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1982•The Astronomical JournalRequires access

Infrared photometry of 30 Seyfert galaxies

R. J. Rudy, Paul D. LeVan, J. M. Rodríguez-Espinosa

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Abstract

Thirty Seyfert galaxies have been studied for bright sources. The photometry is reported and three of the more unusual galaxies (Mrk 705, Mrk 817, and Mrk 1095) are individually discussed. It is confirmed that infrared emission in excess of the stellar contribution is commonplace in Seyfert galaxies. Attention is drawn to the J-K colors of the galaxies which are generally redder for the Type I Seyferts than the Type II's. This can be explained either thermally or nonthermally.

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What this paper is about

Thirty Seyfert galaxies have been studied for bright sources. The photometry is reported and three of the more unusual galaxies (Mrk 705, Mrk 817, and Mrk 1095) are individually discussed. It is confirmed that infrared emission in excess of the stellar contribution is commonplace in Seyfert galaxies. Attention is drawn to the J-K colors of the galaxies which are generally redder for the Type I Seyferts than the Type II's. This can be explained either thermally or nonthermally.

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Available abstract

Thirty Seyfert galaxies have been studied for bright sources. The photometry is reported and three of the more unusual galaxies (Mrk 705, Mrk 817, and Mrk 1095) are individually discussed. It is confirmed that infrared emission in excess of the stellar contribution is commonplace in Seyfert galaxies. Attention is drawn to the J-K colors of the galaxies which are generally redder for the Type I Seyferts than the Type II's. This can be explained either thermally or nonthermally.

Key concepts: Physics, Photometry (optics), Luminous infrared galaxy, Astronomy, Astrophysics, Galaxy, Infrared, Stars

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