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Infrared spectroscopy of NGC 1068

  • I. Spectral Studies in the Optical, Ultraviolet and Infrared
  • Conference paper
  • First Online:
Active Galactic Nuclei

Part of the book series: Lecture Notes in Physics ((LNP,volume 307))

Abstract

Spectroscopy of the nucleus of the nearby Seyfert 2 galaxy NGC 1068 has been obtained using the IRTF and the facility Cooled-Grating Array Spectrometer (CGAS). The wavelengths observed covered the expected wavelengths of the Bry (n = 7 → 4), Brα (n = 5 → 4), and the Pfβ (n = 7 → 5) hydrogen recombination lines between 2.2 μm and 4.6 μm. The CGAS has a 32-element InSb array multiplexed by a Reticon and was used at a resolution of ∼250 km s−1, allowing accurate determination of the line profiles and surrounding continua simultaneously. For example, the S/N at each spectral position in the Brα line spectrum was ∼100. The data show that the infrared lines are not more broadened than the optical hydrogen recombination lines, suggesting that the presence of an obscured Seyfert 1-like active nucleus is unlikely unless the visual extinction through any obscuring material present is larger than ∼100 mag.

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Authors and Affiliations

  1. National Optical Astronomy Observatories, P.O.Box 26732, 85726, Tucson, AZ

    D. L. DePoy

Authors
  1. D. L. DePoy
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Editor information

H. Richard Miller Paul J. Wiita

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© 1988 Springer-Verlag

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DePoy, D.L. (1988). Infrared spectroscopy of NGC 1068. In: Miller, H.R., Wiita, P.J. (eds) Active Galactic Nuclei. Lecture Notes in Physics, vol 307. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-19492-4_176

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  • DOI: https://doi.org/10.1007/3-540-19492-4_176

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-19492-7

  • Online ISBN: 978-3-540-39304-7

  • eBook Packages: Springer Book Archive

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