotometry
Scientific paper
Spectrophotometric data for the elliptical galaxies NGC 6212 and Mkn 501, as well as UBVRI photometry for Mkn 501, are presented. Both galaxies are known to harbor active nuclei. The Seyfert 1 nature of the nucleus of NGC 6212 is confirmed, and it is argued that the extended emission in that galaxy could be due to recent star formation in it. Emission features have been detected at the center of Mkn 501, suggesting the presence of Seyfert-like activity in the nucleus. Both galaxies show early-type stellar absorption features, and some of their metallicity indicators are peculiar when compared with those of elliptical galaxies in Formax. In particular, the strengths of the magnesium and iron features are very high. The photometric UBVRI data for Mkn 501 show small amplitude variations which become more important in the I band.
Del Olmo Ascension
Masegosa Josefa
Moles Mariano
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