1-20 micron infrared photometry of 3CR radio galaxies

M. Elvis; S. P. Willner; G. Fabbiano; N. P. Carleton; A. Lawrence; M. Ward

doi:10.1086/162028

1-20 micron infrared photometry of 3CR radio galaxies

M. Elvis, S. P. Willner, G. Fabbiano, N. P. Carleton, A. Lawrence, M. Ward

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

Abstract

Seven emission-line radio galaxies in the wavelength range from 1 to 20 microns were observed in February 1983. Three broad emission-line galaxies (BLRGs 3C 109, 3C 234, and 3C 445), and four narrow emission-line radio galaxies (NLRGs 3C 98, 3C 198, 3C 223, and 3C 293) were found. The BLRGs showed strong infrared fluxes beyond 3.5 microns, with steep infrared slopes similar to optical slopes. In a comparison with earlier observational data it was found that two of the BLRGs are variable in the JHK filter range without a change of slope. The NLRGs showed strong excess at 10 microns and normal elliptical galaxy colors at JHK and L. Simple predictions based on type-2 Seyfert galaxies show that strong infrared excesses are absent.

Original language	English
Pages (from-to)	574-579
Journal	Astrophysical Journal
Volume	280
DOIs	https://doi.org/10.1086/162028
Publication status	Published - 1 May 1984

Keywords / Materials (for Non-textual outputs)

Astronomical Photometry
Infrared Astronomy
Infrared Photometry
Radio Galaxies
Astronomical Catalogs
Continuous Spectra
Cosmic Dust
Emission Spectra
Line Spectra

Access to Document

10.1086/162028

http://adsabs.harvard.edu/abs/1984ApJ...280..574E

Cite this

@article{10666507ecd947f1aa416b5c45d6615d,

title = "1-20 micron infrared photometry of 3CR radio galaxies",

abstract = "Seven emission-line radio galaxies in the wavelength range from 1 to 20 microns were observed in February 1983. Three broad emission-line galaxies (BLRGs 3C 109, 3C 234, and 3C 445), and four narrow emission-line radio galaxies (NLRGs 3C 98, 3C 198, 3C 223, and 3C 293) were found. The BLRGs showed strong infrared fluxes beyond 3.5 microns, with steep infrared slopes similar to optical slopes. In a comparison with earlier observational data it was found that two of the BLRGs are variable in the JHK filter range without a change of slope. The NLRGs showed strong excess at 10 microns and normal elliptical galaxy colors at JHK and L. Simple predictions based on type-2 Seyfert galaxies show that strong infrared excesses are absent.",

keywords = "Astronomical Photometry, Infrared Astronomy, Infrared Photometry, Radio Galaxies, Astronomical Catalogs, Continuous Spectra, Cosmic Dust, Emission Spectra, Line Spectra",

author = "M. Elvis and Willner, {S. P.} and G. Fabbiano and Carleton, {N. P.} and A. Lawrence and M. Ward",

year = "1984",

month = may,

day = "1",

doi = "10.1086/162028",

language = "English",

volume = "280",

pages = "574--579",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing",

}

TY - JOUR

T1 - 1-20 micron infrared photometry of 3CR radio galaxies

AU - Elvis, M.

AU - Willner, S. P.

AU - Fabbiano, G.

AU - Carleton, N. P.

AU - Lawrence, A.

AU - Ward, M.

PY - 1984/5/1

Y1 - 1984/5/1

N2 - Seven emission-line radio galaxies in the wavelength range from 1 to 20 microns were observed in February 1983. Three broad emission-line galaxies (BLRGs 3C 109, 3C 234, and 3C 445), and four narrow emission-line radio galaxies (NLRGs 3C 98, 3C 198, 3C 223, and 3C 293) were found. The BLRGs showed strong infrared fluxes beyond 3.5 microns, with steep infrared slopes similar to optical slopes. In a comparison with earlier observational data it was found that two of the BLRGs are variable in the JHK filter range without a change of slope. The NLRGs showed strong excess at 10 microns and normal elliptical galaxy colors at JHK and L. Simple predictions based on type-2 Seyfert galaxies show that strong infrared excesses are absent.

AB - Seven emission-line radio galaxies in the wavelength range from 1 to 20 microns were observed in February 1983. Three broad emission-line galaxies (BLRGs 3C 109, 3C 234, and 3C 445), and four narrow emission-line radio galaxies (NLRGs 3C 98, 3C 198, 3C 223, and 3C 293) were found. The BLRGs showed strong infrared fluxes beyond 3.5 microns, with steep infrared slopes similar to optical slopes. In a comparison with earlier observational data it was found that two of the BLRGs are variable in the JHK filter range without a change of slope. The NLRGs showed strong excess at 10 microns and normal elliptical galaxy colors at JHK and L. Simple predictions based on type-2 Seyfert galaxies show that strong infrared excesses are absent.

KW - Astronomical Photometry

KW - Infrared Astronomy

KW - Infrared Photometry

KW - Radio Galaxies

KW - Astronomical Catalogs

KW - Continuous Spectra

KW - Cosmic Dust

KW - Emission Spectra

KW - Line Spectra

U2 - 10.1086/162028

DO - 10.1086/162028

M3 - Article

SN - 0004-637X

VL - 280

SP - 574

EP - 579

JO - Astrophysical Journal

JF - Astrophysical Journal

ER -

1-20 micron infrared photometry of 3CR radio galaxies

Abstract

Keywords / Materials (for Non-textual outputs)

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