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- W1969393485 abstract "view Abstract Citations (146) References (48) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Optical and infrared spectrophotometry of 18 Markarian galaxies. Neugebauer, G. ; Becklin, E. E. ; Oke, J. B. ; Searle, L. Abstract Slit spectra, spectrophotometric scans, and infrared broad-band observations are presented for 18 Markarian galaxies with emission lines. Eight of the program galaxies can be classified as Seyfert galaxies. Arguments are given that thermal, nonthermal, and stellar radiation components are present. Broadly speaking, one group of Seyfert galaxies is characterized both by the presence of a high-density region of gas and by a continuum dominated by nonthermal radiation. The continua of the remaining program Seyferts, which do not have a high-density region of gas, are dominated by thermal radiation from dust and a stellar continuum. The 10 galaxies which are not Seyfert galaxies are shown to be examples of extragalactic H II regions; there is evidence for thermal emission from dust being present at 10 microns in four of these galaxies. Publication: The Astrophysical Journal Pub Date: April 1976 DOI: 10.1086/154247 Bibcode: 1976ApJ...205...29N Keywords: Galactic Radiation; Infrared Spectra; Markarian Galaxies; Seyfert Galaxies; Spectrophotometry; Cosmic Dust; Emission Spectra; H Ii Regions; Nebulae; Nonthermal Radiation; Spectral Energy Distribution; Astrophysics full text sources ADS | data products SIMBAD (22) NED (20)" @default.
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- W1969393485 date "1976-04-01" @default.
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- W1969393485 title "Optical and infrared spectrophotometry of 18 Markarian galaxies" @default.
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