Multifrequency observations of the quasi-stellar object Ton 1542

D. M. Worrall; J. J. Puschell; F. C. Bruhweiler; H. R. Miller; M. F. Aller; H. D. Aller

Multifrequency observations of the quasi-stellar object Ton 1542

D. M. Worrall, J. J. Puschell, F. C. Bruhweiler, H. R. Miller, M. F. Aller, H. D. Aller

School of Physics

Research output: Contribution to journal › Article (Academic Journal) › peer-review

Abstract

The authors present single-epoch multifrequency data for the radio-quiet low-redshift QSO Ton 1542, spanning radio through ultraviolet wavelengths. They measure a 3σ upper limit of 9.2 mJy for the 20.3 GHz flux density. The first ultraviolet spectrum of this object is presented and discussed. The authors find a particularly strong excess of flux density at ≡3000 Å, which is likely to be dominated by Balmer continuum emission. They also find a Lα/Hβ flux ratio of ≡17, which is higher than that usually observed in QSOs.

Original language	English
Pages (from-to)	699-704
Number of pages	6
Journal	Publications of the Astronomical Society of the Pacific
Volume	96
Publication status	Published - 1 Sep 1984

Keywords

Astronomical Spectroscopy
Quasars
Radio Emission
Ultraviolet Astronomy
Balmer Series
H Lines
Iue

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http://adsabs.harvard.edu/abs/1984PASP...96..699W

Cite this

@article{abfb9db85b3f47ed92b57dd4125eda7e,

title = "Multifrequency observations of the quasi-stellar object Ton 1542",

abstract = "The authors present single-epoch multifrequency data for the radio-quiet low-redshift QSO Ton 1542, spanning radio through ultraviolet wavelengths. They measure a 3σ upper limit of 9.2 mJy for the 20.3 GHz flux density. The first ultraviolet spectrum of this object is presented and discussed. The authors find a particularly strong excess of flux density at ≡3000 {\AA}, which is likely to be dominated by Balmer continuum emission. They also find a Lα/Hβ flux ratio of ≡17, which is higher than that usually observed in QSOs.",

keywords = "Astronomical Spectroscopy, Quasars, Radio Emission, Ultraviolet Astronomy, Balmer Series, H Lines, Iue",

author = "Worrall, {D. M.} and Puschell, {J. J.} and Bruhweiler, {F. C.} and Miller, {H. R.} and Aller, {M. F.} and Aller, {H. D.}",

year = "1984",

month = sep,

day = "1",

language = "English",

volume = "96",

pages = "699--704",

journal = "Publications of the Astronomical Society of the Pacific",

issn = "0004-6280",

publisher = "University of Chicago",

}

TY - JOUR

T1 - Multifrequency observations of the quasi-stellar object Ton 1542

AU - Worrall, D. M.

AU - Puschell, J. J.

AU - Bruhweiler, F. C.

AU - Miller, H. R.

AU - Aller, M. F.

AU - Aller, H. D.

PY - 1984/9/1

Y1 - 1984/9/1

N2 - The authors present single-epoch multifrequency data for the radio-quiet low-redshift QSO Ton 1542, spanning radio through ultraviolet wavelengths. They measure a 3σ upper limit of 9.2 mJy for the 20.3 GHz flux density. The first ultraviolet spectrum of this object is presented and discussed. The authors find a particularly strong excess of flux density at ≡3000 Å, which is likely to be dominated by Balmer continuum emission. They also find a Lα/Hβ flux ratio of ≡17, which is higher than that usually observed in QSOs.

AB - The authors present single-epoch multifrequency data for the radio-quiet low-redshift QSO Ton 1542, spanning radio through ultraviolet wavelengths. They measure a 3σ upper limit of 9.2 mJy for the 20.3 GHz flux density. The first ultraviolet spectrum of this object is presented and discussed. The authors find a particularly strong excess of flux density at ≡3000 Å, which is likely to be dominated by Balmer continuum emission. They also find a Lα/Hβ flux ratio of ≡17, which is higher than that usually observed in QSOs.

KW - Astronomical Spectroscopy

KW - Quasars

KW - Radio Emission

KW - Ultraviolet Astronomy

KW - Balmer Series

KW - H Lines

KW - Iue

M3 - Article (Academic Journal)

VL - 96

SP - 699

EP - 704

JO - Publications of the Astronomical Society of the Pacific

JF - Publications of the Astronomical Society of the Pacific

SN - 0004-6280

ER -

Multifrequency observations of the quasi-stellar object Ton 1542

Abstract

Keywords

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