Searching for the hidden broad-line region in Centaurus A

D.M. Alexander; J. Hough; S. Young; J. Bailey; C.A. Heisler; S. Lumsden; A. Robinson

doi:10.1046/j.1365-8711.1999.02327.x

Searching for the hidden broad-line region in Centaurus A

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

Centre for Astrophysics Research (CAR)

Research output: Contribution to journal › Article › peer-review

14 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 language	English
Pages (from-to)	L17-L22
Journal	Monthly Notices of the Royal Astronomical Society (MNRAS)
Volume	303
Issue number	2
DOIs	https://doi.org/10.1046/j.1365-8711.1999.02327.x
Publication status	Published - 1999

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10.1046/j.1365-8711.1999.02327.x

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title = "Searching for the hidden broad-line region in Centaurus A",

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.",

author = "D.M. Alexander and J. Hough and S. Young and J. Bailey and C.A. Heisler and S. Lumsden and A. Robinson",

note = "{\textquoteleft}The definitive version is available at www3.interscience.wiley.com '. Copyright Blackwell Publishing / Royal Astronomical Society. DOI: 10.1046/j.1365-8711.1999.02327.x [Full text of this article is not available in the UHRA]",

year = "1999",

doi = "10.1046/j.1365-8711.1999.02327.x",

language = "English",

volume = "303",

pages = "L17--L22",

journal = "Monthly Notices of the Royal Astronomical Society (MNRAS)",

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TY - JOUR

T1 - Searching for the hidden broad-line region in Centaurus A

AU - Alexander, D.M.

AU - Hough, J.

AU - Young, S.

AU - Bailey, J.

AU - Heisler, C.A.

AU - Lumsden, S.

AU - Robinson, A.

N1 - ‘The definitive version is available at www3.interscience.wiley.com '. Copyright Blackwell Publishing / Royal Astronomical Society. DOI: 10.1046/j.1365-8711.1999.02327.x [Full text of this article is not available in the UHRA]

PY - 1999

Y1 - 1999

N2 - 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.

AB - 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.

U2 - 10.1046/j.1365-8711.1999.02327.x

DO - 10.1046/j.1365-8711.1999.02327.x

M3 - Article

SN - 0035-8711

VL - 303

SP - L17-L22

JO - Monthly Notices of the Royal Astronomical Society (MNRAS)

JF - Monthly Notices of the Royal Astronomical Society (MNRAS)

IS - 2

ER -

Searching for the hidden broad-line region in Centaurus A

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