Balmer and He I absorption in the nuclear spectrum of NGC 4151

J. B. Hutchings, D. M. Crenshaw, S. B. Kraemer, Jack Gabel, M. E. Kaiser, D. Weistrop, T. R. Gull

Research output: Contribution to journal › Article

15 Citations (Scopus)

Abstract

Spectra taken with the Space Telescope Imaging Spectrograph allow accurate location and extraction of the nuclear spectrum of NGC 4151, with minimal contamination by extended line emission and circum-nuclear starlight. Spectra since 1997 show that the P Cygni Balmer and He I absorption seen previously in low nuclear states is present in higher states, with outflow velocity that changes with the nuclear flux. The phenomenon is discussed in terms of some of the absorbers seen in the UV resonance lines, and in terms of outflows from the central source and surrounding torus.

Original languageEnglish
Pages (from-to)2543-2547
Number of pages5
JournalAstronomical Journal
Volume124
Issue number5 1763
DOIs
StatePublished - Nov 2002
Externally publishedYes

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outflow
resonance lines
spectrographs
absorbers
contamination
telescopes

All Science Journal Classification (ASJC) codes

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Hutchings, J. B., Crenshaw, D. M., Kraemer, S. B., Gabel, J., Kaiser, M. E., Weistrop, D., & Gull, T. R. (2002). Balmer and He I absorption in the nuclear spectrum of NGC 4151. Astronomical Journal, 124(5 1763), 2543-2547. https://doi.org/10.1086/344080

Balmer and He I absorption in the nuclear spectrum of NGC 4151. / Hutchings, J. B.; Crenshaw, D. M.; Kraemer, S. B.; Gabel, Jack; Kaiser, M. E.; Weistrop, D.; Gull, T. R.

In: Astronomical Journal, Vol. 124, No. 5 1763, 11.2002, p. 2543-2547.

Research output: Contribution to journal › Article

Hutchings, JB, Crenshaw, DM, Kraemer, SB, Gabel, J, Kaiser, ME, Weistrop, D & Gull, TR 2002, 'Balmer and He I absorption in the nuclear spectrum of NGC 4151', Astronomical Journal, vol. 124, no. 5 1763, pp. 2543-2547. https://doi.org/10.1086/344080
Hutchings JB, Crenshaw DM, Kraemer SB, Gabel J, Kaiser ME, Weistrop D et al. Balmer and He I absorption in the nuclear spectrum of NGC 4151. Astronomical Journal. 2002 Nov;124(5 1763):2543-2547. https://doi.org/10.1086/344080
Hutchings, J. B. ; Crenshaw, D. M. ; Kraemer, S. B. ; Gabel, Jack ; Kaiser, M. E. ; Weistrop, D. ; Gull, T. R. / Balmer and He I absorption in the nuclear spectrum of NGC 4151. In: Astronomical Journal. 2002 ; Vol. 124, No. 5 1763. pp. 2543-2547.
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