Molecular gas and continuum emission in 3C 48: evidence for two merger nuclei?

Free access article

Issue		A&A Volume 439, Number 1, August III 2005


Page(s)		75 - 84
Section		Extragalactic astronomy
DOI		http://dx.doi.org/10.1051/0004-6361:20052643

A&A 439, 75-84 (2005)
DOI: 10.1051/0004-6361:20052643

Molecular gas and continuum emission in 3C 48: evidence for two merger nuclei?

M. Krips¹, A. Eckart¹, R. Neri², J. Zuther¹, D. Downes² and J. Scharwächter¹

¹ I. Physikalisches Institut, Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany
e-mail: krips@ph1.uni-koeln.de
² Institut de Radio Astronomie Millimétrique, 300 rue de la Piscine, 38406 Saint Martin d'Hères, France

(Received 5 January 2005 / Accepted 3 May 2005)

Abstract

second, weaker CO source at the QSO itself. At 1.2 mm, the continuum emission is elongated in the direction of the radio jet and towards 3C 48A. We model the 1.2 mm continuum with three different sources in 3C 48 - the 3C 48 QSO, the 3C 48 jet, and the second nucleus 3C 48A. We suggest that the unusually bright and extended nature of the jet may be due to its interaction with the second merger nucleus 3C 48A.

Key words: galaxies: active -- galaxies: kinematics and dynamics -- galaxies: interaction -- quasars: individual: 3C 48

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