Abstract
view Abstract Citations (13) References (30) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Near-infrared spectrophotometry of NGC 4151 McAlary, C. W. ; McLaren, R. A. Abstract Two to four micron spectrophotometry of the Seyfert 1.5 galaxy NGC 4151 has been obtained. The B-alpha and B-gamma lines of hydrogen have been detected with strengths of 4.2 + or - 0.7 and 1.9 + or - 0.2 x 10 to the -13th ergs/sq cm per sec, respectively. The B-alpha/H-gamma ratio has been used to derive an upper limit, E(B-V) not greater than 0.13 mag, for the reddening toward the line formation regions of the nucleus. The 2-4 micron continuum of NGC 4151 can be adequately fitted by two black bodies, one representing a stellar component and the other strong thermal dust emission. No more than 10% of the total emission at 2 microns can be attributed to any nonthermal spectral distribution. Publication: The Astrophysical Journal Pub Date: November 1981 DOI: 10.1086/159351 Bibcode: 1981ApJ...250...98M Keywords: Emission Spectra; Galactic Nuclei; Infrared Spectra; Near Infrared Radiation; Seyfert Galaxies; Spectrophotometry; Cosmic Dust; Hydrogen; Interstellar Extinction; Line Spectra; Red Shift; Spectrum Analysis; Stellar Spectra; Astrophysics full text sources ADS | data products NED (8)
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