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The IRAS galaxy 0421 + 040P06 - an active spiral (?) galaxy with extended radio lobes

Beichman, C. and Lonsdale, C. J. and Wynn-Williams, C. G. and Heasley, J. N. and Becklin, E. E. and Persson, S. E. and Miley, G. K. and Soifer, B. T. and Neugebauer, G. and Houck, J. R. (1985) The IRAS galaxy 0421 + 040P06 - an active spiral (?) galaxy with extended radio lobes. Astrophysical Journal, 293 (1). pp. 148-153. ISSN 0004-637X. doi:10.1086/163221.

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The infrared bright galaxy 0421 + 040P06 detected by IRAS at 25 and 60 μm has been studied at optical, infrared, and radio wavelengths. It is a luminous galaxy with apparent spiral structure emitting 4 x 10^(37) W (1 x 10^(11) L_☉) from far-infrared to optical wavelengths, assuming H_0 = 75 km s^(-1) Mpc^(-1). Optical spectroscopy reveals a Seyfert 2 emission-line spectrum, making 0421 +040P06 the first active galaxy selected from an unbiased infrared survey of galaxies. The fact that this galaxy shows a flatter energy distribution with more 25 μm emission than other galaxies in the infrared sample may be related to the presence of an intense active nucleus. The radio observations reveal the presence of a nonthermal source that, at 6 cm, shows a prominent double lobed structure 20-30 kpc in size extending beyond the optical confines of the galaxy. The radio source is 3-10 times larger than structures previously seen in spiral galaxies and may represent a transition between the relatively small, weak sources seen in some active spirals and the stronger, larger ones seen toward elliptical galaxies with active nuclei.

Item Type:Article
Related URLs:
URLURL TypeDescription
Beichman, C.0000-0002-5627-5471
Lonsdale, C. J.0000-0003-0898-406X
Additional Information:© 1985 American Astronomical Society. Received 1984 August 2; accepted 1984 December 14. We would like to thank Drs. R. Ekers, M. Goss, and G. Lake for useful discussions and Carol Oken for assistance in coadding the IRAS data. We would like to thank N. Devereux, G. Hill, and D. dePoy for assistance with the ground-based observations. One of us (C. A. B.) would like to thank Dr. John Bahcall for his hospitality at the Institute for Advanced Study where a draft of this manuscript was prepared. This work was supported in part by NSF grants AST 82-17118 and AST 82-11591.
Funding AgencyGrant Number
NSFAST 82-17118
NSFAST 82-11591
Subject Keywords:galaxies: Seyfert galaxies: structure infrared: sources radio sources: galaxies
Issue or Number:1
Record Number:CaltechAUTHORS:20170306-091618132
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Official Citation:The IRAS galaxy 0421 + 040P06 - an active spiral (?) galaxy with extended radio lobes Beichman, C., Lonsdale, C. J., Wynn-Williams, C. G., Heasley, J. N., Becklin, E. E., Persson, S. E., , Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 293, June 1, 1985, p. 148-153.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:74763
Deposited By: Ruth Sustaita
Deposited On:06 Mar 2017 18:25
Last Modified:11 Nov 2021 05:29

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