Searching for the hidden broad-line region in Centaurus A

D. M. Alexander*, J. H. Hough, S. Young, J. A. Bailey, C. A. Heisler, S. L. Lumsden, A. Robinson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

We present the first near-infrared (K-band) spectropolarimetric observations of the nuclear region of Centaurus A. Although the data are of high signal-to-noise ratio, polarized broad Brγ is not detected and we place a 3σ upper limit of 3.9 × 10-15 erg s-1 cm-2 in polarized flux. We find a correlation between the K-band nuclear continuum and broad Hα line luminosity and estimate the strength of broad Brγ based on a number of possible models.

Original languageEnglish
JournalMonthly Notices of the Royal Astronomical Society
Volume303
Issue number2
Publication statusPublished - 21 Feb 1999

Keywords

  • Galaxies: active
  • Galaxies:individual: Cen A
  • Polarization
  • Techniques: polarimetric
  • Techniques:spectroscopic

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