The hidden nuclear spectrum of the luminous IRAS source FSC 10214+4724

Buell Tomasson Jannuzi, Richard Elston, Gary D. Schmidt, Paul S. Smith, H. S. Stockman

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Optical spectropolarimetry of the luminous IRAS source FSC 10214+4724 (z = 2.286) reveals that the strong (∼17%) linear polarization detected by Lawrence et al. is shared by both the narrow UV emission lines and the underlying continuum. This observation and the brightness of the source rule out synchrotron emission and dichroic extinction by dust as the polarizing mechanism, leaving scattering as the only plausible cause of the polarized emission. The narrowness of the lines requires that the scatterers be dust grains or cool (below 1.6 × 104 K) electrons. We can recover the spectrum that is incident on the scattering medium provided we make some reasonable assumptions regarding the source geometry. The scattered UV spectrum has a power-law index α of -1.2 ± 0.6 (Fv ∝ vα), steeper than would be expected from a young burst of star formation but similar to that of many AGNs.

Original languageEnglish (US)
JournalAstrophysical Journal
Volume429
Issue number2 PART 2
StatePublished - Jul 10 1994
Externally publishedYes

Fingerprint

Infrared Astronomy Satellite
dust
scattering
linear polarization
star formation
bursts
synchrotrons
power law
brightness
extinction
polarization
continuums
geometry
electron
causes
electrons

Keywords

  • Galaxies: peculiar
  • Galaxies: starburst
  • Polarization

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Jannuzi, B. T., Elston, R., Schmidt, G. D., Smith, P. S., & Stockman, H. S. (1994). The hidden nuclear spectrum of the luminous IRAS source FSC 10214+4724. Astrophysical Journal, 429(2 PART 2).

The hidden nuclear spectrum of the luminous IRAS source FSC 10214+4724. / Jannuzi, Buell Tomasson; Elston, Richard; Schmidt, Gary D.; Smith, Paul S.; Stockman, H. S.

In: Astrophysical Journal, Vol. 429, No. 2 PART 2, 10.07.1994.

Research output: Contribution to journalArticle

Jannuzi, BT, Elston, R, Schmidt, GD, Smith, PS & Stockman, HS 1994, 'The hidden nuclear spectrum of the luminous IRAS source FSC 10214+4724', Astrophysical Journal, vol. 429, no. 2 PART 2.
Jannuzi BT, Elston R, Schmidt GD, Smith PS, Stockman HS. The hidden nuclear spectrum of the luminous IRAS source FSC 10214+4724. Astrophysical Journal. 1994 Jul 10;429(2 PART 2).
Jannuzi, Buell Tomasson ; Elston, Richard ; Schmidt, Gary D. ; Smith, Paul S. ; Stockman, H. S. / The hidden nuclear spectrum of the luminous IRAS source FSC 10214+4724. In: Astrophysical Journal. 1994 ; Vol. 429, No. 2 PART 2.
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